GUIDANCE ASSISTANCE SYSTEM

Skid steered all terrain vehicle

Pump arrangement e.g. vacuum pump arrangement, for e.g. diesel engine of motor vehicle, has pump directly integrated into cylinder head in end of camshaft, where case of pump is formed integrally with cylinder head by molding operation

Le moteur à combustion interne comprend au moins un arbre à cames (2) situé dans la culasse (1). La pompe à huile (6) est directement intégrée à la culasse (1) en bout d'arbre à cames (2). Le carter (3) de la pompe à huile (6) dans la culasse (1) est réalisé monobloc avec la culasse (1) par la même opération de moulage que cette dernière. Véhicules automobiles. Pompes à huile de moteurs à combustion interne de véhicules automobiles.

DUAL-ROW GEAR PUMP

The present invention provides a dual-row gear pump capable of continuously and stably pumping operational oil, so as to stably supply hydraulic energy required for steering. According to the present invention, the dual-row gear pump comprises: a rotary shaft (100) receiving external rotary power to be rotated; a dual-row driving gear (210) penetrating the rotary shaft (100) into a rotary center to be coupled and rotated by rotation of the rotary shaft (100); a dual-row idler gear (220) engaged with the driving gear (210) to be rotated; two gear housings (200) having an inner diameter corresponding to an outer diameter of the driving gear (210) and the idler gear (220), and receiving the driving gear (210) and the idler gear (220); an operational oil passage housing (300) having an operational oil inlet hole (310) to receive the operational oil on one side and having an operational oil outlet hole (320) to discharge the operational oil on the other side, and interposed between the two gear ...

POWER STEERING SYSTEM

A power steering system for a vehicle includes a hydraulic pump interconnected with a power steering gear and a fluid coupling that operatively connects a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input to vary torque transmitted via the fluid coupling. The fluid coupling includes a coil operatively connected with the electronic controller and a magnetically permeable core disposed about the coil.

HYDRAULIC POWER STEERING SYSTEM

The invention relates to a hydraulic power steering system (1) for a vehicle, comprising a pump (2) for conveying pressure medium from a pressure medium reservoir (3) to a load (4), wherein the pump (2) is driven by a vehicle engine according to the rotational speed, having a control device (5) for controlling a volumetric flow rate to the load (4), and having an orifice (6), which has an open cross-sectional area (7) that can be changed and which is arranged in the pressure medium flow from the pump (2) to the load (4), wherein the open cross-sectional area (7) increases when the pressure present at the orifice (6) rises. It is provided that the orifice (6) is made of a flexible and/or compressible material at least in a passage area that can affect the open cross-sectional area (7), wherein when the pressure at the orifice (6) rises, said material changes the shape thereof in such a way that the open cross-sectional area (7) changes.

Differential steering control vehicle, system and method

A method of differentially steering a hydraulically driven vehicle includes measuring left and right swash plate angles of pumps which drive left and right wheels of the vehicle and if the angles are different from one another and the larger swash plate angle is equal to or exceeds a threshold value then reducing the larger swash plate angle. If the larger swash plate angle is between the threshold value and a lower limit, or below the lower limit the swash plate angle is increased. Control systems and vehicles include swash plate angle sensors and actuators in communication with a controller which effects the steering control method.

DRIVE TRAIN FOR A COMPRESSOR AND A HYDRAULIC PUMP

INTEGRIERTE SERVOLENKUNG FÜR VORDER- UND HINTERRÄDER EINES FAHRZEUGS UND STEUERVERFAHREN DAFÜR

Die Erfindung betrifft ein Steuerverfahren und eine Servolenkung eines Fahrzeugs mit einem Haupthydraulikmotor, der Leistung einer Brennkraftmaschine aufnimmt und einen Hydraulikdruck erzeugt, und einem Hilfshydraulikmotor, der einen Hydraulikdruck erzeugt. Ein Vorderrad-Lenkzylinder nimmt einen Hydraulikdruck auf und erzeugt eine Leistung zum Lenken der Vorderräder und Unterstützen eines Lenkens, und ein Hinterrad-Lenkzylinder nimmt einen Hydraulikdruck auf und erzeugt eine Leistung zum Lenken der Hinterräder. Ein integriertes Regelventil ist mit den Hydraulikmotoren und den Lenkzylindern durch Hydraulikdruckleitungen verbunden und stellt den durch einen Haupthydraulikmotor erzeugten Hydraulikdruck ein, um den Druck an den Vorderrad-Lenkzylinder zuzuführen, und stellt den durch den Hilfshydraulikmotor erzeugten Hydraulikdruck ein, um den Druck an den Vorderrad-Lenkzylinder oder den Hinterrad-Lenkzylinder zuzuführen. Eine Steuerung betreibt den Hilfshydraulikmotor und das integrierte Regelventil ...

SYSTEM WITH A COMPRESSOR AND A CONSUMER IN A MOTOR VEHICLE

ROUGH-TERRAIN VEHICLE WITH SLIP STEERING ELEMENT

MOTOR VEHICLE WITH GUIDANCE ASSISTANCE PUMP AND LUFTPRESSER

Drive train for a compressor and a hydraulic pump

The invention relates to a drive train (30) for a compressor (12) and a hydraulic pump (24) of a motor vehicle that, for assisting steering, has a hydraulic power steering (14) and an electric superimposed steering system (36). The compressor (12) and the hydraulic pump (24) are driven by a common output shaft (30) of a motor vehicle driving motor (16). According to the invention, means (10, 20) are provided that reduce the power delivered via the output shaft (30) to the compressor (12) and the hydraulic pump (24) when the demands upon the compressor (12) and upon the power steering system (36) allow this to occur. The invention also relates to a method for driving a compressor and a hydraulic pump of a motor vehicle that, for assisting steering, has a hydraulic power steering as well as an electric superimposed steering system.

INTEGRATED POWER STEERING SYSTEM FOR FRONT WHEEL AND REAR WHEEL OF VEHICLE AND CONTROL METHOD THEREOF

The present invention relates to a power steering system of a vehicle and a control method thereof. A main objective of the present invention is to provide an integrated power steering system for a front wheel and a rear wheel of a vehicle and a control method thereof which share some components of an emergency steering system and a rear wheel steering system such as a hydraulic pump, a controller, and a control valve to decrease the number of components, reduce costs, and reduce power loss of a vehicle. To achieve the objective, the integrated power steering system for a front wheel and a rear wheel of a vehicle comprises: a main hydraulic motor to receive engine power to be driven to generate a hydraulic pressure; an auxiliary hydraulic motor to generate a hydraulic pressure; a front wheel steering cylinder to receive a hydraulic pressure to generate power to steer a front wheel and assist in driver steering; a rear wheel steering cylinder to receive a hydraulic pressure to generate power ...

BETRIEBSVERFAHREN FÜR EIN HILFSKRAFTVERSTÄRKTES HYDRO-LENKSYSTEM EINES KRAFTFAHRZEUGS

System mit einem Verdichter und einem Verbraucher in einem Kraftfahrzeug

Die Erfindung betrifft ein System mit einem Verdichter (16) und einem Verbraucher (20), die an einen Antriebsstrang (14, 18) gekoppelt sind und aus diesem Energie beziehen. Erfindungsgemäß ist vorgesehen, dass der Verbraucher (20) geeignet ist, eine Aufnahme einer ihm von dem Antriebsstrang (14, 18) zur Verfügung gestellten Leistung in Abhängigkeit von einer für einen Verdichterbetrieb erforderlichen, von dem Antriebsstrang (14, 18) dem Verdichter (16) zugeführten Leistung zu variieren. Weiter betrifft die Erfindung eine Pumpe, die zumindest eine während eines Pumpenbetriebs eine Pumpleistung erbringende Pumpenkammer (24) aufweist. Erfindungsgemäß ist vorgesehen, dass die Pumpe weiterhin zumindest eine Pumpenkammer (22) aufweist, die während des Pumpenbetriebs keine oder eine verringerte Pumpleistung erbringt.

REAR STEERING CYLINDER DAMPENING

A hydraulic system for controlling at least one steerable caster wheel of an agricultural machine includes a first actuator having a piston and including an inboard fluid port for supplying fluid to a first side of the piston to move the piston in a first direction, and an outboard fluid port for supplying fluid to a second side of the piston to move the piston in a second direction. A first fluid pressure equalizer is fluidically coupled to the first side actuator and operable to equalize fluid pressure over a period of time between the first side and the second side of the piston of the first side actuator.

SKID STEERED ALL TERRAIN VEHICLE

A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear.

Method for controlling a steering system, control device and steering system

A method and control device (100) for controlling a steering system (7) of a vehicle (1) is provided. The steering system comprises a first power steering actuator, the first power steering actuator constituting a combustion engine driven hydraulic pump (10). The steering system further comprises a second power steering actuator (12, 14). The method for controlling the steering system of a vehicle comprises the steps of activating the second power steering actuator, and controlling the second power steering actuator so as to compensate for a loss of steering assistance provided by the first power steering actuator as a result of shutting down the combustion engine and/or controlling the first power steering actuator so as to reduce a steering assistance provided by the first power steering actuator to compensate for an increased steering assistance provided by the activation of the second power steering actuator.

FORKLIFT

The present disclosure relates to a forklift. The forklift according to the present disclosure is controlled such that when a traveling speed reaches or becomes higher than a predetermined traveling speed, a flow rate of hydraulic oil to be provided to a steering unit is reduced. Therefore, in order to implement a desired direction change, a steering wheel needs to be rotated to a relatively larger degree than when the forklift travels at a low speed. That is, straight traveling performance may be improved by reducing sensitivity of a direction change of the forklift to an operation of the steering wheel. 1. A forklift comprising:{'b': '11', 'a transmission which outputs power of which the speed is changed to a first speed or a second speed;'}{'b': '10', 'a pump which is operated by the power and discharges pressurized hydraulic oil;'}{'b': '12', 'a traveling priority valve which is controlled to provide the hydraulic oil preferentially to a traveling motor when a control unit selects a traveling mode;'}{'b': 20', '12', '21, 'a steering unit which is supplied with hydraulic oil from the traveling priority valve and provided with a steering wheel which is rotated to discharge hydraulic oil for a direction change;'}{'b': 30', '31, 'a steering actuator which is operated by the hydraulic oil for the direction change so as to change a traveling direction of a rear wheel tire ;'}{'b': '100', 'a controller which stores a predetermined traveling speed, and outputs a control command when a current traveling speed reaches or becomes higher than the predetermined traveling speed; and'}{'b': 200', '12', '20, 'a control valve which is installed in a hydraulic line through which hydraulic oil is provided from the traveling priority valve to the steering unit , and controlled such that when the control command is outputted, an opening degree of the valve is decreased and a flow rate of hydraulic oil is decreased.'}2. The forklift of claim 1 , wherein the current traveling speed is ...

Rear steering hydraulic system

A hydraulic system for controlling a pair of steerable caster wheels includes a left steering command valve, a right steering command valve, and a rear steering control valve. A supply pressure fluid circuit interconnects a pressure source and the rear steering control valve. A command valve supply fluid circuit interconnects the rear steering control valve with both the right steering command valve and the left steering command valve. A left side steering fluid circuit interconnects a left side actuator and the left steering command valve. A right side steering fluid circuit interconnects a right side actuator and the right steering command valve. A fluidic tie rod fluid circuit interconnects both the left side actuator and the right side actuator with the rear steering control valve. A tank return fluid circuit interconnects the rear steering control valve, the left and right steering command valves, and a tank.

CLUTCH COMPRESSOR AND POWER STEERING SYSTEM AND METHOD FOR CONTROLLING THE SAME

ТРАНСПОРТНОЕ СРЕДСТВО ДЛЯ ЛЮБОЙ МЕСТНОСТИ, УПРАВЛЯЕМОЕ ПОСРЕДСТВОМ ЗАНОСА

FIELD: transport. SUBSTANCE: invention relates to automotive industry. In compliance with first version, light cross-country vehicle comprises two drives for wheels or crawler belt at vehicle sides and differential steering with sun wheel.Cross-country vehicle comprises extra steering drive acting at sun wheel. In compliance with second version, steering hydraulic drive including hydraulic pump and drive motor. Hydraulic circuit includes flow priority control valve and steering wheel control valve. Its dry weight makes is under one ton, while its length is smaller than 3.5 m and width is smaller than 1.65 m. Steering control valve is connected with steering wheel hydraulic drive motor. Hydraulic circuit incorporates additional safety valve. In compliance with third version, is comprises engine torque control device with engine throttle electronic control system. Said engine throttle electronic control system is connected with engine and throttle lever extending part or pedal to compensate for torque required to make steering force complying with steering pressure gage reading. In compliance with fourth version, it comprises differential steering device including gearing composed of steering control motor acting at steering shaft. Steering shaft is engaged with sun wheel carrier engaged with engine motor. In compliance with fifth version, it comprises hydraulic circuit with extra working hydraulic system. Steering motor hydraulic system enjoys priority over extra working hydraulic system. EFFECT: improved cross country capacity. 28 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 499 716 (13) C2 (51) МПК B62D 11/06 B62D 55/04 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010125837/11, 15.12.2008 (24) Дата начала отсчета срока действия патента: 15.12.2008 (73) Патентообладатель(и): ВЕНКО АГ БУРГДОРФ (CH) (43) Дата публикации заявки: 10.02.2012 Бюл. № 4 2 4 9 9 7 1 6 (45) Опубликовано: 27.11. ...

Verstellpumpe

Eine Verstellpumpe umfasst ein Pumpenteil (13) und einen Nockenring (14) zum Zuführen von Betriebsflüssigkeit zu einer Fahrzeuglenkvorrichtung (5). Der Nockenring (14) ist radial außerhalb des Pumpenteils (13) angeordnet, und ausgelegt, um sich zusammen mit einer Änderung der Exzentrizität des Nockenrings (14) zu bewegen, wobei die Änderung der Exzentrizität eine Änderung der spezifischen Abgaberate bewirkt. Ein Magnet (16) ist ausgelegt, um die Exzentrizität des Nockenrings (14) durch das Antreiben mit einem Erregerstrom (Ireal), der einem Regelungseinstellwert (Qout, ICMD) angepasst ist, zu regeln. Ein Basiseinstellwert (Q_CMD) wird auf der Basis der Lenkwinkelgeschwindigkeit () und der Fahrzeuggeschwindigkeit (V) berechnet. Der Regelungseinstellwert (Qout, ICMD) wird auf der Basis des Basiseinstellwertes (Q_CMD) und der Lenkwinkelbeschleunigung (d) derart berechnet, dass der Regelungseinstellwert (Qout, ICMD) schneller zunimmt als der Basiseinstellwert (Q_CMD), wenn der Basiseinstellwert ...

POWER STEERING PUMP SYSTEM

... 1287550 Power steering FORD MOTOR CO Ltd 12 Aug 1971 37903/71 Heading B7H A motor vehicle has two engines which drive respective power steering pumps 10, 11 the outlets 12, 13 of which are connected to a power steering ram through respective check valves 14, 15 and a valve 19 is connected between the outlet of one pump 11 and a reservoir 18 common to both pumps so that with both pumps working the one pump 11 recirculates fluid back to the reservoir and the other pump feeds the ram. (For Figure see next column) ...

DRIVE STRAND FOR A COMPRESSOR AND A HYDRAULIC PUMP

Vehicle used as a truck or bus comprises a brake compressor driven by an auxiliary pump and decoupled from the drive unit using a coupling which switches between the pump and compressor

Vehicle comprises a brake compressor (2) driven by an auxiliary pump (1) and decoupled from the drive unit using a coupling (3) which switches between the pump and compressor. Preferred Features: The pump, the coupling and the compressor form a compact component arranged in a common housing. The shaft (5) of the pump supports a driving pinion (4) on the side lying opposite the coupling.

Hydraulic system

A hydraulic system for supplying fluid to an actuator comprising a variable speed prime mover drivingly coupled to a variable displacement hydraulic pump. The system is configured to deliver hydraulic fluid via fluid conduits to an actuator. It may deliver hydraulic fluid to an actuator at a first hydraulic pressure at a first rate of pressure rise; and at a second hydraulic pressure at a second rate of pressure rise. The first hydraulic pressure may be greater than the second hydraulic pressure; and the first hydraulic rate of pressure rise may be lower than the second hydraulic rate of pressure rise.

DIRECTION ASSISTEE OF the TYPE SAVING ENERGY

Apparatus for use in turning steerable vehicle wheels

An apparatus ( 10 ) for use in turning steerable vehicle wheels ( 14, 16 ) includes a hydraulic power steering motor ( 12 ). A pump ( 26 ) having an outlet port ( 28 ) is connected in fluid communication with the power steering motor ( 12 ) and operable to supply hydraulic fluid to the power steering motor ( 12 ). A continuously variable transmission ( 50 ) is connected with the engine of the vehicle and the pump ( 26 ). The continuously variable transmission ( 50 ) is operable to drive the pump ( 26 ) at a first speed when the pressure at the outlet port ( 28 ) is at a first pressure. The continuously variable transmission ( 50 ) is operable to drive the pump ( 26 ) at a second speed when the pressure at the outlet port ( 28 ) is at a second pressure different than the first pressure. The first speed at which the pump ( 26 ) is driven is greater than the second speed.

ТРАНСПОРТНОЕ СРЕДСТВО ДЛЯ ЛЮБОЙ МЕСТНОСТИ, УПРАВЛЯЕМОЕ ПОСРЕДСТВОМ ЗАНОСА

... 1. Управляемо скользящий при поворотах вездеход, включающий в себя два приводных агрегата для колес или гусениц на обеих сторонах транспортного средства и дифференциальное рулевое устройство с солнечной шестерней, при этом вездеход является легким вездеходом (ЛВХ), в котором дифференциальное рулевое устройство предназначено для получения определенной дифференциальной скорости двух приводных агрегатов транспортных средств, связанной с углом поворота рулевого устройства, независимо от состояния поверхности, по которой движется транспортное средство, при этом дополнительный рулевой привод действует на солнечную шестерню. ! 2. Легкий вездеход по п.1, в котором дифференциальное рулевое устройство приводит к появлению дифференциальной скорости двух приводных агрегатов, которая зависит от усилия, прилагаемого к рулевому устройству, таким образом, что при повороте автомобиля его радиус меньше на низкой скорости транспортного средства, чем при высокой при наличии того же усилия, прилагаемого к рулевому ...

Clutch device of oil pump in power steering system

A clutch device of an oil pump in a power steering system includes a pulley shaft coupled with a pulley connected with a crankshaft of an engine via a belt, a body shaft coupled with a rotor rotatably installed in a pump body and provided with a vein, clutch plates provided in the pulley shaft and the body shaft, and transmitting a rotation power of the pulley shaft to the body shaft or blocking the rotation power therebetween, an elastic member provided in the body shaft, a check valve installed on a supply port connecting an airtight space, a solenoid valve installed on a return port connecting the airtight space in the pump body with an input port through which oil is supplied to the pump body, and a controller to control the operation of the solenoid valve.

Method and control arrangement for controlling vehicle freewheel with engine off and power steering

A method (300) and control arrangement (210) for controlling a vehicle (100) to freewheel with engine off. The vehicle (100) has an engine (260) for propelling the vehicle (100) and a hydraulic power steering system (400). The hydraulic power steering system (400) comprises a primary power steering pump (270a) arranged to be driven by the engine (260) and a secondary power steering pump (270b). The method (300) includes: determining (301) when to start freewheeling the vehicle (100) with its engine off; and prior to starting the freewheeling of the vehicle (100) with engine off, determining (302) to start the secondary power steering pump (270b).

СИСТЕМА РУЛЕВОГО УПРАВЛЕНИЯ С УСИЛИТЕЛЕМ И МОБИЛЬНОЕ КОНТРОЛЬНОЕ УСТРОЙСТВО

Группа изобретений относится к области транспортного машиностроения. Система рулевого управления с усилителем содержит центральный блок управления, электродвигатель рулевого привода с усилителем и первый и второй гидравлические насосы, направляющий распределитель и первый приводной электродвигатель. Первый гидравлический насос соединен с двигателем на шасси. Первый приводной электродвигатель соединен со вторым гидравлическим насосом. Направляющий распределитель соединен с первым и вторым гидравлическими насосами и электродвигателем рулевого привода с усилителем. Центральный блок управления отдает команду запуска первого приводного электродвигателя. Приводной электродвигатель приводит в действие второй гидравлический насос. Мобильное контрольное устройство содержит транспортное средство, источник излучения и устройство обнаружения. Транспортное средство содержит упомянутую систему рулевого управления. Достигается возможность использования системы рулевого управления при незапущенном двигателе ...

Verstellpumpe

Verstellpumpe zum Zuführen von Betriebsflüssigkeit zu einer Fahrzeuglenkvorrichtung (5), wobei die Fahrzeuglenkvorrichtung (5) ausgelegt ist, um eine Hilfslenkkraft gemäß der Lenkbetätigung eines Lenkrades (1) hydraulisch zu erzeugen, wobei die Verstellpumpe Folgendes aufweist: – ein Pumpengehäuse (11) mit einem Pumpenteil-Aufnahmebereich (11a) innerhalb des Pumpengehäuses (11); – eine Antriebswelle (12), die drehbeweglich durch das Pumpengehäuse (11) gelagert ist; – ein Pumpenteil (13), das im Pumpenteil-Aufnahmebereich (11a) des Pumpengehäuses (11) aufgenommen und ausgelegt ist, um die Betriebsflüssigkeit durch das Drehen durch die Antriebswelle (12) anzusaugen und abzugeben; – einen Nockenring (14), der im Pumpenteil-Aufnahmebereich (11a) des Pumpengehäuses (11) aufgenommen und radial außerhalb des Pumpenteils (13) angeordnet ist, wobei er sich zusammen mit einer Änderung der Exzentrizität des Nockenrings (14) bezüglich einer Drehachse der Antriebswelle (12) bewegt, wobei die Änderung ...

Skid steered all terrain vehicle

A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear.

DIRECTION ASSISTEE DU TYPE ECONOMISANT L'ENERGIE

LA PRESENTE INVENTION CONCERNE UNE DIRECTION ASSISTEE POUR UN VEHICULE OU UN TRAJET D'HUILE D'UNE VANNE DE CONTROLE EST CONTROLE SELON L'OPERATION DE MANOEUVRE D'UN VOLANT ET UN FLUIDE EVACUE D'UNE POMPE A HUILE EST AMENE A UN MOYEN DE MISE EN ACTION POUR AIDER A L'OPERATION DE DIRECTION OU DE MANOEUVRE. SELON L'INVENTION, UN MOYEN ENTRAINE LA POMPE A HUILE 6 EN ETANT RELIE A UN MOTEUR 7 PAR UN EMBRAYAGE ELECTROMAGNETIQUE 8 QUI PEUT CHANGER LA QUANTITE DE TRANSMISSION DE ROTATION DU MOTEUR ET UN MOYEN DE MANOEUVRE 13 CONTROLE LA ROTATION DE LA POMPE A HUILE. L'INVENTION S'APPLIQUE NOTAMMENT A L'INDUSTRIE AUTOMOBILE.

PROCESS AND DEVICE OF MANAGEMENT Of an INTERNAL COMBUSTION ENGINE Of a MOTOR VEHICLE

Procédé de gestion d'un moteur à combustion interne (1) d'un véhicule automobile équipé d'un dispositif de direction (5) assisté par le moteur à combustion interne (1). En fonction d'une opération de braquage on forme un signal de réserve pour adapter une grandeur de sortie que doit fournir le moteur à combustion interne (1). Method of managing an internal combustion engine (1) of a motor vehicle equipped with a steering device (5) assisted by the internal combustion engine (1). Depending on a steering operation, a reserve signal is formed in order to adapt an output quantity to be supplied by the internal combustion engine (1).

VARIABLE CAPACITY TYPE PUMP TO SUPPLY WORKING FLUID TO A HYDRAULIC POWER STEERING SYSTEM FOR A VEHICLE SMOOTHLY

PURPOSE: A variable capacity type pump is provided to supply proper quantity of working fluid without delay according to rapid steering. CONSTITUTION: A variable capacity type pump(10) comprises a pump housing(11), a driving shaft(12), a pumping part(13), a cam ring(14), a base set point calculating circuit, and a control setting point calculating circuit. The driving shaft is supported to be rotated by the pump housing. The cam ring is installed in the pump housing. The base set point calculating circuit is operated by driving current passing through the control setting point calculating circuit. The control setting point calculating circuit calculates a control setting point based on a base set point and a steering angular acceleration. COPYRIGHT KIPO 2012 ...

자동차용 스티어링 오일 냉각장치

The present invention relates to a steering oil cooling apparatus for an automobile, and conventionally, there has been a problem that a cooling efficiency is lowered when oil is cooled by extending a steering oil recirculation pipe in a longitudinal direction by a predetermined length. Accordingly, the present invention provides an automotive steering oil cooling apparatus for cooling a steering oil sent from a steering oil pump driven by an engine of an automobile to a steering gear box and recirculating the steering oil to a steering gear box, A steering oil recirculation pipe 100 connected to the steering oil circulation pipe 100 at one end and connected to a steering oil pump at the other end and having a steering oil cooling guide installation unit 150 installed at one side thereof and a steering oil cooling guide installation unit 150 of the steering oil recirculation pipe 100, A steering oil cooling guide fixing bracket 200 fixedly coupled to one side of the steering oil cooling guide fixing bracket 200 and a steering oil cooling guide fixing bracket 200 fixed to the upper portion of the steering oil cooling guide fixing bracket 200, The steering angle? It is characterized in that consisting of; cooling guide 300.

POWER STEERING PUMPING APPARATUS FOR VEHICLE

SYSTEM WITH A COMPRESSOR AND WITH A CONSUMER IN A MOTOR VEHICLE

The invention relates to a system with a compressor (16) and with a consumer (20) which are coupled to a drivetrain (14, 18) and which extract energy from the latter. It is provided according to the invention that the consumer (20) is suitable for varying an absorption of power, which is made available to it by the drivetrain (14, 18), as a function of a power which is required for compressor operation and which is supplied from the drivetrain (14, 18) to the compressor (16). The invention also relates to a pump which has at least one pump chamber (24) which generates a pumping power during pumping operation. It is provided according to the invention that the pump additionally has at least one pump chamber (22) which generates no pumping power or a reduced pumping power during pumping operation.

FUEL EFFICIENT HYDRAULIC POWER STEERING

A hydraulic power steering system that maintains proportional pressure control between an input side of a gear and assist pressures internal to the steering gear by relying upon a control valve. A pressure differential is maintained between the input side of a gear and assist pressures internal to the steering gear throughout certain events. Those events include running the pump to fully charge the accumulator, idling the pump after fully charging the accumulator, discharging pressure from the fully charged accumulator at an onset of a steering event having a demand for steering load, recovering the discharged pressure of the accumulator by running the pump after turning on the pump at the onset of the steering event, and opening the relief valve in the valve manifold during the steering event.

PUMP SPEED COMMAND GENERATION ALGORITHM FOR MAGNETORHEOLOGICAL POWER STEERING COUPLING

A method for determining a speed of a power steering pump used in a power steering assembly of a vehicle that has particular application in a vehicle using a magneto-rheological hydraulic power steering (MRHPS) system for improving the fuel efficiency and ride comfort of the vehicle, and for reliable functioning of the power steering system. The method includes determining an angle of rotation of the steering wheel and a rate of change of the angle of rotation of the steering wheel based on the angle of rotation of the steering wheel of the vehicle. The method further includes determining the speed of the vehicle and the speed of the power steering pump based on the angle of rotation of the steering wheel, the rate of change of the angle of rotation of the steering wheel and the speed of the vehicle.

Power assisted steering system for a vehicle, with hydraulic open center

Power-assisted steering system for motor vehicle has hydraulically open center and mechanical linkage between driver's steering wheel and steering gear to transfer driver's steering wishes to vehicle wheels Overlay gearing (12) can add a correcting steering angle to a steering angle preset by a driver by means of a suitably triggered electric motor (13). Assigned to steering gear (3) for power assistance, a synchronizing cylinder (5) is affected by a hydraulic substance regarding adjustable torque support on a steering wheel (1) via an electronically triggered directional control valve (6) or a turning valve.

Hydraulic system

A hydraulic system for supplying fluid to an actuator comprising a variable speed prime mover drivingly coupled to a variable displacement hydraulic pump. The system is configured to deliver hydraulic fluid via fluid conduits to an actuator. It may deliver hydraulic fluid to an actuator at a first hydraulic pressure at a first rate of pressure rise; and at a second hydraulic pressure at a second rate of pressure rise. The first hydraulic pressure may be greater than the second hydraulic pressure; and the first hydraulic rate of pressure rise may be lower than the second hydraulic rate of pressure rise.

REAR STEERING HYDRAULIC SYSTEM

A hydraulic system for controlling a pair of steerable caster wheels includes a left steering command valve, a right steering command valve, and a rear steering control valve. A supply pressure fluid circuit interconnects a pressure source and the rear steering control valve. A command valve supply fluid circuit interconnects the rear steering control valve with both the right steering command valve and the left steering command valve. A left side steering fluid circuit interconnects a left side actuator and the left steering command valve. A right side steering fluid circuit interconnects a right side actuator and the right steering command valve. A fluidic tie rod fluid circuit interconnects both the left side actuator and the right side actuator with the rear steering control valve. A tank return fluid circuit interconnects the rear steering control valve, the left and right steering command valves, and a tank.

Automobile accessory drive train

Steering device, construction machine with a steering device and method for steering a steerable machine

A steering device for a steerable machine, particularly a construction machine, comprising a steering element for manual input of steering commands, a steering actuator for driving a steering adjustment of a travel unit of the construction machine, and a transmission device, which is arranged between the steering element and the steering actuator, the transmission device including an actuator orbitrol for driving the steering actuator. Furthermore, the invention relates to a construction machine having such a steering device, as well as to a method for steering a steerable machine, particularly a construction machine.

Power steering apparatus

An apparatus for use in turning steerable vehicle wheels includes a first pump driven by an engine of the vehicle to supply fluid under pressure to a power steering motor assembly through a supply conduit. A second pump driven by the engine of the vehicle supplies fluid under pressure to the power steering motor assembly when the flow of fluid in the supply conduit is below a predetermined value. The second pump is inactive when the flow of fluid in the supply conduit is above the predetermined value. The second pump has vanes located in slits. A valve which is in fluid communication with the slits has a first condition in which fluid under pressure is supplied to the slits. The valve has a second condition in which the slits are in fluid communication with a reservoir.

WORK VEHICLE

A work vehicle includes: a hydraulic pump that is driven by an engine; a hydraulic actuator that is driven by hydraulic oil supplied from the hydraulic pump; a switching valve configured to switch from one to the other of a first state in which the hydraulic oil supplied from the hydraulic pump is supplied to a first channel and a second state in which the hydraulic oil supplied from the hydraulic pump is supplied to a second channel; a restriction operation device configured to generate an operation signal that restricts the drive of the hydraulic actuator; and a controller that controls the switching valve. The controller includes: an operation signal acquisition unit configured to acquire the operation signal; and an instruction output unit configured to output, to the switching valve, a control instruction that restricts the drive of the hydraulic actuator with the engine driving, in response to the operation signal.

Integrated power steering system for front and rear wheels of vehicle and control method thereof

STEERING OIL COOLING DEVICE FOR VEHICLE

The present invention relates to a steering oil cooling device for a vehicle. In the prior art, there is a problem that the cooling efficiency is lowered while cooling oil by extending a steering oil recirculation pipe as long as a certain length in the longitudinal direction. Thus, the steering oil cooling device for a vehicle cools steering oil transmitted to a steering gear box from a steering oil pump driven by an engine of a vehicle and recirculates the steering oil to the steering gear box. The steering oil cooling device for a vehicle comprises a steering oil recirculation pipe (100) which is connected to a steering gear box of a vehicle at one end, is connected to a steering oil pump at the other end, and has an oil cooling guide installation part (150) at one side; a steering oil cooling guide fixing bracket (200) which is fixed to one side of the steering oil cooling guide installation part (150) of the steering oil recirculation pipe (100); and a steering oil cooling guide (300 ...

POWER STEERING APPARATUS

An apparatus for use in turning steerable vehicle wheels includes a power steering motor assembly connected with the steerable vehicle wheels. A first pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine, to supply fluid under pressure to the power steering motor assembly. A second pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine. A valve connected with the power steering motor assembly and the second pump directs fluid flow from the second pump to at least one of the power steering motor assembly and reservoir during operation of both the first pump and the second pump. A pumping mechanism includes a first pumping area defining the first pump and a second pumping area defining the second pump. The first pumping area is smaller than the second pumping area.

FUEL EFFICIENT HYDRAULIC POWER STEERING

A hydraulic power steering system that maintains proportional pressure control between an input side of a gear and assist pressures internal to the steering gear by relying upon a control valve. A pressure differential is maintained between the input side of a gear and assist pressures internal to the steering gear throughout certain events. Those events include running the pump to fully charge the accumulator, idling the pump after fully charging the accumulator, discharging pressure from the fully charged accumulator at an onset of a steering event having a demand for steering load, recovering the discharged pressure of the accumulator by running the pump after turning on the pump at the onset of the steering event, and opening the relief valve in the valve manifold during the steering event.

OPERATING METHOD AND DEVICE FOR INTERNAL-COMBUSTION ENGINE OF VEHICLE

PROBLEM TO BE SOLVED: To provide an operating method and device for an internal-combustion engine of a vehicle assisted by the internal-combustion engine and capable of making dynamic compensation of a load request of its steering device. SOLUTION: The operating method and device for the internal-combustion engine 1 of the vehicle is arranged so as to make assisted by the internal-combustion engine 1 and capable of making dynamic compensation of the load request of the steering device 5, in which a margin signal for adapting the output variable to be output by the internal-combustion engine 1 is formed as a function of the steering process. COPYRIGHT: (C)2005,JPO&NCIPI ...

Pumpenvorrichtung und zugehöriges Steuerungs-/Regelungsverfahren

Pumpenvorrichtung zur Zuführung eines Arbeitsfluids zu einer Lenkvorrichtung für ein Fahrzeug, wobei die Pumpenvorrichtung aufweist:- ein Pumpengehäuse (20d) mit einem Pumpenelement-Aufnahmebereich (20e);- eine Antriebswelle (20a1), die vom Pumpengehäuse (20d) drehbar abgestützt wird;- einen Nockenring (20c), der im Pumpenelement-Aufnahmebereich (20e) beweglich angeordnet ist; und- ein Pumpenelement, das im Nockenring (20c) angeordnet ist, wobei das Pumpenelement eingerichtet ist, von der Antriebswelle (20a1) rotierend angetrieben zu werden, um das Arbeitsfluid anzusaugen und das angesaugte Arbeitsfluid auszustoßen und eine spezifische Ausstoßmenge zu variieren, die eine Ausstoßmenge des Arbeitsfluids pro einer Umdrehung des Pumpenelementes gemäß einer Variation eines exzentrischen Maßes des Nockenrings (20c) in Bezug auf die Antriebswelle (20a1) ist,gekennzeichnet durch- ein Solenoid (21a), das eingerichtet ist, auf der Basis eines Lenkzustands und einer Fahrzeuggeschwindigkeit antriebsmäßig ...

Hyraulische Servolenkung

Die Erfindung betrifft eine hydraulische Servolenkung 1 für ein Fahrzeug, mit einer Pumpe 2 zum Fördern von Druckmitteln aus einem Druckmittelbehälter 3 zu einem Verbraucher 4, wobei die Pumpe 2 drehzahlabhängig von einem Fahrzeugmotor angetrieben ist. Mit einer Regeleinrichtung 5 zur Regelung eines Volumenstroms zu dem Verbraucher 4 und mit einer in dem Druckmittelstrom von der Pumpe 2 zu dem Verbraucher 4 angeordneten Blende 6 mit einer veränderbaren, offenen Querschnittsfläche 7, wobei sich die offene Querschnittsfläche 7 bei ansteigendem, an der Blende 6 anstehendem Druck vergrößert. Vorgesehen ist, dass die Blende 6 wenigstens in einem die offene Querschnittsfläche 7 beeinflussbaren Durchlassbereich aus einem flexiblen und/oder kompressiblen Material gebildet ist, welches bei ansteigendem Druck an der Blende 6 an seine Form derart verändert, dass sich die offene Querschnittsfläche 7 verändert.

HYDRAULIC SYSTEM

A hydraulic system for supplying fluid to an actuator comprising a variable speed prime mover drivingly coupled to a variable displacement hydraulic pump. The system is configured to deliver hydraulic fluid via fluid conduits to an actuator. It may deliver hydraulic fluid to an actuator at a first hydraulic pressure at a first rate of pressure rise; and at a second hydraulic pressure at a second rate of pressure rise. The first hydraulic pressure may be greater than the second hydraulic pressure; and the first hydraulic rate of pressure rise may be lower than the second hydraulic rate of pressure rise.

CLUTCH DEVICE FOR A POWER STEERING OIL PUMP, FOR GENERATING THE HYDRAULIC PRESSURE BY USING THE POWER OF AN ENGINE ONLY IN THE OPERATION OF A STEERING WHEEL

PURPOSE: A clutch device for a power steering oil pump is provided to save the energy and to improve the fuel ratio by shutting off the connection of the body side shaft and the pulley side shaft if the steering wheel is not operated by a driver. CONSTITUTION: A clutch device for a power steering oil pump is composed of a pulley shaft(13), a body shaft(14) a clutch plate(20), an elastic member(31), a check valve(35), a solenoid valve(39), and a controller(43). The clutch plate transmits/shuts off the rotation power of the pulley side shaft to the body side shaft. The elastic member transmits the rotation power of the pulley side shaft to the body side shaft by applying the elastic force to the clutch plate. The solenoid valve is mounted on the return point interlinking the inner closed space of a pump body and an oil input port. COPYRIGHT KIPO 2010 ...

Steering system for a vehicle with power steering

HYDRAULIC POWER STEERING SYSTEM

The invention relates to a hydraulic power steering system (1) for a vehicle, comprising a pump (2) for conveying pressure medium from a pressure medium reservoir (3) to a load (4), wherein the pump (2) is driven by a vehicle engine according to the rotational speed, having a control device (5) for controlling a volumetric flow rate to the load (4), and having an orifice (6), which has an open cross-sectional area (7) that can be changed and which is arranged in the pressure medium flow from the pump (2) to the load (4), wherein the open cross-sectional area (7) increases when the pressure present at the orifice (6) rises. It is provided that the orifice (6) is made of a flexible and/or compressible material at least in a passage area that can affect the open cross-sectional area (7), wherein when the pressure at the orifice (6) rises, said material changes the shape thereof in such a way that the open cross-sectional area (7) changes.

Hybrid steering system operating method for motor vehicle, involves determining whether information contains details about straight route to be passed by vehicle, and deactivating hydraulic steering when preset conditions are satisfied

The method involves determining whether a manual hand torque transferred to a steering wheel (11), a steering angle and a speed difference of an object located in a detection area of an object detection device are lesser than threshold values, respectively. Determination is made whether status of a direction indicator and a service brake indicate inactivity of the indicator and the brake. Determination is made whether route information contains details about a straight route to be passed by the vehicle. A hydraulic steering (7) is deactivated when all the determined conditions are satisfied.

SKID STEERED ALL TERRAIN VEHICLE

A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear.

SKID STEERED ALL TERRAIN VEHICLE

A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear.

DRIVE TRAIN FOR A COMPRESSOR AND A HYDRAULIC PUMP

STEERING BOOST SYSTEM

Hydraulic drive device

파워 조향 장치

... 조향 가능한 차륜을 선회시키는 데에 사용되는 장치는, 조향 가능한 차륜에 연결되는 파워 조향 모터 조립체를 포함한다. 파워 조향 모터 조립체에 연결되는 제1 펌프는 압축 상태의 유체를 파워 조향 모터 조립체에 공급하도록 엔진의 작동 중에 차량의 엔진에 의해 연속적으로 구동된다. 파워 조향 모터 조립체에 연결되는 제2 펌프는 엔진의 작동 중에 차량의 엔진에 의해 연속적으로 구동된다. 파워 조향 모터 조립체와 제2 펌프에 연결되는 밸브는 제1 펌프와 제2 펌프 양자의 작동 중에 유체 유동을 제2 펌프로부터 파워 조향 모터 조립체와 저장조 중 적어도 하나로 지향시킨다. 펌핑 메카니즘은 제1 펌프를 형성하는 제1 펌핑 영역과 제2 펌프를 형성하는 제2 펌핑 영역을 포함한다. 제1 펌핑 영역은 제2 펌핑 영역보다 작다.

Rear steering cylinder dampening

A hydraulic system for controlling at least one steerable caster wheel of an agricultural machine includes a first actuator having a piston and including an inboard fluid port for supplying fluid to a first side of the piston to move the piston in a first direction, and an outboard fluid port for supplying fluid to a second side of the piston to move the piston in a second direction. A first fluid pressure equalizer is fluidically coupled to the first side actuator and operable to equalize fluid pressure over a period of time between the first side and the second side of the piston of the first side actuator.

Servolenkvorrichtung

Eine durch einen Antriebsmotor angetriebene Pumpe ist mit einer Servolenkmotoranordnung verbunden. Ein Elektromotor treibt eine Pumpe an, die mit der Servolenkmotoranordnung verbunden ist. Eine Steuervorrichtung bewirkt den Betrieb des Elektromotors, um die Pumpe anzutreiben, um Strömungsmittel zu der Servolenkmotoranordnung mit einer Flussrate zu liefern, die auf der Drehzahl des Antriebsmotors basiert.

DRIVE TRAIN FOR A COMPRESSOR AND A HYDRAULIC PUMP

The invention relates to a drive train (30) for a compressor (12) and a hydraulic pump (24) of a motor vehicle that, for assisting steering, has a hydraulic power steering (14) and an electric superimposed steering system (36). The compressor (12) and the hydraulic pump (24) are driven by a common output shaft (30) of a motor vehicle driving motor (16). According to the invention, means (10, 20) are provided that reduce the power delivered via the output shaft (30) to the compressor (12) and the hydraulic pump (24) when the demands upon the compressor (12) and upon the power steering system (36) allow this to occur. The invention also relates to a method for driving a compressor and a hydraulic pump of a motor vehicle that, for assisting steering, has a hydraulic power steering as well as an electric superimposed steering system.

SKID STEERED ALL TERRAIN VEHICLE

A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear.

Power steering systems and methods

Power steering systems and methods to improve efficiency and performance of vehicle power steering systems. In one embodiment, there is provided an engine driven positive displacement hydraulic pump, a rotary valve coupled to a steering shaft for receiving hydraulic fluid under pressure in a rotary valve inlet and providing a differential pressure to a steering rack piston for a steering boost responsive to a torque exerted on the steering shaft, valving coupled between an output of the hydraulic pump, the rotary valve inlet and the hydraulic pump input for controllably coupling the output of the hydraulic pump to the rotary valve inlet or an input of the hydraulic pump, and a controller coupled to valving to maintain a flow rate of hydraulic fluid coupled to the rotary valve responsive to a pressure sensor output. Other embodiments are disclosed.

Hydraulic steering device for motor vehicle, has electrically actuated control valve for adjusting volume flow of hydraulic unit, where control valve is arranged in bypass and designed for adjusting volume flow that flows through bypass

The steering device has a pump (3), a hydraulic steering gear (4) and a reservoir (5) integrated in a hydraulic circuit (2). A bypass (11) is adjacent to the pump. An electrically actuated control valve is used for adjusting volume flow of a hydraulic unit. The control valve is arranged in the bypass and designed for adjusting the volume flow, which flows through the bypass. A pressure pipeline (9) of the hydraulic circuit connects the pump directly with the steering gear. The pump is connected with the steering gear without a valve and in an unrestricted manner.

Kraftstoffsparendes hydraulisches Servolenksystem

Hydraulisches Servolenksystem, aufweisend eine Pumpe, einen Speicher (12) stromaufwärts der Pumpe, ein Lenkventil (18) in einem Ventilblock stromaufwärts der Pumpe, ein Überdruckventil (22) in dem Ventilblock, ein Lenkgetriebe (19) zum wirksamen Schalten des Lenkventils (18), und ein Steuerventil (26), das in dem Ventilblock angeordnet ist, um eine Proportionaldrucksteuerung zwischen einer Eingangsseite des Lenkventils (18) in dem Ventilblock und dem Lenkgetriebe (19) durch Beibehalten einer Druckdifferenz zwischen der Eingangsseite des Lenkventils (18) und dem Lenkgetriebe (19) bei Vorgängen aufrechtzuerhalten, die das Inbetriebsetzen der Pumpe zum vollständigen Laden des Speichers (12), das Außerbetriebsetzen der Pumpe nach dem vollständigen Laden des Speichers (12), das Auslassen von Druck aus dem vollständig geladenen Speicher (12) zu Beginn eines Lenkvorgangs mit einer Anforderung zur Lenklast, das Zurückgewinnen des ausgelassenen Drucks des Speichers (12) durch Inbetriebsetzen der ...

System with a compressor and with a consumer in a motor vehicle

The invention relates to a system with a compressor (16) and with a consumer (20) which are coupled to a drivetrain (14, 18) and which extract energy from the latter. According to the invention the consumer (20) is suitable for varying an absorption of power, which is made available to it by the drivetrain (14, 18), as a function of a power which is required for compressor operation and which is supplied from the drivetrain (14, 18) to the compressor (16). The invention also relates to a pump which has at least one pump chamber (24) which generates a pumping power during pumping operation, such that the distribution of the total power consisting of the power required for compressor operation during the compression stroke of the compressor (16) and the power absorbed by the consumer (20) is substantially constant.

차량용 파워 스티어링 피스톤 가변 펌프

... 본 발명은 압력감응밸브의 이동에 의해 사판의 각도를 조정함으로써, 차량 엔진 속도에 따른 오일 펌프 용량을 가변시켜 펌프의 구동 동력을 최소화할 수 있는 차량용 파워 스티어링 피스톤 가변 펌프를 제공하는 것을 목적으로 하다. 상기 목적을 달성하기 위해, 본 발명에 따른 차량용 파워 스티어링 피스톤 가변 펌프는, 원통 형상의 하우징(10)과, 상기 하우징 내에 설치되며, 일 측에 오일이 흡입되는 흡입 유로(11) 및 타측에 오일이 토출되는 토출 유로(12)가 형성되는 실린더 블록(20)과, 상기 하우징(10) 중앙에서 볼 베어링(14) 및 메탈 베어링(15)에 의해 지지되는 회전축(13)과, 상기 하우징(10)의 내면에 설치되며 상기 실린더 블록(20)에서 형성된 흡입 유로(81)와, 토출 유로(82)가 통과하는 플레이트(80)와, 상기 플레이트(80)와 상기 실린더 블록(20) 사이에 설치되는 스러스트 베어링(16)과, 상기 스러스트 베어링(16)이 설치되는 상기 플레이트(80)의 반대 측에 설치되는 복수 개의 피스톤 홀(25)과, 내부에 제 1 탄성 부재를 포함하며 복수 개의 상기 피스톤 홀(25) 내에서 미끄럼 마찰하여 이동하는 피스톤(22)과, 상기 피스톤 홀(25)의 내면과 상기 피스톤(22) 사이의 공간에 형성되는 피스톤 지지 압력실(26)과, 일 면에 설치된 스러스트 베어링(41)에 의해 상기 피스톤(22)을 지지하도록 설치되는 사판(40)과, 상기 사판(40)의 타면 일 측을 고정하는 원형핀(41)과, 상기 사판(40)의 타면 타 측을 지지하는 지지 피스톤(31)과, 상기 사판(40)의 타 측 측면에 포함되는 사판 안내부(42)와, 상기 하우징(10)의 상부에 형성되는 압력 감응 밸브(55)를 포함한다.

Lenkeinrichtung, Baumaschine mit einer Lenkeinrichtung und Verfahren zum Lenken einer lenkbaren Maschine

Die Erfindung betrifft eine Lenkeinrichtung für eine lenkbare Maschine, insbesondere Baumaschine, umfassend ein Lenkelement zur manuellen Eingabe von Lenkbefehlen, einen Lenkaktor zum Antrieb einer Lenkeinstellung eines Fahrwerks der Baumaschine und eine Übertragungseinrichtung, die zwischen dem Lenkelement und dem Lenkaktor angeordnet ist, wobei die Übertragungseinrichtung ein Aktororbitrol zum Antrieb des Lenkaktors aufweist. Die Erfindung betrifft ferner eine Baumaschine mit einer solchen Lenkeinrichtung sowie ein Verfahren zum Lenken einer lenkbaren Maschine, insbesondere einer Baumaschine.

Verfahren zum kontrollierten Abstellen einer mit einer hydraulischen Lenkunterstützung ausgestatteten Brennkraftmaschine

Auxiliary unit connected to motor vehicle engine via belt and pulley drive

The device has two functional parts (CP,PP), each providing the full functionality of an auxiliary device. A housing for enclosing both parts has an axis along which both parts are aligned. A drive shaft (6) which drives both parts extends along the housing axis and is rotatably mounted on the housing so that it is in working engagement with both functional parts. The first or second functional part can be a coolant compressor for an air-conditioning system or a generator.

Kupplungskompressor- und Lenkhilfepumpenanordnung sowie Verfahren zu deren Steuerung

Die Erfindung betrifft ein Fahrzeug (10) mit einer Antriebswelle (14), die Drehmoment an einen ersten Antrieb (16) überträgt, einem Kupplungskompressor (28) und einer Lenkhilfepumpe (44), wobei die Lenkhilfepumpe (44) von einer Abtriebswelle (66) angetrieben ist, die Drehmoment von dem ersten Antrieb (16) an die Lenkhilfepumpe (44) überträgt. Die Erfindung betrifft weiterhin ein Verfahren zur Steuerung einer Lenkhilfepumpe (44) und eines Kupplungskompressors (28) in einem Fahrzeug. Erfindungsgemäß ist vorgesehen, dass eine weitere Abtriebswelle (68) zum Antreiben des Kupplungskompressors (28) vorgesehen ist und dass die weitere Abtriebswelle (68) an einem zweiten Antrieb (18) angeordnet ist, an den Drehmoment von der von dem Motor (12) angetriebenen Antriebswelle (14) übertragen wird, wobei die weitere Abtriebswelle (68) Drehmoment von dem zweiten Antrieb (18) an den Kupplungskompressor (28) überträgt.

METHODS AND APPARATUS TO MODIFY STEERING ASSIST OF A HYDRAULIC POWER STEERING SYSTEM

Methods, apparatus, and articles of manufacture are disclosed to modify a steering assist of a hydraulic power steering system. A disclosed method includes calculating modifier values based on sensor data of a vehicle, calculating a torque modifier value based on the modifier values, and generating a final torque assist based on the torque modifier value and a base torque assist, the final torque assist to be applied to a steering system of the vehicle. 1. An apparatus comprising: calculate modifier values based on sensor data of a vehicle;', 'calculate a torque modifier value based on the modifier values;, 'a torque modifier toan electronic control unit to generate a final torque assist based on the torque modifier value and a base torque assist; anda torque overlay unit to apply the final torque assist to a steering system of the vehicle.2. The apparatus of claim 1 , wherein the sensor data of the vehicle includes one or more of steering velocity data claim 1 , steering angle data claim 1 , steering torque data claim 1 , vehicle speed data claim 1 , engine torque data claim 1 , or engine RPM data.3. The apparatus of claim 1 , wherein one of the modifier values is a steering angle modifier value based on a steering angle of the vehicle claim 1 , the steering angle modifier value decreasing when the steering angle increases.4. The apparatus of claim 1 , wherein one of the modifier values is a steering velocity modifier value based on a steering velocity claim 1 , the steering velocity modifier value to decrease when the steering velocity increases.5. The apparatus of claim 1 , wherein one of the modifier values is a pressure modifier value based on a calculated steering pressure claim 1 , the pressure modifier value to decrease when the calculated steering pressure increases.6. The apparatus of claim 1 , wherein one of the modifier values is an engine RPM modifier value based on a calculated engine performance claim 1 , the engine RPM modifier value to decrease when ...

Apparatus, system and method for magnetorheological clutch diagnostics

An apparatus and method for monitoring and diagnosing the coil temperature of a magnetorheological (MR) clutch connected to a power steering pump of a vehicle is disclosed. The apparatus includes a processing circuit, and a storage medium, readable by the processing circuit, for storing instructions for execution by the processing circuit for receiving a plurality of input signals representative of dynamic operating conditions relating to the vehicle, using the input signals to generate an output signal representative of a temperature of the coil of the MR clutch, determining from the output signal whether the temperature of the coil exceeds a threshold limit, and in response to the temperature of the coil exceeding a threshold limit, triggering at least one of a remedial action and a data storage algorithm.

Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine eines Fahrzeugs

Verfahren zum Betreiben einer Brennkraftmaschine (1) eines Fahrzeugs mit einer von der Brennkraftmaschine (1) unterstützten Lenkvorrichtung (5), wobei in Abhängigkeit eines Lenkvorgangs ein Vorhaltsignal zur Anpassung einer von der Brennkraftmaschine (1) abzugebenden Ausgangsgröße gebildet wird, dadurch gekennzeichnet, dass das Vorhaltsignal bei abnehmendem Lenkwinkel abgebaut wird.

Fremdkraftlenkung-Pumpvorrichtung für ein Fahrzeug

Eine Fremdkraftlenkung-Vorrichtung für ein Fahrzeug kann aufweisen einen Antriebsmotor (3), eine Fremdkraftlenkungspumpe (5), welche mit einer ersten Seite einer Welle (4) des Antriebsmotors (3) verbunden ist, einen Kompressor (7), welcher mit einer zweiten Seite der Welle (4) des Antriebsmotors (3) verbunden ist, und eine Kupplung (9), welche zwischen dem Antriebsmotor (3) und dem Kompressor (7) angeordnet ist und eine Leistung zwischen dem Antriebsmotor (3) und dem Kompressor (7) unterbricht.

조타 제어 장치

... 복수의 권선 세트를 갖는 전동 모터와, 복수의 권선 세트에 흘리는 모터 구동 전류를 출력하는 복수의 어시스트 전류 출력부를 구비한 조타 제어 장치에 있어서, 이상이 발생하고 있는 상태를 재빨리 운전자가 깨닫게 함과 함께, 이상이 발생하고 있는 상태에서의 조종성의 저하를 억제한다. 본 발명의 조타 제어 장치는, 복수의 권선 세트(11, 12)를 갖고, 운전자의 핸들 조작을 보조하기 위한 어시스트 토크를 발생시키는 전동 모터(10)와, 전동 모터(10)를 구동하기 위하여 권선 세트(11, 12)에 흘리는 모터 구동 전류를 출력하는 복수의 어시스트 전류 출력부(51, 52)를 구비함과 함께, 복수의 권선 세트(11, 12) 및 복수의 어시스트 전류 출력부(51, 52)의 이상 상태를 검출하고, 이상 상태에 기초하여 이상 상태의 평가 레벨을 판정하는 평가 레벨 판정부(60)를 구비하고, 평가 레벨에 기초하여, 전동 모터(10)가 발생시키는 어시스트 토크의 크기를 변화시킨다.

STEERING BOOST SYSTEM

A hydraulic steering boost system (power assisted steering) for vehicles, comprising a steering boost pump (1) and a modifiable multiplication gear mechanism (3), particularly a vertical drive for the steering boost pump.

Fluid reservoir

A power assist system for a motor vehicle subsystem having a component support structure is described. The power assist system comprises a fluid reservoir, a pump having an inlet for receiving a fluid from the reservoir and a pump securing structure including at least one aperture. The system additionally includes at least one fastener. The reservoir fluid outlet is directly coupled to the pump inlet and the at least one fastener secures the reservoir mounting structure by passing directly through the pump mounting structure and attaching to the motor vehicle component support structure.

POWER STEERING SYSTEM FOR A VEHICLE

In a vehicle including a traction engine designed to drive wheels through a driveline that includes an upstream portion which is connected to the engine and a downstream portion which is permanently connected to the drive wheels, the power steering system includes a hydraulic circuit including a fluid tank and a steering actuator. The power steering system further includes a first pump which is driven by mechanical power from the downstream portion of the driveline, and a second pump which is driven by an electric motor. The first and second pumps are arranged in parallel between the fluid tank and the steering actuator and are capable of supplying fluid from the fluid tank to the steering actuator at the same time. 1. A power steering system for a vehicle , the vehicle comprising a traction engine designed to drive wheels through a driveline comprising an upstream portion which is connected to the engine and a downstream portion which is permanently connected to the drive wheels , the power steering system comprisinga hydraulic circuit including a fluid tank and a steering actuator,a first pump which is driven by mechanical power from the downstream portion of the driveline; anda second pump which is driven by an electric motor;wherein the first and second pumps are arranged in parallel between the fluid tank and the steering actuator and are capable of supplying fluid from the fluid tank to the steering actuator at the same time.2. The power steering system according to claim 1 , wherein it further comprises an electronic control unit capable of controlling the electric motor which drives the second pump claim 1 , the electronic control unit being designed to make the second pump deliver a fluid flow claim 1 , at low vehicle speed claim 1 , which is high enough to compensate for the low fluid flow delivered by the first pump claim 1 , in order to ensure a sufficient fluid supply to the steering actuator.3. The power steering system according to claim 2 , wherein ...

Motor vehicle comprising a power steering pump and an air compressor

Die Erfindung betrifft ein Kraftfahrzeug, insbesondere Lastkraftwagen oder Omnibus, mit einem Antriebsmotor, einer vom Antriebsmotor aus angetriebenen Lenkhilfepumpe (1) und einem Luftpresser (2). Erfindungsgemäß ist der Luftpresser (2) von der Lenkhilfepumpe (1) her angetrieben und von diesem Antrieb durch eine zwischen Lenkhilfepumpe (1) und Luftpresser (2) angeordnete schaltbare Kupplung (3) an- und abkoppelbar. Auf diese Weise ist eine sicher funktionierende Lenkung im Fahrzeug gewährleistet, aber auch ein problemloses Zu- und Abschalten des Luftpressers (2) möglich.

Hilfskraftunterstütztes Lenksystem für ein Kraftfahrzeug, mit hydraulischer offener Mitte

Die Erfindung betrifft ein hilfskraftunterstütztes Lenksystem für ein Kraftfahrzeug, mit hydraulisch offener Mitte, mit einer mechanischen Verbindung zwischen dem Lenkrad des Fahrers und einem den Fahrer-Lenkwunsch an den lenkbaren Fahrzeug-Rädern umsetzenden Lenkgetriebe sowie mit einem Überlagerungsgetriebe, über das dem vom Fahrer vorgegebenen Lenkwinkel mittels eines geeignet angesteuerten Elektromotors ein Korrektur-Lenkwinkel hinzugefügt werden kann, wobei ein zur Kraftunterstützung dem Lenkgetriebe zugeordneter Gleichlaufzylinder im Hinblick auf eine einstellbare Momentenunterstützung am Lenkrad über ein elektronisch ansteuerbares Wegeventil oder über ein von einem geeignet angesteuerten Elektromotor betätigtes Drehventil mit Hydraulikmedium beaufschlagt wird und wobei eine dem Gleichlaufzylinder das Hydraulikmediums zuführende Pumpe mit bedarfsangepasster Leistung fördert und hierzu als Verstellpumpe ausgebildet ist oder im Hinblick hierauf mit unabhängig von der Drehzahl des Pumpen-Antriebsaggregats ...

Kraftfahrzeug mit Lenkhilfepumpe und Luftpresser

Servolenksystem und Fluidkupplung für ein Servolenksystem

Servolenksystem (10) für ein Fahrzeug, das einen Motor mit einer Antriebswelle (20) besitzt, wobei das Servolenksystem (10) ein Servolenkgetriebe (12) und eine Hydropumpe (24) zum Beaufschlagen des Servolenkgetriebes (12) mit Druck besitzt und umfasst: eine Fluidkupplung (122); einen elektronischen Controller (26), der betreibbar ist, um anhand einer empfangenen Eingabe (32) ein variables Steuersignal zu liefern, um dadurch das über die Fluidkupplung (122) übertragene Drehmoment zu variieren; wobei die Fluidkupplung (122) die Antriebswelle (20) mit der Hydropumpe (24) verbindet; wobei die Fluidkupplung (122) eine Spule (212) umfasst, die mit dem elektronischen Controller (26) funktional verbunden ist; wobei die Fluidkupplung (122) einen magnetisch leitfähigen Kern (214) umfasst, der um die Spule (212) angeordnet ist; und die Fluidkupplung (122) einen inneren Rotor (152), der mit der Hydropumpe (24) funktional verbunden ist, und einen äußeren Rotor (174), der von dem inneren Rotor (152) ...

Servolenkungsvorrichtung

Eine Vorrichtung zur Verwendung beim Einschlagen von lenkbaren Fahrzeugrädern umfasst eine erste Pumpe, die von einem Motor des Fahrzeugs angetrieben wird, um einer Servolenkungsmotorbaugruppe über eine Versorgungsleitung druckbeaufschlagtes Fluid zuzuführen. Eine zweite vom Motor des Fahrzeugs angetriebene Pumpe führt der Servolenkungsmotorbaugruppe druckbeaufschlagtes Fluid zu, wenn der Fluidstrom in der Versorgungsleitung unter einem vorbestimmten Wert liegt. Die zweite Pumpe ist inaktiv, wenn der Fluidstrom in der Versorgungsleitung über dem vorbestimmten Wert liegt. Die zweite Pumpe weist Lamellen auf, die in Schlitzen angeordnet sind. Ein Ventil, welches in Fluidverbindung mit den Schlitzen steht, hat einen ersten Zustand, in dem den Schlitzen druckbeaufschlagtes Fluid zugeführt wird. Das Ventil weist einen zweiten Zustand auf, in welchem die Schlitze in Fluidverbindung mit einem Sammelbehälter stehen.

POWER STEERING APPARATUS

An apparatus for use in turning steerable vehicle wheels includes a power steering motor assembly connected with the steerable vehicle wheels. A first pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine, to supply fluid under pressure to the power steering motor assembly. A second pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine. A valve connected with the power steering motor assembly and the second pump directs fluid flow from the second pump to at least one of the power steering motor assembly and reservoir during operation of both the first pump and the second pump. A pumping mechanism includes a first pumping area defining the first pump and a second pumping area defining the second pump.

Apparatus, system and method for magnetorheological clutch diagnostics

An apparatus and method for monitoring and diagnosing the coil temperature of a magnetorheological (MR) clutch connected to a power steering pump of a vehicle is disclosed. The apparatus includes a processing circuit, and a storage medium, readable by the processing circuit, for storing instructions for execution by the processing circuit for receiving a plurality of input signals representative of dynamic operating conditions relating to the vehicle, using the input signals to generate an output signal representative of a temperature of the coil of the MR clutch, determining from the output signal whether the temperature of the coil exceeds a threshold limit, and in response to the temperature of the coil exceeding a threshold limit, triggering at least one of a remedial action and a data storage algorithm.

Vorrichtung zum Gebrauch beim Verschwenken lenkbarer Fahrzeugräder

Eine Vorrichtung zum Gebrauch beim Verschwenken lenkbarer Fahrzeugräder umfasst einen hydraulischen Servolenkmotor. Eine Pumpe ist betätigbar, um hydraulisches Strömungsmittel an den Servolenkmotor zu liefern. Ein Zahnradsatz bzw. Getriebesatz ist mit dem Motor des Fahrzeugs und der Pumpe verbunden. Der Getriebesatz ist betätigbar, um die Pumpe mit einer ersten Geschwindigkeit während des Verschwenkens der lenkbaren Fahrzeugräder bei relativ niedrigen Fahrzeuggeschwindigkeiten anzutreiben. Der Getriebesatz ist betätigbar, um die Pumpe mit einer zweiten Geschwindigkeit während des Verschwenkens der lenkbaren Fahrzeugräder bei relativ hohen Fahrzeuggeschwindigkeiten anzutreiben. Die zweite Geschwindigkeit ist geringer als die erste Geschwindigkeit. Der Getriebesatz ist ein Differentialgetriebemechanismus.

HYBRID-DRIVING ELECTRIC HYDRAULIC POWER-ASSISTED STEERING SYSTEM AND CONTROL METHOD THEREOF

A hybrid-driving electric hydraulic power-assisted steering system and a control method thereof. A main hydraulic unit and an auxiliary hydraulic unit are arranged in parallel between an oil storage tank and a power-assisted steering device of the steering system, and a tee joint is arranged between a main non-return valve of the main hydraulic unit and an auxiliary non-return valve of the auxiliary hydraulic unit. Two oil inlets of the tee joint are respectively connected to the main non-return valve and the auxiliary non-return valve, and an overflow valve is connected in series to an oil path between an oil outlet of the tee joint and an oil inlet of the power-assisted steering device. The main hydraulic unit further comprises a main controller for measuring an output flow of a main hydraulic pump, and the auxiliary hydraulic unit further comprises an auxiliary controller that is connected to the main controller and used for controlling an output flow of an auxiliary hydraulic pump.

Pumpenvorrichtung und zugehöriges Steuerungs-/Regelungsverfahren

Eine Pumpenvorrichtung umfasst ein Pumpengehäuse, eine Antriebswelle, einen im Pumpengehäuse beweglich angeordneten Nockenring, ein Pumpenelement, das im Nockenring angeordnet ist und von der Antriebswelle rotierend angetrieben wird, um eine spezifische Ausstoßmenge zu variieren, die eine Ausstoßmenge des Arbeitsöls pro einer Umdrehung des Pumpenelementes gemäß der Variation des exzentrischen Maßes des Nockenrings in Bezug auf die Antriebswelle darstellt, und ein Solenoid, das auf der Basis eines Lenkzustands und einer Fahrzeuggeschwindigkeit antriebsmäßig gesteuert/geregelt und betätigt wird, um das exzentrische Maß des Nockenrings zu steuern/zu regeln. Das Solenoid wird gesteuert/geregelt, um eine Steuerung/Regelung zur Reduzierung eines Durchsatzes während dem Anlassen eines Motors des Fahrzeugs auszuführen, wobei der Nockenring sich in eine solche Richtung bewegen kann, dass sich die spezifische Ausstoßmenge reduziert.

Method for managing faults in a magneto-rheological hydraulic power steering system

A system and method for managing faults occurring in a power steering system in a vehicle is disclosed that has particular application for an MRHPS system to provide reliable functioning of the power steering system. The method includes detecting a fault condition in the MRHPS system and selecting a safe mode from a plurality of predetermined safe modes based on the fault condition. The plurality of predetermined safe modes include a normal operation mode, an engine speed follow mode, a manual mode, a fixed duty cycle mode and a voltage control mode. If a fault condition is detected, the method applies the safe mode to manage the fault condition.

Variable displacement pump

A variable displacement pump includes a pumping part and a cam ring for supplying working fluid to a vehicle steering device. The cam ring is arranged radially outside of the pumping part, and configured to move along with a change in eccentricity of the cam ring, wherein the change in eccentricity causes a change in specific discharge rate. A solenoid is configured to control the eccentricity of the cam ring by being driven with an energizing current conformed to a control setpoint. A base setpoint is calculated based on steering angular speed and vehicle speed. The control setpoint is calculated based on the base setpoint and steering angular acceleration in a manner that the control setpoint increases more quickly than the base setpoint when the base setpoint increases in accordance with steering operation of the steering wheel.

HYDRAULIC SYSTEM

A hydraulic system for supplying fluid to an actuator comprising a variable speed prime mover drivingly coupled to a variable displacement hydraulic pump. The system is configured to deliver hydraulic fluid via fluid conduits to an actuator. It may deliver hydraulic fluid to an actuator at a first hydraulic pressure at a first rate of pressure rise; and at a second hydraulic pressure at a second rate of pressure rise. The first hydraulic pressure may be greater than the second hydraulic pressure; and the first hydraulic rate of pressure rise may be lower than the second hydraulic rate of pressure rise. 1. A hydraulic system for supplying fluid to an actuator , the system comprising:a variable speed prime mover drivingly coupled to a variable displacement hydraulic pump; at a first hydraulic pressure at a first rate of pressure rise; and', the first hydraulic pressure being greater than the second hydraulic pressure; and', 'the first hydraulic rate of pressure rise being lower than the second hydraulic rate of pressure rise., 'at a second hydraulic pressure at a second rate of pressure rise;'}], 'wherein the system is configured to deliver hydraulic fluid via fluid conduits to an actuator'}2. The hydraulic system of claim 1 , wherein the system is operable to deliver:a range of values of first hydraulic pressure and second hydraulic pressure, the range of values of the first hydraulic pressure being greater than the range of values of second hydraulic pressure; anda range of values of first hydraulic rate of pressure rise and second hydraulic rate of pressure rise, the range of values of the first hydraulic rate of pressure rise being lower than the range of values of the second hydraulic rate of pressure rise.3. The hydraulic system of claim 1 , wherein the variable displacement hydraulic pump has at least two ports claim 1 , each port for the delivery and receipt of fluid from fluid conduits.4. The hydraulic system of claim 1 , wherein the prime mover comprises an ...

METHOD AND CONTROL ARRANGEMENT FOR CONTROLLING VEHICLE FREEWHEEL WITH ENGINE OFF AND POWER STEERING

A method () and control arrangement () for controlling a vehicle () to freewheel with engine off. The vehicle () has an engine () for propelling the vehicle () and a hydraulic power steering system (). The hydraulic power steering system () comprises a primary power steering pump () arranged to be driven by the engine () and a secondary power steering pump (). The method () includes: determining () when to start freewheeling the vehicle () with its engine off; and prior to starting the freewheeling of the vehicle () with engine off, determining () to start the secondary power steering pump (). 1. A method for controlling a vehicle to freewheel with its engine off , whereinthe vehicle comprising an engine for propelling the vehicle and a hydraulic power steering system;the hydraulic power steering system comprises a primary power steering pump arranged to be driven by the engine and a secondary power steering pump which is not arranged to be driven by the engine; determining when to start freewheeling the vehicle with the engine off; and', 'prior to starting the freewheeling of the vehicle while the engine is off, determining to start the secondary power steering pump., 'the method comprises2. The method according to claim 1 , further comprising:determining if the secondary power steering pump is functioning to pump; andinhibiting start of freewheeling the vehicle with the engine off when it cannot be determined that the secondary power steering pump is functioning.3. The method according to claim 2 , wherein the determination if the secondary power steering pump is functioning comprises performing a diagnosis based on one or more of:measuring pressure and/or flow in the secondary power steering pump;checking that the secondary power steering pump is operating;checking whether a valve of the secondary power steering pump is closed/open;measuring that a clutch of the vehicle has been closed;measuring current/voltage to an electric machine.4. The method according to ...

INTEGRATED POWER STEERING SYSTEM FOR FRONT AND REAR WHEELS OF VEHICLE AND CONTROL METHOD THEREOF

A power steering system of a vehicle and a control method are provided. The integrated power steering system reduces the number of components, manufacturing costs, and power loss of a vehicle using components together, such as a hydraulic pump, a controller, and a control valve, used in an emergency steering system and a rear wheel steering system. The system includes a main hydraulic motor that receives engine power and generates a hydraulic pressure and an auxiliary hydraulic motor that generates a hydraulic pressure. A front wheel steering cylinder receives hydraulic pressure and generates power for steering front wheels and auxiliary steering of a driver and a rear wheel steering cylinder receives hydraulic pressure and generates power for steering rear wheels. An integrated control valve is connected to the hydraulic motors and the steering cylinders through hydraulic pressure pipelines, and adjusts the hydraulic pressure generated by a main hydraulic motor to supply the pressure to the front wheel steering cylinder and adjusts the hydraulic pressure generated by the auxiliary hydraulic motor to supply the pressure to the front wheel steering cylinder or the rear wheel steering cylinder. A controller operates the auxiliary hydraulic motor and the integrated control valve to supply the hydraulic pressure generated by the main hydraulic motor to the front wheel steering cylinder and the hydraulic pressure generated by the auxiliary hydraulic motor to the front wheel steering cylinder or the rear wheel steering cylinder when the steering wheel is manipulated. 1. An integrated power steering system for front and rear wheels of a vehicle , comprising:a main hydraulic motor configured to receive power of an engine to be driven, and generate a hydraulic pressure;an auxiliary hydraulic motor configured to generate a hydraulic pressure;a front wheel steering cylinder configured to receive hydraulic pressure and generate power for steering of front wheels and auxiliary ...

AIR INJECTION MACHINE WITH PNEUMATIC POWER STEERING

One example provides a ride on air injection machine including one or more steerable wheels, a compressed air system providing compressed air, one or more air inject tines to inject compressed air from the compressed air system into the grounds, and a steering system. The steering system includes a steering wheel, a cylinder coupled to the steerable wheels, the cylinder including opposing internal chambers and being moveable to steer the steerable wheels and a control valve assembly to direct compressed air from the compressed air system to the internal chambers and to bleed compressed air from the internal chambers based on a position of the steering wheel to move the cylinder steer the steerable wheels.

Machine and drivetrain associated with machine

A milling machine includes an engine that generates output power and a rotor that receives the output power from the engine. The milling machine further includes a drivetrain coupled with the engine and the rotor for transmitting the output power to the rotor based on a desired output of the rotor. The drivetrain includes a transmission system operatively coupled with the engine for varying an output of the rotor without altering a load on the engine. The transmission system includes a hydrostatic arrangement operatively coupled with the engine. The transmission system also includes a mechanical arrangement coupled with the engine and the rotor arrangement. The drivetrain also includes a power transmitting arrangement coupled with the transmission system. The drivetrain further includes a gearbox coupled to the power transmitting arrangement and the rotor, such that the power transmitting arrangement is disposed between the transmission system and the gearbox.

AUTOMOTIVE ACCESSORY DRIVE TRAIN

Methods and systems are provided for a vehicle adapted to be operated based on fuel combustion or electric power. In one example, an accessory train of the vehicle, including an air conditioning pump and a power steering pump, may be operated according to a first mode or according to a second mode based on a power system of the vehicle. When in the second mode, the vehicle may be instructed to coordinate operation of the air conditioning pump and the power steering pump. 1. A vehicle comprising;a frame;an accessory train installed within the frame, the accessory train including a belt driving a power steering pump and an air conditioning (AC) compressor; anda controller storing a first set of instructions and a second set of instructions in a memory of the controller, the first set of instructions executable to operate the accessory train when the controller detects an engine is installed in the frame, the second set of instructions executable to operate the accessory train when the controller detects a traction motor and not an engine is installed in the frame.2. The vehicle of claim 1 , wherein the first set of instructions is executable to operate the AC compressor independent of a power steering demand claim 1 , and wherein the second set of instructions is executable to operate the AC compressor based on the power steering demand.3. The vehicle of claim 2 , wherein the second set of instructions is executable to operate the accessory train by activating an electric motor coupled to the belt.4. The vehicle of claim 2 , wherein the second set of instructions is executable to:determine the power steering demand; andresponsive to a request to activate the AC compressor, engage the AC compressor to the belt only if the power steering demand is below a threshold, whereinthe accessory train includes one or more clutches to engage and disengage the AC compressor from the belt.5. The vehicle of claim 1 , wherein the vehicle includes the engine installed in the frame and ...

Pump System

A pump system includes a pump, a mounting bracket, and three fastener assemblies. The pump includes a housing having three pump attachment features. The mounting bracket includes three bracket attachment features. The three fastener assemblies are each coupled to one of the pump attachment features and to one of the bracket attachment features to form an attachment. Each of three extend through the pump attachment feature, the bracket attachment feature, and the fastener assembly at each attachment. The three attachment axes are perpendicular to each other.

ENGINE CONTROL DEVICE OF INDUSTRIAL VEHICLE

An engine control device for an industrial vehicle includes a seating detector configured to detect a seating state of a driver relative to a driver seat, a neutral detector configured to detect whether a direction operating member of the industrial vehicle is positioned in a neutral position, a fuel supply member configured to supply a fuel to the engine, a first controller configured to stop an output of a driving force from the engine when the seating detector detects that the driver is away from the driver seat, and a second controller configured to restart the output of the driving force from the engine in case that the seating detector detects that the driver is seated on the driver seat and the neutral detector detects that the direction operating member is positioned in the neutral position, after the first controller stops the output of the driving force from the engine. 1. An engine control device for an industrial vehicle in which a power-steering actuator is actuated by hydraulic oil from a hydraulic pump driven by an engine , the engine control device comprising:a seating detector configured to detect a seating state of a driver relative to a driver seat of the industrial vehicle;a neutral detector configured to detect whether a direction operating member of the industrial vehicle is positioned in a neutral position;a fuel supply member configured to supply a fuel to the engine,a first controller configured to stop an output of a driving force from the engine by controlling the fuel supply member so as to stop a supply of the fuel to the engine when the seating detector detects that the driver is away from the driver seat; anda second controller configured to restart the output of the driving force from the engine by controlling the fuel supply member so as to restart the supply of the fuel to the engine to cause the hydraulic pump to continue to supply hydraulic oil to the power-steering cylinder, in case that the seating detector detects that the ...

Power steering apparatus

An apparatus for use in turning steerable vehicle wheels includes a power steering motor assembly connected with the steerable vehicle wheels. A first pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine, to supply fluid under pressure to the power steering motor assembly. A second pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine. A valve connected with the power steering motor assembly and the second pump directs fluid flow from the second pump to at least one of the power steering motor assembly and reservoir during operation of both the first pump and the second pump. A pumping mechanism includes a first pumping area defining the first pump and a second pumping area defining the second pump. The first pumping area is smaller than the second pumping area.

TURNING SYSTEM

A turning system is configured to move a turning shaft to turn a left wheel and a right wheel of a vehicle. The turning shaft is configured to couple the left wheel and the right wheel to each other. A torsion bar is engaged with the turning shaft via a steering gear box. The turning system includes: a turning mechanism including (i) an electric turning mechanism including an electric motor configured to rotate a portion of the torsion bar which is located upstream of the steering gear box and (ii) a hydraulic turning mechanism configured to apply a moving force to the turning shaft in an axial direction, the moving force being produced by a hydraulic pressure; and an electric-motor controller configured to control the electric motor based on a frictional force in the turning mechanism and a road-surface reaction force that acts between (a) a tire on the left wheel and a tire on the right wheel and (b) a road surface. 1. A turning system configured to move a turning shaft to turn a left wheel and a right wheel of a vehicle , the turning shaft being configured to couple the left wheel and the right wheel to each other , a torsion bar being engaged with the turning shaft via a steering gear box , the turning system comprising:a turning mechanism comprising (i) an electric turning mechanism comprising an electric motor configured to rotate a portion of the torsion bar which is located upstream of the steering gear box and (ii) a hydraulic turning mechanism configured to apply a moving force to the turning shaft in an axial direction, the moving force being produced by a hydraulic pressure; andan electric-motor controller configured to control the electric motor based on a frictional force in the turning mechanism and a road-surface reaction force that acts between (a) a tire on the left wheel and a tire on the right wheel and (b) a road surface.2. The turning system according to claim 1 , wherein the electric-motor controller comprises a twist-angle obtainer configured ...

STEERING DEVICE, CONSTRUCTION MACHINE WITH A STEERING DEVICE AND METHOD FOR STEERING A STEERABLE MACHINE

The invention relates to a steering device for a steerable machine, particularly a construction machine, comprising a steering element for manual input of steering commands, a steering actuator for driving a steering adjustment of a travel unit of the construction machine, and a transmission device, which is arranged between the steering element and the steering actuator, the transmission device including an actuator orbitrol for driving the steering actuator. Furthermore, the invention relates to a construction machine having such a steering device, as well as to a method for steering a steerable machine, particularly a construction machine. 1. A steering device for a steerable machine , particularly a construction machine , comprising:a steering element for manual input of steering commands:a steering actuator for driving a steering adjustment of a steering apparatus of a travel unit of the construction machine; anda transmission device, which is arranged between the steering element and the steering actuator, the transmission device including an actuator orbitrol for driving the steering actuator, wherein an upstream orbitrol is provided, said upstream orbitrol being arranged between the steering element and the actuator orbitrol in such a way that, on the one hand, it is driven by the steering element and, on the other hand, it drives the actuator orbitrol.2. The steering device according to claim 1 , wherein a hydraulic motor claim 1 , which is connected to the upstream orbitrol via hydraulic lines and which has a movement transmission device on its output side towards the actuator orbitrol claim 1 , particularly a shaft or a gearbox claim 1 , is provided for driving the actuator orbitrol through the upstream orbitrol.3. The steering device according to claim 1 , wherein the upstream orbitrol is operatively connected with the actuator orbitrol via a closed hydraulic circuit.4. The steering device according to claim 3 , wherein a device for pressure pre- ...

REAR STEERING HYDRAULIC SYSTEM

A hydraulic system for controlling a pair of steerable caster wheels includes a left steering command valve, a right steering command valve, and a rear steering control valve. A supply pressure fluid circuit interconnects a pressure source and the rear steering control valve. A command valve supply fluid circuit interconnects the rear steering control valve with both the right steering command valve and the left steering command valve. A left side steering fluid circuit interconnects a left side actuator and the left steering command valve. A right side steering fluid circuit interconnects a right side actuator and the right steering command valve. A fluidic tie rod fluid circuit interconnects both the left side actuator and the right side actuator with the rear steering control valve. A tank return fluid circuit interconnects the rear steering control valve, the left and right steering command valves, and a tank. 1. A hydraulic system for controlling a pair of steerable caster wheels of an agricultural machine , the hydraulic system comprising:a pressure source configured to supply a flow of pressurized fluid;a tank configured to receive the fluid and supply the fluid to the pressure source;a left side actuator configured to control a left rear caster wheel;a right side actuator configured to control a right rear caster wheel;a left steering command valve, a right steering command valve, and a rear steering control valve;a supply pressure fluid circuit interconnecting the pressure source and the rear steering control valve in fluid communication;a command valve supply fluid circuit interconnecting the rear steering control valve with both the right steering command valve and the left steering command valve in fluid communication;a left side steering fluid circuit interconnecting the left side actuator and the left steering command valve in fluid communication;a right side steering fluid circuit interconnecting the right side actuator and the right steering command ...

Hydraulic drive system

A hydraulic drive system includes a pump, a steering actuator, a loading/unloading apparatus actuator, a drive device, a relief valve, and an input unit. The drive device: flows hydraulic oil from the pump to the loading/unloading apparatus actuator when an operating tool is operated; flows the hydraulic oil from the pump to the steering actuator when a steering has become an operated state from a non-operated state regardless of an operation of the operating tool; and causes the hydraulic oil from the pump to be discharged to a tank via the relief valve to increase the torque of an engine when an increase instruction is inputted to the input unit and the steering is in a non-operated state.

Electric vehicle and powertrain system thereof

A powertrain system includes an electric generator, a compressor, a water cooling module including a water pump, an electronic fan, a steering pump, a pneumatic module including an air pump, a transmission device, and an electric motor. The electric motor is configured to drive the electric generator, the compressor, the water pump, the electronic fan, the steering pump, and the air pump to work through the transmission device. The present invention further provides an electric vehicle with the powertrain system.

STEERING SYSTEM

A steering system installed on a vehicle, including: a steering mechanism including a steering member and configured to enable a wheel to be steered in accordance with a movement of the steering member; an operation assist device configured to apply a torque to a steering shaft for assisting an operation of a steering operation member; a steering assist device configured to assist the movement of the steering member utilizing a working fluid; and a controller configured to control a torque applied to the steering shaft by the operation assist device and control a supply flow rate of the working fluid, wherein the steering assist device assists the movement of the steering member with an assist force that depends on the supply flow rate, and the controller increases the supply flow rate when an operation speed of the steering operation member becomes equal to or higher than a set threshold speed. 1. A steering system installed on a vehicle , comprising:a steering operation member operated by a driver;a steering shaft coupled to the steering operation member and configured to rotate in accordance with an operation of the steering operation member;a steering mechanism including a steering member coupled to a wheel and configured to cause the steering member to move in accordance with rotation of the steering shaft so as to enable the wheel to be steered in accordance with a movement of the steering member;an operation assist device configured to apply a torque to the steering shaft so as to assist the operation of the steering operation member;a steering assist device including a working-fluid supply source for supplying a working fluid and a flow-rate adjusting mechanism configured to adjust a supply flow rate that is a flow rate of the working fluid supplied from the working-fluid supply source, the steering assist device being configured to assist the movement of the steering member of the steering mechanism utilizing the working fluid supplied from the working- ...

POWER STEERING APPARATUS

An apparatus for use in turning steerable vehicle wheels includes first and second pumps driven by a vehicle engine to supply fluid under pressure to a power steering motor assembly connected with the vehicle wheels. The first pump is sized to provide a fluid flow required by the power steering motor assembly to effect a first vehicle maneuver when the engine speed is at or above a first predetermined speed. A valve directs fluid flow from the second pump to the power steering motor assembly, which when combined with the fluid flow of the first pump is sufficient for the power steering assembly to effect a second vehicle maneuver when the engine speed is at or above the first predetermined speed. A greater fluid flow is required to effect the second vehicle maneuver than to effect the first vehicle maneuver. 1. An apparatus for use in turning steerable wheels of a vehicle , said apparatus comprising:a power steering motor assembly connected with the steerable vehicle wheels, the power steering motor assembly including a steering control valve and a power steering motor, the steering control valve moving in response to rotation of an input shaft to control fluid flow to and from a first chamber and a second chamber of the power steering motor so as to move a piston of the power steering motor, the steering control valve in response to rotation of the input shaft directing fluid from a fluid inlet of the steering control valve to one of the first and second chambers and away from the other of the first and second chambers;a first pump connected in fluid communication with the fluid inlet of the steering control valve and driven by an engine of the vehicle, during operation of the engine, to supply fluid under pressure to the fluid inlet of the steering control valve, the first pump being sized so as to provide a fluid flow required by the power steering motor assembly to effect a first vehicle maneuver when the engine is operating at a speed at or above a first ...

WORK VEHICLE

A work vehicle includes a steering wheel, a steering cylinder, a steering valve, a feed line, a return line, an electromagnetic valve, and a controller. The steering valve is configured to supply hydraulic fluid to the steering cylinder in response to steering of the steering wheel. The feed line is configured to feed the hydraulic fluid from the steering valve to the steering cylinder. The return line is configured to return the hydraulic fluid from the steering cylinder to the steering valve. The electromagnetic valve is disposed between the feed line and the return line. The controller opens the electromagnetic valve in response to an oil pressure in the feed line. 1. A work vehicle comprising:a steering wheel;a steering cylinder;a steering valve configured to supply hydraulic fluid to the steering cylinder in response to steering of the steering wheel;a feed line configured to feed the hydraulic fluid from the steering valve to the steering cylinder;a return line configured to return the hydraulic fluid from the steering cylinder to the steering valve;an electromagnetic valve disposed between the feed line and the return line; anda controller configured to open the electromagnetic valve in response to an oil pressure in the feed line.2. The work vehicle according to claim 1 , further comprising:a steering angle sensor configured to detect a steering angle of the steering wheel,the controller being further configured to sense the oil pressure in the feed line based on a variation of the steering angle detected by the steering angle sensor.3. The work vehicle according to claim 1 , further comprising:an oil pressure sensor configured to detect the oil pressure in the feed line,the controller being further configured to sense the oil pressure in the feed line based on a variation of the oil pressure detected by the oil pressure sensor.4. The work vehicle according to claim 1 , further comprising:a steering angle sensor configured to detect a steering angle of the ...

Differential Steering Control Vehicle, System and Method

A method of differentially steering a hydraulically driven vehicle includes measuring left and right swash plate angles of pumps which drive left and right wheels of the vehicle and if the angles are different from one another and the larger swash plate angle is equal to or exceeds a threshold value then reducing the larger swash plate angle. If the larger swash plate angle is between the threshold value and a lower limit, or below the lower limit the swash plate angle is increased. Control systems and vehicles include swash plate angle sensors and actuators in communication with a controller which effects the steering control method. 1. A method of steering a vehicle having at least a left wheel and a right wheel oppositely disposed , torque being applied to said left wheel by a left hydraulic pump having a left swash plate , torque being applied to said right wheel by a right hydraulic pump having a right swash plate , said method comprising:measuring a left swash plate angle of said left swash plate;measuring a right swash plate angle of said right swash plate;comparing said left swash plate angle to said right swash plate angle;comparing said left swash plate angle to a left angle threshold if said left swash plate angle is greater than said right swash plate angle;comparing said right swash plate angle to a right angle threshold if said right swash plate angle is greater than said left swash plate angle;reducing said left swash plate angle if said left swash plate angle is equal to or greater than said left angle threshold;reducing said right swash plate angle if said right swash plate angle is equal to or greater than said right angle threshold; andrepeating said measuring, comparing and reducing steps.2. The method according to claim 1 , further comprising:reducing said right swash plate angle when reducing said left swash plate angle; andreducing said left swash plate angle when reducing said right swash plate angle.3. The method according to claim 1 , ...

Shortining structure for pipe route of power steering system

PURPOSE: A structure for shortening the pipe route of a power steering system is provided to shorten an oil pipe by installing a cooling unit in the rear side of an engine room. CONSTITUTION: Pipe route reducing structure of a power steering system consists of an engine(11) in an engine room(10); an oil pump(12) in the engine room; an oil tank(15) in the engine room; a gearbox(13) in the lower end of a steering wheel; and a cooling unit(20) installed in the sub-frame of a front wheel. When the oil pump is driven by the drive of the engine, oil is boosted and entered into the gearbox through an oil pipe(16). When the steering wheel is steered, an oil temperature in the gearbox is increased and entered into the cooling unit through the oil pipe. The cooling unit comprises a cooling fin on the outer circumference of the oil pipe and a duct in the front portion of the oil pipe with an extended end portion. Then, oil is cooled in the cooling unit and entered into the oil tank through the oil pipe. The oil tank feeds oil to the oil pump.

turning stablity system for automotive vehicles

본 발명은 자동차의 선회 안정화 시스템에 관한 것으로, 조타시 소정의 유압을 발생시켜 이를 통해 조향에 조력을 부여하는 유압식 조향장치와 일반적인 형태의 현가장치 사이를 상호 유기적으로 연동시키는 구조를 채택함으로써, 비교적 간단한 구성을 통해 전자제어식 현가장치에서 구현할 수 있는 선회시 롤각 제어와 같은 기능을 발휘할 수 있도록 하는 데 그 목적이 있다. 전술한 목적을 달성하기 위해 본 발명은, 엔진과 연동되어 소정의 유압을 발생시키는 유압 펌프와; 상기 유압 펌프에서 발생된 유압을 조타시 작동 실린더의 좌/우측 압력실중 어느 한 군데로 공급되도록 유압의 전달 경로를 조절하는 컨트롤 밸브; 조타시 상기 유압 펌프에서 발생된 유압을 작동 실린더의 좌/우측 압력실중 어느 한 군데로 공급되도록 유압의 전달 경로를 조절하는 컨트롤 밸브; 상기 컨트롤 밸브와 상기 작동 실린더의 좌/우측 압력실 사이로 각각 배설된 유압 관로; 상기 유압 관로로부터 각각 분기되어 좌/우측 쇽 업소버로 연장된 보조 유압관로 및; 상기 보조 유압관로와 연통되어 공급되는 유압에 따라 상기 쇽 업소버의 감쇠 특성을 조절하는 감쇠력 조절기구를 포함하여 구성되는 것을 특징으로 한다.

Power steering pump and power steering line for automobiles

본 발명은 자동차용 파워스티어링 라인과 파워스티어링 펌프에 관한 것으로, 종래에는 파워스티어링 라인을 I커넥터와 I볼트를 이용하여 파워스티어링 펌프의 연결포트에 연결시키는 과정에서 상기 파워스티어링 라인의 설치경로가 쉽게 변경됨에 따라 파워스티어링 라인과 파워스티어링 펌프의 연결작업이 용이하지 못하고, 작업시간이 오래 걸리는 문제점이 있었다. The present invention relates to a power steering line and a power steering pump for an automobile, and in the related art, an installation path of the power steering line is easily installed in the process of connecting the power steering line to the connection port of the power steering pump using an I connector and an I bolt. As the power steering line and the power steering pump are not easily connected, the work takes a long time. 따라서 본 발명은 I커넥터(200)가 연결된 파워스티어링 라인(100)과, 연결포트(410)가 구비된 파워스티어링 펌프(400)가 상기 I커넥터(200)를 관통하여 연결포트(410)와 나사결합되는 I볼트(300)에 의해 서로 결합되도록 한 것에 있어서, 상기 I커넥터(200)의 일측에 사각형상의 고정부(230)를 돌출시켜 형성하고, 상기 연결포트(410)의 내부에는 상기 고정부(230)가 끼워져 회전되지 않도록 사각형상의 고정홈(430)을 형성하므로서, 상기 파워스티어링 라인(100)과 파워스티어링 펌프(400)가 연결될 때 I커넥터(200)와 함께 파워스티어링 라인(100)이 유동 및 회전되어 파워스티어링 라인(100)의 설치경로가 변경되던 문제점을 효과적으로 해결할 수 있도록 한 것이다. Therefore, in the present invention, the power steering line 100 connected to the I connector 200 and the power steering pump 400 having the connection port 410 penetrate the I connector 200 to connect the connection port 410 and the screw. In order to be coupled to each other by the I bolt 300 is coupled, it is formed by protruding the rectangular fixing portion 230 on one side of the I connector 200, the fixing portion inside the connection port 410 When the power steering line 100 and the power steering pump 400 are connected, the power steering line 100 together with the I connector 200 is formed by forming the rectangular fixing groove 430 so that the 230 is not inserted and rotated. Flow and rotation to effectively solve the problem that the installation path of the power steering line 100 is changed. 파워스티어링 라인, 파워스티어링 펌프, I커넥터, I볼트, 설치경로 Power Steering Line, Power Steering Pump, I Connector, I Bolt, Installation Path

Power transmitting system for 4wheel drive systems

본 발명은 유압식 4WD 시스템의 동력전달장치(10)에 관한 것이다. 유압식 4WD 시스템의 동력전달장치(10)는, 실린더(44); 상기 실린더(44)의 내부에 배설되면서 마주보는 단부에는 스플라인(30)이 형성되는 제1샤프트(26)와 제2샤프트(28); 상기 제1샤프트(26)와 제2샤프트(28)를 사이에 배설되면서 유체의 이동에 따라 상기 제1샤프트(26)와 제2샤프트(28)가 스플라인결합될 수 있는 스플라인 홈이 형성되는 피스톤(42); 상기 피스톤(42)을 일방향으로 압압하기 위한 탄성부재(32); 유압호스를 경유하여 상기 실린더(44)와 연결되면서 제1밸브(20)와 제2밸브(22)가 설치되는 리저버(18); 상기 리저버(18)에 제공되는 제1밸브(20)와 제2밸브(22)의 개폐를 제어하기 위한 절환 스위치(16); 및 상기 리저버(18)에 연결되는 유압펌프(14); 를 구비한다. The present invention relates to a power train 10 of a hydraulic 4WD system. The power transmission device 10 of the hydraulic 4WD system includes a cylinder 44; A first shaft 26 and a second shaft 28 having a spline 30 formed at ends facing the inside of the cylinder 44; Piston which is formed between the first shaft 26 and the second shaft 28, the spline groove that can be splined to the first shaft 26 and the second shaft 28 in accordance with the movement of the fluid (42); An elastic member 32 for pressing the piston 42 in one direction; A reservoir 18 connected to the cylinder 44 via a hydraulic hose and having a first valve 20 and a second valve 22 installed therein; A switching switch (16) for controlling the opening and closing of the first valve (20) and the second valve (22) provided to the reservoir (18); And a hydraulic pump 14 connected to the reservoir 18. It is provided.

Working truck

本发明提供一种作业车辆。轮式装载机(1)具有：方向盘(8)、左转向缸(4a)、转向阀(12)、左管路(13)、右管路(14)、电磁阀(16a)、以及控制装置(17)。电磁阀(16a)配置在左管路(13)与右管路(14)之间。控制装置(17)根据左管路(13)的液压急剧上升，使电磁阀(16a)开放。

Oil pump install for steering system

요약없음

Connector of fluid-flow control valve for power steering oil pump

A connector of a control valve for a power steering oil pump is provided to regulate a sudden change in discharging oil by preventing the introduced oil from being vibrated using a blocking wall. A connector(17) of a control valve for a power steering oil pump comprises a housing formed with an inlet path(12) and a return path(13), respectively, a spool(14) installed in a chamber(11) of the housing, a needle(16), and a blocking wall(17c) integrally formed at the front end of the connector while extending in a longitudinal direction of the connector. The spool controls a fluid introduced through the inlet path and discharges the fluid through the return path. The connector wall is positioned around an end of the spool where the needle is inserted to prevent an oil pressure in the inlet path from being directly applied to the spool.

Pressure switch for pressure pump of power steeringsystem

본 발명은 파워스티어링 펌프에 장착되는 압력스위치에 관한 것으로서, 유압펌프의 본체 일측에 펌프 내부와 압력 포트로 이어진 공간부가 형성되고, 상기 공간부에는 유압의 크기에 따라 유동하는 플런저와, 상기 플런저에 의해 온/오프되는 스위치 기구와, 상기 플런저를 지지하는 스프링이 장착되는 파워스티어링장치의 유압펌프용 압력스위치에 있어서 상기 스위치 기구를 구성하는 터미널 단자의 하부 일측으로 가변저항이 연결장착되고 상기 플런저의 상부 일측에는 접점을 형성하며, 유압펌프 내부의 압력의 크기에 따라 상기 플런저가 상승시 상기 접점도 슬라이딩 운동하며 상기 가변저항에 인가된 접점 위치가 변하게 되고, 전자제어장치에 보내지는 전류신호가 변화되면서 엔진의 회전수가 가변 제어되어 유압펌프의 내부 압력을 제어할 수 있도록 한 것을 특징으로 한다. The present invention relates to a pressure switch mounted on a power steering pump, wherein a space portion connected to the inside of the pump and a pressure port is formed at one side of the main body of the hydraulic pump, and the space portion includes a plunger flowing according to the size of the hydraulic pressure, and the plunger. In a pressure switch for a hydraulic pump of a power steering apparatus equipped with a switch mechanism turned on / off by a spring and a spring for supporting the plunger, a variable resistor is connected and mounted to one lower side of a terminal terminal constituting the switch mechanism. On the upper side, a contact is formed, and when the plunger rises, the contact also slides and the contact position applied to the variable resistor changes according to the magnitude of the pressure inside the hydraulic pump, and the current signal sent to the electronic controller changes. As the rotation speed of the engine is variably controlled, the internal pressure of the hydraulic pump can be controlled. It is characterized by that. 본 발명에 따르면, 펌프 내부의 압력이 높아질 때 엔진의 회전수를 펌프 내부 압력의 크기에 따라 가변적으로 제어할 수 있어 불필요한 엔진 회전수 상승에 따른 차량 소음, 진동 향상 및 불필요한 연료 소모량을 줄일 수 있는 효과가 있다. According to the present invention, when the pressure inside the pump is increased, the engine speed can be variably controlled according to the magnitude of the internal pressure of the pump, thereby reducing vehicle noise, vibration improvement and unnecessary fuel consumption due to unnecessary engine speed increase. It works. 압력스위치, 본체, 공간부, 플런저, 스위치 기구, 스프링, ...

Oil pump of steering apparatus

본 발명은 오일펌프의 구동축에 전달되는 회전속도를 주행속도에 따라 변속함으로써 저속주행상태에는 토출압력을 높이고 고속주행상태에서는 토출압력을 낮출수 있는 조향장치의 오일펌프에 관한 것으로서, 1단 기어와 2단 기어로 이루어진 다단계 기어와; 상기 다단계 기어와 맞물려 동력을 오일펌프에 전달하는 구동 기어와; 상기 구동 기어에 전달되는 기어비를 변경시키기 위해 설치되는 클러치와; 차량의 주행속도를 측정하기 위해 설치된 차속센서와; 주행속도에 따라 상기 클러치를 제어하기 위해 설치된 제어부로 구성된다. The present invention relates to an oil pump of a steering apparatus capable of increasing the discharge pressure in a low speed driving state and decreasing the discharge pressure in a high speed driving state by changing the rotational speed transmitted to the driving shaft of the oil pump according to the driving speed. A multi-stage gear consisting of two gears; A drive gear meshed with the multi-stage gear to transfer power to an oil pump; A clutch installed to change a gear ratio transmitted to the drive gear; A vehicle speed sensor installed to measure a traveling speed of the vehicle; It is composed of a control unit installed to control the clutch in accordance with the traveling speed. 본 발명에 의하면, 저속주행에서는 조향핸들을 가볍게 하고, 중속주행에서는 조향핸들을 무겁게 하여 주행 안정성을 향상시킬 뿐 아니라, 고속회전시 불필요한 부하를 줄임으로써 연비를 향상시킬 수 있는 효과를 갖는다. According to the present invention, the steering wheel is lighter in low speed driving and the steering wheel is heavy in medium speed driving, thereby improving driving stability and improving fuel efficiency by reducing unnecessary load during high speed rotation. 동력조향장치, 오일펌프, 다단계 기어 Power Steering, Oil Pump, Multi-Stage Gear

A oil pressure control type power steering oil pump

본 발명은 자동차 엔진의 회전수가 높은 경우에 오일펌프에 의한 엔진의 부하를 저감시켜 엔진의 출력을 향상시킬 수 있도록 한 것으로서, The present invention is to reduce the load of the engine by the oil pump when the rotational speed of the automobile engine is high, and to improve the output of the engine, 오일펌프의 펌프바디(1) 일측에 설치되며 내부로 드라이프샤프트(3)의 일단이 돌출되어 감싸지도록 형성된 컨트롤룸(5)과, 상기 컨트롤룸(5)측으로 돌출된 드라이브샤프트(5)의 단부에 그 축방향으로 길게 형성된 숫기어(7)와, 상기 숫기어(7)의 이끝원보다 큰 이끝원을 가지는 암기어(9)가 상기 드라이브샤프트(3)의 축방향으로 길게 형성되고 상기 컨트롤룸(5)에 베어링(11)으로 지지된 상태에서 엔진의 크랭크축에 벨트로 연결되는 조절풀리(13)와, 상기 컨트롤룸(5)에 채워져 상기 암기어(9)의 회전력을 상기 숫기어(7)로 전달하는 작동유체(15)와, 엔진의 회전속도를 측정하는 엔진속도센서(17)와, 상기 엔진속도센서(17)의 신호에 따라 상기 드라이브샤프트(3)를 축방향으로 이동시켜 상기 암기어(9)와 숫기어(7)의 상대적인 위치를 변화시키는 샤프트슬라이딩수단으로 구성된 유압제어식 파워스티어링 오일펌프를 제공하여, The control room 5 is installed at one side of the pump body 1 of the oil pump and is formed so that one end of the driving shaft 3 protrudes and is wrapped therein, and the drive shaft 5 protruding toward the control room 5 side. A male gear 7 formed at an end thereof in the axial direction and a female gear 9 having a tip end larger than the tip end of the male gear 7 are formed long in the axial direction of the drive shaft 3 and the An adjustment pulley 13 connected to the crankshaft of the engine with a belt while being supported by a bearing 11 in the control room 5 and the control room 5 are filled with the rotational force of the arm gear 9. The drive shaft 3 in the axial direction in accordance with the operating fluid 15 to be transmitted to the gear 7, the engine speed sensor 17 for measuring the rotational speed of the engine, and the signal of the engine speed sensor 17 Number of shaft slidings that move to change the relative positions of the female gear 9 and the male gear 7 By providing a controlled hydraulic power steering oil pump configured to, 오일펌프가 엔진의 회전수 변화에 무관하게 항상 적절한 파워스티어링 오일의 유압을 형성할 수 있도록 하여 엔진의 고속 작동시에는 필요한 파워스티어링 오일압의 형성에 필요한 회전력만이 전달되도록 하고, 여분의 엔진동력은 불필요하게 소모되지 않도록 하여 엔진의 출력을 높이도록 한다. The oil pump can always generate the proper ...

Hydraulic clutch of power steering pump

본 발명은 자동차의 파워 스티어링 펌프용 유압 클러치에 관한 것이다. 본 발명은 고속시에 파워 스티어링 펌프가 작동되지 않게 하므로서 불필요한 엔진 마력손실을 방지하기 위하여, 펌프 하우징(1)내에 펌프 출구와 연결되는 유로(2)와 압력실(3)을 형성하고; 이 압력실(3) 내에 풀리(4)와 연결되고, 단부에 스플라인(5)이 형성된 구동축(6)과, 임펠러가 축설치되고, 단부에 스플라인(5')이 형성된 피동축(7)을 이격되게 일직선 상으로 설치하며; 상기 구동축(6)과 상기 피동축(7)의 단부에는 유로(2)측 오일압력에 따라 축방향으로 이동 가능하게 스플라인결합되고 오일압력을 받는 압력판(8)이 형성된 연결기어(9)를 설치하고; 상기 오일압력에 반력을 작용하는 스프링(10)을 상기 압력판(8)의 일측에 설치한 것이다.

Novel variable power-assisted hydraulic steering system

本发明涉及一种新型可变助力液压转向系统，包括液压回路及转向控制器，液压回路包括转向泵、液压式动力转向器、限压阀、转向助力缸、差动器及比例流量阀，转向泵与发动机连接，比例流量阀与液压式动力转向器并联形成回路，再与转向控制器连接，受转向控制器控制，差动器与液压式动力转向器串联接入液压网络中，本申请采用差动器保证了油泵排量减小的情况下而不影响车辆转向的轻便性，进而达到降低液压助力转向系统能量损失的目的同步也解决了液压系统发热问题；采用比例流量阀，调节液压助力转向系统的流量，实现变助力转向的目的，提高了车辆转向的操作性。

Power steering pump

본 발명은 구동토크 저감 및 에너지 소모를 줄여 연비를 향상하고, 릴리프 작동시 소음을 저감하기 위한 것이다. 이를 위해, 본 발명은, 엔진의 회전력을 전달받는 구동축이 내설된 펌프 하우징과; 상기 펌프 하우징의 내부 동축상에 위치되어 중심부에 캠홀을 형성하는 캠링과; 상기 캠홀과 접동하는 베인이 외주면상에 방사상으로 출몰 가능하게 설치되고, 상기 캠링의 캠홀에 내입되어 구동축에 연동되게 설치되는 로터와; 상기 캠링 및 상기 로터의 일측벽을 가압하는 사이드 플레이트와; 상기 베인의 배압측 상기 사이드 플레이트에 삽입 고정되고, 외주면에 내측과 외측을 연통시키는 가이드홀이 형성된 가이드와; 상기 가이드의 외주면에 축방향을 따라 슬라이드 이동 가능하게 설치되어, 상기 가이드홀을 개폐하는 콘밸브와; 상기 가이드의 외주면에 설치되어 상기 콘밸브를 탄력 지지하는 스프링;을 포함하는 파워 스티어링 펌프를 제공한다. 파워 스티어링 펌프, 펌프 하우징, 캠링, 로터, 베인, 사이드 플레이트, 가 이드, 가이드홀, 콘밸브, 스프링

Drive train for a compressor and a hydraulic pump

本发明涉及一种用于汽车的压缩机(12)和液压泵(24)的传动链，该汽车具有一个液压伺服转向器(14)以及一个电的叠加转向器(36)用以支持转向。其中压缩机和液压泵通过汽车驱动发动机(16)的一根共同的输出轴(30)驱动。按本发明设有器件(10、20)，所述的器件降低通过输出轴输出到压缩机和液压泵上的功率，如果对压缩机和转向支持器的需求允许这一点的话，并且所述器件把通过输出轴输出到压缩机和液压泵上的功率降低到零，如果压缩机的运行是不需要的并且电的叠加转向器可以单独施加必需的转向支持的话。此外本发明涉及一种用于驱动汽车的压缩机和液压泵的方法，该汽车具有一个液压伺服转向器以及一个电的叠加转向器用以支持转向。

Skid steered all terrain vehicle

一种滑动转向全地形车(ATV)，电括用于位于车辆两侧的车轮或履带的两个驱动单元和具有差速齿轮的差速转向装置，其中，所述全地形车是轻型全地形车(LATV)，并且其中，差速转向装置设计成产生与转向装置的转向角度有关而与车辆行驶于其上的表面条件无关的、车辆的两个驱动单元的限定的差速，由此，附加转向驱动作用于差速齿轮上。

Emergency steering pump control method, device and equipment and readable storage medium

本发明提供一种应急转向泵控制方法、装置、设备及可读存储介质。该方法包括：将车速与预设车速进行比较，其中，预设车速大于零；若车速小于或等于预设车速，则根据点火开关状态控制应急转向泵处于待机或停止状态。通过本发明，将车速与预设车速进行比较，若车速小于或等于预设车速，则控制应急转向泵处于待机或停止状态，使得应急转向泵不会出现当车速大于零就持续运转的情况，解决了现有技术中只要车速大于零，车辆应急转向泵就持续运转，导致车辆动力转向系统的能量消耗较大，车辆应急转向泵的工作寿命降低的问题。

Drive train for a compressor and a hydraulic pump

Die Erfindung betrifft einen Antriebsstrang (30) für einen Kompressor (12) und eine Hydraulikpumpe (24) eines Kraftfahrzeuges, das zur Lenkunterstützung eine hydraulische Servolenkung (14) sowie eine elektrische Überlagerungslenkung (36) aufweist, wobei der Kompressor (12) und die Hydraulikpumpe (24) über eine gemeinsame Abtriebswelle (30) eines Kraftfahrzeugantriebsmotors (16) angetrieben werden. Erfindungsgemäß sind Mittel (10, 20) vorgesehen, welche die über die Abtriebswelle (30) an den Kompressor (12) und die Hydraulikpumpe (24) abgegebene Leistung verringern, wenn die Anforderungen an den Kompressor (12) und an die Lenkunterstützung (36) dies erlauben. DOLLAR A Die Erfindung betrifft weiterhin ein Verfahren zum Antreiben eines Kompressors und einer Hydraulikpumpe eines Kraftfahrzeuges, das zur Lenkunterstützung eine hydraulische Servolenkung sowie eine elektrische Überlagerungslenkung aufweist. The invention relates to a drive train (30) for a compressor (12) and a hydraulic pump (24) of a motor vehicle having a hydraulic power steering (14) and an electrical superposition steering (36) for steering assistance, wherein the compressor (12) and the hydraulic pump (24) via a common output shaft (30) of a motor vehicle drive motor (16) are driven. According to the invention, means (10, 20) are provided which reduce the power delivered via the output shaft (30) to the compressor (12) and the hydraulic pump (24) when the requirements for the compressor (12) and the steering assistance (36) allow this. DOLLAR A The invention further relates to a method for driving a compressor and a hydraulic pump of a motor vehicle having a hydraulic power steering and an electrical superposition steering for steering assistance.

The steering control system and autocrane of crane

本发明公开了一种起重机的转向控制方法及汽车起重机，该转向控制系统包括下车发动机、转向泵和下车液压油箱、上车发动机、上车液压泵和上车液压油箱，转向泵由下车发动机驱动，上车液压泵由上车发动机驱动，与转向泵和与上车液压泵均连通的转向器，以及与上车发动机和下车发动机均电连接的车辆控制器，车辆控制器用于控制下车发动机驱动转向泵向转向器泵送液压油或者控制上车发动机驱动上车液压泵向转向器泵送液压油。由于起重机转向动力来源为下车发动机或上车发动机，使车辆行驶中发生下车发动机、转向泵或下车液压油箱等故障时仍能利用上车发动机和上车液压油箱提供动力和油源以应急转向，同时起重机的应急转向不受车速及复杂传动链的影响。

A kind of steering and emergency system

本发明的目的是提供一种转向及应急系统，车辆正常行驶时，由第一转向泵作为车辆转向系统的动力源，保障车辆转向系统的正常工作，整车控制器与转向系统控制器通讯，第二转向泵不工作；当主传动油路回路或第一转向泵本身发生故障，导致正常行驶用的转向泵无动力输出或输出动力不足时，主油路的压力下降，油压传感器感应到，此时通过转向系统内部的主油路压力信号反馈到转向系统控制器，转向系统控制器控制电动机带动第二转向泵工作，并通过第二二位三通阀将动力接入到转向系统回路中，从而保证整车转向系统的正常运行，可以广泛应用于现有市场车型，对电动车尤为适用。

Loader hydraulic steering system and loader

本公开提供一种装载机液压转向系统及装载机，包括转向油缸、驱动油路和调整油路，所述驱动油路接入转向油缸，驱动转向油缸伸缩用于带动外部设备转向；所述调整油路包括蓄能器、单向阀和顺序阀，所述转向油缸通过油管依次连通单向阀、顺序阀后接入油箱，所述驱动油路通过油管连通蓄能器后接入单向阀，用于控制单向阀的启闭；通过配置调整油路，将车架机构运动惯量产生的油缸高压迅速释放，并延时关闭高压的顺序阀，弥补了转向器节流槽难以优化的问题，从而保证了高压的快速释放，达到削弱车架回摆问题的效果。

Improved power assisted steering system with an auxiliary electric pump

A power assist steering system for a vehicle, especially for a truck or commercial vehicle, is disclosed that includes a mechanical engine-driven power steering pump that pumps hydraulic fluid to a power steering unit, and an electrical pump adapted to pump hydraulic fluid so as to optimize a power steering flow to the power steering unit and to minimize internal pump flow.

Power train of hydraulic 4WD system

본 발명은 유압식 4WD 시스템의 동력전달장치(10)에 관한 것이다. 유압식 4WD 시스템의 동력전달장치(10)는, 실린더(44); 상기 실린더(44)의 내부에 배설되면서 마주보는 단부에는 스플라인(30)이 형성되는 제1샤프트(26)와 제2샤프트(28); 상기 제1샤프트(26)와 제2샤프트(28)를 사이에 배설되면서 유체의 이동에 따라 상기 제1샤프트(26)와 제2샤프트(28)가 스플라인결합될 수 있는 스플라인 홈이 형성되는 피스톤(42); 상기 피스톤(42)을 일방향으로 압압하기 위한 탄성부재(32); 유압호스를 경유하여 상기 실린더(44)와 연결되면서 제1밸브(20)와 제2밸브(22)가 설치되는 리저버(18); 상기 리저버(18)에 제공되는 제1밸브(20)와 제2밸브(22)의 개폐를 제어하기 위한 절환 스위치(16); 및 상기 리저버(18)에 연결되는 유압펌프(14); 를 구비한다.

System with a compressor and with a consumer in a motor vehicle

The invention relates to a system with a compressor (16) and with a consumer (20) which are coupled to a drivetrain (14, 18) and which extract energy from the latter. It is provided according to the invention that the consumer (20) is suitable for varying an absorption of power, which is made available to it by the drivetrain (14, 18), as a function of a power which is required for compressor operation and which is supplied from the drivetrain (14, 18) to the compressor (16). The invention also relates to a pump which has at least one pump chamber (24) which generates a pumping power during pumping operation. It is provided according to the invention that the pump additionally has at least one pump chamber (22) which generates no pumping power or a reduced pumping power during pumping operation.

Power assisted steering system for a motor vehicle, with hydraulic open center

Fuel efficient hydraulic power steering

A hydraulic power steering system that maintains proportional pressure control between an input side of a gear and assist pressures internal to the steering gear by relying upon a control valve. A pressure differential is maintained between the input side of a gear and assist pressures internal to the steering gear throughout certain events. Those events include running the pump to fully charge the accumulator, idling the pump after fully charging the accumulator, discharging pressure from the fully charged accumulator at an onset of a steering event having a demand for steering load, recovering the discharged pressure of the accumulator by running the pump after turning on the pump at the onset of the steering event, and opening the relief valve in the valve manifold during the steering event.

Oil pump of steering apparatus

본 발명은 오일펌프의 구동축에 전달되는 회전속도를 주행속도에 따라 변속함으로써 저속주행상태에는 토출압력을 높이고 고속주행상태에서는 토출압력을 낮출수 있는 조향장치의 오일펌프에 관한 것으로서, 1단 기어와 2단 기어로 이루어진 다단계 기어와; 상기 다단계 기어와 맞물려 동력을 오일펌프에 전달하는 구동 기어와; 상기 구동 기어에 전달되는 기어비를 변경시키기 위해 설치되는 클러치와; 차량의 주행속도를 측정하기 위해 설치된 차속센서와; 주행속도에 따라 상기 클러치를 제어하기 위해 설치된 제어부로 구성된다. 본 발명에 의하면, 저속주행에서는 조향핸들을 가볍게 하고, 중속주행에서는 조향핸들을 무겁게 하여 주행 안정성을 향상시킬 뿐 아니라, 고속회전시 불필요한 부하를 줄임으로써 연비를 향상시킬 수 있는 효과를 갖는다.

Variable power steering system

PURPOSE: A variable power steering system is provided to make steering force variable according to speed of a vehicle and to reduce power loss of a pump and fuel consumption ratio of an engine by controlling torque to be transferred to an oil pump. CONSTITUTION: A variable power steering system includes an oil pump(10) making hydraulic pressure by taking driving force from an engine(20), a gearbox(14) distributing hydraulic pressure from the oil pump at a control valve formed within, an operating cylinder(16) by operating of an inner flow check piston supplied with hydraulic pressure distributed, and a driving force variable transferring device transferring power of the engine and oil pump to make the driving force variable according to speed of a vehicle. The driving force variable transferring device makes rotational driving force of the engine transferred in inverse proportion to speed of the engine. The driving force variable transferring shaft can vary hydraulic pressure and therefore the steering force is changeable.

Skid steered all terrain vehicle

A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear.

Power steering device

Eine Vorrichtung zur Verwendung beim Verschwenken lenkbarer Fahrzeugräder, wobei die Vorrichtung Folgendes aufweist: eine Servolenkmotoranordnung, die mit den lenkbaren Fahrzeugrädern verbunden ist; eine erste Pumpe, die mit der Servolenkmotoranordnung verbunden ist und von einem Motor des Fahrzeugs angetrieben wird, um Strömungsmittel unter Druck an die Servolenkmotoranordnung zu liefern; eine zweite Pumpe, die mit der Servolenkmotoranordnung verbunden ist; einen Elektromotor, der mit der zweiten Pumpe verbunden ist und betätigbar ist, um die zweite Pumpe anzutreiben, um Strömungsmittel unter Druck an die Servolenkmotoranordnung zu liefern; und eine Steuervorrichtung, die mit dem Elektromotor verbunden ist, um den Betrieb des Elektromotors zu bewirken, um die zweite Pumpe anzutreiben, wenn die Servolenkmotoranordnung Strömungsmittel zusätzlich zu dem Strömungsmittel benötigt, das von der ersten Pumpe geliefert wird.

Process to operate an automotive hydraulic pump driving a power steering assembly via gear with high ratio and low ratio

In an automotive process to operate a power steering pump assembly, power is taken from a two-stage gear with a high and a low ratio, power is only taken from the high-speed gear if there is a commensurate high demand from the servo-pump.

Hydraulic power steering

A hydraulic power steering system for a vehicle includes a first, hydraulic actuator for making available steering power or auxiliary steering power for adjusting the steering angle of one or more steered wheels of the vehicle, and with a second electric actuator for making available a steering power or auxiliary steering power for adjusting the steering angle of the steered wheel. For a power steering system, for which the power dissipated is reduced and the operating temperature lowered, the first hydraulic actuator can be taken out of operation while the vehicle is being driven as a function of the trip and/or vehicle parameters.

Powertrain for compressors and hydraulic pumps

Power steering pump for motor vehicle has pump mounted in or on housing for vehicle CVT drive transmission

The power steering pump for a motor vehicle has a rotationally driven group (32) with fluid chambers. The pump (13) is mounted in or on the casing (1) of the vehicle drive transmission, such as a CVT drive. The pump can have a flow regulating valve and a pressure limiting valve (34). The pump can be driven directly or indirectly from the transmission input shaft (3). The pump can use the same oil source as the transmission.

Power-assisted steering system and mobile inspection device

Variable displacement pump

A variable displacement pump for a power steering is provided to change the location of a cam ring according to car speed by additionally mounting a gear and a motor structure in the structure moving the cam ring of a pump. A variable displacement pump for a power steering comprises; a gear(42) formed with one side circumference part of a cam ring(40); a mounting space formed in one side of a housing(20) corresponding to the outer circumference of the cam ring; and an actuating unit(60) installed at THE mounting space. According to the velocity of the car, the actuating unit rotates the cam ring. The actuating unit comprises: a motor(62) operating with the signal sent as the electronic control unit; and a gear(64) which rotates the cam ring with engaging with the cam ring.

Heating system for vehicle

(57)【要約】 【課題】 簡単な構成で、制御性に優れるとともに、車 両への搭載性に優れ、コスト低減が可能な車両用暖房装 置を提供することを目的とする。 【解決手段】 車両エンジン１により駆動される油圧ポ ンプ２を備えたパワステアリング装置に、油圧ポンプ２ の吐出圧力を制御する圧力弁３１と、作動油と熱交換を 行う熱交換器４１を組み込む。油圧ポンプ２の吐出圧力 が必要な熱量に応じた目標圧力となるように制御装置３ ２によって圧力弁３１を駆動すると、目標圧力に応じた 熱量が作動油に与えられて温度上昇する。これにより高 温となった作動油を熱交換器４１でエンジン冷却水と熱 交換させることで、車室内の暖房に必要な熱量が、制御 性よく得られる。

Permanent magnet rotating speed difference clutch and self-adaption nonsingular terminal slip form rotating speed control method thereof

本发明公开了一种永磁转差离合器及其自适应非奇异终端滑模转速控制方法，包括如下：(1)将永磁转差离合器的外转子与发动机连接，内转子与转向泵连接，构成永磁转差离合器式电控液压助力转向系统；(2)建立永磁转差离合器数学模型，包括电压方程、电磁转矩方程和运动方程；(3)根据数学模型，采用自适应非奇异终端滑模控制方法，设计非奇异终端滑模面，推导控制律，利用李亚普诺夫稳定性理论设计参数不确定因素的自适应律，保证该控制系统的稳定性。本发明利用自适应非奇异终端滑模控制方法，克服了系统参数摄动和外界干扰不确定性问题，减少抖振，具有很强的鲁棒性，实现对永磁转差离合器输出转速的精确控制，保证跟踪误差快速收敛到零。

A kind of steering boost system and vehicle-mounted inspection equipment

本发明提供一种转向助力系统及车载检查设备，通过设置换向阀、第二液压泵和第一驱动电机，在中心控制器判断出当前底盘发动机未启动时，根据接收到的行车指令控制第一驱动电机启动，以使第一驱动电机驱动第二液压泵，用以通过第二液压泵的第二油路驱动转向助力电机，在车载检查设备处于工作状态、底盘发动机不启动时驱动转向助力系统工作，从而实现不借助底盘发动机驱动转向助力系统，可轻易操纵方向盘以控制行车方向，提高车载检查设备的转向助力系统使用的灵活性和便捷性。

Steering assist system

Oil Pump Pulley of Automotive Power Steering System

본 고안은 자동차동력조향장치의 오일펌프풀리에 관한 것으로서; 엔진에 장착되는 오일펌프(1)의 하우징(2) 단부에 내방 샤프트와 함께 회동하도록 고정된 풀리(3)가 외방부에 V 벨트홈(3')을 가지는 자동차동력조향장치의 오일펌프풀리에 있어서; 상기 풀리(3)의 디스크평면부(10)에 풀리(3)의 두께(G) 방향으로 만곡한 팬곡면(S)을 가지고 수렴되는 중앙부에 샤프트장착공허브(40)을 가지는 다수개의 방출팬부(11)와 방출팬부(11) 사이의 방출개구(12) 및 상기 방출팬부(11)를 벨트홈(3')이 그 외주연에 구성되는 풀리아우터레이서(20)와의 연결하는 연결리브(30)로서 구성되는 강제냉각수단을 구비하는 것을 특징으로 하여; 본 고안의 자동차동력조향장치의 오일펌프풀리는 종래의 풀리구성에 자체적으로 공기유동을 야기하는 방출팬부를 다수개 구비함으로서 오일펌프측으로의 공기의 유동을 원활하게 하여 외방의 공기유동과는 별도로 강제냉각을 도모함으로서 엔진으로부터 전도되는 전도열 및 오일펌프 자체적인 발열을 용이하게 방산하는 것을 목적으로 한다.

Power steering pump

본 발명은 동력조향장치의 유압펌프에 관한 것으로, 특히 펌프보디에 삽입 설치되어 엔진의 구동력을 전달받아 회전되는 펌프축과, 상기 펌프보디와 펌프축 사이에 설치되어 상기 펌프축의 회전을 지지하는 보디부쉬(Body bush)와, 상기 펌프축과 보디부쉬 사이의 접촉면적을 축소시킴으로써 펌프축에 대한 상기 보디부쉬의 마찰저항을 감소시켜 상기 펌프축의 회전저항을 감소시키는 마찰저항 저감수단을 포함하여 구성된 동력조향장치의 유압펌프를 제공함으로써, 펌프의 구동마력이 저감되어 차량의 연비가 개선되도록 한 것이다. The present invention relates to a hydraulic pump of a power steering apparatus, and in particular, a pump shaft inserted into a pump body and rotated by receiving a driving force of an engine, and a body installed between the pump body and the pump shaft to support rotation of the pump shaft. And a frictional resistance reduction means for reducing the frictional resistance of the body bush to the pump shaft by reducing the contact area between the body bush and the pump shaft and the body bush. By providing a hydraulic pump of the steering device, the driving horsepower of the pump is reduced to improve the fuel economy of the vehicle. 동력조향장치, 유압펌프, 펌프축, 보디부쉬, 홈 Power Steering, Hydraulic Pump, Pump Shaft, Body Bush, Groove

Hydraulic drive device

油压驱动装置（1）具备泵（11）、转向用执行器（16）、装卸装置用执行器（17、18）、驱动设备（15）、泄压阀（36）和输入部（24）；驱动设备（15）形成为如下结构：在操作件（32、33）被操作时，使来自于泵（11）的工作油流入装卸装置用执行器（17、18）中；在转向盘（31）从非操作状态变为操作状态时，与操作件（32、33）的操作无关地使工作油从泵（11）流入转向用执行器（16）中；在上升指令被输入至输入部（24）中、且转向盘（31）处于非操作状态时，使来自于泵（11）的工作油通过泄压阀（36）排出至罐（12）中而提高发动机（E）的转矩。

Improved oil pump in power steering system

본 고안은 차량의 주행 속도에 관계없이 항상 일정한 유압을 발생시켜 속도와 무관하게 조종 안정성을 갖도록 하는 파워 스티어링 시스템의 개선된 오일 펌프에 관한 것으로서, 엔진의 회전시 발생하는 동력을 이용하여 유압을 발생시키는 파워 스티어링 시스템의 오일 펌프에 있어서, 오일 펌프(10)의 압력판(11)의 후면에 스프링(12)을 부착하고, 엔진의 속도에 따라 동작하는 솔레노이드(13)를 스프링(12)의 단부에 부착하여 구성되는 것을 특징으로 한다. The present invention relates to an improved oil pump of a power steering system that generates a constant hydraulic pressure regardless of the driving speed of the vehicle so that it has a steering stability regardless of the speed, and generates hydraulic pressure using the power generated when the engine rotates. In the oil pump of the power steering system, the spring 12 is attached to the rear surface of the pressure plate 11 of the oil pump 10, and the solenoid 13 operating according to the engine speed is attached to the end of the spring 12. It is characterized by being configured to attach.

Durability improvement structure of the oil pump for an automobile power steering

본 발명은 자동차의 동력조향용 오일펌프의 내구력향상구조에 관한 것으로, 오일펌프내에 배설되어 구동되도록 된 드라이브샤프트(2)의 중간부위에는 니들베어링(8)이 배설됨과 더불어 상기 드라이브샤프트(2)의 끝단에는 외주면에 오일유로가 형성된 부시(6)가 배설되어져, 상기 드라이브샤프트(2)의 회전지지력이 니들베어링(8)에 의해 분산지지되므로 볼베어링(4)의 수명이 향상되어 오일펌프의 구동시 소음발생이 방지될 뿐만 아니라 오일이 오일유로를 통해 상기 드라이브샤프트(2)의 끝단에 접촉되므로 고속회전시 마찰열에 의한 부시(4)의 고착현상을 방지하게 되어 오일펌프의 수명 및 내구성이 증진되도록 된 것이다. The present invention relates to a durability improvement structure of an oil pump for power steering of an automobile, wherein a needle bearing (8) is disposed at an intermediate portion of a drive shaft (2) disposed and driven in an oil pump, and the drive shaft (2). At the end of the bush (6) having an oil flow path formed on the outer circumferential surface, the rotational bearing force of the drive shaft (2) is distributed and supported by the needle bearing (8), so the life of the ball bearing (4) is improved to drive the oil pump Not only noise is prevented when the oil is in contact with the end of the drive shaft (2) through the oil flow path to prevent the seizure of the bush (4) due to frictional heat during high-speed rotation to improve the life and durability of the oil pump It is possible.

Steering system

A steering system installed on a vehicle, including: a steering mechanism including a steering member and configured to enable a wheel to be steered in accordance with a movement of the steering member; an operation assist device configured to apply a torque to a steering shaft for assisting an operation of a steering operation member; a steering assist device configured to assist the movement of the steering member utilizing a working fluid; and a controller configured to control a torque applied to the steering shaft by the operation assist device and control a supply flow rate of the working fluid, wherein the steering assist device assists the movement of the steering member with an assist force that depends on the supply flow rate, and the controller increases the supply flow rate when an operation speed of the steering operation member becomes equal to or higher than a set threshold speed.

A kind of hybrid power truck steering boost system, control system and method

本发明公开了一种混合动力卡车转向助力系统，包括油壶、油管、转向助力装置、双向单通阀和转向器；所述转向助力装置包括电动助力泵和动力转向泵；所述油壶、所述电动助力泵、所述双向单通阀、所述转向器通过油管依次相连成回路，构成第一液压助力机构；所述油壶、所述动力转向泵、所述双向单通阀、所述转向器通过油管依次相连成回路，构成第二液压助力机构。本发明还公开了该混合动力卡车转向助力系统的控制系统、方法，对第一液压助力机构和第二液压助力机构进行控制。本发明相对于现有技术，混合动力卡车在燃油驱动、混合动力驱动、纯电驱动模式下的转向助力系统都能持续稳定运行，提高了转向助力系统的灵活性、可靠性和行车安全性。

Working vehicle

A wheel loader (1) is provided with a steering wheel (8), a left steering cylinder (4a), a steering valve (12), a left line (13), a right line (14), a solenoid valve (16a), and a controller (17). The solenoid valve (16a) is disposed between the left line (13) and the right line (14). The controller (17) opens the solenoid valve (16a) in response to a sharp increase in hydraulic pressure in the left line (13).

Oil pump mounting structure of automobile power steering system

Mini-forwarder of half crawler type

본 발명은 산림 지역에서 목재운반과 사방사업, 임도사업과 같은 산림작업에 사용되는 다기능의 반궤도식 작업차에 관한 것이다. 본 발명은 주행부에는 4륜으로 구동되는 전방 바퀴와 후륜 크롤러(crawler)를 갖추고, 적재부에는 원목을 집어서 적재 및 상하차하는 굴절식 크레인(log grapple), 운반물을 쉽게 하차시키는 덤프 실린더, 먼 거리의 임목집재와 차량을 쉽게 견인하는 윈치, 차체의 안전성을 확보하기 위한 아우트리거들을 구비하고, 동력부에는 이들 장비들을 구동하는 엔진 및 유압 펌프들을 일체로 구비하여 험준한 급경사 산악지형에서 이동하기 용이하고, 다양한 산림작업에 유용하게 활용할 수 있는 구조이다. 본 발명에 의하면 산림작업에서의 작업의 안전성 및 노동생산성 향상과 생산비용의 절감, 노동력 부족과 고령화에 대응하고, 3D산업인 임업의 노동조건 개선 등을 이룰 수 있는 우수한 효과가 얻어진다. 목재운반, 사방사업, 임도사업, 반궤도식 작업차, 후륜 크롤러(crawler) The present invention relates to a multi-functional semi-track truck for use in forest work such as timber transportation, all-round business, forestry business in the forest area. The present invention is equipped with a front wheel and a rear wheel crawler (drive wheel) driven by four wheels on the driving portion, a log grapple (load grapple) to load and unload the wood, the dump cylinder for easy loading and unloading Easily to move in the rugged steep mountainous terrain with wood chippings on the street, winches to easily tow the vehicle, and outriggers to ensure the safety of the vehicle body, and the power unit is integrally equipped with the engine and hydraulic pumps driving these equipment. It is a structure that can be usefully used for various forest work. According to the present invention, an excellent effect of improving the safety and labor productivity of the forest work, reducing the production cost, coping with labor shortage and aging, and improving the working conditions of the forestry, which is a 3D industry, can be achieved. Timber transportation, all-round business, forestry business, semi-tracked truck, rear crawler

A kind of 4X4 mechanical electronic hydraulic all-wheel steering device

本发明提供了一种4X4机电液全轮转向系统，所述系统包括方向盘及转向器总成、前桥转向油罐总成、前桥转向泵、后桥转向油罐总成、前桥转向杆系、后桥转向液压缸总成、转向回位锁止机构总成、后桥转向集成阀组、全轮转向控制器总成、后桥转向杆系、后桥电动转向泵总成，方向盘及转向器总成与前桥转向杆系连接。本发明开发了全新的机电液转向系统，该结构的全轮转向系统能够进行三种模式之间的方便切换，能够实现转向液压缸与方向盘操纵的闭环控制及转向桥无源主动回正与刚性锁紧装置的解、闭锁控制诸多优点，另外前后桥液压源独立，系统安全可靠。

Special vehicle

本发明提供了一种特种车辆，包括车架、驱动车桥、行走轮、后桥转向以及动力系统。驱动车桥包括设置在车架下方的驱动桥壳、安装支架以及安装于安装支架处的液压马达；行走轮安装于驱动桥壳的端部，并与液压马达连接，进而接受驱动而转动；后桥转向设置于车架的后部；动力系统包括发动机、液压主泵、装配支架以及传动泵；发动机具有两并联设置的输出轴，输出轴绕其自身轴线旋转；液压主泵位于发动机的其中一侧，连接发动机的其中一输出轴和液压马达，从而驱动液压马达；装配支架与液压主泵位于发动机的同侧，并与液压主泵之间具有高度差；传动泵安装于装配支架处；传动泵与发动机的另一输出轴连接，从而驱动后桥转向。

Improved power assisted steering system with an auxiliary electric pump

Power steering system using exhaust gas pressure

본 발명은 배기가스 압력을 이용한 파워스티어링 시스템에 관한 것으로, 터보차저(12)의 회전축(13)을 공유하여 작동되는 진공펌프(10)가 구비되고, 이 진공펌프(10)와 파워실린더(1)의 좌/우측챔버(A,B)와 진공파이프(14)로 연결되며, 상기 좌/우측챔버(A,B)가 대기연결파이프(15)를 매개로 대기와 연결되는 한편, 각 챔버와 연결된 파이프들에는 제 1,2,3,4솔레노이드밸브(S1,S2,S3,S4)들이 설치되어 있다. 따라서, 조향감지센서(18)에서 전달되는 스티어링휠(17) 조작 방향에 따라 전자제어유니트(16)가 상기 제 1,2,3,4솔레노이드밸브(S1,S2,S3,S4)들을 제어하여 좌/우측챔버(A,B)에 조건에 맞도록 진공압과 대기압을 형성시켜 줌으로써 이들의 압력관계에 의하여 랙바(2)가 위치를 유지하거나 좌우방향으로 이동하여 조향이 이루어지도록 되어 있다. 이와 같이, 배기가스의 압력을 이용하여 정상적인 파워스티어링 작용이 이루어지게 됨으로써 파워스티어링 시스템 작동에 엔진의 구동력이 사용되지 않게 되어 엔진 구동력 손실이 발생하지 않게 되고, 이에 따라 엔진의 연비가 향상되는 효과가 있다.

Power steering system

A power steering system for a vehicle includes a hydraulic pump connected to a power steering gear of the vehicle and a fluid coupling interconnecting a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input and an amplifier to receive the variable control signal and energize the fluid coupling in response thereto to vary torque transmitted via the fluid coupling.

Electric vehicle and powertrain system thereof

A powertrain system includes an electric generator, a compressor, a water cooling module including a water pump, an electronic fan, a steering pump, a pneumatic module including an air pump, a transmission device, and an electric motor. The electric motor is configured to drive the electric generator, the compressor, the water pump, the electronic fan, the steering pump, and the air pump to work through the transmission device. The present invention further provides an electric vehicle with the powertrain system.

Patent JPH0529586B2

Hydraulic servo-steering for motor vehicles

The disclosed servo-steering specially intended to heavy motor-vehicles is supplied with oil under pressure by a pump with constant volume and depending on the operating conditions (emergency pump (4) for steering) and by a pump (3) with variable volume and depending on the engine. Both pumps discharge into a common conduit (10) connected to a steering valve (1). In the neutral position of the steering valve (1) the control section of the control angles (12, 13) is dimensioned so that the emergency pump (4) generates a pilot volume which maintains in neutral position the moving member of the pump (3). In running conditions and when the wheels are laterally deviated in a normal working zone, the output of the emergency pump (4) towards the servo-steering is enough so that the pump (3) remains in its neutral position. When a large volume of oil is required for example to take narrow curves at low speeds, the resulting decrease of the pressure difference between the conduit (10) and the steering conduit (26) brings the moving member of the pump (3) to a pumping position. The pump (3) is thus used to complete the oil flow rate. When the pressure difference increases again, it is applied through a control conduit (28) from a distribution valve (27) and the steering conduit (26) to the moving member of the pump (3). The moving member of the pump (3) therefore returns to its neutral position.

Barkward flow prevention device of inlet hose for power steering system

PURPOSE: A back flow preventing device of a power steering system is provided to smoothly flow operating oil even if an oil pump is installed higher than an oil storage tank by being mounted between the oil pump and the oil storage tank and then the durability of the oil pump is enhanced. CONSTITUTION: A fuel feeding system of a power steering system allows an operating oil to flow into an oil pump from an oil storage tank through a suction hose(23) formed between the oil pump and the oil storage tank. A back flow prevention device(24) for the suction hose consists of a communicating pipe(25) near the oil pump; a reduction pipe(26) extended from the communicating pipe with many through holes on the outer circumference; and a cover pipe(28) elastically supporting a coil spring(27) on the outer circumference of the reduction pipe. Thus, the back flow prevention device prevents the oil pump from being damaged.

Power steering system

A power steering system for a vehicle includes a hydraulic pump interconnected with a power steering gear and a fluid coupling that operatively connects a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input to vary torque transmitted via the fluid coupling. The fluid coupling includes a coil operatively connected with the electronic controller and a magnetically permeable core disposed about the coil.

ASSISTED DIRECTION SYSTEM AND MOBILE INSPECTION DEVICE

a presente invenção refere-se a um sistema de direção assistida e um dispositivo de inspeção móvel. a presente revelação fornece uma válvula de controle direcional, uma segunda bomba hidráulica e um primeiro motor de acionamento. ao determinar que um mecanismo motor em chassi não foi iniciado, uma unidade de controle central controla o início do primeiro motor de acionamento de acordo com uma instrução de percurso recebida de modo que o primeiro motor de acionamento acione a segunda bomba hidráulica e, então, o motor de direção assistida possa ser acionado através de uma segunda passagem de óleo da segunda bomba hidráulica. consequentemente, o sistema de direção assistida pode ser acionado para operar quando o dispositivo de inspeção móvel estiver em operação e o mecanismo motor em chassi não for iniciado, assim, é possível acionar o sistema de direção assistida sem o mecanismo motor em chassi. além disso, é fácil manipular uma roda de direção para controlar uma direção de percurso, assim, é possível aperfeiçoar a flexibilidade operacional e a adaptabilidade do sistema de direção assistida do dispositivo de inspeção móvel. The present invention relates to a power steering system and a mobile inspection device. The present disclosure provides a directional control valve, a second hydraulic pump and a first drive motor. In determining that a chassis engine mechanism has not been started, a central control unit controls the start of the first drive motor in accordance with a received travel instruction so that the first drive motor drives the second hydraulic pump and then the power steering motor can be driven through a second oil pass of the second hydraulic pump. consequently, the power steering system can be driven to operate when the mobile inspection device is in operation and the chassis drive mechanism is not started, so the power steering system can be operated without the chassis drive mechanism. In addition, it is easy to manipulate a steering wheel to ...

A steering pump structure of power steering apparatus for a vehicle

본 발명은 차량용 파워 스티어링 장치의 스티어링 펌프 구조에 관한 것으로, 중앙부에 엔진으로부터 동력을 전달받아 회동하는 구동축이 구비된 펌프 하우징과; 상기 펌프 하우징내에 동축상으로 설치되며 중심부에 캠홀이 형성된 펌프링과; 상기 펌프링의 캠홀 내주면에 상기 캠홀과 접동되는 베인이 방사상으로 출몰 가능하게 설치되고, 상기 캠홀에 내입되어 구동축에 연동되게 설치되는 로터와; 상기 펌프링 및 로터를 가압하도록 설치되는 압력 플레이트와; 상기 베인이 회전됨에 따라 인테이크 호스를 통해 토출되는 오일의 유량을 조절하는 밸브보어가 구비된 유량조절밸브를 포함하는 차량용 파워 스티어링 장치의 스티어링 펌프 구조에 있어서, 상기 펌프 하우징의 후방측에 결합되어 그 내부에 압력조절부를 형성하는 압력 플레이트 커버와, 상기 펌프 하우징과 압력 플레이트 커버의 내부에 구비되어 상기 로터의 일측에 상기 구동축과 연동하는 추력 플레이트와, 상기 추력 플레이트와 압력 플레이트 커버 사이에 구비되는 추력 플레이트 지지 스프링을 포함하는 것을 특징으로 한다.

Steering Boost System

A hydraulic steering assistance system for vehicles, including a power steering pump and a variable-ratio gear, particularly a booster drive for the power-steering pump wherein the power steering pump hydraulically powers both the hydraulic steering assistance system and the variable-ratio gear.

Automotive hydraulic power steering device

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。

Power steering system having a variable-ratio drive mechanism for a vehicle

A power steering system for translating movement to a pair of wheels of a vehicle having an engine is disclosed. The system includes a steering assembly adapted for coupling engagement to the wheels for turning the wheels. The system includes a hydraulic pump having a pump input and a pump output and is coupled to the steering assembly and a planetary gear set. The system also includes a steering shaft operatively connected to the hydraulic pump for controlling a direction of the pump output and coupled to the steering assembly. The system further includes a variable-ratio drive mechanism having an electric motor and a controller. The electric motor is coupled to the planetary gear set and the controller communicates with the electric motor for controlling a rotational speed of the planetary gear set to maintain the pump output.