Detecting the individual cylinder operating strokes in a four-stroke engine

SENSOR

VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG DES KLOPFENS EINER BRENNKRAFTMASCHINE

Cylinder head for piston compressor - has internal ducts for liq. coolant running around outlet valve

The cylinder head of a piston compressor, partic for the compressed air installation of a motor vehicle, contains ducts and recesses for the air intake, for the liquid coolant, and for the compressed air, the latter containing an outlet valve. The coolant ducts (26-33) are so arranged that the coolant is made to flow around the outlet valve. This valve may have a tongue portion which is secured by one side, with the securing point for this blade valve located in the cooling circuit. The cooling ducting (26-33) around the valve may extend over more than 360 deg. and pass through more than one level inside the cylinder head.

Two part stepped compressor piston - has top and bottom parts connected by bolts, with centering and lubricating system included

The stepped piston for a compressor is made in two parts connected by bolts (20). The upper part (1) has the larger diameter and has clearance holes (18) for the bolts. The heads of the bolts fit in recesses in the top without projecting. The lower parts of the bolts screw into blind holes in the bottom part (2). The bottom of the upper part has a bored recess (3) into which the top (4) of the bottom part fits for accurate centering. A seal (3') is provided between the abutting faces. Both parts incorporate oil channels (19, 16, 17) which also include the clearance hole (18) in the top part to allow lubricant to flow from outside the top to a bearing (6) inside the bottom.

Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine

The proposal is for a process and device for controlling an internal combustion engine in which a lean fuel-air mixture is supplied in at least a first operating range. When the driver requires more power, e.g. in non-idling operation or in the neighbourhood of full-load running, a stoichiometric mixture is supplied, in which, during the transition, the change in torque owing to the change in the fuel-air mixture is substantially offset by a corresponding adjustment of the air supply to the internal combustion engine.

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINER BRENNKRAFTMASCHINE

Pressure control for air compressor - has inlet line contg. two-position valve pilot operated to close via receiver pressure operated valve

The compressed air installation comprises an air compressor (1) connected to a storage vessel. A pressure-operated valve (4) has a throttle bypass (5) in the inlet line (2',2) to control the compressor output as a function of the air demand. A pressure-operated valve (8) controls the pilot pressure to the valve (4), a safety and idling vent valve (9) also being provided. The valve is of two-position type, pilot-operated to close by pressure at the storage vessel admitted via the valve (8). This is itself pilot-operated to open by the storage vessel pressure when that pressure exceeds a given level.

Process and device for controlling IC engine

METHOD AND DEVICE FOR DETECTING THE END OF THE STARTING OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE

Process and device for the detection of the working time of a four-stroke engine

... a) L'invention concerne un procédé et un dispositif pour la détection du temps de travail d'un moteur à quatre temps. b) L'invention est caractérisée par le fait que: - les signaux sont enregistrés par les capteurs et mis en mémoire dès que sont délivrés les signaux d'angle de vilebrequin par le transmetteur d'angle de vilebrequin (14), - on détermine celui des cylindres pour lequel les signaux de capteur indiquent un passage par un maximum de pression, et dispositif pour la mise en ùoeuvre du procédé par le fait qu'un dispositif (11) de détection de temps de travail, qui est conçu de telle façon qu'il enregistre les signaux des capteurs (S1-S6) et les met en mémoire, dès que le transmetteur d'angle de vilebrequin (14) fournit les signaux d'angle de vilebrequin. c) L'invention s'applique aux moteurs à combustion interne à quatre temps.

SENSOR

Verfahren und Vorrichtung zur Detektion der Beendigung eines Startvorgangs bei einer Brennkraftmaschine eines Kraftfahrzeugs

Es werden ein Verfahren und eine Vorrichtung zur Detektion der Beendigung eines Startvorgangs bei einer Brennkraftmaschine (1) eines Kraftfahrzeugs vorgeschlagen, die eine Unterscheidung des Startvorgangs von einem eingeschwungenen Zustand der Brennkraftmaschine (1) auch bei Startern mit hoher Starterdrehzahl ermöglicht. Dabei wird mindestens eine Betriebsgröße der Brennkraftmaschine (1) ermittelt, die von der Drehzahl der Brennkraftmaschine (1) verschieden ist. Die mindestens eine Betriebsgröße wird mit einem vorgegebenen Schwellwert verglichen. Bei Erreichen oder Überschreiten des Schwellwertes durch die mindestens eine Betriebsgröße wird die Beendigung des Startvorgangs detektiert. The invention relates to a method and a device for detecting the completion of a starting process in an internal combustion engine (1) of a motor vehicle, which enables the starting process to be distinguished from a steady state of the internal combustion engine (1) even for starters with a high starter speed. At least one operating variable of the internal combustion engine (1) is determined, which is different from the speed of the internal combustion engine (1). The at least one operating variable is compared with a predetermined threshold value. When the threshold value is reached or exceeded by the at least one operating variable, the end of the starting process is detected.

Verfahren zur Regelung einer Brennkraftmaschine mit Erfassung des Verlaufs der Lichtintensität

Method for load sensing on an internal combustion engine

Detection method for end of starting operation for vehicle engine by comparing operating variable to pre-given threshold, detecting end of operation start when operating variable reaches or exceeds threshold value

An operating variable of the engine other than the engine rotation speed is determined. The operating variable is compared to a pre-given threshold. The end of the operation start is detected when the operating variable reaches or exceeds the threshold value. An Independent claim is also included for arrangement detection for end of a starting operation of an internal combustion engine of the motor vehicle.

PROCESS AND DEVICE FOR RECOGNIZING KNOCKING IN A COMBUSTION MACHINE

Device for load sensing on an internal combustion engine

In an arrangement for sensing the load on an internal combustion engine in which the cylinder pressure in at least one cylinder is determined using a pressure sensor, the load is then determined either from the difference dp between pressure values at two different angles x1, x2 of the crankshaft or the difference between two different integral values I1, I2 of the pressure signal during the compression and intake phases. A further possibility is to determine the load from a weighted sum of pressure measurements. Corrections may also be applied e.g. for gas temperature and volume, and the result used in a controller having a stored characteristic map to control ignition and fuel injection. ...

Sensor

A sensor for detecting physical processes in the combustion chamber of an internal combustion engine is proposed, wherein at least one fibre-optic guide is provided which faces the combustion chamber and is arranged in a screwed housing preferably of the spark plug type and which is designed as a quartz glass rod (12) fitted on the combustion chamber side. A light-transmitting body (14) of high temperature-resistant material, preferably crystalline alpha -alumina, is placed in front of the quartz glass rod (12). ...

Valve plate for reciprocating air compressor - has recesses completing cooling water channels in cylinder head above valve plate

The compressor has a cylinder containing a reciprocating piston and closed by a cylinder head. The cylinder head has passages for air inlet and discharge and cooling water flow and seats on a valve plate (12) between itself and the cylinder. The valve plate has openings which accommodate the suction and discharge valve discs. It has recesses (7', 11'9') on its upper surface which match the cooling water passages (7, 11, 9) in the cylinder head. These passages are open at the bottom and are closed by the valve plate. The recesses in the plate increase the surface area of the cooling water passages and thus improve cooling in a convenient and compact manner.

Detecting the individual cylinder operating strokes in a four-stroke engine

PURPOSE: To make it simple to ascertain the operating strokes of a cylinder by storing a crankshaft angle signal as soon as it is delivered at the start of an engine and judging a cylinder is in its expansion stoke when the detected pressure for the cylinder indicating passage through a pressure maximum is above a threshold level. CONSTITUTION: In a six-cylinder four-stroke engine 10, a signal from a crankshaft angle sensor 14 is outputted to an operating stroke detecting device 11 and a crankshaft angle calculating device 12, and a mark signal is outputted to a control device 13 for every 360 deg. of the crankshaft angle. The combustion chamber pressure of each cylinder is detected by pressure sensors S1-S6. Respective output signal is inputted to the operating stroke detecting device 11. In the operating stroke detecting device 11, each pressure sensor signal is stored as soon as the signal from the crankshaft angle sensor 14 is outputted at the start of an engine. A cylinder is judged ...

VERFAHREN UND VORRICHTUNG ZUR REGELUNG DES EINER BRENNKRAFTMASCHINE ZUZUFUEHRENDEN KRAFTSTOFFLUFTGEMISCHS

Correcting position of top dead centre reference marker in IC engine - using pressure variation measurement relating to crankshaft angle without combustion operation at different positions of marker and calculating pressure differences.

The variation in the pressure in the combustion chamber of an engine cylinder is measured depending on the crankshaft angle and during non-combustion operation. The pressure variation is stored and related to a stored reflective marker. Difference pressure values are determined for various marker positions and are compared to determine the smallest difference from null. This corresp. to the top dead centre point of the marker which is used to correct the reference marker position. USE/ADVANTAGE - Pref. for correcting top dead centre reference markers in internal combustion engines. Very accurate reference marker positions can be achieved with less accurate transducer discs.

Air compressor system with piston driven by crankshaft - has central oil storage bore lubricating shaft bearing via radial ducts in shaft

The piston compressor is particularly intended for the air brake system of a motor vehicle. It comprises a crank shaft (7) having a crank pin (6) in the crank case (5) of the compressor housing (1) to drive (8) the piston (3). The crank shaft is carried in a bearing (15) in the housing, and there is a crank pin bearing (10) in the connecting rod (8). The crankshaft has a central bore (27) for the oil supply which bore is connected by at least one radial duct (29, 30) to at least one bearing lubrication point (31, 32). The oil may be supplied to the bore (29) via a radial duct (25) in the bearing housing and a further radial duct (26) in the crank shaft. The crank pin bearing may be lubricated via a duct (33) connecting with the central bore (27).

RUECKSCHLAGVENTIL

Method for the control of an internal combustion engine with sensing of the light-intensity gradient

A method for controlling an internal combustion engine (30) with sensing (31) of the light-intensity gradient by way of the combustion process is proposed, uneven, non-knocking combustion being sensed (36) and, derived from this, at least one control variable being formed relating to the control (35, 38) of the internal combustion engine. Defective effects of irregular combustion for example on a knocking control system of the internal combustion engine are thereby eliminated. <IMAGE>

Determining working stroke in four stroke IC engine - using crank angle and cylinder pressure sensors for signalling monitor unit and referencing engine controller

Apparatus for ascertaining the operating strokes of the cylinders of a four-stroke engine (10) has: - a crankshaft angle transducer (14); - sensors (S1-6) on cylinders (Z1-6) for outputting respective signals indicative of cylinder pressure; and - an operating stroke detection device (11) which detects and stores the signals from the sensors (S1-6) as soon as the transducer (14) supplies crankshaft angle signals and identifies that cylinder for which the sensor signal indicates passage through a pressure maximum which is above a threshold level (indicating that the cylinder contains compressed gas), judges that the identified cylinder is in its expansion stroke, and, corresponding to the construction of the engine, associates a respective operating stroke (induction, compression, exhaust) with the other cylinders. Ignition is then initially controlled by calculating the crankshaft angle from the number of angle increments between the increment at the pressure maximum and the actual increment ...

BLATTFEDER-VENTILZUNGE ALS VENTILSCHLIESSKOERPER EINES KOMPRESSOR-EINLASSODER AUSLASSVENTILS

METHOD AND DEVICE FOR DETECTING END OF START OPERATION IN INTERNAL COMBUSTION ENGINE FOR AUTOMOBILE

PROBLEM TO BE SOLVED: To provide a method and a device for detecting an end of a start operation in an internal combustion engine for an automobile independently of revolving speed of the internal combustion engine. SOLUTION: The method and the device for detecting the end of the start operation in the internal combustion engine 1 for an automobile which can discriminate the start operation and a steady-state condition of the internal combustion engine 1 is provided for a starter having a high starting device revolving speed. In this case, at least one operating variable of the internal combustion engine 1 different from the revolving speed of the internal combustion engine 1 is determined. This one variable is compared with the predetermined threshold value. When the operating variable reaches the threshold value or exceeds it, the end of the start operation is detected. COPYRIGHT: (C)2004,JPO ...

Verfahren und Vorrichtung zur Arbeitstakterkennung bei einem Viertaktmotor

Einrichtung zur Lasterfassung bei einer Brennkraftmaschine

Einrichtung zur Lasterfassung bei einer Brennkraftmaschine mit einem Drucksensor, der im Brennraum der Brennkraftmaschine angeordnet ist und ein vom Brennraumdruck abhängiges Ausgangssignal liefert, mit einem Kurbelwinkelsensor zur Erfassung des Kurbelwellenwinkels und einer Recheneinrichtung, die die Last aus Relativwerten des Ausgangssignals des Drucksensors bei vorgebbaren Kurbelwellenwinkeln ermittelt, dadurch gekennzeichnet, dass die Last aus der Differenz von zwei Integralwerten ermittelt wird, wobei die Integralwerte durch Integration des Ausgangssignals des Drucksensors zwischen jeweils zwei verschiedenen, vorgebbaren Kurbelwellenwinkeln bestimmt werden.

VERFAHREN ZUM ERKENNEN IRREGULAERER VERBRENNUNGSVORGAENGE IN EINER BRENNKRAFTMASCHINE UND VORRICHTUNG ZUR DURCHFUEHRUNG DES VERFAHRENS

Load sensing device for internal combustion engine

The sensing device has a pressure sensor which is mounted in te combustion chamber of the engine. It supplies an output signal dependent on the pressure in the combustion chamber. It has a crankshaft angle sensor for detecting the crankshaft angle, which determines the load from the output signal from the pressure sensor at predetermine angles of the crankshaft. The load is determined from relative values of the output signal form the pressure sensor. The load may be determined from the difference between pressure values at two different, predetermined crankshaft angles. The load may also be determined from the difference between tow integral values with the integral values each being determined by integration of the output signals of the pressure sensor between two different, predetermined crankshaft angles.

DRUCKVENTILEINRICHTUNG FUER TAUCHKOLBENKOMPRESSOREN

Device for operating an internal combustion (IC) engine has a casing to support a sensor element alongside a functional unit for operating engine

A sensor casing (20) has a sensor element (15) and fits between a functional unit (10) and a casing (5) for supporting the sensor casing in a device that acts as a spark plug, a heater plug, an intake valve, an exhaust valve or a fuel injection valve. The sensor element is embedded between upper (40) and lower (45) contact layers separated from the sensor casing by insulating layers (50,55).

METHOD AND DEVICE FOR DETECTING ABNORMAL COMBUSTION PHENOMENA IN AN INTERNAL COMBUSTION ENGINE

DRUCKLUFTERZEUGUNGSANLAGE

METHOD FOR DETECTING ABNORMAL COMBUSTION PHENOMENA IN AN INTERNAL COMBUSTION ENGINE AND DEVICE FOR IMPLEMENTING SUCH METHOD

A method is provided for detecting abnormal combustion phenomena in an internal combustion engine and a device for implementing such method according to which a parameter characterizing the combustion is detected by means of a sensor, preferably a light sensor. To distinguish between the abnormal phenomena and the normal phenomena of the combustion, the signal filtered from the point of view of its symmetry with respect to an immaginery symmetry axis passing by the maximum point of the signal is analyzed. If the signal is not symmetrical with respect to such axis, an identification signal of an abnormal combustion is provided. To implement such method, a symmetry pulse is generated which marks the occurence of the signal maximum. As a function of this pulse, two values are produced, one characterizing the profile of the signal before the maximum and the other one characterizing the profile of the signal after the maximum, and those values are compared between each other.

Verfahren zur Korrektur der Lage einer Bezugsmarke

Membrane support for brake servo cylinder - has insert disc with profiled ribs for rolling support

The brake servo cylinder membrane support has a plate (18) with a series of radial ribs (17) whose outer edges forms a surface onto which the membrane (13) rolls as the control valve is depressed (2). The inner corners (23) of the ribs are rounded to prevent pinching the ribs. The ribs are separately applied to the support plate and provide a low cost support which does not hinder the operation of the servo.

Method and arrangement for detecting the end of a start operation in an internal combustion engine of a motor vehicle

A method and an arrangement for detecting the end of a start operation in an internal combustion engine ( 1 ) of a motor vehicle make it possible to distinguish the start operation from a steady-state condition of the engine ( 1 ) even for starters having a high starter rpm. At least one operating variable of the engine is determined which is different from the rpm thereof. The at least one operating variable is compared to a pregiven threshold value. The end of the start operation is detected when the at least one operating variable reaches or exceeds the threshold value.

Process and device for controlling IC engine

DEVICE FOR OPERATING INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To reduce a labor and a cost for manufacture by incorporating various types of sensors as a module in a device. SOLUTION: This device for operating an internal combustion engine comprises a casing 5, and the casing 5 supports one additional sensor element 15 in addition to a function unit 10 for operating the internal combustion engine. A sensor casing 20 for storing the sensor element 15 therein is installed in the device, and the casing 5 of the device 1 supports the sensor casing 20. COPYRIGHT: (C)2003,JPO ...

Method and arrangement for detecting the end of a start operation in an internal combustion engine of a motor vehicle

A method and an arrangement for detecting the end of a start operation in an internal combustion engine ( 1 ) of a motor vehicle make it possible to distinguish the start operation from a steady-state condition of the engine ( 1 ) even for starters having a high starter rpm. At least one operating variable of the engine is determined which is different from the rpm thereof. The at least one operating variable is compared to a pregiven threshold value. The end of the start operation is detected when the at least one operating variable reaches or exceeds the threshold value.

Impianto per produrre aria compressa.