Electronic control apparatus

In an electronic control apparatus, a microcomputer stops its operation when a power voltage supplied from a regulator starts to fall. When a low voltage detection circuit detects fall of the power voltage, the microcomputer is reset immediately and a communication start detection circuit is permitted to output a communication start signal. It is also possible to maintain the microcomputer in a wait state until proceeding to a sleep mode, and proceed to a normal operation mode when a power-on start signal is changed to be active in a period of the wait state.

Method and apparatus for generating an ion current between electrodes of a spark plug

The invention relates to a method for generating an ion current which occurs as a direct current between a central electrode and one or more side electrodes of a spark plug of a spark ignition engine which is supplied repeatedly with an ignition voltage from an ignition voltage source, wherein the spark ignition engine is assigned an engine control unit, which, in an engine cycle, determines for each spark plug a target ignition point and/or an activation point for the ignition voltage source before the target ignition point, and a second voltage source is provided, which delivers a second voltage for the generation of the ion current, wherein the second voltage source lying in the engine cycle for a first time interval Δt 1 , which is shorter than the duration of the engine cycle, is connected to the electrodes of the spark plug, and wherein the ion current flowing as a result of the application of the second voltage to the electrodes of the spark plug takes a path which avoids the ignition voltage source.

Ignition apparatus for internal combustion engine

An ignition apparatus includes a blow-off determining unit 5 b . The blow-off determining unit 5 b determines, when the value ΔI 2 of the time derivative of a secondary electric current exceeds a predetermined threshold value Z during a determination period, that blow-off has occurred; the determination period is a predetermined time period ΔT from the start of a spark discharge by a main ignition circuit 3 . Further, when it is determined that blow-off has occurred during a main ignition (full-transistor ignition), it is controlled to perform a continuing spark discharge after the main ignition in a next cycle. Moreover, a secondary electric current command value in performing the continuing spark discharge is set-to an electric current value that is obtained by adding a predetermined electric current value a to the secondary electric current value I 2 x immediately before the occurrence of blow-off. Consequently, in the next cycle, it is possible to reliably prevent blow-off, thereby reliably preventing misfire.

Ignition device for internal combustion engine

An ignition device includes an ignition coil, an ignition plug and ignition control unit. The ignition control unit includes a secondary current adjusting unit that adjusts, in each cycle, an amount of the secondary current after initiating the discharge, a discharge extension detecting unit that detects an amount of extension of the discharge, and a short determination unit that determines whether a discharge-short has occurred. The ignition control unit controls the secondary current control unit such that a first step and a second step are repeatedly executed. The first step decreases the secondary current while keeping the secondary current higher than a predetermined lower current limit, when the extension amount detected by the discharge extension detecting unit is a predetermined extension amount or more. The second step increases the secondary current when the short determination unit determines that a discharge-short has occurred.

Winding plan for a transformer of a step-up converter and ignition system for supplying a spark gap of an internal combustion engine with electrical power

A step-up converter and an ignition system including a step-up converter are provided, which enable a better automated manufacture and reduced electrical insulation measures by a step-up converter constructed as follows: a transformer including a primary coil and a secondary coil galvanically isolated from the primary coil, the secondary coil being wound in multiple layers, and the primary coil being wound coaxially to the secondary coil over an outermost layer of the secondary coil, a first electrical terminal of the secondary coil branching off from an innermost layer of the secondary coil. The first electrical terminal of the secondary coil is configured for electrical connection to a high-voltage terminal for the spark gap.

Ignition device

The return circuit of the ignition device returns to the battery the current supplied to the primary coil by the operation of the second circuit, and the voltage detection unit detects the voltage VB. The operation stopping unit monitors the voltage VB and when it is determined that the voltage VB is excessive, that is, when the voltage VB exceeds the threshold voltage VBc, it stops the supply of energy by the second circuit. As a result, when a load dump state occurs, the supply of energy by the second circuit can be stopped. Thus, when a load dump state occurs by the operation of the second circuit, other devices can be protected from overvoltage.

Engine ignition control unit for improved engine starting

In at least some implementations, a method of operating an ignition system for a combustion engine includes charging an energy storage device during at least a portion of the time when the engine is operating, permitting the level of energy stored on the charge storage device to decrease over time after the engine ceases to operate, determining the energy level on the energy storage device when the engine is restarted after having ceased operating, and setting at least one engine operational parameter as a function of the determined energy level. In at least some implementations, the at least one engine operational parameter may include one or more of: richness of a fuel and air mixture to be delivered to the engine, ignition timing, desired engine idle speed.

Ignition apparatus

An ignition apparatus for internal combustion engines is provided. The ignition apparatus is equipped with an ECU. The ECU monitors a path length of a discharge of a spark for a period of time in which a second circuit delivers or inputs energy in the form of a threshold value determination. When the path length has become too short, the ECU determines that ignition is expected to be delayed and then selects a special mode to control the delay of the ignition. The ECU increase a target value of an energy input amount. This enables the delay of ignition resulting from a short extension of the path length to be minimized. The ignition apparatus equipped with the second circuit to continue the discharge of sparks is, thus, capable of reducing a variation in ignition without the need for uniformly increasing the energy input amount.

Ignition device of internal-combustion engine

(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。

Electronic control apparatus

本发明公开一种电子控制装置。在电子控制装置(1)中，在从调节器(4)供应的电源电压(VOM)开始下降时，微型计算机(3)停止其操作。在低电压检测电路(10)检测到所述电源电压(VOM)的下降时，所述微型计算机(3)立即复位并且允许通信开始检测电路(6)输出通信开始信号。也可以将微型计算机(3)维持在等待状态直到进行到睡眠模式，并且在所述等待状态的时段中上电开始信号改变到有效时进行到正常操作模式。

Ignition device for internal combustion engine

Ignition device

An ignition apparatus includes: sparking coil supplying a sparking plug with a high voltage; an energy supply device supplying the sparking coil with energy; a first switch disposed therebetween; and a control device controlling the first switch's conduction. The energy supply device has a DC power supply, a resonance coil connected to the DC power supply, a sparking capacitor connected to the resonance coil, and a second switch disposed between the sparking capacitor and an earth, and charges the sparking capacitor to have a voltage value larger than that of the DC power supply in absolute value by making the resonance coil and the sparking capacitor generate an LC resonance when the second and first switches are turned ON and OFF, respectively, according to an instruction from the control device whereas supplying the sparking coil with energy when the second and first switches are operated inversely according to another instruction.

IGNITION SYSTEM

Method and apparatus for controllably generating sparks in an ignition system or the like

An apparatus for controllably generating sparks is provided. The apparatus includes a spark generating device; at least two output stages connected to the spark generating device; means for charging energy storage devices in the output stages and at least partially isolating each of the energy storage devices from the energy storage devices of the other output stages; and, a logic circuit for selectively triggering the output stages to generate a spark. In accordance with one aspect of the invention, the logic circuit can be configured to fire the stages at different times, in different orders, and/or in different combinations to provide the spark generating device with output pulses having substantially and desired waveshape and energy level to thereby produce a spark having substantially any desired energy level and plume shape at the spark generating device to suit any application.

POWER SUPPLY FOR RADIOFREQUENCY IGNITION WITH DOUBLE-STAGE AMPLIFIER

The invention relates to a power supply device for a radiofrequency ignition, said device being intended to supply a DC voltage at a predefined frequency to a series resonator and comprising a power supply source (3) able to deliver a DC power supply voltage (Valim), a DC-DC converter (4) amplifying said DC power supply voltage (Valim) and delivering on one output a DC voltage, known as the intermediate voltage (Vinter), the amplitude of which is higher than said DC power supply voltage, and a power switch controlled by a control signal for selectively applying said intermediate voltage (Vinter) to the series resonator at a control frequency equal to said predefined frequency. According to the invention, the DC-DC converter comprises two stages, a voltage raising stage (41) and a voltage regulating stage (42) so as to reduce the voltage drops at the output side of the converter when the ignition generates sparks.

IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES

Ignition device for internal combustion engine

When an abnormality judgement section (28) judges that there is a failure of an energy inputting circuit (6), an energy inputting line (β), through which electrical energy is inputted from the energy inputting circuit (6) to a primary winding (3), is changed over to a disconnected state by output halt switching means (29). As a result, since inputting of electrical energy to the primary winding (3) is thereby halted, problems arising due to continuation of inputting electrical energy to the energy inputting circuit (6) can be prevented, even in the event of a failure of the energy inputting circuit (6), so that reliability can be enhanced.

Ignition apparatus having circuit to continue spark discharge in an internal combustion engine

An ignition apparatus for internal combustion engines is provided. The ignition apparatus is equipped with an ECU. The ECU monitors a path length of a discharge of a spark for a period of time in which a second circuit delivers or inputs energy in the form of a threshold value determination. When the path length has become too short, the ECU determines that ignition is expected to be delayed and then selects a special mode to control the delay of the ignition. The ECU increase a target value of an energy input amount. This enables the delay of ignition resulting from a short extension of the path length to be minimized. The ignition apparatus equipped with the second circuit to continue the discharge of sparks is, thus, capable of reducing a variation in ignition without the need for uniformly increasing the energy input amount.

Ignition system for IC engine used on a motorcycle

The ignition system comprises an ignition unit (8) providing a high voltage in order to produce a spark on the spark plug. The circuit includes a capacitor discharging in order to produce the energy for the spark. The system includes a circuit (9) for controlling the advance of the ignition. A DC-DC converter (5) comprises a transformer (6) having a primary winding (6a) and a secondary winding (6b) supplying the ignition unit (8). A second secondary winding (6c) supplies the ignition advance control circuit. The circuit also includes a control system (7,T) controlling the flow of current in the primary winding (6a) of the transformer. Both secondary windings are connected in indirect mode. The DC-DC converter (5) receives a voltage and direct current (Vb) provided by an alternating current generator (ACG) via a control and rectifying circuit (2).

Ignition apparatus

Ignition device for internal combustion engine

In the present invention, when an abnormality determination means (28) determines the presence of a breakdown of an energy input circuit (6), an energy input line (β) that inputs electrical energy from the energy input circuit (6) to a primary coil (3) is switched to an off state by means of an output halting switch means (29). As a result, because the energy input to the primary coil (3) is halted, even in the unlikely situation that the energy input circuit (6) has undergone a breakdown, it is possible to avoid the problem of a continuation of electrical energy input, and so it is possible to increase reliability.

Electronic control device

Elektronische Steuereinrichtung, mit:einer Steuerschaltung (3) zum Steuern einer einen Steuerungsgegenstand bildenden Vorrichtung;einem Kommunikationstreiber (5) zum Transformieren oder Umsetzen von an ihn angelegten Signalen für eine Kommunikation zwischen der Steuerschaltung (3) und einem externen Gerät über eine Kommunikationssammelleitung;einer Prüfschaltung (6, 25, 26) für die Überprüfung, ob die Kommunikation über die Kommunikationssammelleitung begonnen hat;einer Zwischenspeicherschaltung (7) zum Zwischenspeichern eines Kommunikationsstartsignals, das von der Prüfschaltung (6, 25, 26) ausgegeben wird;einer Energieschaltung (4) für die Erzeugung einer Versorgungsspannung, die der Steuerschaltung in Übereinstimmung mit einem Steuersignal, das von der Steuerschaltung ausgegeben wird, oder dem Kommunikationsstartsignal, das über die Zwischenspeicherschaltung (7) angelegt wird, zugeführt wird; undeiner Niederspannungserfassungsschaltung (10) für die Ermittlung des Abfalls der Versorgungsspannung unter einen vorbestimmten Schwellwertpegel,wobei die Steuerschaltung (3) durch ein Niederspannungserfassungssignal, das von der Niederspannungserfassungsschaltung (10) ausgegeben wird, rückgesetzt wird und der Prüfschaltung (6, 25, 26) die Ausgabe des Kommunikationsstartsignals erlaubt wird. An electronic control device comprising: a control circuit (3) for controlling a device forming a control object; a communication driver (5) for transforming or converting signals applied to it for communication between the control circuit (3) and an external device via a communication bus; a Test circuit (6, 25, 26) for checking whether the communication via the communication bus has started; a buffer circuit (7) for buffering a communication start signal which is output by the test circuit (6, 25, 26); a power circuit (4) for generating a supply voltage to be supplied to the control circuit in accordance with a control signal output from the control circuit or the communication start ...

Winding plan for a transformer of a step-up converter and ignition system for supplying a spark gap of an internal combustion engine with electrical power

A step-up converter and an ignition system including a step-up converter are provided, which enable a better automated manufacture and reduced electrical insulation measures by a step-up converter constructed as follows: a transformer including a primary coil and a secondary coil galvanically isolated from the primary coil, the secondary coil being wound in multiple layers, and the primary coil being wound coaxially to the secondary coil over an outermost layer of the secondary coil, a first electrical terminal of the secondary coil branching off from an innermost layer of the secondary coil. The first electrical terminal of the secondary coil is configured for electrical connection to a high-voltage terminal for the spark gap.

Ignition device

Provided is an ignition device for an internal combustion engine. The ignition device has an ECU. The ECU calculates a target value E* of an energy input amount with respect to an ignition plug on the basis of an intra-cylinder flow rate v, an intra-cylinder pressure P, and an air-fuel ratio AFR, calculates an instruction value I* for a secondary current on the basis of the intra-cylinder flow rate v, and controls the operation of a second circuit in accordance with the target value E* and the instruction value I*. By firstly calculating the target value E* on the basis of the intra-cylinder flow rate v, the intra-cylinder pressure P, and the air-fuel ratio AFR, control of the energy input amount in accordance with the operation condition of the internal combustion engine becomes possible. In addition, by calculating the instruction value I* on the basis of the intra-cylinder flow rate v, the secondary current can be controlled such that blow-out of a spark discharge does not occur. As a result, fuel consumption can be improved by setting the energy input amount with respect to the ignition plug variable in the ignition device.

IGNITION SYSTEM

Method and apparatus for controllably generating sparks in an ignition system or the like

An apparatus for controllably generating sparks is provided. The apparatus includes a spark generating device; at least two output stages connected to the spark generating device; means for charging energy storage devices in the output stages and at least partially isolating each of the energy storage devices from the energy storage devices of the other output stages; and, a logic circuit for selectively triggering the output stages to generate a spark. In accordance with one aspect of the invention, the logic circuit can be configured to fire the stages at different times, in different orders, and/or in different combinations to provide the spark generating device with output pulses having substantially and desired waveshape and energy level to thereby produce a spark having substantially any desired energy level and plume shape at the spark generating device to suit any application.

Ignition device

Ignition device

A starting and ignition system for a motor vehicle

Method and systems for adaptive ignition energy

A method and systems for an engine igniter excitation system includes an energy storage device, a first adaptive comparator configured to control the storage of an amount of energy in the energy storage device wherein the amount of energy is determined using at least one of an environmental parameter of the engine and a process parameter of the engine. The system also includes a second adaptive comparator communicatively coupled to the energy storage device wherein the second adaptive comparator is configured to control a rate of energy delivery to the energy storage device using at least one of an environmental parameter of the engine and a process parameter of the engine. The system also includes an igniter configured to generate a spark based on the amount of stored energy and the rate of energy delivery.

内燃机用点火装置

在本发明涉及的内燃机用点火装置中，使用对按气缸区分的放电持续信号IGW#1～4进行多路复用后的多路复用信号IGWc、或者对点火信号IGT附加放电持续信号IGW以及2次电流指令信号IGA后的综合信号IGC、或者对多路复用信号IGWc、综合信号IGC附加2次电流指令信号IGA后的信号来进行火花塞的持续火花放电。根据该构成，能够削减将ECU与控制器之间连接的信号线的根数，进而，还能够削减2次电流指令信号IGA用的信号线。

Ignition device

According to an ignition device, a first switching unit applies a voltage between electrodes of by spark plug by turning on/off energization from an on-vehicle battery to a primary coil. Further, a second switching unit applies a voltage having the same direction as a spark discharge generated by turning on/off the first switching unit between the electrodes of the spark plug by supplying electrical energy accumulated in a booster circuit into a primary coil. Accordingly, it is possible to greatly reduce a complexity of the on/off switching of the first and second switching units compared to a conventional technology.

内燃機関用の点火装置

【課題】着火性を向上させやすい内燃機関用の点火装置を提供すること。【解決手段】点火装置は、点火コイルと点火プラグと点火制御部とを有する。点火制御部は、各サイクルにおいて放電の開始後に二次電流の値を調整する二次電流調整部を有する。点火制御部は、放電の伸び量を検出する伸び量検出部を有する。点火制御部は、二次電圧値取得部による二次電圧値の取得結果に基づいて、放電に短絡が発生したか否かを判定する短絡判定部を有する。点火制御部は、各サイクルにおいて、第一ステップと第二ステップとを繰り返すよう二次電流制御部を制御する。第一ステップＳ４、Ｓ５は、伸び量検出部による伸び量の検出値が予め設定した設定伸び量以上となった時、二次電流の値を予め設定した下限設定電流値以下とならないよう減少させる。第二ステップＳ６、Ｓ２は、短絡判定部によって放電の短絡が発生したと判断された時、二次電流の電流値を上昇させる。【選択図】図１

Ignition device for internal combustion engine

An ignition device includes an ignition coil, an ignition plug and ignition control unit. The ignition control unit includes a secondary current adjusting unit that adjusts, in each cycle, an amount of the secondary current after initiating the discharge, a discharge extension detecting unit that detects an amount of extension of the discharge, and a short determination unit that determines whether a discharge-short has occurred. The ignition control unit controls the secondary current control unit such that a first step and a second step are repeatedly executed. The first step decreases the secondary current while keeping the secondary current higher than a predetermined lower current limit, when the extension amount detected by the discharge extension detecting unit is a predetermined extension amount or more. The second step increases the secondary current when the short determination unit determines that a discharge-short has occurred.

Method and systems for adaptive ignition energy

A method and systems for an engine igniter excitation system includes an energy storage device, a first adaptive comparator configured to control the storage of an amount of energy in the energy storage device wherein the amount of energy is determined using at least one of an environmental parameter of the engine and a process parameter of the engine. The system also includes a second adaptive comparator communicatively coupled to the energy storage device wherein the second adaptive comparator is configured to control a rate of energy delivery to the energy storage device using at least one of an environmental parameter of the engine and a process parameter of the engine. The system also includes an igniter configured to generate a spark based on the amount of stored energy and the rate of energy delivery.

Sistema di accensione ed avviamento per un motoveicolo.

An ignition and starting system for a motor-vehicle

Eine Anlass- und Zündanlage für einen Motorfahrzeug

点火装置

【課題】１つの点火プラグ２に対して２つの点火コイル３Ａ、３Ｂから電気エネルギーを与える内燃機関用の点火装置１において、第１、第２スイッチング手段８、１０のオンオフ制御に係わる煩雑さを低減する。 【解決手段】点火装置１によれば第１スイッチング手段８は、車載バッテリ１７から１次コイル５Ａへの通電をオンオフすることで点火プラグ２の電極間に電圧を印加する。また、第２スイッチング手段１０は、昇圧回路９に蓄えた電気エネルギーを１次コイル５Ｂに投入することで、点火プラグ２の電極間に、第１スイッチング手段８のオンオフにより発生するのと同一方向の電圧を印加する。これにより、第１、第２スイッチング手段８、１０のオンオフ制御に係わる煩雑さを従来に比べて大きく低減することができる。 【選択図】図１

点火装置

【課題】１つの点火プラグに対して２つの１次コイルから電気エネルギーを与える内燃機関用の点火装置において、第１、第２スイッチング手段のオンオフ制御に係わる煩雑さを低減する。【解決手段】点火装置１によれば第１スイッチング手段８は、車載バッテリ１７から１次コイル５Ａへの通電をオンオフすることで点火プラグ２の電極間に電圧を印加する。また、第２スイッチング手段１０は、電気エネルギーを１次コイル５Ｂに投入することで、点火プラグ２の電極間に、第１スイッチング手段８のオンオフにより発生するのと同一方向の電圧を印加する。これにより、第１、第２スイッチング手段８、１０のオンオフ制御に係わる煩雑さを従来に比べて大きく低減することができる。【選択図】図１

Electromagnetic wave oscillation device including buck-boost circuit

An electromagnetic wave oscillation device includes: a buck-boost circuit having buck-boosters and switching elements; an electromagnetic wave oscillator; an amplifier to amplify an electromagnetic wave and supply an amplified electromagnetic wave to a resistive part; a detector to detect a reflected wave from the resistive part; and a controller to send to one of the switching elements an operation signal in predetermined order, synchronizing with an oscillation timing of the electromagnetic wave oscillator, to output a current from the corresponding buck-boosters to the amplifier in a non-smooth manner. When a detected value of the reflected wave exceeds a predetermined value upon said current output by operating the one of the switching elements, the controller stops sending the operation signal to one or more of the other switching elements that are supposed to output the current after said current output by operating the one of the switching elements.

点火装置

【課題】１つの点火プラグ２に対して２つの点火コイル３Ａ、３Ｂから電気エネルギーを与える内燃機関用の点火装置１において、第１、第２スイッチング手段８、１０のオンオフ制御に係わる煩雑さを低減する。【解決手段】点火装置１によれば第１スイッチング手段８は、車載バッテリ１７から１次コイル５Ａへの通電をオンオフすることで点火プラグ２の電極間に電圧を印加する。また、第２スイッチング手段１０は、昇圧回路９に蓄えた電気エネルギーを１次コイル５Ｂに投入することで、点火プラグ２の電極間に、第１スイッチング手段８のオンオフにより発生するのと同一方向の電圧を印加する。これにより、第１、第２スイッチング手段８、１０のオンオフ制御に係わる煩雑さを従来に比べて大きく低減することができる。【選択図】図３

Zündvorrichtung

Zündvorrichtung (1) für eine Verbrennungskraftmaschine, welche elektrische Energie von zwei Zündspulen aus einer ersten Zündspule (3A) und einer zweiten Zündspule (3B) hin zu einer einzelnen Zündkerze (2) führt, wobei die Zündvorrichtung (1) aufweist:eine erste Schalteinheit (8), welche eine Hauptzündung durch Aufbringen einer Spannung zwischen Elektroden der Zündkerze (2) durch An- und Ausschalten der Bestromung einer Primärspule (5A) der ersten Zündspule (3A) ausgehend von einer fahrzeugseitigen Batterie (17) startet;eine Verstärkerschaltung (9), welche eine Spannung der fahrzeugseitigen Batterie (17) erhöht und die elektrische Energie sammelt; undeine zweite Schalteinheit (10), welche einen Strom mit der gleichen Richtung wie die durch das An- und Ausschalten der ersten Schalteinheit (8) erzeugte Funkenentladung zwischen den Elektroden der Zündkerze (2) durch Zuführen der in der Verstärkerschaltung (9) gesammelten elektrischen Energie in eine negative Seite (ein zweites Ende) der Primärspule (5B) der zweiten Zündspule (3B) aufbringt; wobeieine Funkenentladung zwischen den Elektroden der Zündkerze (2) mit der gleichen Richtung wie die durch das An- und Ausschalten der ersten Schalteinheit (8) erzeugte Funkenentladung durch Zuführen der elektrischen Energie in der Verstärkerschaltung (9) in die Primärspule (5B) der zweiten Zündspule (3B) durch die zweite Schalteinheit (10) fortsetzt wird.

Control apparatus and control method

A discharge control unit causes a high voltage to be generated in a secondary coil by controlling an igniter unit so as to block a flow of current from a primary coil towards a ground side, and controls a spark plug so that electric discharge is formed between electrodes of the spark plug. An energy input control unit controls an energy input unit to input electrical energy to an ignition coil after start of control of the spark plug by the discharge control unit. A normal ignition control unit controls ignition of an air-fuel mixture in a combustion chamber only through control of the spark plug by the discharge control unit. A specific ignition control unit controls the ignition of the air-fuel mixture in the combustion chamber through control of the spark plug by the discharge control unit and through control of the energy input unit by the energy input control unit. A control unit performs ignition control by the specific ignition control unit until a first predetermined period elapses after a start-up condition of an engine is established, and switches to ignition control by the normal ignition control unit after the elapse of the first predetermined period.

Electromagnetic wave oscillation device including buck-boost circuit

An electromagnetic wave oscillation device includes: a buck-boost circuit having buck-boosters and switching elements; an electromagnetic wave oscillator; an amplifier to amplify an electromagnetic wave and supply an amplified electromagnetic wave to a resistive part; a detector to detect a reflected wave from the resistive part; and a controller to send to one of the switching elements an operation signal in predetermined order, synchronizing with an oscillation timing of the electromagnetic wave oscillator, to output a current from the corresponding buck-boosters to the amplifier in a non-smooth manner. When a detected value of the reflected wave exceeds a predetermined value upon said current output by operating the one of the switching elements, the controller stops sending the operation signal to one or more of the other switching elements that are supposed to output the current after said current output by operating the one of the switching elements.

制御装置

【課題】内燃機関始動時の混合気の着火性を向上し、内燃機関を早期に始動させることが可能な制御装置を提供する。【解決手段】制御部８１は、「放電制御手段」により点火プラグ４０を制御することのみによって、燃焼室２８の混合気の点火を制御する「通常点火制御手段」を有する。また、制御部８１は、「放電制御手段」により点火プラグ４０を制御し、かつ、「エネルギ投入制御手段」によりエネルギ投入部７０を制御することによって、燃焼室２８の混合気の点火を制御する「特定点火制御手段」を有する。制御部８１は、エンジン２０の始動の条件である始動条件が成立した後、第１の所定期間である第１所定期間が経過するまで「特定点火制御手段による点火制御」を行い、第１所定期間が経過したとき、「通常点火制御手段による点火制御」に切り替える。【選択図】図１

Zuendvorrichtung fuer eine brennkraftmaschine

内燃機関用点火装置

【課題】点火プラグの電極摩耗を減らし、無駄な電力消費を抑え、着火性を高めることができる内燃機関用の点火装置を提供する。 【解決手段】主点火ＣＤＩ回路５によって主点火を開始した直後に、エネルギ投入用コンデンサ２１に蓄えた電荷を１次コイル３に投入し、主点火に続いて継続火花放電を継続させる。エネルギ投入回路６が１次コイル３に投入する電気エネルギをコントロールすることで、吹き消え再放電を防止して点火プラグ１の電極摩耗を減らすとともに、電力消費を抑えることができ、さらに高い着火性能を発揮することができる。主点火に続く継続火花放電では２次電流を同一方向に継続して流すため、２次電圧が交番せず、火花放電が途切れ難く、吹き消えを回避できる。また、主点火ＣＤＩ回路５とエネルギ投入回路６の組み合わせにより回路構成をシンプルにでき、小型化と低コスト化を達成できる。 【選択図】 図１

Freilaufendes kapazitives entladungszündsystem mit zündfunkenfrequenzsteuerung

Zündvorrichtung

Gemäß einer Zündvorrichtung 1 bringt eine erste Schalteinheit 8 durch An-/Ausschalten der Bestromung ausgehend von einer fahrzeugseitigen Batterie 17 hin zu einer Primärspule 5A eine Spannung zwischen Elektroden einer Zündkerze 2 auf. Ferner bringt eine zweite Schalteinheit 10 eine Spannung mit der gleichen Richtung wie eine durch das An-/Ausschalten der ersten Schalteinheit 8 erzeugte Funkenentladung zwischen den Elektroden der Zündkerze 2 durch Zuführen von elektrischer Energie, die in einer Verstärkerschaltung 9 gesammelt ist, in eine Primärspule 5B auf. Entsprechend ist es möglich, eine Komplexität des An-/Aus-Umschaltens der ersten und zweiten Schalteinheiten 8 und 10 im Vergleich zu einer herkömmlichen Technologie in hohem Maße zu reduzieren.

内燃機関用点火装置

　本発明に係る内燃機関用点火装置では、気筒別の放電継続信号ＩＧＷ♯１～４を多重化した多重化信号ＩＧＷｃ、または点火信号ＩＧＴに放電継続信号ＩＧＷ及び２次電流指令信号ＩＧＡを付加した統合信号ＩＧＣ、あるいは多重化信号ＩＧＷｃや統合信号ＩＧＣに２次電流指令信号ＩＧＡを付加した信号を用いて点火プラグの継続火花放電を行う。この構成によれば、ＥＣＵとコントローラとの間を接続する信号線の本数、さらには２次電流指令信号ＩＧＡ用の信号線をも削減することが可能となる。

用于改进发动机起动的发动机点火控制单元

在至少一些具体实施中，一种操作用于燃烧发动机的点火系统的方法包括：在所述发动机操作的至少一部分时间期间为能量存储设备充电，允许存储在电荷存储设备上的能量水平在所述发动机停止操作后随时间推移而减少，当所述发动机在停止操作后重新起动时确定所述能量存储设备上的能量水平，以及根据所确定的能量水平来设置至少一个发动机操作参数。在至少一些具体实施中，至少一个发动机操作参数可包括以下中的一者或多者：要递送到所述发动机的燃料和空气混合物的浓程度、点火正时、期望的发动机怠速速度。

点火装置

根据点火装置(1)，第1开关部(8)通过使从车载电池(17)向1次线圈(5A)的通电通断，向火花塞(2)的电极间施加电压。此外，第2开关部(10)通过将储存在升压电路(9)中的电能向1次线圈(5B)投入，向火花塞(2)的电极间施加与通过第1开关部(8)的通断产生的电压相同方向的电压。由此，能够使第1、第2开关部(8、10)的通断的复杂度相比以往大幅降低。

점화 장치

점화 장치(7)는 적어도 직류 전원(1)과, 점화 코일(2)과, 점화 플러그(3)와, 점화 스위치(4)와, 보조 전원(5)을 구비하는 점화 장치로서, 보조 전원(5)이 적어도 방전 에너지 축적 수단(54)과, 방전 스위치(56)와, 방전 드라이버(57)를 구비하고, 점화 코일(2)의 방전 기간 중에 흐르는 2차 전류(I 2 )를 검출하는 2차 전류 검출 수단(60)과, 2차 전류(I 2 )의 상한과 하한을 2값의 임계치에 의하여 임계치 판정하고, 그 판정 결과에 기초하여 방전 스위치(56)를 개폐 구동하는 2차 전류 피드백 제어 회로(61)로 이루어지는 2차 전류 피드백 제어 수단(6)을 구비하고, 상기 2차 전류의 극성을 전환하지 않고 보조 전원(5)으로부터의 에너지 투입을 실시한다.

Free-running capacitive discharge ignition system with spark frequency control

An ignition system is provided that marries a free-running discharge circuit with a fast-charging, high voltage converter without resulting in an excessive rate of discharge. To this end, the free-running discharge circuit employs a passive switch embodied either as a spark-gap device or a passive network of semiconductor elements. A feedback circuit detects discharge events at the discharge circuit and, in response thereto, selectively enables and disables the fast-charging converter. A spark rate clock is integrated into the feedback circuit for the purpose of setting the average discharge rate to a predetermined value.

点火装置および点火制御方法

【課題】内燃機関の燃焼室内の可燃混合気の着火を停止する必要がある際に起こり得る充電部に起因した不具合の発生を抑制することのできる点火装置および点火制御方法を得る。【解決手段】内燃機関（１）の燃焼室（２）内の可燃混合気の着火を停止する停止条件が成立している場合、点火プラグ（３）へのプラズマ発生エネルギーの供給を停止するとともに、充電部（４２）に充電されている直流エネルギーが放電されるように構成される。【選択図】図１

电子电路和包括电子电路的电容器放电系统

本专利申请公开了一种用于控制内燃机的电容器放电点火系统(100)中的火花塞(SP1)的火花的电子电路(101)。电子电路(101)包括：点火线圈(110)，该点火线圈被布置成向火花塞(SP1)提供电流；点火电容器(C1)，该点火电容器被布置成能够向初级绕组(L1)供应能量；电压源(130)，该电压源被布置成能够向点火电容器(C1)和初级绕组(L1)中的至少一个供应能量；第一开关(SW1)，该第一开关连接到第一初级端子(TL1)和第一电源端子(TS1)；第二开关(SW2)，该第二开关连接到第二电容器端子(TC2)和第二电源端子(TS2)；以及第三开关(SW3)，该第三开关连接到第二电容器端子(TC2)和第一电源端子(TS1)。还公开了一种包括上述电子电路(101)的电容器放电点火系统(100)以及包括该电容器放电点火系统(100)的内燃机。

用于改进发动机起动的发动机点火控制单元

在至少一些具体实施中，一种操作用于燃烧发动机的点火系统的方法包括：在所述发动机操作的至少一部分时间期间为能量存储设备充电，允许存储在电荷存储设备上的能量水平在所述发动机停止操作后随时间推移而减少，当所述发动机在停止操作后重新起动时确定所述能量存储设备上的能量水平，以及根据所确定的能量水平来设置至少一个发动机操作参数。在至少一些具体实施中，至少一个发动机操作参数可包括以下中的一者或多者：要递送到所述发动机的燃料和空气混合物的浓程度、点火正时、期望的发动机怠速速度。

内燃机的点火装置

内燃机的点火控制装置(1)，具备：点火线圈(2)，具有一次线圈(21)和二次线圈(22)；主点火电路部(3)，进行主点火动作；和能量投入电路部(4)，进行对于二次电流(I2)叠加同极性的电流的能量投入动作，设置信号生成电路部(5)，该信号生成电路部(5)基于控制主点火动作的主点火信号(IGT)的波形信息来生成控制能量投入动作的能量投入信号(IGW)及指示目标二次电流值(I2tgt)的目标二次电流指令信号(IGA)中的至少一方。

电子电路和包括电子电路的电容器放电系统

本专利申请公开了一种用于控制内燃机的电容器放电点火系统(100)中的火花塞(SP1)的火花的电子电路(101)。电子电路(101)包括：点火线圈(110)，该点火线圈被布置成向火花塞(SP1)提供电流；点火电容器(C1)，该点火电容器被布置成能够向初级绕组(L1)供应能量；电压源(130)，该电压源被布置成能够向点火电容器(C1)和初级绕组(L1)中的至少一个供应能量；第一开关(SW1)，该第一开关连接到第一初级端子(TL1)和第一电源端子(TS1)；第二开关(SW2)，该第二开关连接到第二电容器端子(TC2)和第二电源端子(TS2)；以及第三开关(SW3)，该第三开关连接到第二电容器端子(TC2)和第一电源端子(TS1)。还公开了一种包括上述电子电路(101)的电容器放电点火系统(100)以及包括该电容器放电点火系统(100)的内燃机。

Ignition apparatus and ignition control method

Provided are an ignition apparatus and an ignition control method capable of suppressing occurrence of a defect caused by a charge unit, which may occur when ignition of a combustible mixture in a combustion chamber of an internal combustion engine needs to be stopped. When a stop condition for stopping ignition of a combustible mixture in a combustion chamber ( 2 ) of an internal combustion engine ( 1 ) is satisfied, supply of plasma generation energy to an ignition plug ( 3 ) is stopped, and DC energy charged in a charge unit ( 42 ) is discharged.

Ignition apparatus for internal combustion engine

An ignition apparatus includes a blow-off determining unit 5 b . The blow-off determining unit 5 b determines, when the value ΔI2 of the time derivative of a secondary electric current exceeds a predetermined threshold value Z during a determination period, that blow-off has occurred; the determination period is a predetermined time period ΔT from the start of a spark discharge by a main ignition circuit 3 . Further, when it is determined that blow-off has occurred during a main ignition (full-transistor ignition), it is controlled to perform a continuing spark discharge after the main ignition in a next cycle. Moreover, a secondary electric current command value in performing the continuing spark discharge is set to an electric current value that is obtained by adding a predetermined electric current value α to the secondary electric current value I2x immediately before the occurrence of blow-off. Consequently, in the next cycle, it is possible to reliably prevent blow-off, thereby reliably preventing misfire.

Ignition device for internal combustion engines

An ignition device for engine according to the present invention performs continuous spark discharge of an ignition plug by using a multiplex signal, an integration signal or a control signal. In the multiplex signal, discharge continuous signals IGW#1 to 4 for cylinders of the engine have been multiplexed. In the integration signal, a discharge continuous signal IGW and a secondary current instruction signal IGA have been added to an ignition signal IGT. In the control signal, the secondary current instruction signal IGA has been added into the multiplex signal or the integration signal. This structure can reduce the total number of signal lines connected between an ECU and a controller, and further reduce a signal line to transmit the secondary current instruction signal IGA.

Ignition apparatus for an internal-combustion engine

An ignition apparatus for an internal-combustion engine includes a main ignition CDI circuit that has a main ignition boosting circuit boosting battery voltage and a main ignition capacitor storing electric charge boosted by the main ignition boosting circuit, and that releases the electric charge stored in the main ignition capacitor to a primary coil of an ignition coil to make an ignition plug generate spark discharge, and an energy input circuit that has an energy input boosting circuit boosting battery voltage and an energy input capacitor storing electric charge boosted by the energy input boosting circuit, and that releases the electric charge stored in the energy input capacitor to the primary coil, during a spark discharge started by operation of the main ignition CDI circuit, to make a secondary current flow in the same direction and to a secondary coil of the ignition coil, thereby making spark discharge continue which is started by the operation of the main ignition CDI circuit.

Ignition device

An ignition device at least equipped with a DC power source, an ignition coil unit, a spark plug, an ignition switch, and an auxiliary power source, wherein the auxiliary power source is at least equipped with a discharge energy accumulating means, a discharge switch, and a discharge driver. The ignition device is further equipped with a secondary-current feedback controlling means comprising a secondary current detecting means for detecting a secondary current flowing during the ignition coil unit discharge period, and a secondary current feedback control circuit-for determining an upper limit and a lower limit for the secondary current from binary threshold values, and driving so as to open and close the discharge switch on the basis of the determination results. Furthermore, energy is introduced from the auxiliary power source without switching the polarity of the secondary current.

Control apparatus and control method

A discharge control unit causes a high voltage to be generated in a secondary coil by controlling an igniter unit so as to block a flow of current from a primary coil towards a ground side, and controls a spark plug so that electric discharge is formed between electrodes of the spark plug. An energy input control unit controls an energy input unit to input electrical energy to an ignition coil after start of control of the spark plug by the discharge control unit. A normal ignition control unit controls ignition of an air-fuel mixture in a combustion chamber only through control of the spark plug by the discharge control unit. A specific ignition control unit controls the ignition of the air-fuel mixture in the combustion chamber through control of the spark plug by the discharge control unit and through control of the energy input unit by the energy input control unit. A control unit performs ignition control by the specific ignition control unit until a first predetermined period elapses after a start-up condition of an engine is established, and switches to ignition control by the normal ignition control unit after the elapse of the first predetermined period.

Ignition apparatus

An ignition apparatus includes: sparking coil supplying a sparking plug with a high voltage; an energy supply device supplying the sparking coil with energy; a first switch disposed therebetween; and a control device controlling the first switch's conduction. The energy supply device has a DC power supply, a resonance coil connected to the DC power supply, a sparking capacitor connected to the resonance coil, and a second switch disposed between the sparking capacitor and an earth, and charges the sparking capacitor to have a voltage value larger than that of the DC power supply in absolute value by making the resonance coil and the sparking capacitor generate an LC resonance when the second and first switches are turned ON and OFF, respectively, according to an instruction from the control device whereas supplying the sparking coil with energy when the second and first switches are operated inversely according to another instruction.

Internal combustion engine ignition apparatus

A resonance inductor is connected with a charging path through which an ignition condenser is charged; a first switching device controls charging of the ignition condenser; discharging of the ignition condenser is controlled by a second switching device whose collector terminal is connected with the other end of the primary coil of an ignition coil unit and whose emitter terminal is connected with the negative-polarity terminal of the ignition condenser; a clamp diode is connected between the one end of the primary coil and the collector terminal of the second switching device.

Method and apparatus for generating an ion current between electrodes of a spark plug

The invention relates to a method for generating an ion current which occurs as a direct current between a central electrode and one or more side electrodes of a spark plug of a spark ignition engine which is supplied repeatedly with an ignition voltage from an ignition voltage source, wherein the spark ignition engine is assigned an engine control unit, which, in an engine cycle, determines for each spark plug a target ignition point and/or an activation point for the ignition voltage source before the target ignition point, and a second voltage source is provided, which delivers a second voltage for the generation of the ion current, wherein the second voltage source lying in the engine cycle for a first time interval Δt 1 , which is shorter than the duration of the engine cycle, is connected to the electrodes of the spark plug, and wherein the ion current flowing as a result of the application of the second voltage to the electrodes of the spark plug takes a path which avoids the ignition voltage source.

内燃機関の点火装置

【課題】装置構成の変更やシステムの複雑化を回避しながら、主点火動作とエネルギ投入動作を制御性よく実施可能であり、小型で高性能な内燃機関の点火制御装置を提供する。【解決手段】一次コイル２１と二次コイル２２を有する点火コイル２と、主点火動作を行う主点火回路部３と、二次電流Ｉ２に対して同極性の電流を重畳させるエネルギ投入動作を行うエネルギ投入回路部４とを備える内燃機関の点火制御装置１において、主点火動作を制御する主点火信号ＩＧＴの波形情報に基づいて、エネルギ投入動作を制御するエネルギ投入信号ＩＧＷ、及び、目標二次電流値Ｉ２tgtを指示する目標二次電流指令信号ＩＧＡのうちの少なくとも一方を生成する信号生成回路部５を設ける。【選択図】図１