FR2616481A1 - Internal combustion engine electronic valve-control device and methods of implementation - Google Patents

Internal combustion engine electronic valve-control device and methods of implementation Download PDF

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Publication number
FR2616481A1
FR2616481A1 FR8708324A FR8708324A FR2616481A1 FR 2616481 A1 FR2616481 A1 FR 2616481A1 FR 8708324 A FR8708324 A FR 8708324A FR 8708324 A FR8708324 A FR 8708324A FR 2616481 A1 FR2616481 A1 FR 2616481A1
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France
Prior art keywords
engine
microcomputer
valves
speed
sensor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
FR8708324A
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French (fr)
Inventor
Yves Micolon
Herve Hamon
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Individual
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Individual
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Priority to FR8708324A priority Critical patent/FR2616481A1/en
Publication of FR2616481A1 publication Critical patent/FR2616481A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/02—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for reversing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/04—Sensors
    • F01L2820/042—Crankshafts position

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The invention relates to a device making it possible to control the valves of an internal combustion engine by virtue of an electronic control unit 1 with timing variable as a function, inter alia, of the speed of the engine. A microcomputer 4 samples, from the memory module 2 of the timing cartography defined previously on an engine test bed, the data (the timing angles) suitable for the engine speed which is determined from signals emitted by a rotational speed sensor 7 via an input module 5. By virtue of a sensor 9 which permanently determines the angular position of the crankshaft 10, the microcomputer sends, at the suitable moment, an electric signal towards the valves 11, 12 via (an) output stage(s) 14, 15. Various implementations of the device forming the subject of the present invention are founded on the variability of the timing as a function of the speed of the engine and on the possibilities of programming the microcomputer.

Description

DISPOSITIF ELECTRONiPUE DE COMMANDE
DE SOUPAPES DE MOTEUR A COMBUSTION INTERNE
ET PROCEDES DE MISE EN OEUVRE
La présente invention se rapporte a un dispositif électronique de commande de soupapes de moteur à combustion interne et a certains procédés de mise en oeuvre du dispositif.ELECTRONIC CONTROL DEVICE
VALVES FOR INTERNAL COMBUSTION ENGINES
AND METHODS OF IMPLEMENTATION
The present invention relates to an electronic device for controlling valves of an internal combustion engine and to certain methods of using the device.

La plupart des moteurs thermiques a 4 temps sont équipés d'une commande mécanique des soupapes (arbre à cames, poussoirs, culbuteurs,etc... > dont, par nature, la caractéristique principale est l'utilisation d'un diagramme constant de distribution déterminé par le profil des cames.Cela entraîne un rendement relativement médiocre du moteur du fait que le profil des cames est defini de telle manière que le temps d'ouverture des soupapes et, par conséquent, le remplissage du cylindre et la combustion du mélange gazeux ne peuvent étre considérés comme optimaux qu'a un régime donné du moteur (régime correspondant a l'obtention du couple maximum du moteur). Most 4-stroke thermal engines are fitted with mechanical valve control (camshaft, tappets, rocker arms, etc.), the main characteristic of which by nature is the use of a constant distribution diagram determined by the profile of the cams.This results in relatively poor engine performance since the profile of the cam is defined in such a way that the valve opening time and, therefore, the filling of the cylinder and the combustion of the gas mixture can only be considered optimal at a given engine speed (speed corresponding to obtaining the maximum engine torque).

La présente invention a pour objet un dispositif électronique permettant de commander les soupapes de telle manière que celles-ci s'ouvrent et se ferment selon un diagramme de distribution variable en fonction du régime du moteur (modulation du temps de croisement et de la durée d'ouverture des soupapes). Un des buts du dispositif est d'améliorer sensiblement le remplissage du cylindre et la combustion du mélange gazeux aux différents régimes. La puissance du moteur et son rendement se trouvent alors augmentés. The subject of the present invention is an electronic device making it possible to control the valves in such a way that they open and close according to a variable distribution diagram as a function of the engine speed (modulation of the crossing time and of the duration d opening of the valves). One of the aims of the device is to significantly improve the filling of the cylinder and the combustion of the gas mixture at different speeds. The engine power and its efficiency are then increased.

Le dispositif conforme a l'invention remplace la partie mecanique de la distribution (arbre à cames, culbuteurs,courroie ou pignons de distribution, etc...). Il comporte un capteur de vitesse de rotation et de référence angulaire du vilebrequin. Il fournit des informations a une centrale de commande utilisant avantageusement un microcalculateur.Les informations nécessaires & la commande de distribution (la cartographie de la distribution , les angles d'ouverture et de fermeture des soupapes ) sont déterminées au préalable sur un banc d'essais de moteurs puis memorisées dans un module électronique selon les techniques en vigueur. The device according to the invention replaces the mechanical part of the distribution (camshaft, rocker arms, timing belt or pinions, etc.). It includes a rotation speed and angular reference sensor for the crankshaft. It provides information to a control center, advantageously using a microcomputer. The information necessary for the distribution control (the distribution map, the valve opening and closing angles) are determined beforehand on a test bench. motors then stored in an electronic module according to the techniques in force.

Le microcalculateur détermine les angles d'ouverture et de fermeture successifs des soupapes à partir de ces informations et de celles transmises par le capteur. Puis, via une (des) interface(s) de sortie, il commande électriquement les soupapes. The microcomputer determines the successive opening and closing angles of the valves on the basis of this information and that transmitted by the sensor. Then, via an output interface (s), it electrically controls the valves.

La présente invention sera mieux comprise a la lecture de la description détaillée d'un mode de réalisation de ce dispositif adapté a un moteur 4 temps monocylindre équipé.de soupapes électromagnétiques, pris comme exemple non limitatif, et illustré par le dessin annexé, sur lequel la figure représente le schéma fonctionnel du dispositif: la centrale de commande (1) se compose d'une carte imprimee qui supporte un microcalculateur (4), un module de memoire (2) contenant â la fois la cartographie de la distribution et le logiciel de traitement des données. The present invention will be better understood on reading the detailed description of an embodiment of this device adapted to a single-cylinder 4-stroke engine equipped with electromagnetic valves, taken as a non-limiting example, and illustrated by the attached drawing, in which the figure represents the functional diagram of the device: the control unit (1) consists of a printed card which supports a microcomputer (4), a memory module (2) containing both the distribution map and the software of data processing.

Les capteurs optiques (7)(9) placés au niveau d'un disque gradué (8j monté directement ou non sur le vilebrequin (10) du moteur (13) produisent des signaux qui, par l'intermédiaire d'étages d'entrée (5) et (6) (codeurs), sont transformés de manière a pouvoir étre transmis au microcalculateur (4) via un bus de donnees (3) qui permet les échanges d'informations entre les différents organes de la centrale de commande (1);le programme informatique utilisé n'est pas décrit dans la présente demande car la description fonctionnelle du dispositif permet a l'homme de l'art de l'écrire sans difficulté; ce programme a plusieurs fonctions: il traite les signaux précédemment cités dans le but d'obtenir l'information de vitesse; cette information permet au microcalculateur (4) de prélever les données appropriées dans le module de mémoire (2).Le capteur (7) fournissant en permanence la position angulaire du vilebrequin (10), le microcalculateur (4) envoie au moment opportun un signal qui, amplifié par un étage de sortie (14)(15) permet de commander la (les) soupape(s) d'admission (11) et la (les) soupape(s) d'échappement (12). The optical sensors (7) (9) placed at the level of a graduated disc (8j mounted directly or not on the crankshaft (10) of the engine (13) produce signals which, via input stages ( 5) and (6) (encoders), are transformed so as to be able to be transmitted to the microcomputer (4) via a data bus (3) which allows the exchange of information between the various organs of the central control unit (1) ; the computer program used is not described in the present application because the functional description of the device allows a person skilled in the art to write it without difficulty; this program has several functions: it processes the signals previously cited in the purpose of obtaining the speed information; this information allows the microcomputer (4) to take the appropriate data from the memory module (2). The sensor (7) permanently providing the angular position of the crankshaft (10), the microcomputer (4) sends a timely signal which, amplified by r an outlet stage (14) (15) makes it possible to control the inlet valve (s) (11) and the exhaust valve (s) (12).

Dans le dessin proposé, des soupapes électromagnétiques sont représentées; d'autres dispositifs de commande électrique des soupapes peuvent être utilisés comme des dispositifs pneumatiques ou hydrauliques commandés électriquement. In the proposed drawing, electromagnetic valves are shown; other electrical valve control devices can be used as electrically controlled pneumatic or hydraulic devices.

De la même manière, en complément aux deux paramètres essentiels que sont la vitesse de rotation et la référence angulaire du vilebrequin, d'autres paramètres peuvent être utilisés avantageusement: température de l'air, pression atmosphérique, hygrométrie, température du moteur (huile, eau) etc... Cette possibilité implique donc le montage d'autres capteurs spécifiques a ces paramètres; l'utilisation de ceux-ci doit, bien entendu, être prévue dans le logiciel de traitement des données ainsi que dans la détermination de la cartographie. In the same way, in addition to the two essential parameters which are the rotation speed and the angular reference of the crankshaft, other parameters can be used advantageously: air temperature, atmospheric pressure, hygrometry, engine temperature (oil, water) etc ... This possibility therefore involves the mounting of other sensors specific to these parameters; the use of these must, of course, be provided for in the data processing software as well as in determining the mapping.

Le montage de ce dispositif peut être avantageusement effectué sur tous les moteurs å combustion interne. Il a pour avantage de supprimer un certain nombre d'éléments mécaniques (arbres a cames, culbuteurs, poussoirs, pignons de distribution etc ... ). Cela permet d'éliminer, entre autres, une cause du rendement relativement médiocre de ce type de moteurs:l'énergie absorbée par ces éléments. D'autre part, la détermination sur banc d'essais d'une cartographie de distribution appropriée permet l'obtention d'un couple moteur maximum dès les bas régimes jusqu'aulx régimes les plus élevés permis par le moteur cela a pour conséquence l'obtention d'une puissance supérieure ou égale a celle d'un moteur classique quelque soit le régime. The mounting of this device can advantageously be carried out on all internal combustion engines. It has the advantage of eliminating a certain number of mechanical elements (camshafts, rocker arms, tappets, timing gears, etc.). This eliminates, among other things, a cause of the relatively poor performance of this type of engine: the energy absorbed by these elements. On the other hand, the determination on a test bench of an appropriate distribution map allows obtaining a maximum engine torque from low revs up to the highest revs allowed by the engine. obtaining a power greater than or equal to that of a conventional engine whatever the speed.

Quelques procédés de mise en oeuvre de ce dispositif montrent les possibilités d'usage de la présente invention:
- Régulation du régime: certains moteurs ne nécessitent pas de regimes élevés du fait de leur utilisation ou pour des raisons de sécurité: une cartographie de distribution appropriée permet de limiter le régime du moteur.Some methods of implementing this device show the possibilities of using the present invention:
- Speed regulation: certain engines do not require high speeds because of their use or for safety reasons: an appropriate distribution map allows to limit the engine speed.

- Une cartographie évolutive: application au rodage d'un moteur: le rodage d'un moteur nécessite en général une utilisation de celui-ci à un régime limité pendant une certaine période ou sans à-coups d'accélération: le présent dispositif permet d'utiliser une cartographie de distribution adaptée au rodage, puis, après une certaine durée de service mesurée par le microcalculateur, celui-ci prélève les informations utiles dans une autre cartographie appropriée au fonctionnement normal du moteur.Ce changement de cartographie peut également être effectué par le remplacement du module de mémorisation.  - An evolving map: application to running in an engine: running in an engine generally requires using it at a limited speed for a certain period or without jerking acceleration: the present device allows '' use a distribution map suitable for running in, then, after a certain service life measured by the microcomputer, it takes useful information from another map suitable for normal engine operation. This change of map can also be carried out by replacing the memory module.

- Utilisation d'un nombre variable de soupapes pendant le fonctionnement du moteur: le régime du ralenti ne nécessite pas l'utilisation de toutes les soupapes d'admission; le dispositif permet d'en commander le nombre approprié au ralenti, puis, en fonction des besoins, d'en commander la totalité. - Use of a variable number of valves during engine operation: the idling speed does not require the use of all the intake valves; the device makes it possible to control the appropriate number of them in slow motion, then, as required, to control all of them.

- La suppression des éléments mécaniques permet une implantation optimale des soupapes dans la culasse qui peut prendre une forme hémisphérique, ce qui permet une disposition radiale des soupapes dont l'avantage est l'obtention d'une circulation et d'une combustion optimales des gaz. - The elimination of mechanical elements allows optimal implantation of the valves in the cylinder head which can take a hemispherical shape, which allows a radial arrangement of the valves whose advantage is the obtaining of an optimal circulation and combustion of the gases .

- Le ralenti du moteur et son accélération sont déterminés par la modulation du temps d'ouverture des soupapes. - The engine idling speed and its acceleration are determined by the modulation of the valve opening time.

- La cartographie de distribution pour un moteur peut étre mémorisée et utilisée pour des moteurs du même type sans qu'il soit nécessaire d'effectuer des essais spécifiques pour chaque moteur: il suffit de recopier le contenu du module de mémorisation selon les techniques en vigueur. - The distribution mapping for an engine can be stored and used for engines of the same type without it being necessary to carry out specific tests for each engine: it suffices to copy the content of the storage module according to the techniques in force .

- Un frein-moteur puissant est obtenu par une grade
ouverture des soupapes d'admission et une ouverture limitée des
soupapes d'échappement: la distribution normale du moteur est
modifiée dans ce but lorsque le microcalculateur reçoit, par
l'intermédiaire d un interrupteur manuel ou non, l'information
précisant le besoin de frein-moteur.- A powerful engine brake is obtained by a grade
opening of the intake valves and a limited opening of the
exhaust valves: normal engine distribution is
modified for this purpose when the microcomputer receives, by
via a manual switch or not, the information
specifying the need for an engine brake.

- Le dispositif est tel qu'un programme informatique
approprié permet la rotation du moteur dans un sens ou dans
l'autre suivant les besoins de l'utilisateur. Le besoin de
changement de sens est précisé au microcalculateur par un
signal émis par un interrupteur.- The device is like a computer program
suitable allows rotation of the motor in one direction or in
the other according to the needs of the user. The need to
change of direction is specified in the microcomputer by a
signal emitted by a switch.

- Les soupapes peuvent être commandées indépendamment les
unes des autres, c'est a dire que leur mouvement n'est pas
obligatoirement identique: le dispositif est alors doté
d'autant d'étages de sortie que de soupapes.- The valves can be controlled independently
of each other, that is to say that their movement is not
must be identical: the device is then equipped
as many output stages as there are valves.

- Les possibilités multiples de mise en oeuvre du
dispositif sont fondées sur le fait que, d'une part une
cartographie de la distribution est déterminée en fonction du
régime du moteur et d'autre part que le microcalculateur est
programmable, donc peut exécuter des instructions traitant des
informations provenant de différents capteurs et interrupteurs. - The multiple possibilities of implementing the
device are based on the fact that on the one hand a
distribution mapping is determined based on the
engine speed and secondly that the microcomputer is
programmable, so can execute instructions dealing with
information from different sensors and switches.

Claims (8)

REVENDICATIONS 1) Dispositif de commande des soupapes de moteur thermique caractérisé par le fait qu'il comporte une centrale électronique de commande des soupapes. 1) Device for controlling the combustion engine valves, characterized in that it comprises an electronic valve control unit. 2) Dispositif selon la revendication 1 caractérisé par le fait que la centrale (1) comporte un microcalculateur (4). 2) Device according to claim 1 characterized in that the central (1) comprises a microcomputer (4). 3) Dispositif selon les revendications i et 2 caractérisé par le fait qu'il comporte au moins un capteur (7)(9) reliés au microcalculateur (4) via des interfaces (étages de sortie) (4)(5) permettant de déterminer directement ou par calcul, comme paramètres principaux, la vitesse de rotation et la position angulaire du vilebrequin. 3) Device according to claims i and 2 characterized in that it comprises at least one sensor (7) (9) connected to the microcomputer (4) via interfaces (output stages) (4) (5) making it possible to determine directly or by calculation, as main parameters, the rotation speed and the angular position of the crankshaft. 4) Dispositif selon les revendications 1 et 2 caractérisé par le fait qu'il comporte au moins un capteur permettant de déterminer des paramètres autres que ceux cités dans la revendication 3, telles la température de l'air, la pression atmosphérique, l'hygrométrie, la température du moteur. 4) Device according to claims 1 and 2 characterized in that it comprises at least one sensor for determining parameters other than those mentioned in claim 3, such as air temperature, atmospheric pressure, hygrometry , the engine temperature. 5) Dispositif selon la revendication 1 caractérisé par le fait qu'il comporte un module de mémorisation (2) des informations caractérisant la cartographie de la distribution. 5) Device according to claim 1 characterized in that it comprises a storage module (2) of information characterizing the mapping of the distribution. 6) Dispositif selon les revendications précédentes caractérisé par le fait que la centrale (1) comporte un (des) étage(s) de sortie (14)(15). Ce(s) étage(s) envoie(nt) un signal électrique selon les angles de distribution déterminés vers un dispositif actionnant les soupapes (11)(12). 6) Device according to the preceding claims, characterized in that the central unit (1) comprises one (or more) output stage (s) (14) (15). This (s) stage (s) sends (s) an electrical signal according to the distribution angles determined towards a device actuating the valves (11) (12). 7) Procédé de mise en oeuvre du dispositif décrit dans les revendications précédentes caractérisé par le fait que, & partir des informations issues du (des) capteurs (7)(9) et du module de mémorisation (2), le microcalculateur (4) détermine les angles de distribution appropriées au régime du moteur. 7) Method for implementing the device described in the preceding claims, characterized in that, from information coming from the sensor (s) (7) (9) and from the storage module (2), the microcomputer (4) determines the distribution angles appropriate to the engine speed. 8) Procédé selon la revendication 5 caractérise par le fait que les informations caractérisant la cartographie de la distribution sont déterminées sur un banc dtessais de moteur, puis mémorisées dans le module (2) selon les techniques en vigueur.  8) Method according to claim 5 characterized in that the information characterizing the distribution mapping are determined on an engine test bench, then stored in the module (2) according to the techniques in force.
FR8708324A 1987-06-12 1987-06-12 Internal combustion engine electronic valve-control device and methods of implementation Withdrawn FR2616481A1 (en)

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FR8708324A FR2616481A1 (en) 1987-06-12 1987-06-12 Internal combustion engine electronic valve-control device and methods of implementation

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EP0376561A1 (en) * 1988-12-28 1990-07-04 Isuzu Motors Limited Valve control system for internal combustion engine
US4957074A (en) * 1989-11-27 1990-09-18 Siemens Automotive L.P. Closed loop electric valve control for I. C. engine
FR2656063A1 (en) * 1989-12-20 1991-06-21 Savard Patrick Intake valve with flexible strips, controlled electromagnetically and electronically, for a two-stroke engine
US5111779A (en) * 1988-12-28 1992-05-12 Isuzu Ceramics Research Institute Co., Ltd. Electromagnetic valve actuating system
US5115772A (en) * 1988-12-28 1992-05-26 Isuzu Ceramics Research Institute Co., Ltd. System for actuating valve in stepped movement
US5119772A (en) * 1988-12-28 1992-06-09 Isuzu Ceramics Research Institute Co., Ltd. Electromagnetic valve actuating system
US5125370A (en) * 1988-10-20 1992-06-30 Isuzu Ceramics Research Institute Co., Ltd. Control system for electromagnetically driven valve
WO1993024738A1 (en) * 1992-06-01 1993-12-09 Caterpillar Inc. Engine braking utilizing unit valve actuation
US5327856A (en) * 1992-12-22 1994-07-12 General Motors Corporation Method and apparatus for electrically driving engine valves
WO1996011326A1 (en) * 1994-10-07 1996-04-18 Diesel Engine Retarders, Inc. Electronic controls for compression release engine brakes
US5526784A (en) 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
US5540201A (en) 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
EP0724067A1 (en) * 1995-01-27 1996-07-31 Honda Giken Kogyo Kabushiki Kaisha Control system for internal combustion engines
US5647318A (en) 1994-07-29 1997-07-15 Caterpillar Inc. Engine compression braking apparatus and method
WO1999032764A1 (en) * 1997-12-18 1999-07-01 Temic Telefunken Microelectronic Gmbh Method for controlling an internal combustion engine
FR2779481A1 (en) * 1998-06-06 1999-12-10 Daimler Chrysler Ag PISTON COMBUSTION ENGINE WITH TURN-OVER CONTROL
FR2795133A1 (en) * 1999-06-18 2000-12-22 Renault Valves opening and closing pattern for internal combustion engine includes compression phase in order to create engine's brake effect
EP0931211B1 (en) * 1997-08-05 2003-06-04 Robert Bosch Gmbh Internal combustion engine control according to running time
WO2008037889A1 (en) * 2006-09-25 2008-04-03 Valeo Systemes De Controle Moteur Method for the individual control of a set of valve actuators by the ecu
JP2010504461A (en) * 2006-09-25 2010-02-12 ヴァレオ システム ドゥ コントロール モトゥール Combustion engine control system with valve

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US5119772A (en) * 1988-12-28 1992-06-09 Isuzu Ceramics Research Institute Co., Ltd. Electromagnetic valve actuating system
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US5598814A (en) * 1992-12-22 1997-02-04 General Motors Corporation Method and apparatus for electrically driving engine valves
US5327856A (en) * 1992-12-22 1994-07-12 General Motors Corporation Method and apparatus for electrically driving engine valves
US5494007A (en) * 1992-12-22 1996-02-27 General Motors Corporation Method and apparatus for electrically driving engine valves
US5540201A (en) 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
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WO1996011326A1 (en) * 1994-10-07 1996-04-18 Diesel Engine Retarders, Inc. Electronic controls for compression release engine brakes
US5718199A (en) * 1994-10-07 1998-02-17 Diesel Engine Retarders, Inc. Electronic controls for compression release engine brakes
EP0724067A1 (en) * 1995-01-27 1996-07-31 Honda Giken Kogyo Kabushiki Kaisha Control system for internal combustion engines
US5752478A (en) * 1995-01-27 1998-05-19 Honda Giken Kogyo K.K. (Honda Motor Co., Ltd. In English) Control system for internal combustion engines
US5765514A (en) * 1995-01-27 1998-06-16 Honda Giken Kogyo K.K. Control system for internal combuston engines
EP0931211B1 (en) * 1997-08-05 2003-06-04 Robert Bosch Gmbh Internal combustion engine control according to running time
WO1999032764A1 (en) * 1997-12-18 1999-07-01 Temic Telefunken Microelectronic Gmbh Method for controlling an internal combustion engine
US6278932B1 (en) 1997-12-18 2001-08-21 Temic Telefunken Microelectronic Gmbh Method for controlling an internal combustion engine
US6237546B1 (en) 1998-06-06 2001-05-29 Daimlerchrysler Ag Reversible internal combustion engine
FR2779481A1 (en) * 1998-06-06 1999-12-10 Daimler Chrysler Ag PISTON COMBUSTION ENGINE WITH TURN-OVER CONTROL
FR2795133A1 (en) * 1999-06-18 2000-12-22 Renault Valves opening and closing pattern for internal combustion engine includes compression phase in order to create engine's brake effect
WO2000079107A1 (en) * 1999-06-18 2000-12-28 Renault Method for controlling an internal combustion engine in order to obtain an engine braking effect
WO2008037889A1 (en) * 2006-09-25 2008-04-03 Valeo Systemes De Controle Moteur Method for the individual control of a set of valve actuators by the ecu
JP2010504461A (en) * 2006-09-25 2010-02-12 ヴァレオ システム ドゥ コントロール モトゥール Combustion engine control system with valve
US8116964B2 (en) 2006-09-25 2012-02-14 Valeo Systemes De Controle Moteur Method for the individual control of a set of valve actuators by the ECU

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