WO2008037889A1 - Method for the individual control of a set of valve actuators by the ecu - Google Patents
Method for the individual control of a set of valve actuators by the ecu Download PDFInfo
- Publication number
- WO2008037889A1 WO2008037889A1 PCT/FR2007/001558 FR2007001558W WO2008037889A1 WO 2008037889 A1 WO2008037889 A1 WO 2008037889A1 FR 2007001558 W FR2007001558 W FR 2007001558W WO 2008037889 A1 WO2008037889 A1 WO 2008037889A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control unit
- engine
- actuator
- actuators
- valve
- Prior art date
Links
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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
Definitions
- the present invention relates to a man- agement system of an internal combustion engine 'in such valves a multicylinder four-stroke engine of a motor vehicle.
- Such a management system comprises an engine control unit (or ECU for "Engine Control Unit”) connected via a serial bus to a valve control unit (or VCU for "Valve Control Unit”) itself connected to electromagnetic valve actuators.
- the engine control unit is arranged to define, in particular as a function of engine speed and load, valve control instructions which it transmits on the serial bus in a single frame with information relating to the operation of the engine. engine such as the engine speed and its temperature.
- the control instructions include valve movement modes, opening angles and closing angles thereof.
- the valve control unit receives this frame and develops, from the control instructions contained in the frame, valve control instructions that it transmits individually to each valve actuator.
- the architecture of this system makes it difficult for manufacturers to adapt to different types of engine, especially when the number of cylinders is different from one engine to another. This in fact involves reprogramming the engine control unit and changing the valve control unit for a model adapted to the number of actuators to control. In addition, the valve control unit sends back to the engine control unit a single frame containing, on the one hand, information as to whether the command instructions have actually been applied or not and, on the other hand, information relating to the operation of the valve control unit. With this architecture of the management system, it is difficult to trace individualized information on the operation of the actuators.
- An object of the invention is to provide a system having a relatively good flexibility allowing its adaptation to different engine configurations or different steering methods.
- a management system of a valve engine comprising an engine control unit and a plurality of valve actuators, wherein the engine control unit is connected to a communication bus and the actuators are distributed in at least two assemblies each provided with a connection interface to the communication bus, the engine control unit being arranged to define control commands of the actuators and to transmit on the bus to destination of this set an individualized frame including the steering instructions of 1 'set concerned.
- the actuators are divided into several sets directly connected to the communication bus and the engine control unit transmits directly to these sets the steering instructions.
- the distribution is functional (that is to say preferably logical within the control unit) and is not related to the physical structure of the management system.
- the thermal engine having several cylinders each having at least one valve associated with a valve actuator, each set corresponds to a cylinder.
- each set corresponds to a cylinder.
- the engine control unit which usually directly controls the injector and the spark plug (in spark ignition engines) associated with each cylinder, also pilot here the actuating assembly of this cylinder.
- each actuator is arranged to transmit, in the bus to the engine control unit, a frame comprising a value of an operating parameter of the actuator.
- the management system in accordance with the invention comprises a motor control unit 1 connected to a communication bus, here a serial bus 2, to which actuators 3 of FIG. valves.
- the control unit 1 comprises, in a manner known per se, a calculator associated with a memory comprising mapping data of the opening and closing angles of the valves as a function, in particular, of the speed and the engine load, the modes of movement of the valves (switching or ballistics) ...
- the engine control unit is also connected to detection devices of the engine speed, the engine load, temperatures ... and to other components of the engine such as injectors, spark plugs, cooling system ...
- the bus 2 is here a CAN bus type (for "Controller Area Network")
- the actuators 3 comprise in known manner a control circuit connected to a power circuit itself connected to attraction coil of an organ of one actuation of the valves to two extreme positions corresponding to the open position respectively of the valve and the closed position of the valve.
- Each actuator 3 is provided with a connection interface 4 to the bus 2 allowing the control circuit of the actuator to receive frames sent to it by the engine control unit 1 and to return frames to the control unit. motor control 1.
- Each actuator 3 associated with a connection interface 4 constitutes an assembly with which the motor control unit 1 communicates.
- the engine control unit 1 is thus arranged to transmit to each actuator 3 frames having actuating instructions of the actuator 3 on two crankshaft turns (these instructions include the opening and closing angles of the valves, the mode of movement %) and information on engine operating parameters such as engine speed, coolant temperature, etc.
- the assembly formed by the control circuit of the actuator 3 and the connection interface 4 is arranged to receive a frame transmitted for it by the engine control unit 1, to extract the frame the control instructions and control the power circuit of the actuator in accordance with the received piloting instructions and to send back to the engine control unit 1 a frame comprising actuator diagnostic information such as the angles of the actuator. opening and closing actually applied, the temperature of the actuator, the voltage within the actuator ... and other information of this type which may in particular reveal a malfunction for example of the actuator.
- the engine control unit 1 analyzes the information received in particular to verify that one of them is not indicative of a failure likely ultimately cause a general malfunction of the motor. If necessary, the engine control unit 1 may decide to stop the faulty actuator.
- the actuators are assigned to groups and that, when an actuator of a group is defective, the control unit stops all the actuators of the group. It goes without saying that the fewer the groups will include actuators, the less their conviction will be penalizing for the operation of the engine.
- the actuators are operably or logically grouped within the engine control unit 1 per cylinder.
- Each frame sent by the engine control unit 1 thus contains steering instructions and information concerning the actuator or the actuators of a cylinder.
- the engine control unit When one of the actuators of a cylinder fails, the engine control unit no longer sends frames to the actuator (s) of this cylinder. dre.
- the heat engine having at least two cylinders may nevertheless continue to operate at least to allow the vehicle to reach the place where it will be repaired.
- the grouping by cylinder also facilitates the adaptation of the management system to engines with different numbers of cylinders.
- control assemblies comprising a single actuator
- such a set may include two or more actuators, it being understood that it is necessary that there be at least two sets .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/441,850 US8116964B2 (en) | 2006-09-25 | 2007-09-25 | Method for the individual control of a set of valve actuators by the ECU |
EP07848281.7A EP2069613B1 (en) | 2006-09-25 | 2007-09-25 | Method for the individual control of a set of valve actuators by the ecu |
JP2009528760A JP5363323B2 (en) | 2006-09-25 | 2007-09-25 | Combustion engine control system with valve |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0608374A FR2906298B1 (en) | 2006-09-25 | 2006-09-25 | FAULT DETECTION VALVE CONTROL SYSTEM |
FR0608374 | 2006-09-25 | ||
PCT/FR2007/001521 WO2008037871A2 (en) | 2006-09-25 | 2007-09-19 | Valve control system with malfunction detection |
FRPCT/FR2007/001521 | 2007-09-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008037889A1 true WO2008037889A1 (en) | 2008-04-03 |
Family
ID=39144590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2007/001558 WO2008037889A1 (en) | 2006-09-25 | 2007-09-25 | Method for the individual control of a set of valve actuators by the ecu |
Country Status (1)
Country | Link |
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WO (1) | WO2008037889A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010012870A1 (en) * | 2008-07-30 | 2010-02-04 | Valeo Systemes De Controle Moteur | Control unit for one or more electromagnetic actuators of a heat engine valve, and different assemblies of such control units and such electromagnetic actuators |
FR2983369A1 (en) * | 2011-11-28 | 2013-05-31 | Valeo Sys Controle Moteur Sas | Control device for linear actuator, has control unit receiving instructions for controlling actuator, and driving control unit and control unit that are physically remote from each other |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2616481A1 (en) * | 1987-06-12 | 1988-12-16 | Hamon Francois | Internal combustion engine electronic valve-control device and methods of implementation |
US6278932B1 (en) * | 1997-12-18 | 2001-08-21 | Temic Telefunken Microelectronic Gmbh | Method for controlling an internal combustion engine |
US20020059908A1 (en) * | 1999-04-21 | 2002-05-23 | Volker Eichenseher | Control system and method for operating an internal combustion engine |
JP2002221012A (en) * | 2001-01-23 | 2002-08-09 | Auto Network Gijutsu Kenkyusho:Kk | Engine module |
-
2007
- 2007-09-25 WO PCT/FR2007/001558 patent/WO2008037889A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2616481A1 (en) * | 1987-06-12 | 1988-12-16 | Hamon Francois | Internal combustion engine electronic valve-control device and methods of implementation |
US6278932B1 (en) * | 1997-12-18 | 2001-08-21 | Temic Telefunken Microelectronic Gmbh | Method for controlling an internal combustion engine |
US20020059908A1 (en) * | 1999-04-21 | 2002-05-23 | Volker Eichenseher | Control system and method for operating an internal combustion engine |
JP2002221012A (en) * | 2001-01-23 | 2002-08-09 | Auto Network Gijutsu Kenkyusho:Kk | Engine module |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010012870A1 (en) * | 2008-07-30 | 2010-02-04 | Valeo Systemes De Controle Moteur | Control unit for one or more electromagnetic actuators of a heat engine valve, and different assemblies of such control units and such electromagnetic actuators |
FR2983369A1 (en) * | 2011-11-28 | 2013-05-31 | Valeo Sys Controle Moteur Sas | Control device for linear actuator, has control unit receiving instructions for controlling actuator, and driving control unit and control unit that are physically remote from each other |
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