Abstract:
Die Erfindung betrifft ein Verfahren zur Regelung einer Brennkraftmaschine (10) im Leerlauf mit folgenden Schritten: - Messung der Ist-Leerlaufdrehzahl, - Vergleich der Ist-Leerlaufdrehzahl mit einer Soll-Leerlaufdrehzahl, - Bestimmung eines Korrekturdrehmomentes abhängig von einem Ist-Leerlaufdrehzahlgradienten bei Abweichung der Ist-Leerlaufdrehzahl von der Soll-Leerlaufdrehzahl um mehr als einen vorbestimmten Wert, - Addition des Korrekturdrehmomentes zu der aktuellen Motormomentanforderung der Brennkraftmaschine (10). Der Vorteil der Erfindung besteht darin, dass die Regelung der Leerlaufdrehzahl auch den Ist-Leerlaufdrehzahlgradienten berücksichtigt und das Korrekturdrehmoment direkt zu der Motormomentanforderung addiert wird, so dass insgesamt eine sehr schnelle Regelcharakteristik entsteht.
Abstract:
The present invention relates to an internal combustion engine, and more particularly, to an internal combustion having improved performance by promoting mixing of fuel and air using a fuel mixing means installed at an intake port to improve the flow property of the mixture introduced into a combustion chamber. In an internal combustion engine according to the present invention, a fuel mixing means is installed at an intake port for use in supplying a mixture of fuel and air into a combustion chamber. The fuel mixing means is provided with a stream-disturbing body having a plurality of vanes for disturbing a stream passing through the intake port. The stream-disturbing body is installed rotatably in the intake port to generate a vortex or turbulence so that fuel and air are mixed uniformly and then supplied into the combustion chamber.
Abstract:
A control device for cylinder reducing operation of a multi-cylinder engine for a vehicle controls the number of working cylinders in the engine more appropriately for fuel economy while ensuring the operational stability of the engine and comfortable drivability of the vehicle. The control device comprises a detector detecting engine output torque and judges if cylinder reducing operation is to be executed while referring to the engine output torque. Because of the detection of engine output torque, cylinder reducing operation will be executed as long as torque requested of the engine is available from the reduced number of working cylinders, thereby ensuring the generation of torque required in operating the engine while saving fuel as much as possible. Through a learning process, criteria for the judgment of execution of cylinder reducing operation are modified to be adapted for any variation of engine output performances.
Abstract:
Es werden ein Verfahren und eine Vorrichtung sowie ein Computerprogramm zur Steuerung eines Verbrennungsmotors vorgeschlagen, wobei im Rahmen der Berechnung von Istgrössen und/oder Stellgrössen ein Momentenmodell Verwendung findet. Dabei wird im Rahmen der Momentenmodellberechnung der Verbrennungsschwerpunkt berücksichtigt, welcher den Winkel darstellt, bei dem ein gewisser Anteil der Verbrennungsenergie umgesetzt ist.
Abstract:
A compression ignition internal combustion engine, comprising a combustion chamber (16) allowing air and fuel supplied therein, an intake valve (19a) opening and closing a passage between an intake port (6) communicating with the combustion chamber and the combustion chamber, and an exhaust valve (19b) opening and closing a passage between an exhaust port (14) communicating with the combustion chamber and the combustion chamber, wherein the temperature and pressure inside the combustion chamber are increased by the compressive operation of a piston after the intake valve (19a) is closed so as to self−ignite air−fuel mixture, a fuel injection nozzle (11) injects pressurized air, forming an ignition trigger factor, directly into the combustion chamber so that the air−fuel mixture during the expansion stroke of the piston comes into an ignitable state, and an ECU1 controls the injection timing of the pressurized air according to an ignition timing, whereby the internal combustion engine can be controlled to an appropriate self−ignition timing in the wide engine operating range with respect to a load and a speed without changing the shape of the combustion chamber remarkably.
Abstract:
A controller of a fuel-advanced type multiple cylinder direct-injection internal combustion engine capable of providing an air volume control means excellent in responsiveness and convergence, comprising a means for calculating a target throttle opening based on the operating conditions, the target throttle opening calculation means further comprising a first calculation means for obtaining the target throttle opening by a feedback control based on the operating conditions including an intake air volume, a second calculation means for obtaining the target throttle opening by a feedforward control based on the operating conditions, and a third calculation means for obtaining the target throttle opening based on both values of the target throttle opening obtained by the first calculation means and the second calculation means.
Abstract:
Wird während einer festgelegten Wartezeit nach einem Öffnen des Antriebsstrangs weder ein Antriebsmoment noch ein Bremsmoment vom Verbrennungsmotor (1) angefordert, so wird nach Ablauf der Wartezeit der Verbrennungsmotor (1) abgeschaltet. Dabei wird die Wartezeit zwischen dem Öffnen des Antriebsstrangs und dem Abschalten des Verbrennungsmotors (1) abhängig von der aktuellen Betriebssituation des Kraftfahrzeugs festgelegt.
Abstract:
A method and internal combustion engine (10) operable in a premixed charge compression ignition mode, comprising a combustion chamber (16), an intake system (18) for delivering air intake, a mixing device that mixes a first fuel (23) with the intake air to provide a premixed charge of air and the first fuel (23), a direct fuel injector (26) adapted to directly inject a second fuel (27) into the combustion chamber (16), and a control system (30) adapted to control the direct fuel injector (26) in a manner to provide a post-ignition injection where the second fuel (27) is directly injected into the combustion chamber (16) after onset of ignition of the premixed charge in the combustion chamber (16). The second fuel (27) is preferably injected into the combustion chamber (16) during combustion of the premixed charge and/or shortly after combustion of the premixed charge in the combustion chamber (16).
Abstract:
A method and device for the control of an internal combustion engine are disclosed. Starting with a first parameter which characterises the injection amount and a second parameter which characterises the angular position at which the injection amount is determined, a third parameter which characterises the torque produced by the engine is determined. Further, starting with a fourth parameter which characterises the driver's wish, a fifth parameter which characterises the torque desired by the driver is determined. The third and fifth parameters are evaluated for error monitoring.