Controlling a clutch between an engine and an electric machine in a hybrid vehicle

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Controlling a clutch between an engine and an electric machine in a hybrid vehicle

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GIBSON ALEXANDER O'CONNOR / NEDOREZOV FELIX / WANG XIAOYONG / SHELTON MATTHEW JOHN

A parallel hybrid vehicle includes an engine and a motor separated along a driveshaft by a clutch. The motor can operate (either alone or in combination with the engine) to provide positive drive torque to the wheels. The motor can also act as a generator and provide negative torque when converting mechanical energy from the driveshaft into mechanical energy to be stored in a battery. The clutch selectively couples the motor to the engine. Torque and its effects on the clutch can vary dramatically when the motor changes from providing positive and negative torque, and vice versa, while the engine is running. At least one controller in the vehicle is programmed to, while the engine is running, initiate an increase in pressure at the clutch in response to an anticipated change in torque provided by the motor from positive to negative or from negative to positive.

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Title :

Controlling a clutch between an engine and an electric machine in a hybrid vehicle

Contributors:

GIBSON ALEXANDER O'CONNOR (author) / NEDOREZOV FELIX (author) / WANG XIAOYONG (author) / SHELTON MATTHEW JOHN (author)

Publication date :

2017-05-23

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen