Control apparatus and method for hybrid vehicle

摘要

A control apparatus and method for controlling a hybrid vehicle is arranged to prevent shock and to minimize adverse influence on lag and fuel consumption when one of a start/stop control of an engine and a shift control of an automatic transmission is requested while the other control is occurring. The control apparatus includes an engine, a motor/generator, a first clutch, an automatic transmission, an integrated controller, an AT controller and an engine/transmission coordinate controlling section. When a second control request is generated during the first control, the engine/transmission coordinate controlling section starts the second control at a request timing when a condition does not exist such that a shock does not exceed an acceptable level and starts the second control at a later timing when the condition exists such that the shock would exceed the acceptable level if the second control is started at the request timing.

主权项

1. A control apparatus for controlling a hybrid vehicle, comprising:
an engine; a motor provided in a drive system extending from the engine to a driving wheel, the motor arranged to start the engine and drive the driving wheel; a mode selecting device provided between the engine and the motor, the mode selecting device arranged to change over a vehicle drive mode between a hybrid drive mode using the engine and the motor as a drive source and an electric drive mode using the motor as the drive source; an automatic transmission disposed between the motor and the driving wheel, the automatic transmission arranged to provide a plurality of speed ratios; an integrated controller that performs an engine start/stop control, the engine start/stop control being a start control of the engine in response to a start request at the time of mode changeover to the hybrid drive mode or a stop control of the engine in response to a stop request at the time of the mode changeover to the electric drive mode; and an automatic transmission controller that performs a shift control of changing a gear position of the automatic transmission from a current position to a request position in response to a shift request during travel of the vehicle; and wherein a first control is one of the engine start/stop control and the shift control and a second control is another of the engine start/stop control and the shift control, the integrated controller is configured to:
determine whether a condition exists such that a shock will exceed an acceptable level if a second control is started at a second control request when the second control request is generated during a performance period of a first control;forbid start of the second control at the second control request when the condition exists;repeatedly determine whether the condition continues to exist after forbidding start of the second control and during the performance period of the first control; andstart the second control at a permitting timing after the second control request and during the performance period of the first control when the condition no longer exists.