Control apparatus and method for hybrid vehicle

摘要

In control apparatus and method for a hybrid vehicle, a line pressure control valve disposed at a downstream side of each of mechanical oil pump (M-O/P) and electrically driven oil pump (S-O/P) to decrease a supplied hydraulic pressure from at least one of the mechanical oil pump and the electrically driven oil pump by opening drain ports thereof in accordance with a control valve command value is provided, the control valve command value is set by adding a predetermined additive correction quantity to a required line pressure set in accordance with operating states of a hydraulic pressure clutch (CL1) and a transmission and the drain ports of the line pressure control valve are controlled to a closure side, during an actuation of the electrically driven oil pump.

主权项

1. A control apparatus for a hybrid vehicle, comprising:
an engine; a motor; a hydraulic pressure clutch interposed between the engine and the motor to perform an engagement thereof and an opening thereof; a transmission interposed between the motor and driving wheels to perform a change in at least one of a gear shift stage and a transmission gear ratio according to a hydraulic pressure; a mechanical oil pump actuated by at least one of the engine and the motor to supply the hydraulic pressure; an electrically driven oil pump actuated by a sub motor to supply hydraulic pressure; a line pressure control valve disposed at a downstream side of each of the mechanical oil pump and the electrically driven oil pump to decrease the supplied hydraulic pressure from at least one of the mechanical oil pump and the electrically driven oil pump by opening drain ports thereof in accordance with a control valve command value; and an AT controller having:
a sub motor control section configured to set a sub motor command value while the motor is operating on a basis of a required line pressure, the required line pressure being calculated from a clutch holding required pressure and a lowest line pressure at which a first clutch of the hydraulic pressure clutch opens, anda line pressure control section configured to:
set the control valve command value by adding, to the required line pressure, a predetermined additive correction quantity so as to counteract mechanical dispersion of the line pressure control valve, and control the drain ports of the line pressure control valve to a closure side during actuation of the electrically driven oil pump.