Control apparatus for hybrid vehicle
First Claim
1. A control apparatus for a hybrid vehicle having an engine and an electric motor connected to an engine output shaft of the engine mounted on the vehicle, wherein the control apparatus performs an automatic start-up/stop control of said engine, starts said engine by a starter motor in a start-up of said engine by operation of a key, and always assists using said electric motor, said control apparatus including a controller that (1) controls to drive said electric motor by an engine activation signal so as to start up said engine by said electric motor only at restarting-up of said engine when a start-up condition is satisfied during operation of the automatic start-up/stop control of said engine, that (2) controls to drive said starter motor and said electric motor by outputting an engine activation signal so as to always assist using said electric motor when starting up using said starter motor at restarting-up of said engine when a start-up condition is not satisfied during operation of the automatic start-up/stop control of said engine, and that (3) sets a motor output value for said electric motor at a value exceeding a rated performance when said engine restarts up using only said electric motor.
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Accused Products
Abstract
A control apparatus utilizes an electric motor to initially start-up an engine. In an engine restart under certain conditions, the control apparatus sets a motor output value for the electric motor to a value exceeding the rated performance. Thus, when starting up the engine, the control apparatus makes up for a shortage of power by executing overload driving of the motor for a short time period. When certain conditions are not met, the control apparatus operates the electric motor in combination with a starter motor to restart the engine. The electric motor is located between the engine and a transmission.
90 Citations
12 Claims
- 1. A control apparatus for a hybrid vehicle having an engine and an electric motor connected to an engine output shaft of the engine mounted on the vehicle, wherein the control apparatus performs an automatic start-up/stop control of said engine, starts said engine by a starter motor in a start-up of said engine by operation of a key, and always assists using said electric motor, said control apparatus including a controller that (1) controls to drive said electric motor by an engine activation signal so as to start up said engine by said electric motor only at restarting-up of said engine when a start-up condition is satisfied during operation of the automatic start-up/stop control of said engine, that (2) controls to drive said starter motor and said electric motor by outputting an engine activation signal so as to always assist using said electric motor when starting up using said starter motor at restarting-up of said engine when a start-up condition is not satisfied during operation of the automatic start-up/stop control of said engine, and that (3) sets a motor output value for said electric motor at a value exceeding a rated performance when said engine restarts up using only said electric motor.
- 7. A control apparatus for a hybrid vehicle having an engine and an electric motor being connected to an engine output shaft of the engine mounted on the vehicle, wherein the control apparatus performs an automatic start-up/stop control of said engine, and assists start-up using said electric motor, said engine being started by a starter motor at start-up of said engine by operation of a key, wherein said control apparatus includes a controller that controls said electric motor, which said electric motor is located between said engine and a transmission, said controller controlling said electric motor to execute overload driving of said electric motor at a start-up of said engine driven only by said electric motor.
Specification