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US 6,979,280 B2Granted
Control apparatus and control method for vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKoji Oshima, Hiromichi Kimura
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AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKoji Oshima, Hiromichi Kimura
Estimating the term…
In a control apparatus for a vehicle, when a coast downshifting is performed in response to a downshifting command from a vehicle operator during braking operation under the fuel cut control, the braking force of the wheel brake is increased so as to increase the deceleration. This makes it possible to achieve a predetermined deceleration with a good response to the deceleration request of the vehicle operator represented by the downshifting command. The control apparatus is structured to decrease the braking force of the wheel brake such that the increase in the engine braking force is offset by the inertia caused by the rise in the engine speed resulting from downshifting upon the coast downshifting due to the vehicle speed increase. The control apparatus for the vehicle, thus, reduces the shock caused by the sharp increase in the engine braking force.
A control apparatus for a vehicle comprising:
A control method for a vehicle including an engine that generates power through combustion of fuel, an automatic transmission adapted to transmit a reverse input from a driving wheel to the engine and automatically performs a shifting to a speed selected among a plurality of forward speeds each having a different speed ratio, a brake control system that electrically controls a braking force of a wheel brake, the method comprising causing the brake control system to control the braking force of the wheel brake such that a predetermined deceleration is established upon a coast downshifting of the automatic transmission during running of the vehicle in a coast state where a throttle valve of the engine is substantially fully closed.
Dependencies are inferred from the claim text.