Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Indication or control of braking – acceleration – or deceleration
Reexamination Certificate
2006-11-28
2006-11-28
Jeanglaude, Gertrude A. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Indication or control of braking, acceleration, or deceleration
C701S069000, C701S083000, C701S084000, C180S197000
Reexamination Certificate
active
07142970
ABSTRACT:
In a vehicular brake force control apparatus, an engine brake force Feb is calculated; a road surface friction coefficient μ and a rear wheel degree of grip εr is calculated; and a threshold value Ke is calculated such that the threshold value Ke increases as the road surface friction coefficient μ becomes smaller. When the rear wheel degree of grip εr is smaller than the threshold value Ke, it is determined that vehicle behavior of a vehicle is liable to become unstable when the engine brake force Feb acts. In this case, a sum of the engine brake force Feb and a target friction brake force Fbv based upon a steering operation amount of a driver is distributed to each wheel in accordance with a distribution that stabilizes the vehicle behavior of the vehicle. Based on this distribution result, a friction brake force and an output torque of the engine are controlled.
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Asano Kenji
Inagaki Shoji
Jeanglaude Gertrude A.
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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