Vehicle motion control apparatus
First Claim
1. A vehicle motion control apparatus comprising:
- wheel brake cylinders operatively associated with wheels of a vehicle, respectively;
a master cylinder connected to said wheel brake cylinders through a dual hydraulic circuit with a pair of wheel brake cylinders included in each hydraulic circuit, said master cylinder discharging a hydraulic braking pressure into each hydraulic circuit in response to operation of a brake pedal;
hydraulic pressure regulating means disposed between said master cylinder and said pair of wheel brake cylinders, for regulating the hydraulic braking pressure supplied into each of said pair of wheel brake cylinders;
vehicle state monitor means for monitoring state variable of said vehicle;
desired value setting means for setting a desired value provided for a wheel brake cylinder operatively associated with a wheel to be controlled, out of said pair of wheel brake cylinders included in each hydraulic circuit, said desired value setting means setting the desired value on the basis of the state variable monitored by said vehicle state monitor means;
desired value modifying means for modifying the desired value set by said desired value setting means to provide a modified desired value for at least one wheel brake cylinder out of said pair of wheel brake cylinders including said wheel brake cylinder operatively associated with said wheel to be controlled, at least in response to operation of said brake pedal; and
control means for controlling said pressure regulating means in response to a result of comparison between the desired value set by said desired value setting means and the state variable monitored by said vehicle state monitor means, to regulate the hydraulic braking pressure in said wheel brake cylinder operatively associated with said wheel to be controlled, said control means controlling said pressure regulating means in response to a result of comparison between the modified desired value provided by said desired value modifying means and the state variable monitored by said vehicle state monitor means, when said brake pedal is operated, to regulate the hydraulic braking pressure in said at least one wheel brake cylinder included in said hydraulic circuit including said wheel brake cylinder operatively associated with said wheel to be controlled.
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Accused Products
Abstract
The present invention is directed to a vehicle motion control apparatus, which includes a hydraulic pressure regulating device disposed between a master cylinder and a pair of wheel brake cylinders included in each of a dual hydraulic circuit, and a monitor for monitoring state variable of the vehicle. A desired value is provided for a wheel brake cylinder operatively associated with a wheel to be controlled, on the basis of the state variable. And, the desired value for at least one wheel brake cylinder in a hydraulic circuit including the wheel brake cylinder for the wheel to be controlled, is modified at least in response to operation of a brake pedal to provide a modified desired value. The regulating device is controlled in response to a result of comparison between the desired value and the state variable, to regulate the pressure in the wheel brake cylinder for the wheel to be controlled. When the brake pedal is operated, the regulating device is controlled in response to a result of comparison between the modified desired value and the state variable, to regulate the pressure in at least one wheel brake cylinder included in the aforementioned hydraulic circuit.
15 Citations
18 Claims
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1. A vehicle motion control apparatus comprising:
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wheel brake cylinders operatively associated with wheels of a vehicle, respectively;
a master cylinder connected to said wheel brake cylinders through a dual hydraulic circuit with a pair of wheel brake cylinders included in each hydraulic circuit, said master cylinder discharging a hydraulic braking pressure into each hydraulic circuit in response to operation of a brake pedal;
hydraulic pressure regulating means disposed between said master cylinder and said pair of wheel brake cylinders, for regulating the hydraulic braking pressure supplied into each of said pair of wheel brake cylinders;
vehicle state monitor means for monitoring state variable of said vehicle;
desired value setting means for setting a desired value provided for a wheel brake cylinder operatively associated with a wheel to be controlled, out of said pair of wheel brake cylinders included in each hydraulic circuit, said desired value setting means setting the desired value on the basis of the state variable monitored by said vehicle state monitor means;
desired value modifying means for modifying the desired value set by said desired value setting means to provide a modified desired value for at least one wheel brake cylinder out of said pair of wheel brake cylinders including said wheel brake cylinder operatively associated with said wheel to be controlled, at least in response to operation of said brake pedal; and
control means for controlling said pressure regulating means in response to a result of comparison between the desired value set by said desired value setting means and the state variable monitored by said vehicle state monitor means, to regulate the hydraulic braking pressure in said wheel brake cylinder operatively associated with said wheel to be controlled, said control means controlling said pressure regulating means in response to a result of comparison between the modified desired value provided by said desired value modifying means and the state variable monitored by said vehicle state monitor means, when said brake pedal is operated, to regulate the hydraulic braking pressure in said at least one wheel brake cylinder included in said hydraulic circuit including said wheel brake cylinder operatively associated with said wheel to be controlled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification