초록 ▼

A vehicle dynamics control system for an automotive vehicle with a diagonal split layout of brake circuits comprises a tandem master cylinder, two hydraulic pumps each fluidly disposed in one of the two brake circuits, selector valves for selecting a brake-fluid pressure to be fed to a first brake l

A vehicle dynamics control system for an automotive vehicle with a diagonal split layout of brake circuits comprises a tandem master cylinder, two hydraulic pumps each fluidly disposed in one of the two brake circuits, selector valves for selecting a brake-fluid pressure to be fed to a first brake line and for selecting a brake-fluid pressure to be fed to a second brake line, a plurality of pressure control valves for regulating a fluid pressure in each individual wheel-brake cylinder, vehicle sensors for detecting a vehicle's cornering behavior, and a control unit being responsive to the sensor's input information for controlling the respective valves. The control unit operates to supply the fluid pressure generated from the pump to an inner front wheel-brake cylinder in the vehicle understeer on turns. The control unit also operates to supply the fluid pressure generated from the pump to an outer front wheel-brake cylinder in the vehicle oversteer on turns.

대표청구항 ▼

[ What is claimed is:] [1.] A vehicle dynamics control system for an automotive vehicle with a diagonal split layout of brake circuits, said system comprising:a first brake line connected to a first diagonally-opposed pair of wheel-brake cylinders;a second brake line connected to a second diagonally

[ What is claimed is:] [1.] A vehicle dynamics control system for an automotive vehicle with a diagonal split layout of brake circuits, said system comprising:a first brake line connected to a first diagonally-opposed pair of wheel-brake cylinders;a second brake line connected to a second diagonally-opposed pair of wheel-brake cylinders;a first brake-fluid pressure generator for generating a first brake-fluid pressure which is variable depending on a magnitude of brake-pedal depression;a second brake-fluid pressure generator for generating a second brake-fluid pressure, independently of said first brake-fluid pressure based on the magnitude of brake-pedal depression;a first brake-fluid pressure selector valve means for selecting a brake-fluid pressure to be fed to said first brake line from between said first and second brake-fluid pressures;a second brake-fluid pressure selector valve means for selecting a brake-fluid pressure to be fed to said second brake line from between said first and second brake-fluid pressures;a first pressure control valve means fluidly disposed in a first brake circuit including said first brake line for regulating a fluid pressure in each of said first diagonally-opposed pair of wheel-brake cylinders;a second pressure control valve means fluidly disposed in a second brake circuit including said second brake line for regulating a fluid pressure in each of said second diagonally-opposed pair of wheel-brake cylinders;a vehicle-behavior detector for detecting a vehicle's cornering behavior; anda brake-fluid pressure control means being responsive to input information from said vehicle-behavior detector for controlling said first and second brake-fluid pressure selector valve means and said first and second pressure control valve means;wherein said brake-fluid pressure control means operates to supply said second brake-fluid pressure to an inner front wheel-brake cylinder of said first and second diagonally-opposed pairs of wheel-brake cylinders for increasing a fluid pressure in the inner front wheel-brake cylinder and operates to reduce a fluid pressure in an outer rear wheel-brake cylinder of said first and second diagonally-opposed pairs of wheel-brake cylinders to a predetermined minimum brake-fluid pressure level when said input information from said vehicle-behavior detector indicates a vehicle understeer during a turn, and said brake-fluid pressure control means operates to supply said second brake-fluid pressure to an outer front wheel-brake cylinder of said first and second diagonally-opposed pairs of wheel-brake cylinders for increasing a fluid pressure in the outer front wheel-brake cylinder and operates to reduce a fluid pressure in an inner rear wheel-brake cylinder of said first and second diagonally-opposed pairs of wheel-brake cylinders to a predetermined minimum brake-fluid pressure level when said input information from said vehicle-behavior detector indicates a vehicle oversteer during a turn.