System and method for emergency braking

摘要

A method for automatically decelerating a vehicle having a first side with a first front wheel brake and a first rear wheel brake and second side with a second front wheel brake and a second rear wheel brake, and in which the vehicle further has a braking system with a pump operable to deliver a flow of pressurized hydraulic fluid to the first and second front wheel brakes and to the first and second rear wheel brakes, includes receiving a signal associated with an emergency braking event. The method further includes increasing the hydraulic pressure at the first and second front wheel brakes at a greater rate than at the first and second rear wheel brakes. The method also includes directing hydraulic fluid from the first front wheel brake to the second rear wheel brake upon achieving a targeted level of deceleration or wheel slip.

主权项

1. A method for automatically decelerating a vehicle having a first side with a first front wheel brake and a first rear wheel brake and second side with a second front wheel brake and a second rear wheel brake, the vehicle further having a braking system with a pump operable to deliver a flow of pressurized hydraulic fluid to the first and second front wheel brakes and to the first and second rear wheel brakes, the method comprising:
receiving a signal associated with an emergency braking event; increasing the hydraulic pressure at the first and second front wheel brakes at a greater rate than at the first and second rear wheel brakes; and upon achieving a targeted level of deceleration or wheel slip, directing hydraulic fluid from the first front wheel brake to the second rear wheel brake, wherein increasing the hydraulic pressure to the front wheel brakes at a greater rate than to the rear wheel brakes is initiated at a predetermined braking system control point, further including increasing hydraulic pressure at the front and rear wheel brakes in response to receiving the signal, and further including operating the pump to pressurize the braking system prior to the increasing hydraulic pressure at the front and rear wheel brakes in response to receiving the signal.