US 2001/0054842 A1 · Braking control apparatus for vehicles

Abstract

A vehicle braking control apparatus carries out a pressure apply check to determine if the automatic pressure apply is calculated normally when the vehicle is started. The apparatus includes a fluid pressure generator that generates a master cylinder pressure in response to a pedal depression force, a fluid supplying device that supplies a braking fluid pressure to the wheel cylinders from the master cylinder, and a pressure apply device that introduces the fluid pressure to the pressure chamber of the fluid pressure generator. A controller controls the braking force of each wheel by driving the fluid pressure supplying device and controls pressurization of the master cylinder pressure by automatically controlling the pressure apply device. A pressure apply check device starts a pressure apply check to determine that the automatic pressure apply is calculated normally when the master cylinder pressure is increased up to a fixed value within a fixed time after the pressure apply check is started.

Claims18

Dependent claims

A braking control apparatus for a vehicle that includes an engine, a brake pedal and wheels, comprising;

fluid pressure generating means for generating a brake fluid pressure in response to a brake pedal depression force;
fluid supplying means for supplying the brake fluid pressure from the fluid pressure generating means to wheel cylinders associated with the wheels to apply a braking force;
pressure apply means for introducing fluid pressure to a pressure chamber of the fluid pressure generating means;
and
control means for automatically increasing the brake fluid pressure by controlling the pressure apply means and for controlling the braking force of each wheel by controlling a driving operation of the fluid supplying means;
the control means including pressure apply check means for starting a pressure apply check when the vehicle is started to determine whether the automatic pressure increase of the brake fluid pressure is properly performed;
the pressure apply check means determining the automatic pressure increase is properly made when the master cylinder pressure is increased to a predetermined value within a predetermined time after the pressure apply check is started.

4 more elements

A braking control apparatus for a vehicle that includes an engine, a brake pedal and wheels, comprising;

a master cylinder generating a brake fluid pressure in response to a brake pedal depression force, the master cylinder including a pressure chamber connected to at least one wheel cylinder associated with one of the wheels;
a fluid pressure sensor detecting a master cylinder pressure in the pressure chamber;
a pressure apply unit performing pressure apply by introducing fluid pressure to the pressure chamber of the master cylinder;
a controller automatically increasing the brake fluid pressure by controlling the pressure apply unit;
and
pressure apply check means for starting a pressure apply check when the vehicle is started to determine whether the pressure apply is abnormal, the pressure apply check means determining the pressure apply is abnormal when the master cylinder pressure determined by the fluid pressure sensor fails to reach a predetermined value within a predetermined time.

3 more elements

Dependencies are inferred from the claim text.

Braking control apparatus for vehicles

Life of this patent

Braking control apparatus for vehicles

Life of this patent

Abstract

Claims18