Braking controlling circuit for motor vehicle, has primary slave cylinder including piston whose section is higher than section of piston of primary master cylinder for increasing force between cylinders

摘要

The circuit has a braking controlling unit i.e. brake pedal, acting on a main master cylinder for generating hydraulic pressure in a main hydraulic circuit. An independent primary hydraulic circuit (51) is arranged upstream of the cylinder. The primary hydraulic circuit has a primary master cylinder (52) actuated by the pedal, and a primary slave cylinder (54) receiving pressure for actuating the main master cylinder. The cylinder (54) has a piston (70) whose section is higher than a section of a piston (74) of the cylinder (52) for increasing force between the cylinders (52, 54).