Brake controlling apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsRyochi Watanabe, Hidehisa Kato
Life of this patent
Estimating the term…
Abstract
A brake controlling apparatus (electronic control unit) of a braking device including a booster valve to be opened at a time of request to boost a pressure of a brake liquid to supply to a wheel to be controlled, and a piston pump for supplying pressurized brake liquid to an upstream side of the booster valve, the brake controlling apparatus including a brake liquid pressure controlling unit that sets a duty ratio between a closing period and a opening period of the booster valve so that a dischargeable period of the brake liquid in the piston pump appears in the opening period of the booster valve, and controls the booster valve based on the duty ratio.
Claims6
1-5. (canceled)
A brake controlling apparatus of a braking device including a booster valve to be opened at a time of request to boost a pressure of a brake liquid to supply to a wheel to be controlled, and a piston pump for supplying pressurized brake liquid to an upstream side of the booster valve, the brake controlling apparatus comprising:
- a brake liquid pressure controlling unit that sets a duty ratio between a closing period and a opening period of the booster valve so that the opening period of the booster valve becomes at least a dischargeable period of the brake liquid in the piston pump, and controls the booster valve based on the duty ratio, wherein
- the brake liquid pressure controlling unit sets the duty ratio of the booster valve so that the opening period of the booster valve becomes at least a period of longer than or equal to one cycle of the piston pump.
A brake controlling apparatus of a braking device including a booster valve to be opened at a time of request to boost a pressure of a brake liquid to supply to a wheel to be controlled, and a piston pump for supplying pressurized brake liquid to an upstream side of the booster valve, the brake controlling apparatus comprising:
- a brake liquid pressure controlling unit that sets a duty ratio between a closing period and a opening period of the booster valve so that the opening period of the booster valve becomes at least a dischargeable period of the brake liquid in the piston pump, and controls the booster valve based on the duty ratio, wherein
- the brake liquid pressure controlling unit sets the duty ratio of the booster valve based on an output rotation number of an electric motor as a drive source of the piston pump.
Dependencies are inferred from the claim text.