Control method for improving brake performance

• Main Authors: YU SHITAO, NI CHUNSHENG, LI JUN
• Format: Patent
• Language: Chinese; English
• Published: 26.12.2012
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

The invention discloses a control method for improving the brake performance, which comprises the following steps of: a step 1 of judging whether to meet the following conditions that a brake signal exists, the rotating speed of an engine is higher than the lowest operation rotating speed and fuel is cut off after braking is carried out; a step 2 of judging whether the vacuum degree of a vacuum booster is reduced to a certain threshold value if the conditions are met, and if yes, actively reducing the opening of a throttle valve by a system to improve the vacuum degree of an intake manifold so as to improve the vacuum degree of the booster; and a step 3 of continuously judging the current vacuum degree state of the brake booster and stopping the active control of the electronic throttle valve to improve the vacuum degree until the vacuum degree is improved to a threshold value. According to the invention, the vacuum degree of the vacuum booster can be improved, the promotion of the brake performance is implem