To minimize the influences of characteristic variation, and sufficiently exert the desired braking performance of a brake device by properly correcting a negative pressure/assisting limit master cylinder pressure map corresponding to a characteristic even when there is variation in a negative pressure/assisting limit master cylinder pressure characteristic of a vacuum booster in a brake device.
This brake ECU 26 of a brake device correction means includes a correction means which compares a negative-pressure/assisting-limit-master-cylinder-pressure-map with data comprising a negative pressure and a master cylinder pressure fetched determined according to whether an actual assisting limit of the vacuum booster is exceeded in treading a brake operating member, and fetched in canceling the treading of the brake operating member under the fetched negative pressure, and which corrects the negative pressure/assisting limit master cylinder pressure based on the comparison results.
KATO TOMOHIRO
TOMITA KOUICHI
KAMIYA YUSUKE
TOYOTA MOTOR CORP
| JP2001080497A | 2001-03-27 | |||
| JP2006192945A | 2006-07-27 | |||
| JP2001171511A | 2001-06-26 | |||
| JPH11301459A | 1999-11-02 |
Next Patent: STRUCTURAL MEMBER FOR RAILWAY VEHICLE