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Brake fluid pressure controller for vehicle
 
   
Document Number
US Patent 7568773
Issued Date
August 4, 2009
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Abstract
A brake fluid pressure controller for a vehicle includes: wheel brakes; a master cylinder for supplying pressure to a brake fluid; at least one fluid pressure passage connecting the wheel brakes with the master cylinder; a pump provided on each fluid pressure passage for intensifying the brake fluid pressure; a revolution-controllable motor for driving the pump; a motor drive control part for controlling motor revolutions; a target fluid pressure calculation part for setting a target fluid pressure of the brake fluid; a brake fluid pressure acquisition part; and a fluid pressure deviation calculation part for calculating a difference between the target fluid pressure and the brake fluid pressure. When the difference is less than a predetermined value, the motor drive control part drives the motor at a smaller number of revolutions, as compared with a case where the difference is the predetermined value or more.
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Number of Claims:
14
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Owner
Published
August 4, 2009
Application Number
11/488,045
Filed
July 18, 2006
US Classification
303/115.5   303/142 303/146 303/162
Int'l Classification
B60T   8/42   (20060101)  
Examiner
Attorney/Law Firm
Priority Data
Jul 19, 2005 [JP] 2005-208919 Jul 28, 2005 [JP] 2005-219042
USPTO Field of Search
303/115.5   303/142   303/146   303/162   303/10   303/11   303/161   303/116.1   303/116.3   303/116.4   303/115.4  
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