Fluid-pressure and analogous brake systems – With pump
Patent
1996-08-27
1998-03-31
Graham, Matthew C.
Fluid-pressure and analogous brake systems
With pump
303 11, 303161, 3031164, B60T 1702, H02P 308, H02P 324
Patent
active
057330174
ABSTRACT:
The invention is directed to a pressure accumulating control system for use in a pressure supply apparatus which has a fluid pump, an electric motor for driving the fluid pump to supply a hydraulic pressure, and an accumulator for accumulating the hydraulic pressure supplied from the fluid pump. The system includes a pressure detection device for detecting the hydraulic pressure accumulated in the accumulator, and a continuous control device for feeding a current to the motor continuously. The continuous control device is adapted to feed the current to the motor continuously, when the pressure detected by the pressure detection device becomes less than a predetermined lower limit, and is adapted to terminate the continuous feeding of the current to the motor, when the pressure detected by the pressure detection device exceeds a predetermined upper limit. The system further includes an intermittent control device for feeding a current to the motor intermittently by a predetermined cycle of time. The intermittent control device is adapted to terminate the continuous feeding of the current to the motor, and is adapted to feed the current to the motor intermittently, when the current is continuously fed to the motor by the continuous control device for a period longer than a predetermined time.
REFERENCES:
patent: 5295737 (1994-03-01), Epple et al.
patent: 5320421 (1994-06-01), Kade et al.
patent: 5515678 (1996-05-01), Kurokawa et al.
Service Manual of 1991 Model of SOARER, Toyota Motor Corporation, pp. 3-150 to 152, 1991.
Hamada Toshiaki
Nakashima Hiroshi
Sakakibara Yuichiro
Terazawa Tadashi
Aisin Seiki Kabushiki Kaisha
Graham Matthew C.
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