Back to results
US 5,631,632 AGranted
Pressure monitoring system
AssigneeAisin Seiki Kabushiki Kaisha
InventorsHiroshi Nakashima, Toshiaki Hamada, Tadashi Terazawa, Yuichiro Sakakibara
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAisin Seiki Kabushiki Kaisha
InventorsHiroshi Nakashima, Toshiaki Hamada, Tadashi Terazawa, Yuichiro Sakakibara
Estimating the term…
The invention is directed to a pressure monitoring system for monitoring a hydraulic pressure which is supplied from a fluid pump and accumulated in an accumulator. The pressure monitoring system includes an electric motor which drives the fluid pump to supply the hydraulic pressure in substantially linear proportion to a current fed to the motor, a current detection device which detects the current fed to the motor, and a pressure estimation device which estimates the hydraulic pressure accumulated in the accumulator in response to the current detected by the current detection device. A malfunction detection device may be provided for detecting a malfunction on the basis of the output of the pressure estimation device.
A pressure monitoring system for monitoring a hydraulic pressure which is supplied from a fluid pump and accumulated in an accumulator, comprising:
Dependencies are inferred from the claim text.