Electric pump control system
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsYasushi Aoki, Takeshi Ohba, Yukihisa Ishii, Hiroyuki Matsuo
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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsYasushi Aoki, Takeshi Ohba, Yukihisa Ishii, Hiroyuki Matsuo
Estimating the term…
An electric pump is turned ON and OFF by a main drive circuit including a negative pressure sensor for detecting a negative pressure in an accumulator, a first relay and a control device, and also turned ON and OFF by a back-up drive circuit including a negative pressure switch for detecting a negative pressure in an accumulator, and a second relay. For a period from the starting of the electric pump by the back-up drive circuit to the stopping of the electric pump by the main drive circuit, there is a period during which the electric pump is being driven only by the back-up drive circuit and a period during which the electric pump is being driven only by the main drive circuit. For each of these periods, a trouble of the main drive circuit and/or the back-up drive circuit can be determined by reference to a check signal indicative of the operational state of the electric pump. Thus, it is possible to reliably detect a trouble with the driving of the electric pump connected to the accumulator.
An electric pump control system, comprising:
An electric pump control system, comprising:
Dependencies are inferred from the claim text.