Title:
DRIVE CONTROL DEVICE OF FUEL PUMP
Document Type and Number:
Japanese Patent JP2014190240
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a drive control device of a fuel pump which can drive a motor with a brush at a low voltage while removing filming by suppressing the deterioration of power consumption.SOLUTION: A control device 1 of a fuel pump performs fuel supply to a fuel injector 3a by a motor 7d with a brush. A time at which the motor 7d with the bush is driven at a voltage lower than a prescribed voltage Va is calculated at a count value Nc of a counter, and it is determined whether or not a fuel supply state of a fuel pump 7 is out of a normal range. When the count value Nc is not smaller than a first prescribed value N1 and the fuel supply state is out of the normal range, the motor 7d with the brush is driven at a voltage higher than the prescribed voltage Va.
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Inventors:
KAWAGUCHI TAICHIRO
Application Number:
JP2013066672A
Publication Date:
October 06, 2014
Filing Date:
March 27, 2013
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02M37/08; F02D41/14; F02D41/22; H02P7/06
Attorney, Agent or Firm:
Patent business corporation ARC PATENT ATTORNEYS' OFFICE