Title:
FUEL PUMP, AND ITS CONTROL METHOD
Document Type and Number:
Japanese Patent JP2016169738
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel pump capable of preventing the vapor lock of a pump chamber.SOLUTION: An ECU of a fuel pump feedback-controls the drive of a motor, to set (S2) the rotation number of an impeller to one according to a target fuel pressure. On the basis of the fuel pressure detected by a pressure sensor, the ECU detects (S3) whether or not a vapor has occurred in the fuel of a pump chamber. If the occurrence of vapor is detected (S3: YES), the ECU sets the revolution number of the impeller higher than the target revolution number determined by the feedback control, for a predetermined time period (S4 and S5). As a result, the vapor of the pump chamber is discharged to the outside of the fuel pump.SELECTED DRAWING: Figure 9
Inventors:
HIDAKA YUJI
OTAKE AKIYA
OSADA KIYOSHI
OTAKE AKIYA
OSADA KIYOSHI
Application Number:
JP2016099203A
Publication Date:
September 23, 2016
Filing Date:
May 18, 2016
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02M37/20; F02M37/08; F02M59/44; F02M69/00; F04D15/00
Domestic Patent References:
| JPH11218059A | 1999-08-10 | |||
| JPH0518388A | 1993-01-26 | |||
| JP2005076568A | 2005-03-24 |
Attorney, Agent or Firm:
Masaki Hattori
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