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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10260465 B1

PDFFull Text
Date of Patent:
Apr. 16, 2019

Filed:

Aug. 21, 2014

Fuel pump and control method therefor including control of rotation speed of impeller

Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventors:

Yuuji Hidaka, Kariya, JP;

Masaya Ootake, Kariya, JP;

Kiyoshi Nagata, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Dominick L Plakkoottam

Assistant Examiner:

Stephen A Mick

Int. Cl.
CPC ...
F02M 37/08 (2006.01); F02M 37/20 (2006.01); F02M 37/10 (2006.01); F02D 33/00 (2006.01); F02D 41/30 (2006.01); F02D 41/00 (2006.01); F04D 3/00 (2006.01); F04D 13/06 (2006.01); F04D 15/00 (2006.01); F04D 29/18 (2006.01); F04D 29/52 (2006.01);
U.S. Cl.
CPC ...
F02M 37/08 (2013.01); F02D 33/003 (2013.01); F02D 41/0025 (2013.01); F02D 41/3082 (2013.01); F02M 37/10 (2013.01); F02M 37/20 (2013.01); F04D 3/005 (2013.01); F04D 13/06 (2013.01); F04D 15/0066 (2013.01); F04D 29/181 (2013.01); F04D 29/528 (2013.01); F02D 2200/0602 (2013.01); F02D 2250/02 (2013.01); F02M 2037/085 (2013.01);
Abstract

An ECU of a fuel pump executes a feedback control to drive a motor part and sets a rotation speed of an impeller to become a rotation speed corresponding to the target fuel pressure. The ECU detects whether a vapor is generated in a fuel of a pump chamber of the fuel pump, based on a fuel pressure detected by a pressure sensor. When a generation of the vapor is detected, the ECU sets a rotation speed of the impeller to be higher than the rotation speed under a normal control for a predetermined time with a result that the vapor in the pump chamber and a fuel flow channel is discharged into a vapor discharge hole. Thus, the vapor of the pump chamber is discharged from the vapor discharge hole to an outside of the fuel pump.

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