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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 10760502 B1

PDFFull Text
Date of Patent:
Sep. 01, 2020

Filed:

Oct. 18, 2016

Lubricity estimation device and fuel supply control device

Applicant:

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

Inventors:

Atsunori Okabayashi, Kariya, JP;

Shinya Hoshi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye PC

Primary Examiner:

Joseph J Dallo

Assistant Examiner:

Scott A Reinbold

Int. Cl.
CPC ...
F02D 1/02 (2006.01); F02D 35/02 (2006.01); F02D 19/06 (2006.01); F02D 41/00 (2006.01); F02D 19/02 (2006.01); F02M 59/44 (2006.01); F02D 41/38 (2006.01); F02D 41/22 (2006.01); F02M 63/02 (2006.01); F02M 63/00 (2006.01);
U.S. Cl.
CPC ...
F02D 1/02 (2013.01); F02D 19/029 (2013.01); F02D 19/0634 (2013.01); F02D 35/023 (2013.01); F02D 35/028 (2013.01); F02D 41/0025 (2013.01); F02D 41/22 (2013.01); F02D 41/38 (2013.01); F02D 41/3845 (2013.01); F02M 59/447 (2013.01); F02M 63/0225 (2013.01); F02D 2041/224 (2013.01); F02D 2041/389 (2013.01); F02D 2200/0606 (2013.01); F02D 2200/0611 (2013.01); F02D 2200/0612 (2013.01); F02M 63/0001 (2013.01); F02M 2200/02 (2013.01);
Abstract

A lubricity estimation device is applied to a fuel supply system that supplies a fuel to an internal combustion engine, and includes a mixing ratio estimation unit and a lubrication index calculation unit. The mixing ratio estimation unit estimates the mixing ratio of each of plural types of molecular structures included in the fuel. The lubrication index calculation unit calculates a lubrication index, representing the lubricity of an outer peripheral portion Sof the piston of a fuel pump and an outer peripheral portion of the valve body of a fuel injection valve by the fuel, based on the mixing ratio estimated by the mixing ratio estimation unit.

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