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.

Date of Patent:
Apr. 23, 2019

Filed:

May. 24, 2016
Applicant:

Yanmar Co., Ltd., Osaka-shi, Osaka-fu, JP;

Inventors:

Ryoichi Hagiwara, Osaka, JP;

Osamu Yamagishi, Osaka, JP;

Naoya Ikeda, Osaka, JP;

Assignee:

YANMAR CO., LTD., Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P 5/00 (2006.01); F02D 41/22 (2006.01); F02B 43/00 (2006.01); F02M 21/02 (2006.01); F02D 41/14 (2006.01); F02D 19/02 (2006.01); F02D 41/00 (2006.01); F02D 19/10 (2006.01); B63H 21/21 (2006.01); F02B 43/04 (2006.01); F02B 69/04 (2006.01); F02M 21/04 (2006.01); F02D 29/06 (2006.01); F02D 25/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/222 (2013.01); B63H 21/21 (2013.01); F02B 43/00 (2013.01); F02B 43/04 (2013.01); F02B 69/04 (2013.01); F02D 19/025 (2013.01); F02D 19/10 (2013.01); F02D 41/0027 (2013.01); F02D 41/1401 (2013.01); F02M 21/02 (2013.01); F02M 21/04 (2013.01); B63H 2021/216 (2013.01); F02D 25/00 (2013.01); F02D 29/06 (2013.01); F02D 41/0025 (2013.01); F02D 2041/1433 (2013.01); F02D 2041/227 (2013.01); F02D 2200/1004 (2013.01); Y02T 10/36 (2013.01);
Abstract

An engine device of including: an intake manifold configured to supply air into a cylinder; a gas injector configured to mix fuel gas with air supplied from the intake manifold, and supply mixed gas to the cylinder; an igniter configured to ignite, in the cylinder, premixed fuel obtained by pre-mixing the fuel gas with the air; and a control unit configured to execute a combustion control of a premixed fuel based on the output signal indicative of an output from the engine device. When the air amount is determined to be insufficient and when the output signal is lost, the control unit estimates an output signal based on the fuel gas injection amount from the gas injector, and executes the combustion control based on the estimated output signal.


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