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:
Jan. 17, 2012

Filed:

Sep. 21, 2007
Applicants:

Gou Asai, Osaka, JP;

Hitoshi Adachi, Osaka, JP;

Isao Takagawa, Osaka, JP;

Takashi Miyamoto, Osaka, JP;

Inventors:

Gou Asai, Osaka, JP;

Hitoshi Adachi, Osaka, JP;

Isao Takagawa, Osaka, JP;

Takashi Miyamoto, Osaka, JP;

Assignee:

Yanmar Co., Ltd., Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 7/00 (2006.01); F02D 13/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for controlling an internal combustion engine, in which a traveling with reduced cylinders is controlled according to the idle-speed after the engine starting, so as to restrain the discharge of white smokes at the time lag for temperature equilibration soon after a cold starting. The method comprises a coolant water temperature detecting meansfor detecting the coolant water temperature in the internal combustion engine, a rotation speed detecting meansfor detecting the rotation speed of the internal combustion engineand a control means for controlling the operation of the internal combustion enginein accordance with the coolant water temperature and the rotation speed. When the internal combustion engine is evaluated that it is at the cold starting and the rotation speed reaches the predetermined rotation speed after the engine starting, a traveling with reduces cylinders is performed, which reduces the number of cylinders injecting fuels for a certain period of time.


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