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:
May. 07, 2019

Filed:

Dec. 27, 2010
Applicants:

Tomoki Fukushima, Wako, JP;

Tadayuki Yoneyama, Wako, JP;

Hayato Matsuda, Wako, JP;

Takashi Hashizume, Wako, JP;

Inventors:

Tomoki Fukushima, Wako, JP;

Tadayuki Yoneyama, Wako, JP;

Hayato Matsuda, Wako, JP;

Takashi Hashizume, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M 43/00 (2006.01); G06F 17/00 (2006.01); F02D 41/14 (2006.01); F02D 19/06 (2006.01); F02D 19/08 (2006.01); F02D 41/00 (2006.01); F02D 41/18 (2006.01);
U.S. Cl.
CPC ...
F02D 41/1458 (2013.01); F02D 19/061 (2013.01); F02D 19/0613 (2013.01); F02D 19/0631 (2013.01); F02D 19/084 (2013.01); F02D 19/088 (2013.01); F02D 41/0025 (2013.01); F02D 19/0655 (2013.01); F02D 19/081 (2013.01); F02D 41/0035 (2013.01); F02D 41/0052 (2013.01); F02D 41/182 (2013.01); F02D 2200/0404 (2013.01); F02D 2200/604 (2013.01); Y02T 10/36 (2013.01);
Abstract

In an apparatus for controlling an air/fuel ratio of a general-purpose internal combustion engine using mixed fuel containing alcohol and gasoline and operated at a desired engine speed inputted by the operator while a throttle opening is regulated such that a detected engine speed converges to the inputted desired engine speed, a fuel injection amount determined for mixed fuel based on fuel injection amount characteristics is increased/decreased when a load is kept constant and the output air/fuel ratio is estimated to correct the fuel injection amount by the estimated air/fuel ratio, while a switch (knob) is installed to be manipulated by the operator to switch the fuel injection amount characteristics.


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