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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 9759136 B1

PDFFull Text
Date of Patent:
Sep. 12, 2017

Filed:

Feb. 03, 2016

Variable valve operating system

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventor:

Hiroyuki Haga, Numazu, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;

Attorney:

Andrews Kurth Kenyon LLP

Primary Examiner:

Ching Chang

Int. Cl.
CPC ...
F01L 1/34 (2006.01); F02D 13/02 (2006.01); F01L 13/00 (2006.01); F02D 41/12 (2006.01); F01L 1/18 (2006.01); F01L 1/26 (2006.01); F02D 41/00 (2006.01); F01L 1/46 (2006.01); F01L 1/24 (2006.01);
U.S. Cl.
CPC ...
F02D 13/0207 (2013.01); F01L 1/185 (2013.01); F01L 1/267 (2013.01); F01L 13/0036 (2013.01); F02D 41/0005 (2013.01); F02D 41/123 (2013.01); F01L 1/2411 (2013.01); F01L 2001/186 (2013.01); F01L 2001/467 (2013.01); F01L 2105/00 (2013.01); F01L 2800/00 (2013.01); F02D 2041/001 (2013.01); Y02T 10/18 (2013.01); Y02T 10/42 (2013.01);
Abstract

A variable valve operating system assembled in an engine includes a first rocker arm contacting with a valve, a second rocker arm no contacting with any valve, a lost motion spring bringing the second rocker arm into contact with a cam, and switching device for switching the first/second rocker arms to a coupled or uncoupled state. An operation control apparatus for the engine includes element for determining whether or not an engine speed is higher than a first speed at which supply of fuel is allowed to be temporarily stopped, and element for setting a requested quantity of increase/decrease in internal resistance of the engine. When the engine speed is higher than the first speed and an accelerator opening degree is 0%, the switching device switches the first/second rocker arms to the coupled or uncoupled state based on the requested quantity.

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