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. 12, 2005

Filed:

Apr. 29, 2003
Applicants:

Yutaka Kitamura, Tokyo, JP;

Kazuhiro Odahara, Tokyo, JP;

Shigeru Shiroyama, Tokyo, JP;

Inventors:

Yutaka Kitamura, Tokyo, JP;

Kazuhiro Odahara, Tokyo, JP;

Shigeru Shiroyama, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K041/02 ; F16H003/72 ;
U.S. Cl.
CPC ...
Abstract

A power transmission control device for vehicle controls switching between a speed increasing mode and a constant speed mode on the basis of electrical load, battery or the like, and shock due to switching is less. The power transmission control device includes: an electric rotating machine; a crank pulley; a planetary gear mechanism consisting of a sun gear, a planetary gearand an internal gear; and controllerfor controlling an electromagnetic clutch. The electromagnetic clutchis ON to operate the planetary gear mechanism as a speed increasing mechanism and drive the electric rotating machineat an increasing speed, when engine speed of the internal combustion engineis not higher than a predetermined value, remaining capacity of the batteryis not more than a predetermined level or electrical load is in a high-load state.


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