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:
Mar. 27, 1990

Filed:

Nov. 21, 1988
Applicant:
Inventors:

Hiroya Ohkumo, Koganei, JP;

Ryuzo Sakakiyama, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ; B60K / ;
U.S. Cl.
CPC ...
192-0076 ; 192 215 ; 1921 / ;
Abstract

A system for controlling clutch current of an electromagnetic clutch at acceleration of a vehicle on a downhill. The clutch is engaged when vehicle speed is higher than a first reference speed. When the vehicle is accelerated on a downhill at a speed higher than a second reference speed which is lower than the first reference speed, the clutch is engaged to provide an engine braking effect.


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