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. 15, 2003

Filed:

Oct. 03, 2001
Applicant:
Inventors:

Tooru Nakasako, Saitama, JP;

Naoki Uchiyama, Saitama, JP;

Kouji Tamenori, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60L 1/112 ;
U.S. Cl.
CPC ...
B60L 1/112 ;
Abstract

A control device for a front and rear wheel drive vehicle wherein one of a front wheel pair and a rear wheel pair is driven with an engine and the other one of the front and rear wheel pairs is driven with an electric motor supplied with electric power from an electric storage means is disclosed as including a drive condition detection means for detecting a running condition of the vehicle, a road surface frictional coefficient estimating means for estimating a road surface frictional coefficient, an atmospheric temperature detection means for detecting an atmospheric temperature, a temperature detection means for detecting a temperature of the electric storage means, a motor drive power calculation means for calculating a drive power of the electric motor responsive to the detected running condition and the estimated road surface frictional coefficient, and a control mode changeover means for changing over control modes during calculation of the drive power of the electric motor responsive to the detected atmospheric temperature or/and the temperature of the electric storage means.


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