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.:
Date of Patent:
Feb. 03, 2009
Filed:
Oct. 13, 2004
Hideki Kawashima, Sagamihara, JP;
Hideaki Ohtsuka, Yokohama, JP;
Tatsuya Kamata, Atsugi, JP;
Kouichi Shimizu, Sagamihara, JP;
Hideyuki Saeki, Zama, JP;
Masanori Aoyagi, Zama, JP;
Hideki Kawashima, Sagamihara, JP;
Hideaki Ohtsuka, Yokohama, JP;
Tatsuya Kamata, Atsugi, JP;
Kouichi Shimizu, Sagamihara, JP;
Hideyuki Saeki, Zama, JP;
Masanori Aoyagi, Zama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A vehicle drive force control apparatus is provided that can stabilize the output of the electric motor even if the engine rotational speed experiences an acute change. The output of an engine is delivered to the left and right front wheels through a transmission and also to an electric generator. The output voltage of the electric generator is supplied to an electric motor and the output of the electric motor drives the left and right rear wheels. The drive force control device predicts if the rotational speed of the engine will decrease or increase acutely based on the upshifting and downshifting of the transmission and adjusts the field current of the electric generator up or down before the acute change in the engine rotational speed occurs.