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. 12, 2008
Filed:
Aug. 12, 2003
Hideaki Gouda, Ageo, JP;
Mitsuhiro Nishina, Ageo, JP;
Yuji Suzuki, Ageo, JP;
Nissan Diesel Motor Co., Ltd., Saitama, JP;
Abstract
A hybrid electric drive system for a vehicle comprises a combustion engine (), a transmission (), a first clutch () disposed between the engine () and the transmission (), a rotating electric machine () which serves as a motor as well as a generator, a second clutch () disposed between the rotating electric machine () and the transmission (), and a storage device (). When the second clutch () is commanded to connect the rotating electric machine () to the transmission (), a control unit () controls the rotating electric machine () so as to decrease the difference between the rotation speeds of the rotating electric machine () and the transmission () (S) and cause the second clutch () to connect the rotating electric machine () to the transmission () only after the difference decreases to a allowable value (SS).