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. 19, 2013
Filed:
May. 27, 2009
Takashi Matsuda, Isehara, JP;
Masato Koga, Hiratsuka, JP;
Hironori Nihei, Isehara, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
At vehicle stop judgment time t, a first engine automatic-stop control permission judgment, based on idle stop permission conditions by which an instant permission judgment can be possible, is carried out. If a result of the first engine automatic-stop control permission judgment at time tis 'permitted', the second engine automatic-stop control permission judgment, based on an idle stop permission condition which requires a certain time for the judgment, is initiated, and an electric oil pump ON (drive) command (the test drive command) is issued. At time tat which an actual drive of the electric oil pump in response to the test drive command is detected, it is judged that a failure of an electric system of the electric oil pump and a foreign matter-biting failure of the electric oil pump do not occur, then a failure judgment of the electric oil pump becomes 'normal'. This judgment is completed before time tat which the second engine automatic-stop control permission judgment ends, and both of “permitted” of a result of the second engine automatic-stop control permission judgment and “normal” of the failure judgment of the electric oil pump, an idle stop ON command is not outputted.