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:
Apr. 01, 2014
Filed:
Aug. 02, 2011
Hiroyasu Kuniyoshi, Hitachinaka, JP;
Akira Nishioka, Hitachinaka, JP;
Ryuu Kai, Hitachinaka, JP;
Kenichi Machida, Isesaki, JP;
Yoshiaki Nagasawa, Hitachinaka, JP;
Hiroyasu Kuniyoshi, Hitachinaka, JP;
Akira Nishioka, Hitachinaka, JP;
Ryuu Kai, Hitachinaka, JP;
Kenichi Machida, Isesaki, JP;
Yoshiaki Nagasawa, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
There is provided an idle stop system that can more quickly restart with small noise in conducting idle stop. In preparation for a restart request during an engine inertial rotation, after a motor is rotated in a state where a starter motor is not coupled to the engine, a pinion is engaged with a ring gear during the motor is subjected to inertial rotation like the engine. In this situation, the rotational speed including future pulsation of the engine is estimated with the use of information on the crank angle, and a pinion pushing timing is controlled so that the pinion and the ring gear contact each other with a given rotational speed difference taking a delay time of a pinion pushing unit into consideration.