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:
Oct. 17, 2017
Filed:
Sep. 27, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Hidetoshi Ooiwa, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An evaporative fuel processing apparatus executes a purge process when a predetermined purge condition is satisfied. A precondition, which is satisfied immediately before the satisfaction of the purge condition, is set. An operation of a purge pump is started at the time of satisfying the precondition. Thereafter, when the purge condition is satisfied, the purge valve is opened to execute the purge process. In this way, the time required for the purge pump to reach a rated rotational speed upon satisfaction of the purge condition can be shortened. Thus, the operating time period of the purge pump can be shortened, and the response delay of the purge can be avoided. That is, it is possible to limit shortage of the purge amount caused by the response delay.