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:
Jul. 26, 2016
Filed:
Feb. 22, 2012
Kenji Hayashi, Okazaki, JP;
Takumi Anzawa, Okazaki, JP;
Eiji Fukushiro, Tokai, JP;
Katsuhiko Yamaguchi, Nisshin, JP;
Kenji Hayashi, Okazaki, JP;
Takumi Anzawa, Okazaki, JP;
Eiji Fukushiro, Tokai, JP;
Katsuhiko Yamaguchi, Nisshin, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An ECU for controlling an engine counts an unused time TIM of engine in a low-temperature environment. If the unused time TIM is shorter than a predetermined reference value, the ECU sets idle speed immediately after start of operation of the engine to a first idle speed, and if the unused time TIM is longer than the reference value, sets the idle speed to a second idle speed higher than the first idle speed. If duration of the second idle speed exceeds a reference period determined by state of driving of the vehicle, the ECU sets the idle speed to be lower than the second idle speed. In this manner, increased vibration in idling operation in a low-temperature environment can be prevented.