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. 02, 2013
Filed:
May. 07, 2009
Masahide Ishikawa, Okazaki, JP;
Kaname Uzuki, Toyota, JP;
Atsushi Morita, Nagoya, JP;
Keiko Tanaka, Toyota, JP;
Yuki Miyamoto, Toyota, JP;
Satoru Shiga, Toyota, JP;
Masaki Morita, Toyota, JP;
Miyuki Matsuda, Toyota, JP;
Manabu Orihashi, Toyota, JP;
Yoshihiro Saeki, Toyota, JP;
Keiichi Uno, Kariya, JP;
Hiroki Nishimura, Nagoya, JP;
Takayuki Kumamoto, Toyota, JP;
Masahide Ishikawa, Okazaki, JP;
Kaname Uzuki, Toyota, JP;
Atsushi Morita, Nagoya, JP;
Keiko Tanaka, Toyota, JP;
Yuki Miyamoto, Toyota, JP;
Satoru Shiga, Toyota, JP;
Masaki Morita, Toyota, JP;
Miyuki Matsuda, Toyota, JP;
Manabu Orihashi, Toyota, JP;
Yoshihiro Saeki, Toyota, JP;
Keiichi Uno, Kariya, JP;
Hiroki Nishimura, Nagoya, JP;
Takayuki Kumamoto, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
When there is an extremely low ambient temperature, an electronic control unit controls operation of a circulation path for coolant water in such a manner that, after starting of an engine, the coolant water is supplied from the engine first to a throttle valve and an EGR valve and then to an oil warmer for a transmission. This solves a failure problem in the throttle valve and the EGR valve caused by frost formation at an early stage. As a result, desired operating performance of the vehicle is quickly ensured and heat management in the vehicle is carried out in a desired manner when there is an extremely low ambient temperature.