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.

Date of Patent:
Jul. 04, 2017

Filed:

Oct. 15, 2013
Applicants:

Takeaki Suzuki, Susono, JP;

Masaki Matsunaga, Odawara, JP;

Yasunari Kido, Hadano, JP;

Takayuki Kogure, Susono, JP;

Yukari Okamura, Gotenba, JP;

Rentaro Kuroki, Susono, JP;

Takuya Hirai, Susono, JP;

Masaki Mitsuyasu, Kawasaki, JP;

Jonggap Kim, Hadano, JP;

Akihiro Sato, Nagoya, JP;

Yusuke Kinoshita, Toyota, JP;

Inventors:

Takeaki Suzuki, Susono, JP;

Masaki Matsunaga, Odawara, JP;

Yasunari Kido, Hadano, JP;

Takayuki Kogure, Susono, JP;

Yukari Okamura, Gotenba, JP;

Rentaro Kuroki, Susono, JP;

Takuya Hirai, Susono, JP;

Masaki Mitsuyasu, Kawasaki, JP;

Jonggap Kim, Hadano, JP;

Akihiro Sato, Nagoya, JP;

Yusuke Kinoshita, Toyota, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60W 30/18 (2012.01); B60W 10/02 (2006.01); B60W 10/06 (2006.01);
U.S. Cl.
CPC ...
B60W 30/18072 (2013.01); B60W 10/02 (2013.01); B60W 10/06 (2013.01); B60W 2030/1809 (2013.01); B60W 2550/142 (2013.01);
Abstract

An upper limit value of an upward gradient of a road surface for starting neutral coasting is set to be larger than an upper limit of the upward gradient of the road surface for starting free-run coasting, so, when the upward gradient is relatively large and a coasting distance is short, the vehicle is caused to travel in the neutral coasting, and stop and restart of the engine are not carried out. Therefore, a decrease in drivability of the vehicle is suppressed. When the upward gradient is relatively small and the coasting distance is long, the vehicle is caused to travel in the free-run coasting, and supply of fuel to the engine is stopped, so fuel economy of the vehicle is obtained. Thus, it is possible to achieve both fuel economy and drivability of the vehicle during coasting on an upward gradient.


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