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:
Nov. 04, 2014
Filed:
Mar. 30, 2011
Hiroshi Tsutsui, Aichi ken, JP;
Yutaka Teraoka, Anjo, JP;
Masatake Ichikawa, Kariya, JP;
Shoji Omitsu, Toyota, JP;
Hiroshi Tsutsui, Aichi ken, JP;
Yutaka Teraoka, Anjo, JP;
Masatake Ichikawa, Kariya, JP;
Shoji Omitsu, Toyota, JP;
Aisin AW Co., Ltd., Aichi-ken, JP;
Abstract
If it is determined that a D range is in use and determined that a vehicle is stopped, neutral control means () commands and controls an engagement pressure of a clutch (C-) so as to achieve a state in which a piston of the clutch (C-) contacts a clutch drum by a biasing force of a spring, and a state in which oil fills an oil passage from a linear solenoid valve (SLC) to a hydraulic oil chamber and fills the hydraulic oil chamber. There is thus no drag loss in the clutch (C-) during a neutral control, and the same fuel economy as when, for example, a manual shift to the neutral range is made can be achieved during the neutral control.