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:
Aug. 24, 2010

Filed:

Nov. 30, 2005
Applicants:

Kazuhiko Kitano, Saitama, JP;

Osahide Miyamoto, Saitama, JP;

Tomohisa Kaneda, Saitama, JP;

Inventors:

Kazuhiko Kitano, Saitama, JP;

Osahide Miyamoto, Saitama, JP;

Tomohisa Kaneda, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 57/04 (2010.01);
U.S. Cl.
CPC ...
Abstract

A hydraulic pressurizer system () comprises a drive source (an engineand a motor generator), which drives a hybrid vehicle (), a mechanical oil pump (), which is driven by the drive source, an electrical motor (), which is activated by a 12V battery (), an electrical oil pump (), which is driven by the electrical motor (), and a control unit (), which activates the electrical motor (). The pressurizer further comprises a ratio-change mechanism (), which is activated by hydraulic oil supplied by the mechanical oil pump () and by the electrical oil pump () to establish a speed change ratio, at which the rotational driving force of the drive source is transmitted to wheels () with a rotational speed change. For executing a control for stopping the drive source, the control unit () executes a cleaning operation, which operates the electrical oil pump () for a predetermined time before the stopping of the drive source.


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