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:
Feb. 04, 2014
Filed:
Jan. 19, 2010
John C. Schultz, Saline, MI (US);
Norman Schoenek, Novi, MI (US);
Kevin Michael Dougan, Plymouth, MI (US);
Edwin T. Grochowski, Howell, MI (US);
Daryl a Wilton, Macomb, MI (US);
Edward W. Mellet, Rochester Hills, MI (US);
John C. Schultz, Saline, MI (US);
Norman Schoenek, Novi, MI (US);
Kevin Michael Dougan, Plymouth, MI (US);
Edwin T. Grochowski, Howell, MI (US);
Daryl A Wilton, Macomb, MI (US);
Edward W. Mellet, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A hydraulic fluid circuit for a power transmission device includes a first hydraulic circuit segment fluidly decoupled from a second hydraulic circuit segment. A hydraulic pump includes a first fluidic pumping element and a second fluidic pumping element. The first fluidic pumping element fluidly communicates with the first hydraulic circuit segment. The second fluidic pumping element fluidly communicates with the second hydraulic circuit segment. The first fluidic pumping element is controllable to a first pump operating point to achieve a preferred high fluidic flow rate in the first hydraulic circuit segment. The second fluidic pumping element is controllable to a second pump operating point to achieve a preferred high fluidic pressure in the second hydraulic circuit segment.