Invention Grant
- Patent Title: Method and apparatus for controlling an electrically powered hydraulic pump in a powertrain system
- Patent Title (中): 用于控制动力系统中电动液压泵的方法和装置
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Application No.: US14068351Application Date: 2013-10-31
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Publication No.: US09174628B2Publication Date: 2015-11-03
- Inventor: Ali K. Naqvi , Patrick M. Prihoda , Eric S. Tryon
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: B60W10/08
- IPC: B60W10/08 ; B60W10/11 ; B60L15/20
Abstract:
A powertrain system includes a transmission employing an electrically-powered hydraulic pump providing pressurized hydraulic fluid to a hydraulic circuit. A method of operating the powertrain system includes monitoring a temperature of the hydraulic pump. In response to the temperature exceeding a threshold temperature, power output from an electrically-powered motor coupled to the hydraulic pump is derated, which includes decreasing rotational speed of the hydraulic pump and maintaining hydraulic pressure in the hydraulic circuit.
Public/Granted literature
- US20150120105A1 METHOD AND APPARATUS FOR CONTROLLING AN ELECTRICALLY POWERED HYDRAULIC PUMP IN A POWERTRAIN SYSTEM Public/Granted day:2015-04-30
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