Invention Grant
- Patent Title: Method and apparatus to control operation of a hydraulic pump for an electro-mechanical transmission
- Patent Title (中): 用于控制用于机电传动的液压泵的操作的方法和装置
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Application No.: US12250296Application Date: 2008-10-13
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Publication No.: US08170762B2Publication Date: 2012-05-01
- Inventor: Michael D. Foster , Eric S. Tryon , Jy-Jen F. Sah , Ali K Naqvi
- Applicant: Michael D. Foster , Eric S. Tryon , Jy-Jen F. Sah , Ali K Naqvi
- Applicant Address: US MI Detroit DE Stuttgart US MI Auburn Hills DE Munich
- Assignee: GM Global Technology Operations LLC,Daimler AG,Chrysler LLC,Bayerische Motoren Werke Aktiengesellschaft
- Current Assignee: GM Global Technology Operations LLC,Daimler AG,Chrysler LLC,Bayerische Motoren Werke Aktiengesellschaft
- Current Assignee Address: US MI Detroit DE Stuttgart US MI Auburn Hills DE Munich
- Main IPC: F04B49/00
- IPC: F04B49/00
Abstract:
A method for controlling a hydraulic flow within a powertrain comprising an electromechanical transmission mechanically-operatively coupled to an engine adapted to selectively transmit power to an output, wherein the transmission utilizes a hydraulic control system serving a number of hydraulic oil consuming functions includes monitoring minimum hydraulic pressure requirements for each of the functions, determining a requested hydraulic pressure based upon the monitoring minimum hydraulic pressure requirements and physical limits of the hydraulic control system including a maximum pressure, determining a desired flow utilizing a hydraulic control system flow model based upon the requested hydraulic pressure, and utilizing the desired flow to control an auxiliary hydraulic pump.
Public/Granted literature
- US20090112423A1 METHOD AND APPARATUS TO CONTROL OPERATION OF A HYDRAULIC PUMP FOR AN ELECTRO-MECHANICAL TRANSMISSION Public/Granted day:2009-04-30
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