Invention Grant
US08655526B2 Method and apparatus for controlling operation of a hybrid powertrain during a key-on crank start event
有权
在键盘启动事件期间控制混合动力系的操作的方法和装置
- Patent Title: Method and apparatus for controlling operation of a hybrid powertrain during a key-on crank start event
- Patent Title (中): 在键盘启动事件期间控制混合动力系的操作的方法和装置
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Application No.: US12985526Application Date: 2011-01-06
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Publication No.: US08655526B2Publication Date: 2014-02-18
- Inventor: R. Travis Schwenke , Kevin J. Smith
- Applicant: R. Travis Schwenke , Kevin J. Smith
- 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: G06F17/00
- IPC: G06F17/00

Abstract:
A method for starting an internal combustion engine in a hybrid powertrain having an electric torque machine mechanically coupled to the internal combustion engine includes monitoring a temperature state of the hybrid powertrain, determining a maximum discharging power limit of the high-voltage battery corresponding to the temperature state of the hybrid powertrain, estimating an engine drag torque associated with the temperature state of the hybrid powertrain, selecting a preferred engine cranking speed associated with the estimated engine drag torque and achievable at less than the maximum discharging power limit of the high-voltage battery, and controlling the electric torque machine to generate a magnitude of motor torque output sufficient to crank the internal combustion engine at the preferred engine cranking speed.
Public/Granted literature
- US20120179312A1 METHOD AND APPARATUS FOR CONTROLLING OPERATION OF A HYBRID POWERTRAIN DURING A KEY-ON CRANK START EVENT Public/Granted day:2012-07-12
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