- 专利标题: Brushless electric starter system with closed-loop speed synchronization control methodology
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申请号: US15967915申请日: 2018-05-01
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公开(公告)号: US10408184B1公开(公告)日: 2019-09-10
- 发明人: Chandra S. Namuduri , Lei Hao , Suresh Gopalakrishnan
- 申请人: GM Global Technology Operations LLC
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 当前专利权人地址: US MI Detroit
- 代理机构: Quinn IP Law
- 主分类号: F02N11/08
- IPC分类号: F02N11/08 ; F16F15/30
摘要:
An electric starter system for a powertrain or other system having an engine includes a solenoid device coupled to a pinion gear, a brushless starter motor, and a controller. The starter motor has actual machine speed, and is connectable to the flywheel via the pinion gear during a change-of-mind event when a commanded engine auto-stop sequence is interrupted before completion. When engine speed exceeds a threshold speed and is less than a calibrated starting speed, the controller executes a method in which closed-loop speed control of the starter motor is enabled using the engine speed as a reference value until an effective machine speed is within a permissible speed delta of engine speed. The controller causes the solenoid device to translate the pinion gear into engagement with the flywheel and starter motor, disables closed-loop speed control, and commands the starter motor to start the engine.