公开(公告)号：US20210025364A1

公开(公告)日：2021-01-28

申请号：US16520905

申请日：2019-07-24

Applicant: GM Global Technology Operations LLC

Inventor： Lei Hao ,  Wei Zeng ,  Chandra Namuduri ,  Sharon Xiaobin Li ,  Michael C. Zumbaugh

IPC: F02N11/08 ,  F02D41/06

Abstract: The present disclosure provides a system for reducing cold start emissions of a motor vehicle. A brushless DC motor is coupled to an engine for cranking the engine. In response to receiving a cold start signal from a cold start actuator, the motor controller activates the brushless DC motor to crank the engine for a cold start duration and increase fuel pressure. In response to a motor controller receiving an auto start signal from an auto start actuator, the motor controller activates the brushless DC motor to crank the engine for an auto start duration that is shorter than the cold start duration. In response to determining that the cold start duration or the auto start duration has expired, an engine controller activates the fuel delivery system to deliver fuel to the engine.

公开(公告)号：US10961971B2

公开(公告)日：2021-03-30

申请号：US16520905

申请日：2019-07-24

Applicant: GM Global Technology Operations LLC

Inventor： Lei Hao ,  Wei Zeng ,  Chandra Namuduri ,  Sharon Xiaobin Li ,  Michael C. Zumbaugh

IPC: F02D41/30 ,  F02N11/08 ,  F02D41/06

Abstract: The present disclosure provides a system for reducing cold start emissions of a motor vehicle. A brushless DC motor is coupled to an engine for cranking the engine. In response to receiving a cold start signal from a cold start actuator, the motor controller activates the brushless DC motor to crank the engine for a cold start duration and increase fuel pressure. In response to a motor controller receiving an auto start signal from an auto start actuator, the motor controller activates the brushless DC motor to crank the engine for an auto start duration that is shorter than the cold start duration. In response to determining that the cold start duration or the auto start duration has expired, an engine controller activates the fuel delivery system to deliver fuel to the engine.