公开(公告)号：US10337438B2

公开(公告)日：2019-07-02

申请号：US14872923

申请日：2015-10-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shengbing Jiang ,  Scott A. McCullough

IPC: F02D41/22 ,  F01N11/00 ,  F02N11/08 ,  B60R25/04 ,  F02N11/10

Abstract: A method for diagnosing a no-start fault of a vehicle push-button start system including a push-button switch, where the system starts a vehicle engine if the switch is pressed and a vehicle brake is applied. The method includes detecting that a no engine crank condition has occurred if the switch is pressed and the brake is applied, and if so, performs a no crank diagnosis. The method also includes determining that a starter control relay has not been enabled after the system is in a crank power mode, and if so, performs a starter not-enabled diagnosis. The method also includes determining that the starter control relay has been disabled before the engine is running, and if so, performs a start disable diagnosis. The method also includes determining that the engine has stalled within some minimum time after it has successfully been started, and if so, performs an engine stall diagnosis.

公开(公告)号：US20170096958A1

公开(公告)日：2017-04-06

申请号：US14872923

申请日：2015-10-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shengbing Jiang ,  Scott A. McCullough

IPC: F02D41/22 ,  F01N11/00 ,  F02N11/08

CPC classification number: F02D41/221 ,  F01N11/00 ,  F02D2041/228 ,  F02N11/0803 ,  F02N11/0822 ,  F02N11/108 ,  F02N2200/102 ,  F02N2300/2011

Abstract: A method for diagnosing a no-start fault of a vehicle push-button start system including a push-button switch, where the system starts a vehicle engine if the switch is pressed and a vehicle brake is applied. The method includes detecting that a no engine crank condition has occurred if the switch is pressed and the brake is applied, and if so, performs a no crank diagnosis. The method also includes determining that a starter control relay has not been enabled after the system is in a crank power mode, and if so, performs a starter not-enabled diagnosis. The method also includes determining that the starter control relay has been disabled before the engine is running, and if so, performs a start disable diagnosis. The method also includes determining that the engine has stalled within some minimum time after it has successfully been started, and if so, performs an engine stall diagnosis.