Invention Grant
- Patent Title: Cold start engine control diagnostic systems and methods
- Patent Title (中): 冷启动发动机控制诊断系统和方法
-
Application No.: US12353636Application Date: 2009-01-14
-
Publication No.: US08127744B2Publication Date: 2012-03-06
- Inventor: Robert J. Genslak , Edward Stuteville , Wenbo Wang , Wesley W. Wald
- Applicant: Robert J. Genslak , Edward Stuteville , Wenbo Wang , Wesley W. Wald
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F02P5/04
- IPC: F02P5/04 ; F02P5/15

Abstract:
An engine control module includes a spark control module, an engine speed module, a residual determination module, and a metric determination module. The spark control module actuates spark plugs based on a commanded spark timing. The engine speed module determines a desired engine speed based on an engine temperature and a period of time an engine is in operation after a cold start. The residual determination module determines a desired spark timing based on the desired engine speed, and determines a residual spark timing based on a difference between the commanded spark timing and the desired spark timing. The metric determination module detects a spark timing fault based on the residual spark timing and a predetermined spark timing range.
Public/Granted literature
- US20100175664A1 COLD START ENGINE CONTROL DIAGNOSTIC SYSTEMS AND METHODS Public/Granted day:2010-07-15
Information query