Cold start engine control diagnostic systems and methods
US8127744B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2009 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Nov 10, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.