In-chassis engine compression release brake diagnostic test and electronic control module using the same
US6892569B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Apr 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
It is becoming more common for diesel engine cylinders to include an engine compression release brake that can utilize energy built up in the cylinder to provide additional braking for the vehicle. The present invention utilizes a software diagnostic test that is stored in an electronic control module to detect defects in the engine compression release brakes. In particular, the present invention operates a first portion of the engine cylinders in a power mode and a second portion of the engine cylinders in a braking mode and compares a resulting fuel injector response or engine response to an expected value to determine if one or more of the engine compression release brakes are performing as expected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.