Determination of fuel injector performance in chassis
US7025047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2004 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Sep 29, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
It is known that performance of actual fuel injectors tends to deviate from performance of a nominal injector as a function of rail pressure and on-time, due to such factors as machining tolerances of fuel injector components. In addition, performance characteristics of fuel injectors tend to change after they have been broken in. These changes can lead to unexpected inconsistencies with other engine components. For example, for those engines which utilize smoke limiting maps, when the injectors are not performing as expected, the injection adjustments that result from use of the smoke limiting maps can sometimes become fruitless. Therefore, the present invention includes two in-chassis strategies for evaluating fuel injector performance, including a bare acceleration test and a loaded fuel injector performance test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.