Method and system for diagnosing operation of an engine compression ratio changing mechanism
US10450983B2 · kind B2 · utility
12Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Dec 12, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems for diagnosing operation of a compression ratio adjusting mechanism are described. In one example, an output of a pressure sensor is sampled and an assessment of the engine's present compression ratio is made after adjusting sampling of the output. Engine operation may be adjusted responsive to whether or not degradation of the compression ratio adjusting mechanism is indicated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.