Device and method for detecting a leak in a cylinder of an internal combustion engine
US7860670B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Feb 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting a leak in a cylinder of an internal combustion engine, the internal combustion engine including a piston in the cylinder, the piston being attached to a crankshaft, includes a time interval determining unit which is designed to determine a first time interval in which the crankshaft passes a preset first angle segment before reaching the ignition top dead center of the piston in the cylinder, and to determine a second time interval in which the crankshaft passes a preset second angle segment after reaching the ignition top dead center of the piston in the cylinder, and a cylinder leak determining unit which is designed to detect a leak in the cylinder as a function of the first time interval and as a function of the second time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.