Pre-chamber fuel admission valve diagnostics
US9631566B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Oct 27, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/1015
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The disclosure describes systems and methods of detecting a misfire in a cylinder of an engine. Such systems and methods may include determining a standard deviation for a crank angle location in a chamber of the engine, determining a standard deviation of the peak pressure in a chamber of the engine. If the standard deviation for a crank angle location is greater than a threshold value for the standard deviation for a crank angle, or if the standard deviation for the peak pressure is greater than a threshold value for the standard deviation of the peak pressure, an engine cylinder cut out check may be performed to identify one or more misfiring cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.