Method of controlling combustion of diesel engine
US8849549B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 5, 2012 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of controlling combustion of a diesel engine may include a vibration measuring step of measuring engine vibrations, a measurement region setting step of setting a range where an LPP (location of peak pressure) is predicted from measured vibration data, a frequency transforming step of transforming a vibration signal to a frequency response function, a frequency integrating step of integrating the transformed frequency response function, an LPP detecting step of selecting a location of peak pressure from integrated frequency response function, an estimated value determining step of selecting LPP offset and SOC (start of combustion) offset by using the detected LPP, an error determining step of determining LPP value error and SOC value error by comparing the estimated LPP value and the estimated SOC value with a target LPP value and a target SOC value, and a combustion correcting step of correcting and controlling combustion by the determined errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.