Engine
US8494752B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2008 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Oct 13, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/28
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The purpose of the present invention is to provide an engine having a revision means which regulates rotation speed of each of cylinders while reflecting specific unevenness of rotation of each of the cylinders. With regard to an engine 2 having a plurality of cylinders wherein opening timing of each of injectors 3 can be controlled respectively, comprising an individual standard rotation speed output unit 30 which outputs individual standard rotation speed Nstdi of each of the cylinders following fuel injection of the corresponding injector 3 when all the injectors 3 are in normal state, an engine rotation speed sensor 6 which detects individual actual rotation speed Ni of each of the cylinders following the fuel injection of the corresponding injector 3, and a revision amount calculation unit 50 which calculates revision amount of fuel injection amount to each of the cylinders from the corresponding injector 3 based on difference between the individual standard rotation speed Nstdi stored in the individual standard rotation speed output unit 30 and the individual actual rotation speed Ni calculated by the engine rotation speed sensor 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.