Combustion chamber and nozzle arrangement for direct fuel injection type diesel engine
US4108116A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1977 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Jun 6, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A quadrangular combustion cavity V in the crown of a diesel engine piston is offset from the center thereof, and the position of the fuel injector nozzle is also offset relative to the center of the cavity to accomodate enlarged intake and exhaust valves. The rotational orientation of the nozzle and cavity are geometrically determined such that: PA1 A. the fuel distances J.sub.1, J.sub.2 and J.sub.3, J.sub.4 are equal, PA1 B. the angles between a line A connecting the geometric center C.sub.1 of the cavity and the center C.sub.2 of the nozzle, and fuel jet directions J.sub.1 and J.sub.2 are equal, as are the angles between line A and fuel jet directions J.sub.3 and J.sub.4, and PA1 C. the difference between the maximum jet distance J.sub.1 and the minimum jet distance J.sub.3 is minimized The distances from the four fuel impingement points Z.sub.1 - Z.sub.4 on the side walls of the cavity to the respective corners of the cavity are also equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.