Fuel injection system for engines
US5950601A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/105
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In this fuel injection system, a larger-diameter portion and a smaller-diameter portion which constitute each intensifying piston are brought into contact with a convex surface, whereby the bending of the smaller-diameter portion can be prevented when an external force exerted on the larger-diameter portion causes it to incline. The smaller-diameter portion and larger-diameter portion are formed separately, urged by a return spring and engaged with each other. Even when an injector body is inclined due to an external force and thermal stress to cause the larger-diameter portion to nearly follow up the inclining of the injector body, a contact point of the flat bottom surface of the larger-diameter portion and the convex top surface formed on the smaller-diameter portion is merely shifted due to the rolling of these surfaces. Since the smaller-diameter portion does not receive a bending effect by the larger-diameter portion, inconvenience, such as a galling between the smaller-diameter portion and a bore-defining surface of a fuel supply body does not occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.