Fuel injection system for a mixture-compressing spark ignition internal-combustion engine
US4621604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Mar 28, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system for a mixture-compressing spark ignition internal-combustion engine has a fuel-metering device having a housing with a control cylinder arranged therein, a control piston having at least two control edges being rotatably and longitudinally slidably arranged in said control cylinder. One front surface of said control piston is acted upon by fuel and its other front surface interacts with a pressure spring. Between the control edges, the control piston is equipped with a control space area. The housing has an inflow opening for a fuel inflow pipe, an outflow opening for a fuel return flow pipe in which a pressure regulating valve is arranged, and an outflow opening assigned to a fuel injection nozzle. The outflow opening connected with a control opening in the control cylinder interacts with the control edges. The control space area has at least one recess at the control piston having a circular-arc-shaped area segment forming the control edges in order to provide a fuel injection system having a fuel-metering device of the initially mentioned type which is simple to manufacture and easy to assemble, exhibits high operational reliability and ensures an exact m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.