Fuel injection system
US4220129A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The fuel injection system for a mixture compressing externally ignited internal combustion engine includes a flow sensing member (3) arranged in an air intake duct (1), the member (3) moving in accordance with the quantity of air flowing through the duct so as to actuate a fuel dispensing valve (7) and to dispense a quantity of fuel to fuel injection nozzles (9) of the engine. The pressure difference in the dispensing valve (7) is maintained constant by means of a pressure sensitive valve (11) and a differential pressure control valve (20). The differential pressure control valve has two chambers (22 and 23) separated from each other by a rigid wall (21) and include diaphragms (24 and 25) arranged parallel to each other. The diaphragms are maintained at a fixed spacing from each other by a bolt (33) and both diaphragms are actuated by springs (37) and (42) which urge the diaphragms against each other. The loading stresses of the springs can be varied according to engine operating parameters and can be adjusted by devices for full load fuel concentration and cold-starting fuel concentration, and also a device responsive to air pressure chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.