Apparatus for intermittently atomizing and injecting fuel
US5713337A · kind A · utility
Inventor
Key dates
| Filing date | Sep 19, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for intermittently atomizing and injecting fuel with the assistance of air. The apparatus includes a cylinder (1) having a cylinder head (4) with a valve seat (5) and at a flow passage, a piston (2) driven within the cylinder by a rotating crankshaft (3), an injection valve (6) with a valve head (14) and a spring element (7) urging the valve head (14) into engagement with the valve seat (5) to close the flow passage. The injection valve generally includes an actuating surface (12) that cooperates with the piston (2) to mechanically open the valve (6) when the piston reaches the end of its compression stroke. As a result, the present invention delays the start of valve opening until the piston maximizes the atomizing pressure within the cylinder (1) thereby advantageously maintaining small fluid drop sizes and high velocity of the spray jet. Additionally an annular gap (16) around the valve head (14) directs the spray jet centrally into the combustion chamber (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.