| 摘要 |
1,235,514. Fuel Injection pumps. INTERNATIONAL HARVESTER CO. June 7, 1968 [June 14, 1967], No.27148/68. Heading F1A. A fuel injection pump for an internal combustion engine of the type in which the start and end of injection is controlled by a spill port 92, the piston 14 has two axially spaced circumferential grooves 94, 96, so that each stroke of the piston gives rise to a pilot and main injection. The piston 14 may be angularly adjusted to vary the injected quantities and the timing thereof. As shown, the groove 94 is inclined and the grooves 96 is of triangular shape in elevation, but in a modification Fig. 4 (not shown) the groove 94 is of isosceles triangular shape in elevation. |
