Injection arrangement for injecting pressure medium into a cylin

Details Injection arrangement for injecting pressure medium into a cylin Injection arrangement for injecting pressure medium into a cylin

1995-11-14

1996-09-03

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

With fuel pump

F02M 3704

Patent

active

055514022

ABSTRACT:
An injection arrangement for injecting a pressure medium, especially fuel, into a cylinder of an internal combustion engine, specifically a large diesel engine with several cylinders, comprising at least two injection pump elements (1a,1b) arranged in a common pump body (1) and arranged to inject the pressure medium into the same cylinder during at least one continuous injection period, each pump element (1a,1b) including a pump cylinder (7a,7b), a piston member (8a,8b) reciprocatingly movable therein and a pressure chamber (13,13a,13b). The piston members (8a,8b) receive their control from a cam race (5a,5b) of at least one cam arranged in a camshaft (4) or the like of the engine and the pressure chambers (13,13a,13b,13c) in the pump cylinders (7a,7b) are continuously in connection with each other. In order to determine the entire volume of the injection during said injection period as well as the speed and timing of the injection affecting it the piston members (8a,8b) are provided with control edges for the timing of the injection so that the control edge (10b) in one of the piston members (8b) determines the starting moment of the injection and the control edge (10a) in the other piston member (8a) respectively determines the termination of the injection during movement of the piston members (8a,8b) towards the direction of the pressure chambers (13,13a,13b,13c).

REFERENCES:
patent: 2001843 (1935-05-01), Kasley
patent: 2518291 (1950-08-01), Davids
patent: 2592367 (1952-04-01), Wood, Jr.
patent: 3974810 (1976-08-01), Yajima

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