DIESEL ENGINE OPERATED BY FUEL INFERIOR TO IGNITION PROPERTYAND FUEL JET VALVE USED IN SAID ENGINE

摘要

The fuel system of a motor features injectors with separate inlets (8, 21) for main fuel and pilot fuel. Each injector has a single set of side nozzle holes (5) and an axially shiftable glider (10), which in a foremost extreme position closes off the nozzle holes. The main fuel can flow to the nozzle holes (5) through an internal glider hole (11, 13), which open into the wall of the slider and after a certain backwards movement of the glider stand opposite the nozzle holes. The pilot fuel can flow through a non-return valve (22) to a chamber (14) in front of the glider's foremost end face. A narrow hole (15) leads from the chamber to the glider hole. When the injection period ends upon the forward movement of the glider, this pumps the pilot fuel from the chamber (14) in to the glider hole (11, 13). As a consequence the main fuel which is injected in the first phase of each injection period contains a high amount of pilot fuel. Problem free ignition is hereby assured with minimal use of pilot fuel and with an uncomplicated assembly and direction of the fuel system.IMAGE