Hot pilot fuel ignited internal combustion engine and method of

Details Hot pilot fuel ignited internal combustion engine and method of Hot pilot fuel ignited internal combustion engine and method of

1991-12-27

1992-11-17

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123304, 123575, F02D 1908, F02B 300

Patent

active

051633973

ABSTRACT:
The temperature of a small amount of pilot fuel is greatly increased prior to injection into a combustion chamber. In all forms, the injection nozzle has a heating space for heating pilot fuel and which is in communication with both a main fuel orifice and a pilot fuel orifice. The pilot fuel orifice is always open, while the main fuel orifice is periodically closed by a needle valve. In a modified form, the nozzle includes an extension which extends into the combustion chamber and has the heating space therein. The main fuel orifice and pilot fuel orifice are formed in the extension. When the needle valve is in closed position, it closes the main fuel orifice and also prevents communication between the heating space and the associated fuel injection pump.

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