초록

A two-stroke, two-cylinder internal combustion engine for use in portable applications has a cylinder head design, a fuel injection system and an ignition system which enables the engine to start and run on a fuel such as JP5 or DFM.

대표청구항 ▼

In a two-stroke internal combustion engine adapted to run on a diesel or a kerosene type of fuel, and including a piston connected to the crankshaft of the engine to move within a cylinder through a first stroke from a top dead center position to a bottom dead center position and through a second st

In a two-stroke internal combustion engine adapted to run on a diesel or a kerosene type of fuel, and including a piston connected to the crankshaft of the engine to move within a cylinder through a first stroke from a top dead center position to a bottom dead center position and through a second stroke from the bottom dead center position back to said top dead center position, the improvement comprising: means providing a cylinder head at the top end of the engine cylinder in the shape of an open bowl having a generally cup-shaped configuration including a sidewall portion, a spark plug positioned centrally within said bowl at the top end of the cylinder, and means for injecting fuel into the top end of said engine cylinder at a location between said spark plug and said sidewall portion, said fuel injecting means including an injection nozzle having a plurality of nozzle openings therein, said nozzle openings being constructed and arranged to discharge a plurality of plume-like sprays into the top end of the cylinder at a location within said bowl, two of said sprays being directed from said nozzle to diverge and pass along opposite sides of said spark plug, and additional sprays being directed from said nozzle against said sidewall portion or said cylinder head to be deflected therefrom back toward said piston and said spark plug to thereby form a cloud of fuel over said spark plug for good ignition.