초록 ▼

A high compression ratio internal combustion engine operable on a fuel capable of being pressurized and vaporized to pressures above atmospheric pressure and having dual fuel introduction means respectively communicating with dual fuel sources. The first fuel introduction means is a low pressure fue

A high compression ratio internal combustion engine operable on a fuel capable of being pressurized and vaporized to pressures above atmospheric pressure and having dual fuel introduction means respectively communicating with dual fuel sources. The first fuel introduction means is a low pressure fuel supply means by which fuel is introduced into the engine at low pressure in a fuel/air ratio mixture lower than which supports self-ignition under the temperatures generated by the compression thereof within the combustion chamber of the engine. A secondary－or auxiliary－fuel supply is provided and is capable of introducing predetermined amounts of only fuel in an atomized state and at elevated pressures greater than the pressure developed on the compression stroke within the combustion chamber. This secondary fuel is introduced into the combustion chamber at elevated pressure－and depending upon the fuel－at elevated temperature, and in amounts sufficient to raise the effective fuel/air ratio within the combustion chamber sufficient to support the self-ignition therein by the elevated temperatures which are compression generated within the combustion chamber.

대표청구항 ▼

An internal combustion engine operable on a fuel capable of being atomized at pressures above atmospheric pressure, which comprises: (a) at least one piston and cylinder defining an internal combustion chamber of compression ratio sufficient to provide self-ignition with said fuel when mixed therein

An internal combustion engine operable on a fuel capable of being atomized at pressures above atmospheric pressure, which comprises: (a) at least one piston and cylinder defining an internal combustion chamber of compression ratio sufficient to provide self-ignition with said fuel when mixed therein with air; (b) intake means selectively communicating a first source of said fuel with said internal combustion chamber and operable in timed relation to piston stroke and position; (c) exhaust means operable in timed relation to piston position to selectively permit combusted gases to exit the cylinder; (d) means for selectively mixing fuel from said first fuel supply with air at relatively low pressure and for permitting said mixture to be introduced into said cylinder through said intake means during the intake stroke of the piston, the fuel/air ratio being less than the ratio required for self-ignition when the piston is at or near the top of the compression stroke; (e) auxiliary fuel supply means maintained at a predetermined elevated pressure, the pressure being greater than the pressure within the combustion chamber when the piston is at or near top dead center; and (f) valve means selectively opened and closed by means operatively linked to the crankshaft for selectively communicating said auxiliary fuel supply means with said combustion chamber and for selectively permitting a predetermined heated amount of said fuel under pressure to be introduced from said auxiliary fuel supply means into said combustion chamber in timed sequence such that when said piston is at a predetermined position at or near the top of the compression stroke of said piston, a predetermined amount of auxiliary fuel is permitted to be introduced into said combustion chamber sufficient to raise the fuel/air ratio therein to a level sufficient to cause governed self-ignition within said combustion chamber at the temperature caused by the compression of said first supply of fuel and air therein, whereby said first fuel and air mixture and said auxiliary pressurized and heated fuel supply results in substantial burning efficiency of the fuel therein thereby resulting in substantially improved efficiency of the energy output of said engine.