초록 ▼

An engine powered by fuel having a boiling temperature less than ambient wherein the fuel is stored as a liquid and delivered in the liquid state to a fuel injection system. The fuel is sprayed into the intake port region of a cylinder head as liquid droplets which then vaporize. The fuel supplied t

An engine powered by fuel having a boiling temperature less than ambient wherein the fuel is stored as a liquid and delivered in the liquid state to a fuel injection system. The fuel is sprayed into the intake port region of a cylinder head as liquid droplets which then vaporize. The fuel supplied to the injection system is maintained in the liquid state by a cooling system which maintains the liquid fuel below the boiling temperature. One cooling system includes a tube coiled around the injection system through which a refrigerant is circulated and cooled by a refrigeration system. A bleedoff conduit withdraws any excess fuel from the injection region and returns it to the fuel storage tank.

대표청구항 ▼

An internal combustion engine powered by a fuel of liquefied petroleum gas which comprises: a closed storage container for storing said fuel; at least one cylinder head which includes an intake port region communicating with a combustion chamber through an intake valve; a fuel injection rail includi

An internal combustion engine powered by a fuel of liquefied petroleum gas which comprises: a closed storage container for storing said fuel; at least one cylinder head which includes an intake port region communicating with a combustion chamber through an intake valve; a fuel injection rail including at least one fuel injector, all injectors operably connected to all intake port regions with one intake region connected to one injector whereby fuel may be injected into said intake regions; a conduit connecting said container to said injection rail; means for pumping said fuel from said storage container through said conduit to said injection rail and maintaining said fuel at a temperature below a temperature value and pressure above a pressure value required to sustain said fuel in a liquid state whereby said fuel in the liquid state is transferred from said storage container to said rail and is then injected as a liquid into said intake port region where it vaporizes and is admitted into the combustion chambers and is ignited.