CONTROL METHOD AND APPARATUS FOR GASEOUS FUELLED INTERNAL COMBUSTION ENGINE

摘要

Disclosed is a method and apparatus to create an environment within a combustion chamber of an internal combustion engine suitable for auto-ignition and combustion of a fuel that will not otherwise auto-ignite. Underhigh load conditions a pilot quantity of the fuel is injected in the combustion chamber of an internal combustion engine during the compression stroke of the piston. The quantity and timing of the fuel are chosen to heat anintake charge within the combustion chamber to a temperature at or above the auto-ignition temperature of thefuel by the time required for a main injection of the fuel to drive the piston during the power stroke. Generally, auto-ignition temperatures should be reached at or near top dead center of the piston. Also, disclosed is aninjector design to deliver the fuel in manner taught by the method.