Dual fuel engine
AssigneePro-Staff Overload Enterprises Limited
InventorJoseph S. Foster
Life of this patent
Estimating the term…
Abstract
A uniflow dual fuel engine including a plurality of cylinders, a piston in each cylinder, inlet ports arranged around each cylinder to be uncovered by downward movement of the piston in the cylinder. Air is forced into the cylinder through the inlet ports and there is a fuel injector to pump diesel fuel into the cylinder. There is an inlet pipe extending into one end of the port of each cylinder to end immediately adjacent the interior of the cylinder and connected at its distal end to a gas source.
Claims11
In a uniflow dual fuel engine including a plurality of cylinders, a piston in each cylinder, inlet ports arranged around each cylinder to be uncovered by downward movement of the piston in the cylinder, means to force air into the cylinder through the inlet ports and a fuel injector to pump diesel fuel into the cylinder the improvement comprising an inlet pipe extending into one end of one inlet port of each cylinder to end immediately adjacent the interior of the cylinder and adapted to be connected at its distal end to a gas source;
- a seal located in said one inlet port and contacting the inlet pipe to maintain the inlet pipe in a defined position in which the inlet pipe's upper edge is spaced below the upper edge of the inlet port whereby downward movement of the piston allows air through the inlet ports before said one inlet port is uncovered and upward movement of the piston closes the said one inlet port before all other inlet ports are completely closed.
In a uniflow dual fuel engine including a plurality of cylinders, a piston in each cylinder, air inlet ports arranged around each cylinder to be uncovered by downward movement of the piston in the cylinder, means to force air into the cylinder through the air inlet ports, a fuel injector to pump diesel fuel into the cylinder and at least one gas inlet port to be uncovered by downward movement of the piston in the cylinder and communicating with a supply of gas, the improvement comprising the gas inlet port having its upper edge spaced below the upper edges of the air inlet ports whereby downward movement of the piston allows air through the air inlet ports before the gas inlet port is uncovered and whereby upward movement of the piston completely closes the gas cylinder port before the air inlet ports are completely closed.
Dependencies are inferred from the claim text.