This invention relates to two-stroke cycle slow or continuous combustion engines, in which ignition is effected by the heat of compression.
According to this invention the engine has two oppositely moving pistons arranged in the same cylinder. The rear piston and the air and fuel compressing pump pistons are connected to the crankshaft through return connecting rods.
Air for scavenging and for the formation of the charge is compressed in a double-acting pump and stored in a transfer pipe which opens into the cylinder through suitable inlet ports. Air for the injection of the liquid fuel charge, which is supplied by a vertical pump placed beneath the tandem cylinders of the engine, is compressed in the fuel-compressing pump, and transferred to the fuel-nozzle through a pipe.
A cam is provided for opening the fuel-valve and an eccentric for actuating the distributing valve of the air-compressing pump.