Two-way circulation type IC engine

The two-way circulation type internal combustion engine without water pump, water tank and fan has several air intake holes set on the cylinder body and the cylinder cover for installing air nozzles or air distributing pipes with nozzle; and heat insulating layer set outside the cylinder body. The air from the air compressor is first sprayed into the air jacket to absorb heat of the cylinder body,the cylinder liner and the cylinder cover, then made to enter the heat exchanger to absorb the afterheat of the exhaust and finally made to enter the air turbine to produce word, with the air after producing work being led to carriage for heating in winter. The exhaust gas from the internal combustion engine releases heat in the heat exchanger to air before being treated in exhaust gas treater orexhausted to atmosphere. At the outlet of the air jacket, a temperature controller is set to control the rotation speed of the air compressor based on the temperature of air from the air jacket.