STRUCTURE OF INTAKE PIPE PREVENTING CREATED BY OF ICING CAUSED BY OPERATION OF EGR

摘要

The present invention relates to a structure of an intake pipe to prevent the generation of icing caused by EGR operation. The structure includes an EGR pipe which connects the intake pipe with the EGR which cools an exhaust gas and resupplies it to the intake pipe, and a chamber which is formed with a double pipe comprising the intake pipe and a concentric axis, to raise the temperature of air inhaled by the intake pipe. Because a relative high-temperature cooling water flows in the chamber in the winter and low temperature conditions, the temperature of the intake pipe and the intake air is raised. A temperature difference with the recirculating exhaust gas is reduced. So, the generation of icing can be prevented.