EXHAUST GAS RECIRCULATION DEVICE OF ENGINE

摘要

An exhaust gas recirculation device of an engine is provided to effectively cool EGR gas recycling from an air discharge machine to an air suction machine by using cold water of a water jacket. An EGR device includes a suction port(21), an EGR passage, an EGR valve(60), and a controller(50). The suction port is provided at a cylinder head(20) so that air is sucked into an air combustion chamber(30). The suction port is provided at one side thereof with an air introducing hole(24). The ERG passage includes a block EGR passage(71) for taking EGR gas discharged from an air discharge machine and a head EGR passage(72) to guide EGR gas into the air introducing hole of the suction port. The EGR valve is provided on the EGR passage to open/close the EGR passage. The controller operates the EGR value so that the EGR passage is open/closed based on a signal of a hydraulic air sensor. The block EGR passage passes through a water jacket of a cylinder block(10). The head EGR passage is formed in the water jacket of a cylinder head(20).