| 摘要 |
In an engine 70 including an EGR apparatus 91 which refluxes a portion of exhaust gas from an exhaust manifold 71 to an intake manifold 73 as EGR gas, it is an object of the present invention of the application to improve assembling operability of a differential pressure sensor 163 which detects a differential pressure between intake pressure of the intake manifold 73 and exhaust pressure in the exhaust manifold 71. According to the engine 70 of the invention of the application, the differential pressure sensor 163 is mounted on a head cover 160 which covers an upper portion of a cylinder head 72. An intake pressure taking-out passage 166 which is in communication with the intake manifold 73 is formed in the cylinder head 72. An intake pressure introducing passage 169 which is connected to the differential pressure sensor 163 is formed in the head cover 160. The intake pressure taking-out passage 166 and the intake pressure introducing passage 169 are in communication with each other. According to this configuration, a stay which is for exclusive use for mounting the differential pressure sensor 163 and an external pipe for taking intake pressure into the differential pressure detecting means 163 become unnecessary. |
