Mounting structure of main bearing cap of automobile engine

摘要

The present invention relates to a main bearing cap mounting structure of an automobile engine installed in a cylinder block of an automobile engine to effectively mount a main bearing cap (Main Bearing Cap) supporting the main bearing to the cylinder block. Since the main bearing cap 10 'and the cylinder block 20' are interviewed in the horizontal plane, and each of the fastening bolts 30 'is fastened in the vertical direction, a load according to the driving of the crankshaft is applied to the main bearing cap 10'. In case of acting, the main bearing cap 10 'receives force to open to both sides, causing noise, as well as the deformation of the fastening bolt 30' and the risk of breakage of the main bearing cap 10 '. There was a problem that the bar, the fastening surface 21 is formed on the lower end of the cylinder block 20 as the inclined surface of the upper and lower down light, the inclined surface of the upper and lower down light corresponding to the fastening surface 21 on the upper end of the main bearing cap 10. Fastening surface (11) And fastening a pair of fastening bolts 30 in a vertical direction with the fastening surfaces 11 and 21 from both ends of the lower end of the main bearing cap 10 so that both fastening bolts 30 are fixed at an angle θ. According to the present invention characterized in that the clamping force can be exerted, the main bearing cap 10 or the fastening bolt 30 can be prevented from being damaged by the load according to the driving of the crankshaft, as well as the main bearing cap. It is possible to eliminate the noise due to the separation of (10) can be improved the reliability of the engine, it is possible to contribute significantly to improving the ride comfort of the car.