Main bearing cover for IC engine

Abstract

The invention discloses a main bearing cap of gas engine, which makes use of connection to connect various bearing caps together so as to form the whole main bearing cap. In the whole main bearing cap the rigidity of main bearing seat of die-casting body is improved greatly. Mechanical deformation, thermal deformation and portrait vibration of body are decreased. The rigidity of main bearing cap, coaxiality and Cylindricity of the hole of main bearing are improved at a great extent so as to improve the pressure-bearing ability of bearing and decrease the abrasion of friction pair. In addition, back oil seal seat is cast on the main bearing cap and a boss is cast on the lower of main bearing cap to install filtering so as to decrease the parts number of gas engine, decrease mechanical machining faces, decrease the production cost and improve the production efficiency.

Description

technical field

[0001] The invention relates to a main bearing cap of an internal combustion engine. Background technique

[0002] The body of the internal combustion engine constitutes the skeleton of the machine, and all the main parts and accessories of the internal combustion engine are installed inside and outside the body. In order to ensure the reliability and durability of the main parts such as pistons, connecting rods, and crankshafts, their relative positions must be strictly maintained. The body bears very complex loads when the internal combustion engine is running: the gas pressure of the gas in each cylinder on the surface of the cylinder, the lateral force acting on the wall of each cylinder through the piston, the force on each main bearing through the crankshaft, and the support of the bracket to the internal combustion engine Reaction Force and Reaction Moment. The magnitude and direction of these forces are constantly changing with the operating conditi...

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