Engine main bearing cover, matching method thereof and engine

Abstract

The invention belongs to the technical field of automobile engines, and particularly relates to an engine main bearing cover, a matching method thereof and an engine. The engine main bearing cover comprises a first main bearing cover, at least one crankshaft main bearing cover and a reinforcing rib, wherein one end of the reinforcing rib is connected to the first main bearing cover of the engine,and the other end of the reinforcing rib is connected to a second main bearing cover, a third main bearing cover, a fourth main bearing cover and the like; the reinforcing rib is connected to a portion between the first main bearing cover and the at least one crankshaft main bearing cover; and a boss which abuts against an engine timing cover is arranged on the end surface, which is away from thecrankshaft main bearing covers, of the first main bearing cover. The invention further discloses a main bearing cover matching method which is applied to the engine main bearing cover. According to the engine main bearing cover, the matching method thereof and the engine, torsional vibration and bending vibration of an engine crankshaft are reduced, vibration transmitted to the surface of the engine by the engine main bearing cover is also reduced, and the NVH performance of the engine is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, and in particular relates to an engine main bearing cap, a matching method thereof, and an engine. Background technique [0002] The main bearing cap of the engine is an important component of the automobile engine. It can restrain and support the crankshaft of the engine. The crankshaft of the engine rotates at a high speed when it is working, and it will bear a large torque, and there is a certain amount of torsional vibration and bending. Vibration, which in turn affects the NVH (Noise, Vibration, Harshness) performance of the car. In the prior art, each engine main bearing cap of the engine is independently installed on the engine block, and the installation rigidity of the independently installed engine main bearing cap is insufficient, which may cause the torsional vibration and bending vibration of the engine crank to become larger, and, The crank torsional vibration and bendin...

AI Technical Summary

Problems solved by technology

[0003] The invention solves the technical problems such as the poor NVH performance of the automobile caused by the engine main bearing cap in the prior art, and provides an engine main bearing cap and its matching method, and an engine main bearing cap.

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