Engine main bearing cap and its matching method, engine

Abstract

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. The engine main bearing cap includes: a first main bearing cap, at least one crankshaft main bearing cap and a reinforcing rib; that is, one end of the reinforcing rib is connected to the first main bearing cap of the engine, and the other end of the reinforcing rib is connected to the second main bearing cap, the third main bearing cap, fourth main bearing cap, etc.; the reinforcing rib is connected between the first main bearing cap and at least one crankshaft main bearing cap; the first main bearing cap is far away from the crankshaft main bearing cap There is a boss abutting against the engine timing cover on the end face. The invention also discloses a main bearing cap matching method, which is applied to the above-mentioned engine main bearing cap. The invention reduces the torsional vibration and bending vibration of the crankshaft of the engine, and also reduces the vibration transmitted from the main bearing cover of the engine to the surface of the engine, thereby improving the NVH performance of the engine.

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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