Accessory gear train layout structure at front end of automobile engine

Abstract

An accessory gear train layout structure at the front end of an automobile engine comprises a crankshaft pulley, an automatic tensioning pulley, an alternating-current generator belt pulley, an idler pulley, a water pump belt pulley, an air conditioner compressor belt pulley and a multi-wedge belt. The gear train only contains single-layer gear trains, and the air conditioner compressor belt pulley and the water pump belt pulley are respectively arranged on the same side of the crankshaft pulley and close to the side of an exhaust manifold; the alternating-current generator belt pulley is arranged above the crankshaft pulley and close to the side of an inlet manifold; the air conditioner compressor belt pulley and the alternating-current generator belt pulley are arranged on the two sides of the crankshaft pulley respectively; the automatic tensioning pulley is located between the crankshaft pulley and the alternating-current generator belt pulley; the idler pulley is located between the alternating-current generator belt pulley and the water pump belt pulley. The accessory gear train layout structure at the front end of the automobile engine meets the requirement of a condition machine through which a finished automobile selects or does not select air conditioner compression, the cost of the engine and the requirement for compact size of the finished machine are also taken into consideration, and a series of waste of manpower and development expenses caused by changes of an accessory gear train system at the front end is greatly reduced.

Description

technical field [0001] The invention relates to an automobile engine, and more specifically relates to an automobile engine front end accessory wheel train system. Background technique [0002] At present, air-conditioning compressors have been used in a large area. The air-conditioning compressors provide cooling and heating capabilities for the vehicle's air-conditioning. However, in some areas where the temperature is suitable, in order to reduce the cost of the vehicle, the air-conditioning compressor can be canceled for the vehicle. The wheel system of the front-end accessories of the engine has two forms in the conventional steps: one is that the pulleys of the air-conditioning compressor and other front-end accessories are driven by a belt, so that the size of the engine is more compact, but due to various reasons, such as front-end wheels The arrangement of the trains does not take into account the increase or decrease of the air conditioner compressor, etc. The fron...

AI Technical Summary

Problems solved by technology

The wheel system of the front-end accessories of the engine has two forms in the conventional steps: one is that the pulleys of the air-conditioning compressor and other front-end accessories are driven by a belt, so that the size of the engine is more compact, but due to various reasons, such as front-end wheels The arrangement of the trains does not take into account the increase or decrease of the air conditioner compressor, etc. The front end gear train of the engine cannot be changed at the same time that the whole vehicle needs or does not need the air conditioner compressor, except for the belt. This requires the existing front end accessories of the engine The gear train system needs to be redeveloped and designed, which will bring a series of design and development costs and waste of human resources.

[0003] The second is that the air-conditioning compressor is driven by a single belt. Although the switching of the air-conditioning compressor is considered in this way, the engine will add a belt, bracket, tensioner and crankshaft pulley from one layer to two layers, which will cause The cost of the engine and the increase of the engine and the enlargement of the axial dimension of the engine

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