A Structure for Intermittent Operation of an Engine Balance Shaft

Abstract

The invention relates to an intermittent operation structure of an engine balance shaft, and solves the problem of output power waste of an engine caused by a traditional engine balance shaft always rotating along with a crankshaft. The device comprises a crankshaft and a balance shaft arranged in parallel, and is characterized in that a transmission wheel is arranged on the balance shaft; the transmission wheel and the balance shaft are rotationally connected by a bearing; the crankshaft drives the transmission wheel on the balance shaft to rotate through chain transmission or gear transmission; the balance shaft is connected with a slide connecting shaft through a spline; the slide connecting shaft can slide in the axial direction of the spline to realize combination and separation with and from the transmission wheel; and the engine is provided with an actuator for driving the slide connecting shaft to slide. When the engine needs no intervention of the balance shaft, the power input of the balance shaft is cut off, so that the mechanical efficiency of the engine is improved, the fuel economy of the engine is improved, and the oil consumption is reduced by above 2%.

Description

technical field [0001] The invention belongs to the technical field of engines and relates to an engine structure, in particular to an engine balance shaft intermittent operation structure. Background technique [0002] With the development of society, energy issues have become the focus of the country and the people. With the improvement of living standards, the per capita car ownership in my country is getting higher and higher. How to reduce the energy consumption of cars and achieve the goal of energy conservation and environmental protection is a strategic issue for automobile manufacturers. Automobile energy consumption is mainly generated in the engine, how to further reduce the energy consumption of the engine is an important focus to reduce the overall energy consumption of the automobile. During the operation of the engine, the balance shaft is directly connected to the crankshaft by the gear or the transmission chain, and is driven by the crankshaft; in this proc...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the balance shaft of the traditional engine always rotates with the crankshaft. Under some working conditions of the engine running at high speed, it is not necessary for the balance shaft to intervene to balance the vibration of the engine, but it will lead to the waste of the output work of the engine. It provides a A Structure for Intermittent Operation of Engine Balance Shaft

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