Engine balance shaft

Abstract

The invention relates to a balance shaft structure, in particular to an engine balance shaft. The engine balance shaft is provided with a first balance block and a second balance block, wherein the first balance block is connected with the second balance block through a rotary shaft; the engine balance shaft further comprises a drive device which drives the second balance block to rotate relative to the first balance block, and the second balance block is rotated by taking the rotary shaft as a shaft. The drive device drives the second balance block to enable the relative angle between the first balance block and the second balance block to be adjusted, the adjustment to the whole unbalance amount of the balance shaft is achieved, therefore, the engine balance shaft changes the equilibrium rate of an engine during running, meets the requirement of different revolving speeds of the engine, can adapt to unbalance amount needed by different engines, and improves universality.

Description

technical field [0001] The invention relates to a balance shaft structure, in particular to an engine balance shaft. Background technique [0002] The engine balance shaft has been widely recognized and applied because it can balance the second-order reciprocating inertial force and overturning moment of the engine, reduce the vibration and noise of the engine, improve the durability and reliability of parts, and improve the driving comfort of passengers. Since the vibration of the engine is calculated, different engine parameters will require different balance forces to balance the engine, and the existing balance shafts are all fixed balance shafts for calculating the unbalance, and the balance rate cannot be changed, resulting in a balance The universality of the shaft is poor. In addition, the unbalance amount required by the engine at different speeds is also different. Although the difference is small, the balance shaft may cause resonance of the engine when the engine...

AI Technical Summary

Problems solved by technology

Since the vibration of the engine is calculated, different engine parameters will require different balance forces to balance the engine, and the existing balance shafts are all fixed balance shafts for calculating the unbalance, and the balance rate cannot be changed, resulting in a balance The universality of the shaft is poor. In addition, the unbalance amount required by the engine at different speeds is also different. Although the difference is small, the balance shaft may cause resonance of the engine when the engine is started, resulting in failure of the balance shaft and causing the engine to work worse

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