What are the classifications of balance shafts?

Release time:

2024-01-04 10:06

1. Dual Balance Shaft Method

　　The dual balance shaft uses a chain drive to rotate two balance shafts, one of which has the same speed as the engine, eliminating the first-order vibration of the engine; the other balance shaft rotates at twice the speed of the engine, eliminating the second-order vibration of the engine, achieving an ideal vibration reduction effect. The dual balance shaft method is relatively complex, has high costs, and occupies a large space in the engine, typically used in large displacement motorcycles.

　　Another arrangement of the dual balance shaft is that the two balance shafts are symmetrically arranged at an angle to the cylinder centerline, rotating in opposite directions, with the same speed as the crankshaft, used to balance the first-order reciprocating inertial force of the engine. For example, the balance shaft on the 276Q engine is arranged as described above.

2. Single Balance Shaft Method

　　The single balance shaft uses a single balance shaft, working through a gear drive, driven by the crankshaft rotation to drive the connected balance shaft gear -> balance shaft driven gear -> balance shaft. The single balance can balance a significant proportion of the first-order vibration, leading to a noticeable improvement in engine vibration. Due to its simple structure and small space requirement, the single balance shaft method is widely used in single-cylinder and small displacement engines.

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2024/01/04 10:08

What is the function of the tensioner?

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