What are the dimensions of a balance shaft?
What are the dimensions of a balance shaft?
The amount of vibration also increases with engine displacement, resulting in balance shafts often being used in inline-four engines with displacements of 2.2 L (134 cu in) or more.
Why are balance shafts used in inline four engines?
Balance shafts are often used in inline-four engines, to reduce the second-order vibration (a vertical force oscillating at twice the engine RPM) that is inherent in the design of a typical inline-four engine.
How does the phasing of a balance shaft work?
The phasing of the shafts is such that the centrifugal forces produced by the weights cancel the vertical second-order forces (at twice the engine RPM) produced by the engine. The horizontal forces produced by the balance shafts are equal and opposite, and so cancel each other.
Do you need a balance shaft for a V6 engine?
In a straight-six engine and flat-six engine, the rocking forces are naturally balanced out, therefore balance shafts are not required. V6 engines are inherently unbalanced, regardless of the V-angle. Any inline engine with an odd number of cylinders has a primary imbalance, which causes an end-to-end rocking motion.
What is the operating principal of a balance shaft?
The operating principal of a balance shaft system is two shafts with an identical eccentric weight on each shaft. These shafts rotate in opposite directions to each other at twice the engine speed. The centrifugal forces result in vertical forces which are designed to cancel out the vertical second-order forces (at twice the engine RPM)…
Why is one balance shaft higher than the other?
This engine was the first to locate one balance shaft higher than the other, to counteract the second order rolling couple (i.e. about the crankshaft axis) due to the torque exerted by the inertia caused by increases and decreases in engine speed. In a flat-four engine, the forces are cancelled out by the pistons moving in opposite directions.
The phasing of the shafts is such that the centrifugal forces produced by the weights cancel the vertical second-order forces (at twice the engine RPM) produced by the engine. The horizontal forces produced by the balance shafts are equal and opposite, and so cancel each other.
What is the code for balance shaft repair?
Check with the dealer of you have this issue with either or both codes 1200 and 1208 as they may cover part of the repair.
