BALANCING COMBUSTION FORCES

摘要

Engines have reduced the number of cylinders while constricting bores and increasing the stoke. This has increased the spaces between power pulses. Engines have also become more potent because they make more out of a cubic inch of displacement than ever before. This has increased stress on an engine and the hammering on the crankshaft. This fewer cylinder and longer stroke engine strategy are changing how crankshafts are being designed and manufactured. But, the journals and counterweights can only absorb and counteract only so much abuse. The forces of combustion can be dampened on either side of the crankshaft. At the rear of the crankshaft, the flywheel or torque converter can dampen some of the force. At the front of the engine, some manufacturers are using a harmonic balanced or crankshaft dampener.