What is the Difference Between a Three-Cylinder and a Four-Cylinder Car?

[Fitzgerald]

The differences between a three-cylinder and a four-cylinder car are as follows: 1. Balance is different: The three-cylinder engine uses a three-throw crankshaft, which can only achieve static balance without additional balancing measures, not dynamic balance; the four-cylinder engine uses a four-throw flat crankshaft, which can inherently achieve dynamic balance. 2. Ignition intervals differ: Within adjacent ignition intervals, three cylinders simultaneously consume power over a 60-degree crankshaft angle; in a four-cylinder car, the power strokes of each cylinder are closely connected without intervals. 3. Engines are different: A three-cylinder car has an engine with three cylinders; a four-cylinder car has an engine with four cylinders.