What is the difference between a three-cylinder and a four-cylinder engine?
1 Answers
The differences between a three-cylinder and a four-cylinder car are as follows: 1. Balance is different: For a 4-stroke engine, the main difference between a three-cylinder and a four-cylinder engine is the balance. The three-cylinder engine has poorer balance compared to the four-cylinder engine. 2. Ignition intervals differ: The firing order of a three-cylinder engine is generally 1-3-2, with an ignition interval angle of 240 degrees; the firing order of a four-cylinder engine is generally 1-3-4-2, with an ignition interval angle of 180 degrees. 3. Crankshaft balance differs: A three-cylinder engine uses a three-throw crankshaft, which can only achieve static balance without additional balancing measures and cannot achieve dynamic balance. A four-cylinder engine uses a four-throw flat crankshaft, which inherently achieves dynamic balance. 4. A three-cylinder car's engine has only three cylinders, while a four-cylinder car's engine has four cylinders: Generally, a four-cylinder engine runs more smoothly than a three-cylinder engine. 5. Cylinder bore and power performance differ under the same displacement: The cylinder bore of a three-cylinder engine is larger than that of a four-cylinder engine; in terms of power performance, a three-cylinder engine is more powerful than a four-cylinder engine.
