Nowadays petrol cars are using three-cylinder engines. There are many cars available in the Indian market with the use of Three-cylinder petrol engines. A number of cylinders define the total CC of a car. Probably, 4 cylinder engines will have a bigger engine that is higher CC. Naturally; a higher CC engine is more powerful than a smaller capacity engine.
Although 3 cylinder engines gained a bad remark in the 80s and 90s through rough running, advances in balancing engine and refinement have led to the three-cylinder engine a comeback. Let us know the difference between a 3-cylinder engine and a 4-cylinder engine.
Three-cylinder engine: Generally, people assume that three-cylinder engines are underpowered than the 4 cylinders, especially when AC is used. In 3-cylinder, four-stroke engines, one cycle of an engine consists of two rotations. A 3-cylinder has a different firing order to maintain its balance; the power in it is generated for every 120 degrees. The plus point of a 3-cylinder engine is perhaps the total material required to manufacture is lesser than 4- cylinder engine. The advantage of having a cylinder less is that it reduces the weight of the engine. This helps the manufacturers produce a lighter engine which can be translated to lower weight of the car. It can help manufacturers to opt of tighter packaging in the car. A 3 cylinder engine is much more fuel efficient. This is due to lighter weight and reduced frictional losses. This engine is light on the pocket, with one cylinder less; the overall parts functioning in the engine are lower. As we discussed earlier 3 cylinder engine makes power every 120 degrees, to maintain the correct orientation the crankshaft rotates in a way which causes a firing delay of 1/3rd of the cycle. In this cylinder, there is the difference in the way the crankshafts are arranged which is the reason it delays half a cycle between power strokes. The gap which is seen is the reason for noisy engine and rougher idling operation.
4-cylinder engine: The advantageous part of a 4 cylinder engine is that it is refined. All engines today have 4 stroke engines i.e., intake, power, compression, exhaust. Every stroke made in this engine, one cylinder is always in the power stroke and the rest of the three cylinders in different positions. This helps crankshaft a smooth motion which translates the engine operation to work without noise and smoothly. This engine makes power every 90-degree rotation of the crankshaft. This cylinder does not suffer any lagging in the order of firing as it is in a 3-cylinder engine. Its lowers RPMs work equally as it works with higher RPMs. If you are in need of a more refinement and quiet car, with the powerful engine capacity, then a four-cylinder engine will be a good choice. New Innova Crysta facelift comes with a four-cylinder petrol engine as well as a diesel engine. The variants of diesel are powered by 2495 cc, 2KD-FTV diesel which includes intercooler and turbocharged four-cylinder engines.