What are the differences between three-cylinder and four-cylinder engines?
1 Answers
Engine The differences between three-cylinder and four-cylinder engines are as follows: Different size and weight: The three-cylinder engine is smaller and lighter, which can reduce the overall vehicle weight. Its smaller size also saves space in the engine compartment, providing room for electrification components, which is beneficial for the overall vehicle space layout and aligns with the lightweight body design concept. In contrast, the four-cylinder engine is slightly heavier. Different fuel consumption: Due to its structural advantages, the three-cylinder engine excels in fuel consumption control. Its smaller size results in higher power density and improved thermal efficiency. The three-cylinder engine has lower pumping losses due to its structure, and its smaller cylinder block reduces friction losses during operation, leading to lower heat dissipation losses and more noticeable fuel economy. On the other hand, the four-cylinder engine, regardless of displacement, has one more cylinder, which may increase fuel consumption to some extent. Different power performance: Within the displacement range of 1.0L to 1.5L, the three-cylinder engine has larger single-cylinder volume compared to the four-cylinder engine of the same displacement due to fewer cylinders, resulting in better low-speed torque. Fewer cylinders mean less mechanical friction, and increasing the number of cylinders may reduce single-cylinder efficiency. The three-cylinder engine offers faster power response and stronger performance compared to the four-cylinder engine.
