Why Don't Cars Use Diesel Engines?
1 Answers
Noise and increased vehicle weight are the reasons why cars do not use diesel engines, as detailed below: Noise: Diesel engines produce significant noise during combustion, accompanied by noticeable body vibrations, which reduces driving and riding comfort. However, when used in larger vehicles, the vibration sensation is less pronounced, and the power output is much stronger than that of gasoline engines. Increased Vehicle Weight: Diesel engines are heavier. If installed in small-sized household cars, they would substantially increase the vehicle's weight and also lead to higher fuel consumption. The difference between diesel and gasoline engines lies in the higher compression ratio of diesel engines. The higher the compression ratio of an internal combustion engine, the greater its working efficiency. Diesel engines have a higher compression ratio because only air is compressed during the process, preventing premature detonation even at high compression ratios. Additionally, diesel engines rely on the compressed air's own temperature to instantly ignite the injected fuel, requiring the air to be compressed above the diesel's auto-ignition temperature. Diesel engines require more compression to increase temperature. The compression ratio directly affects the engine's efficiency and torque, so diesel engines with higher compression ratios can deliver greater torque, making them more suitable for heavy-duty trucks.
