1. Fuel Efficiency: Four stroke engines are more fuel-efficient than two stroke engines. In a four-stroke engine, the fuel is burned more efficiently during the power stroke, leading to better fuel economy. This advantage becomes significant in two-wheelers, where fuel efficiency is a crucial factor for daily commuting and long-distance travel.
2. Emissions: Four-stroke engines produce fewer emissions compared to two-stroke engines. In a two-stroke engine, a significant amount of unburned fuel and oil escapes during the exhaust cycle, contributing to air pollution. Four-stroke engines feature better combustion and have more efficient exhaust systems, resulting in lower emission levels and compliance with stringent environmental regulations.
3. Noise: Four-stroke engines are quieter in operation compared to two-stroke engines. The combustion process in a four-stroke engine is smoother and more controlled, generating less noise. Two-stroke engines, on the other hand, produce a distinct "putt-putt" sound due to their simpler design and faster combustion cycles.
4. Engine Life and Durability: Four-stroke engines generally have longer engine life and better durability than two-stroke engines. The separate strokes and better lubrication in four-stroke engines reduce wear and tear on engine components. This leads to extended engine life, reduced maintenance requirements, and improved overall reliability of the vehicle.
5. Low-End Torque: Two-stroke engines are known for their strong low-end torque, making them suitable for off-road applications and providing good acceleration. However, four-stroke engines offer better overall power and torque distribution across the rev range. This characteristic makes them more versatile for various riding conditions, including city traffic and highway cruising.
While two-stroke engines may offer a simpler design, reduced weight, and better low-end torque, the advantages of four-stroke engines, such as fuel efficiency, lower emissions, quiet operation, durability, and better torque distribution, make them a more suitable choice for two-wheelers in most practical applications.
