When it comes to engine design, there are two main options: the two-stroke and the four-stroke engine. The main difference between the two comes from their individual approaches to the combustion cycle. The 4-stroke engine requires 4 cycles, while the 2-stroke engine only requires 2 cycles. But apart from this design difference, how do they differ in terms of performance and functionality?
In terms of performance, the four-stroke engine is better, albeit marginally, when it comes to fuel efficiency. Thanks to its more complex design, the four-stroke engine is also much quieter compared to the noisier 2-stroke engine. The four-stroke machine is also more durable in terms of longevity. On the other hand, the 2-stroke engine is more powerful as its mechanism allows for more torque. Due to its much simpler design, it is also cheaper to repair, and its replacement parts tend to be more affordable.
Differences in Usage
Smaller appliances such as lawnmowers and weed whackers mostly use the two-stroke engine. Some outboard boat engines and smaller motorcycles also use 2-stroke engines. Motor vehicles, larger motorcycles, and other big mechanical appliances use 4 stroke engines.