The following are some of the advantages of each type of engines:
2-CYCLE ENGINES (2 Stroke)
1. They have less moving parts than 4-CYLINDER ENGINES (4 Stroke).
2. They use a single cylinder which means they do not require any extra lubrication or maintenance.
3. These engines are very efficient and produce lower emissions than other types of engines.
4. They are usually cheaper to buy and maintain than 4-cylinder engines.
5. They are easier to start up and run smoothly than 4-cylinder engines.
4 CYCLED ENGINES (4 Stroke)
1. These engines have multiple cylinders which means there is a risk of overheating due to heat build up inside the cylinders when using them frequently like in cars where they are used all day long.
2. Due to their multiple cylinders, these engines are more prone to clogging up with dirt and debris during normal driving conditions.
3. Because of their high fuel consumption, they are often associated with higher rates of accidents and traffic jams compared to 2-cycle engines.
4. They usually cost more to maintain and operate than 2-cycle engines.
Which one is better?
The answer to this question will always be determined by the specific purpose of use. For example, using a 2-cycle engine to power a car is not very efficient because the engine would quickly overheat and stop working before long.
However, using a 4-cycle engine to power some of the tools used around the home is more efficient and less risky because you are not using the same machine for hours on end without any rest like you would in a car or truck.
Overall, it is up to the user to choose what they think will best suit their specific situation.
Sources & references used in this article:
- Emissions analysis of small utility engines (X Sun, G Brereton, K Morrison, D Patterson – SAE transactions, 1995 – JSTOR)
- Exhaust emissions from small, utility, internal combustion engines (BH Eccleston, RW Hurn – SAE Transactions, 1972 – JSTOR)
- … variable compression ratio and single stroke length mechanism or dual stroke length mechanism of reciprocating 2-cycle or 4-cycle internal combustion engine (MA Sokalski – US Patent 10,119,463, 2018 – Google Patents)
- Diesel emissions as related to engine variables and fuel characteristics (WF Marshall, RD Fleming – 1971 – sae.org)
- Engine control to meet emissions requirements on natural gas fired 2-cycle engines (LF Sharrah, CR Bomar – 1996 – osti.gov)
- Do All 2-Cycle Engines Like Ashless Oils? (JH Budd – 1962 – sae.org)
- Engine fuels (JS Wilkins Jr – US Patent 5,501,713, 1996 – Google Patents)
- The Development of a Durable, Cost Effective, Overhead Valve Train for Application to Small, 4-Cycle Engines (JG Conley, JK Olsen, K Kurihara, G Rickard… – SAE transactions, 1996 – JSTOR)