Two Stroke Engine Cycle
Two stroke engines have found widespread applications throughout the world whenever a simple, robust engine is required with a very high power to weight ratio. This 3D model uses colours and to show the various stages of the two stroke cycle in a typical two stroke engine.
Two Stroke Engine Typical Applications
- Outboard Boat Engines
- Leaf Blowers
Note: Although the two stroke engine is primarily used for small engine applications, it is worth remembering that two stroke engines are also the largest engines in the world. These large two stroke engines are used on merchant navy vessels and can weigh several thousand tonnes.
Two Stroke Engine Advantages
- The two stroke engine has considerably less parts (25-50% less parts) than a four stroke engine.
- The reduction in parts gives the engine a much simpler design than a four stroke engine.
- The weight of a two stroke engine is far less than a four stroke engine.
- Due to the reduction in weight, the two stroke engine has a higher power to weight ratio than a four stroke engine.
Two Stroke Engine Disadvantages
- The simpler design of the engine also leads to a drop in efficiency compared to a four stroke engine.
- Two strokes are generally noisier/louder than four stroke engines.
3D Model Components
This 3D model shows all major components associated with a typical small two stroke engine, these include:
- Spark Plug
- Cylinder Liner
- Piston Rod
- Gudgeon Pin
- Heat Exchanger Fins
- Transfer Port
- Air and Fuel Suction Port
- Exhaust Gas Port