Two-Cycle Engine:
* Oil-gas mixture: Two-cycle engines mix oil directly with the fuel. This creates a combustible oil-gas mixture that is sent to the combustion chamber.
* Lubrication: The oil lubricates the moving parts (piston, crankshaft, etc.) as it burns along with the fuel.
* Increased oil consumption: Because the oil burns with the fuel, it is consumed at a much higher rate than in a four-cycle engine.
Four-Cycle Engine:
* Separate lubrication system: Four-cycle engines have a separate oil sump and a dedicated oil pump. The oil is circulated through the engine, lubricating the moving parts, but it doesn't burn with the fuel.
* Less oil consumption: As the oil is not burnt, four-cycle engines have significantly lower oil consumption compared to two-cycle engines.
Why the Difference?
The reason for this difference lies in the design of the engines. Two-cycle engines are simpler and more compact, but they rely on mixing oil directly with the fuel for lubrication. Four-cycle engines, while more complex, allow for a more efficient and separate lubrication system.
Here's a simple analogy:
Imagine a car's engine as a machine with moving parts that need oil to function smoothly.
* Two-cycle engine: Imagine pouring oil directly into the car's fuel tank. As the car runs, the oil burns along with the fuel, keeping the engine lubricated.
* Four-cycle engine: Imagine having a separate oil reservoir and a pump that delivers oil to the engine's moving parts. The oil lubricates the engine but doesn't burn with the fuel.
This is why two-cycle engines require more oil because the oil is consumed as it burns with the fuel, while four-cycle engines use oil only for lubrication.
