Which two types of engines are commonly used in agricultural machinery?

The commonly used types of engines in agricultural machinery are diesel engines and gasoline engines. Diesel engines are favored in agriculture for their durability and fuel efficiency, especially in heavy machinery such as tractors, combine harvesters, and tillers. They provide the necessary torque for moving significant loads and can operate for long periods without needing to refuel, which is essential for agricultural operations.

Gasoline engines, while less prevalent than diesel in larger machinery, are still used in smaller equipment such as tillers, lawn mowers, and certain types of portable generators. They are generally lighter and can provide sufficient power for smaller tasks, making them practical for specific agricultural applications.

Other options, such as electric and solar engines, are limited in their application within agriculture due to power output limitations and reliance on continuous energy sources. Hydraulic engines exist but are more accurately described as hydraulic systems using fluid power rather than traditional combustion engines. Steam engines are largely obsolete in modern agricultural practices. Natural gas and propane engines serve niche markets but are not as widely utilized as diesel and gasoline engines in mainstream agricultural machinery.