Frequently Asked Questions

What are the differences between gasoline engines and diesel engines?

A gasoline or petrol engine ignites compressed fuel and air by means of a spark. A diesel engine injects fuel into hot compressed air. The heat ignites the fuel without the need for a spark.

Diesel engines compress at up to double the compression of petrol engines, leading to better efficiency.

Most petrol engines mix the fuel and air outside the cylinder. In diesel engines the fuel is injected directly into the cylinder.

What is an alternator?

An alternator is a device that converts mechanical energy (something moving) to alternating current.

Alternators usually achieve this by means of a rotating magnetic field.

The word alternator refers to alternating current (AC) as a form of electricity as opposed to direct current (DC).


What are the differences between petrol engines and diesel engines?

A petrol (gasoline) engine ignites compressed fuel and air by means of a spark. A diesel engine injects fuel into hot compressed air. The heat ignites the fuel without the need for a spark.

Diesel engines compress at up to double the compression of petrol engines, leading to better efficiency.

Most petrol engines mix the fuel and air outside the cylinder. In diesel engines the fuel is injected directly into the cylinder.