Car Engine Introductions

welcome to this blog which is concerned with everything to do with replacement parts for van and car engines.

The two main catagories of engines are petrol and diesel.

A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel. This means that diesel engines have a better fuel efficiency than a petrol engine and are designed to have more torque at lower speeds, but they tend to have a lack of torque and power at the higher speeds. Because of this lack of power at the high speeds the VW audi group invented the TDI (turbocharged direct injection) for models such as the Audi A4 Diesel . The TDI works by direct injection, where a fuel injector sprays atomised directly into the main combustion chamber of each cylinder therefore increasing power and torque.

A petrol engine is an internal combustion engine with spark ignition. The main difference between the two engines is the way they mix the fuel with the air. Because the fuel and air are pre-mixed before the compression in a petrol engine, it makes it run much faster than a diesel, but because of the limit on compression, it makes them considerably less fuel efficient. Petrol engines are popular amongst cars such as a Vauxhall Corsa Petrol.