Common rail specialists

A Common Rail engine is designed to supply constant fuel pressure to electronically controlled injectors though a shared fuel rail. This means the fuel supply is not dependent on the engine revs.

A common rail system is built around four basic components:

1. A high pressure pump with pressure regulator and inlet metering value.
2. A rail which contains a pressurised reserve of fuel.
3. Injectors which inject precise amounts of fuel into the combustion chamber as required.
4. A Diesel Control Unit – the ‘brain’ of the system, which precisely controls injector flow and timing as well as rail pressure while continuously monitoring the operating conditions of the engine.