Common rail specialists

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.

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