Practice question

What is the main characteristic of a Common Rail Diesel Injection (CRDI) system?

  1. It uses a single fuel injector for all cylinders to save cost
  2. It stores fuel at very high pressure in a shared fuel rail that supplies all injectors, allowing precise electronic control of injection timing and quantity
  3. It does not require any fuel pump
  4. It mixes fuel and air inside the fuel tank before delivery

Answer: B — It stores fuel at very high pressure in a shared fuel rail that supplies all injectors, allowing precise electronic control of injection timing and quantity

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: NAVTTC Auto Mechanic Practice Questions - NAVTTC Trade Test - Auto Mechanic Motor Vehicle Mechanic (Pakistan) Exam →