Common Rail Diesel
A breakthrough in diesel engine technology, the common rail direct injection (CDI) system delivers high torque output, at engine speeds as low as 1,500 rpm.
Simply explained, diesel fuel is injected under high pressure (ca. 1.350 bar) from a common rail for all cylinders. Advantage is lower fuel consumption, smoother run and cleaner burning of the fuel.
Whereas conventional direct injection diesel engines need to build up the fuel pressure over and over again for each injection cycle, in CDI engines the pressure remains permanently available in the fuel line.
Based on the instructions from the electronic engine management unit, the valves in the injectors govern both the injection timing and the quantity of fuel injected for each cylinder combustion chamber individually.