CRDI - Common Rail Direct Injection (Hyundai) CRDI means a common rail direct injection system. It is a type of fuel delivery system used in most cars and vehicles. In this system, fuel is taken out and delivered into the engine's combustion chamber. CRDI is the name used by Hyundai and other brands that call the same system different names. Like, DICOR , CRDE, and DDIS , the three are the same but are used by various companies like TATA , Mahindra , and Maruti . What is CRDI? CRDI is the most advanced form of fuel delivery system which is fully automatic and controlled by ECU . And here, ECU works on the data provided by the actuators and sensors. This system is mostly used by Hyundai( a motor company). Is CRDI and MPFI the same? No, both are different. CRDI is used in diesel engines whereas MPFI is used in petrol engines. Parts/components used in the CRDI system The main working components of the CRDI are: Fuel tank Fuel filter Pump Pressure Regulating Valve High-pressure Pu...