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Common rail direct fuel injection is a direct fuel injection system built around a high-pressure (over 2,000 bar or 200 MPa or 29,000 psi) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors (or pump nozzles). High-pressure injection delivers power and fuel consumption benefits over earlier lower pressure fuel injection,[citation needed] by injecting fuel as a larger number of smaller droplets, giving a much higher ratio of surface area to volume. This provides improved vaporization from the surface of the fuel droplets, and so more efficient combining of atmospheric oxygen with vaporized fuel delivering more complete combustion.

Common rail injection is widely used in diesel engines. It is also the basis of gasoline direct injection systems used on petrol engines.


Common rail is a fuel injection system found in modern diesel engines. Common rail systems provide a level of flexibility which can be exploited for class leading emission control, power and fuel consumption. This enables Original Equipment Manufacturers (OEMs) to design for optimum performance and exceptional end-user value across a range of machines and applications.


crdi working

crdi meaning

crdi full form

crdi engine

crdi car

hyundai crdi engine

advantages of crdi system

crdi diesel engine

What is CRDI engine?
Diesel common rail direct injection
Common rail is a fuel injection system found in modern diesel engines. In common rail systems, the fuel is supplied to the engine under pressure with electronically controlled precision. ..

How does Crdi work?
The CRDi technology works in tandem with the engine ECU which gets inputs from various sensors. It then calculates the precise quantity of fuel and timing of injection. ... In the CRDi system, the fuel-rail constantly stores and supplies the fuel to the solenoid valve injectors at the required pressure


Is Crdi a turbo?
A CRDI abbreviation stands for Common Rail Direct Injection and is used by Hyundai Motor Group for their proprietary diesel engines with Common Rail direct fuel injection. CRDI engines are turbocharged power units installed on Hyundai and Kia vehicles.

Is CRDi engine good?
Better Fuel Mileage: Utilising a common rail for fuel delivery, CRDi engine are not gas guzzlers anymore. They provide great mileage which is how they outrank petrol engines in terms of fuel economy. ... CRDi engines are quieter. Increased Power: CRDi engines are powerful, very powerful

Who invented CRDi?
Robert Huber
The common rail system prototype for automotive engines was developed in the late 1960s by Robert Huber of Switzerland, and the technology was further developed by Dr. Marco Ganser at the Swiss Federal Institute of Technology in Zurich, later of Ganser-Hydromag AG (est. 1995) in Oberägeri.


What is the advantage of CRDI engine?
The main advantages of the common rail direct fuel injection can be summarized in reduction of exhaust and noise emissions, better fuel efficiency and improved overall engine performance. The system consists of a high-pressure pump, injectors, a rail, and an electronic control unit.

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