You might have seen in your cars and other vehicles written crdi engine or even might have heard of it. Have u ever thought what is it about? Here it is..
Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines.
On diesel engines, it features a high-pressure (over 1,000 bar/15,000 psi) fuel rail feeding individual solenoid valves, as opposed to low-pressure fuel pump feeding unit injectors (Pumpe/Düse or pump nozzles). Third-generation common rail diesels now feature piezoelectric injectors for increased precision, with fuel pressures up to 1,800 bar/26,000 psi.
In gasoline engines, it is used in gasoline direct injection engine technology.
CRDI ENGINES IN CAR MAKERS
The car makers refer to their common rail engines by their own brand names:
BMW's D-engines (also used in the Land Rover Freelander TD4)
Cummins and Scania's XPI (Developed under joint venture)
Cummins CCR (Cummins pump with Bosch Injectors)
Daimler's CDI (and on Chrysler's Jeep vehicles simply as CRD)
Fiat Group's (Fiat, Alfa Romeo and Lancia) JTD (also branded as MultiJet, JTDm, Ecotec CDTi, TiD, TTiD, DDiS, Quadra-Jet)
Ford Motor Company's TDCi Duratorq and Powerstroke
General Motors Opel CDTI and earlier DTI
General Motors Chevrolet VCDi (licensed from VM Motori; also branded as Ecotec CDTI)
Honda's i-CTDi
Hyundai-Kia's CRDi
IKCO's EFD which is one of the members of the EF family. Supplier TBD
Isuzu's iTEQ
Komatsu's Tier3, Tier4, 4D95 and higher - HPCR series Diesel engines.
Mahindra's CRDe
Mazda's MZR-CD (1.4 MZ-CD, 1.6 MZ-CD manufactured by joint venture Ford/PSA Peugeot Citroën) and earlier DiTD
Mitsubishi's DI-D (recently developed 4N1 engine family uses next generation 200 MPa (2000 bar) injection system))
Nissan's dCi, Infiniti uses dCi engines, but not branded as dCi.
Proton's SCDi
PSA Peugeot Citroën's HDI or HDi (1.4HDI, 1.6 HDI, 2.0 HDI, 2.2 HDI and V6 HDI developed under joint venture with Ford)
Renault's dCi and earlier dTi
SsangYong's XDi (most of these engines are manufactured by Daimler AG)
Subaru's Legacy TD (as of Jan 2008)
Tata's DICOR & CR4
Toyota's D-4D
Volkswagen Group: The 6.0 V12 TDI, 4.2 TDI (V8), 2.7 and 3.0 TDI (V6), 1.6, 2.0 TDI (L4) and 1.2 TDI (L3) engines featured on current Seat, Skoda, VW and Audi models use common rail, as opposed to the earlier unit injector engines.
Volvo 2.4D and D5 engines (1.6D, 2.0D manufactured by Ford and PSA Peugeot Citroen), Volvo Penta D-serie engines
Wärtsilä-Sulzer 14RT-flex96-C "largest reciprocating engine in the world" designed by the Finnish manufacturer Wärtsilä
PRINCIPLE
Solenoid or piezoelectric valves make possible fine electronic control over the fuel injection time and quantity and the higher pressure that the common rail technology makes available provides better fuel atomisation. In order to lower engine noise, the engine's electronic control unit can inject a small amount of diesel just before the main injection event ("pilot" injection), thus reducing its explosiveness and vibration, as well as optimising injection timing and quantity for variations in fuel quality, cold starting and so on. Some advanced common rail fuel systems perform as many as five injections per stroke.
Common rail engines require very short (< 1 s) or no heating up time at all and produce lower engine noise and emissions than older systems.
Diesel engines have historically used various forms of fuel injection. Two common types include the unit injection system and the distributor/inline pump systems.
Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines.
On diesel engines, it features a high-pressure (over 1,000 bar/15,000 psi) fuel rail feeding individual solenoid valves, as opposed to low-pressure fuel pump feeding unit injectors (Pumpe/Düse or pump nozzles). Third-generation common rail diesels now feature piezoelectric injectors for increased precision, with fuel pressures up to 1,800 bar/26,000 psi.
In gasoline engines, it is used in gasoline direct injection engine technology.
CRDI ENGINES IN CAR MAKERS
The car makers refer to their common rail engines by their own brand names:
BMW's D-engines (also used in the Land Rover Freelander TD4)
Cummins and Scania's XPI (Developed under joint venture)
Cummins CCR (Cummins pump with Bosch Injectors)
Daimler's CDI (and on Chrysler's Jeep vehicles simply as CRD)
Fiat Group's (Fiat, Alfa Romeo and Lancia) JTD (also branded as MultiJet, JTDm, Ecotec CDTi, TiD, TTiD, DDiS, Quadra-Jet)
Ford Motor Company's TDCi Duratorq and Powerstroke
General Motors Opel CDTI and earlier DTI
General Motors Chevrolet VCDi (licensed from VM Motori; also branded as Ecotec CDTI)
Honda's i-CTDi
Hyundai-Kia's CRDi
IKCO's EFD which is one of the members of the EF family. Supplier TBD
Isuzu's iTEQ
Komatsu's Tier3, Tier4, 4D95 and higher - HPCR series Diesel engines.
Mahindra's CRDe
Mazda's MZR-CD (1.4 MZ-CD, 1.6 MZ-CD manufactured by joint venture Ford/PSA Peugeot Citroën) and earlier DiTD
Mitsubishi's DI-D (recently developed 4N1 engine family uses next generation 200 MPa (2000 bar) injection system))
Nissan's dCi, Infiniti uses dCi engines, but not branded as dCi.
Proton's SCDi
PSA Peugeot Citroën's HDI or HDi (1.4HDI, 1.6 HDI, 2.0 HDI, 2.2 HDI and V6 HDI developed under joint venture with Ford)
Renault's dCi and earlier dTi
SsangYong's XDi (most of these engines are manufactured by Daimler AG)
Subaru's Legacy TD (as of Jan 2008)
Tata's DICOR & CR4
Toyota's D-4D
Volkswagen Group: The 6.0 V12 TDI, 4.2 TDI (V8), 2.7 and 3.0 TDI (V6), 1.6, 2.0 TDI (L4) and 1.2 TDI (L3) engines featured on current Seat, Skoda, VW and Audi models use common rail, as opposed to the earlier unit injector engines.
Volvo 2.4D and D5 engines (1.6D, 2.0D manufactured by Ford and PSA Peugeot Citroen), Volvo Penta D-serie engines
Wärtsilä-Sulzer 14RT-flex96-C "largest reciprocating engine in the world" designed by the Finnish manufacturer Wärtsilä
PRINCIPLE
Solenoid or piezoelectric valves make possible fine electronic control over the fuel injection time and quantity and the higher pressure that the common rail technology makes available provides better fuel atomisation. In order to lower engine noise, the engine's electronic control unit can inject a small amount of diesel just before the main injection event ("pilot" injection), thus reducing its explosiveness and vibration, as well as optimising injection timing and quantity for variations in fuel quality, cold starting and so on. Some advanced common rail fuel systems perform as many as five injections per stroke.
Common rail engines require very short (< 1 s) or no heating up time at all and produce lower engine noise and emissions than older systems.
Diesel engines have historically used various forms of fuel injection. Two common types include the unit injection system and the distributor/inline pump systems.
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