TYPES OF FUEL INJECTION SYSTEM

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TYPES OF FUEL INJECTION SYSTEM


CRDe-
 CRDe or Common Rail Diesel Engine is another name (by Mahindra) for world-renowned 'Common Rail Direct Fuel Injection' technology. Many car manufacturers in India and world are using this technology with different names. You must have listened CRDI engines in Hyundai cars, TDCi in Ford (Fiesta diesel in India), Dicor (new Safari) in Tata and CDI in Mercedes. Hence CRDe is not something new, its being used extensively all over the world for a decade now. As we all know diesel is not as good fuel as petrol. It doesn't burn as easily as petrol so to make it burn inside cylinders, its sprayed into the cylinders, which then compressed and exploded. Problem with methodology is that the diesel and air fuel doesn't get enough compression and some of it remain unburnt which lead to poor fuel efficiency and poor performance of engine. In Common Rail Injection, a common rail (you can consider it as hollow tube or pipe) is connected to fuel storage. Diesel is stored at very high pressure usually upto 1600-1800 bar. Valves fitted in this common rail are used to inject this high-pressure diesel into cylinders. Since diesel already has very high pressure, it burns easily and more efficiently. This pressure doesn't depend on engine-speed, so this efficient combustion is there at low as well as high speeds. Since in Common Rail systems fuel-air mixture is burnt almost completely, engine becomes more fuel economic and power too goes up considerably. Since fuel is burnt more easily, the noise at the time of combustion is also lesser. These are the major advantages of a Common Rail system. Adopting Common Rail technology in diesel engines is becoming a necessity, that is why every car manufacturer in India is going for it. Mahindra and Tata are no exceptions. 


crdi,dicor,DDiS,Duratorq, Pumpe Duse Diesel comparing all of them which is the best diesel engine?

Here are all technologies of CRDi. Basic principle of operation is same for all. But since CRDi also has 6 generations now. Out of all these I feel Duratorq in Fiesta is best amongst all because this is a piezoelectrically controlled CRDi which has great precision and due to which great milage, best  performance is achieved.

DOES IT AFFECTS THE POWER DELIVERY OF THE CAR?

 All the engines  take advantage of latest Diesel technology i.e. Common Rail Direct Injection. All are superior in terms of performance, NVH and fuel economy, however, these parameters highly vary due to some external components like turbochargers and engine's tuning. For example a CRDi engine  producing 100bhp/250Nm and giving 13 kmpl of mileage with simple turbocharger may become a beast throwing 140bhp/325Nm and still giving 12 kmpl with some advanced turbocharger e.g. VGT and a little differed tuning configuration. 


Similar types of injection.

Pumpe duse-PD, Pumpe Duse InjectionAn injection system which uses a high-pressure radial piston pump that  pressures of 1,500 bars (22,500 psi).


It is the injection system used by companies like volkswagen, audi, skoda for their cars. It is present  in skoda laura but the laura doesn't have a crdi engine, it has a 1.9 litre tdi engine.
CRDe and pumpe duse of them are almost identical at working and design. Both of them use Solenoid/Piezoelectric fuel injectors and ECM as sole components. Both try to maintain a very high pressure for injecting the fuel in the cylinders. 

Abbreviation-

Crdi- common rail direct injection

Dicor- Direct injection common Rail.

DDiS- Direct injection common rail.

Basically all these are one and the same as different company use abbreviations they seem different to a layman.

Comments

  1. Anonymous10 November 2017 at 02:18

    Thanks for sharing these types of fuel injection system, before it, I never know about it. Please keep sharing information like this. Waiting for more posts.

    Valve Manufacturer

    ReplyDelete
    Replies
    1. Unknown23 November 2017 at 09:44

      welcome.If you want any information on a specific topic feel free to ask.

      Delete

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