Thread: New Skoda

can anyone help what is the diffrence between the cr and pd what dothey stand for and whats diffrence ta

Originally Posted by tango7

can anyone help what is the diffrence between the cr and pd what dothey stand for and whats diffrence ta

Popped on another site and asked for you this was the reply which sound viable
I belive:
PD=Pumpe Duse = 1fuel pump per injector
CR=Common Rail = 1fuel pump for all injectors

A commonrail engine has one fuel pump that pressurises fuel across a rail ('common' to all cylinders). Solenoids in the injectors enable fuel delivery and therefore the computers in control of pressure, delivery quantity, and can even have multiple injection events in one power stroke.

A PD system is not too dis-similar, the main difference being in pressure generation. The PD has a 'pump per cylinder', in simple terms it's like a plunger that is pressed by the lobes on a cam. Fuel delivery is also controlled by electronic solenoid - they advantage of this system is that it can typically create very high injection pressures.

Hope that helps.

In practice, in the VW -Audi group engines,
Engines with the CR tag have a much higher ratio of Power to size. and lower emmissions for the same power output.
The 1.9L Diesel engines with the PD were the "Greenline" / "Bluemotion" engines. now it's 1.6 CR engines which are put in these cars.
The power of these engines is similarly higher., by up to 40 HP on the same engine size.
A good comparison can be made looking at the differences between the Superb Saloon engines and the Superb Estate engines (or the Audi A6 or VW Passatt engines. - The superb Saloon still (Feb 2010) has the older 2008 engines, where the estate version and the cars from VW and Audi have the newer CR engines.
Within the Superb Saloon model, the CR engine boosts a 140 HP engine to 170 HP where they are both otherwise 2L engines.