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300 tdi turbo system - How does it work?

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stageonesimmo:
The pipe that goes to the FIP is there to allow the amount of fuel being injected into the cylinders to be varied in accordance with the amont of boost being produced - no point in bunging in loads of extra air (ie boost is compressed air - this means more oxygen) and then leaving the same amount of fuel - the more boost you have, the more fuel you want in the cylinders to make use of it.  This is done by the boost pushing on a diaphragm which pushes the fuel stop pin down as boost increases, allowing more ful to be injected.  Simply put.

RichardM:

--- Quote from: diggerdog36 on September 29, 2008, 09:58:53 --- But as hot gasses dont combust as well as cool gasses the compressed gas is sent through a heat exchanger (your intercooler) then into your cylinders.
  

--- End quote ---

Not quite, when the turbo compresses the air the temperature goes up and the volume goes up, cooling it also reduces the volume, allowing you to get more air in and if there is more air you can burn more fuel and if you burn more fuel you get more power out

see http://en.wikipedia.org/wiki/Charles%27_law

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