mattk
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Registered: 27th Feb 06
Location: St. Helens
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what is PD on VAG deisel engines?
I know its Pump Deuse or summat like that, but what does it actualy do and how is it different from other engines?
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Warren G
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Registered: 14th May 06
Location: Kent
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just means the fuel pump will fuck up coz there made of plastic.
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AndyKent
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Registered: 3rd Sep 05
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Hows this?
http://www.automobile.com/vw-to-switch-to-common-rail-diesel-technology-from-pd-tdi.html
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Mattb
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Registered: 2nd Feb 03
Location: Under your sisters bed
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PD injectors are different to normal common rail injectors because they have a cam acting on the injectors to pressurise the fuel inside them. Means the fuel is injected in at a much much higher pressure than normal - meaning better atomisation and better efficiency.
However VAG have now dropped the PD engines and gone to common rail - something to do with emmisions laws
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SVM 286
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Registered: 13th Feb 05
Location: pain
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quote:
Originally posted by mattk
what is PD on VAG deisel engines?
I know its Pump Deuse or summat like that, but what does it actualy do and how is it different from other engines?
Seperate solenoid operated pump injector per cylinder.
Atomises fuel at a pressure of one thousand and fifty bar.
Hence more efficiency and power.
More bang for one's buck so to speak Matt.
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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Edit, I'm talking shite.
[Edited on 18-09-2009 by alan-g-w]
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SVM 286
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Registered: 13th Feb 05
Location: pain
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 What did you edit Alan?
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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I found it hard to believe that the injectors on an engine could run 1050bar without making the world implode. Thought you might have meant 1050psi but I asked the dad (ex mechanic) and he confirmed it, that's fucking crazy pressures. Sorry for doubting you, just seemed ridiculous to me.
[Edited on 18-09-2009 by alan-g-w]
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bubble
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Registered: 24th Jan 04
Location: Darwin, NT Australia.
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vauxhall common rail can hold pressure at 1250 bar.
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SVM 286
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Registered: 13th Feb 05
Location: pain
User status: Offline
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quote:
Originally posted by alan-g-w
I found it hard to believe that the injectors on an engine could run 1050bar without making the world implode. Thought you might have meant 1050psi but I asked the dad (ex mechanic) and he confirmed it, that's fucking crazy pressures. Sorry for doubting you, just seemed ridiculous to me.
[Edited on 18-09-2009 by alan-g-w]
A ha, right It does seem ludicrous doesn't it. I can understand anyone doubting it to be fact as it is just a silly ammount of pressure.
I worked at volkswagen as a tech for two years and that's one of the few pieces of technical data i've remembered. I think it stuck because A) it's a bloody silly figure and B) I actually questioned the lecturer on the training course when he was giving out the figures because I thought it had to be a typo
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