[Vwdiesel] New TDIs...common rail injection

[Shirley, Mark R]

No, the new engines have whats called Pumpe Deuse or PD for short.
Each injector has an integral pump, and is actuated by a lobe on the
camshaft.
Common rail injection is different, in that it uses electrically
operated
injectors and an engine driven high pressure pump that feeds a fuel
rail. 
Pressures are similar, and both have similar advantages, such as
multiple
injection events.  This can help minimize the severity of start of
combustion.
  

> -----Original Message-----
> From: vwdiesel-bounces at vwfans.com 
> [mailto:vwdiesel-bounces at vwfans.com]On
> Behalf Of jon
> Sent: Thursday, July 21, 2005 3:10 PM
> Cc: vwdiesel at vwfans.com
> Subject: [Vwdiesel] New TDIs...common rail injection
> 
> 
> 
> I was just chatting with the fellow at the local VW shop (not 
> the dealer)
> about TDIs. This has probably already been discussed to 
> death, but he told
> me the newer (past year or so) TDIs have common rail injection, with
> pressure around 20K PSI. Wow!
> 
> Build an injector tester for that pressure! ;-)
> 
> He also told me VW has had all sorts of problems with that 
> new TDI engine
> design.
> 
> Comments?
> (If I remember correctly, the "new" Mercedes diesels are also 
> common rail.
> Correct?)
> 
> Jon
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