[Vwdiesel] New TDIs...common rail injection

[jon]

Mark,

Thanks for the explanation. I know this is a VW list, but does anyone know
of the reliability of the Benz PD engines? I see
Dodge/Freightliner/Mercedes vans all over the place there days, so they
must be decent, if not good.

I still love the good old Bosch injected 5-cyl Mercedes engines of the
80's (and VW, too!!).

Jon

On Thu, 21 Jul 2005, Shirley, Mark R wrote:

> 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
> > _______________________________________________
> > Vwdiesel mailing list
> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
> >
>