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they actually did announce the next generation TDIs.
the 2.0 ones will make 115 bhp and 135 bhp up from 90 and 110.
there's a small capacity increase, and more significantly they
will sport 16 valve (not 20 valve) heads.
there will also be a V6 TDI making about 150 bhp but with gobs
and gobs of torque.. (i seem to remember over 200+). this V6
TDI is planned for the big audis including the A8.
(source: CAR magazine)
i recently drove the 90 bhp passat TDI. while i felt that the performance
claims were somewhat over hyped, the car certainly did not feel slow, and
did not smoke when i floored it. vibrations were minimal. i'd pass on
the 90bhp one, but the V6 and the 135 bhp ones sound a lot more promising.
the TDI is also boasts tons of electronics. the engine computer will read
clutch, brake and accelerator readings. the "throttle" is drive-by-wire,
btw, all in the interests of reducing smoke and enhancing economy and also
to provide smooth take offs.
i found the drive by wire pedal a little strange. pressing it down does
not increase the revs. you have to release the clutch a little before the
electronics allow the revs to build!
the engine is so efficient that supplementary electric heaters have to be
added for HVAC.
all in all a very interesting engine. it's not "just another diesel".
there's the typical audi knack for innovation all over the place.