A/C conversion to Sanden/R134

Ti Kan ti at amb.org
Tue Apr 15 15:52:22 EDT 2003


james accordino writes:
> Yeah, thanks Ti.  I was aware of Sanden.  Yes a very
> nice looking clean alloy cylinder.  Mounting and
> connections require a trip to the hose shop and some
> fab.  I just seemed to remember something at a
> junkyard that there was a newer, simpler and more
> effiecent alternative that was in a mass marketed
> vehicle.  I wonder what Nissan, Yokto and Mazda are
> running for compressors in their current vehicles?
> Anyone know?

In fact Audi now uses a new, high-tech compressor in some of the latest
models.  It has an externally-controlled "variable displacement" design
whereby the climate control ECU dynamically changes the wobble plate
angle inside the compressor to vary its effective displacement, in turn
changing the amount of refrigerant that is being pumped.  On these cars
there is no compressor clutch, making the A/C operation very smooth.
The compressor runs all the time, yet can dynamically go from full-tilt
to almost a "turned off" state (virtually no load on the engine) based on
the cooling demand.

-Ti
2003 A4 1.8T multitronic
2001 S4 biturbo 6-sp
1984 5000S turbo
1980 4000 2.0 5-sp
--
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Laboratories, Sunnyvale, CA. USA
  ///    ti at amb.org
 //////  http://www.amb.org/ti/
///




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