On Jul 27, 2006, at 1:21 PM, Kostas Kavoussanakis wrote:

> What happens to the air-con when stuck in traffic?

I'm wondering that myself.

I was over at the dealership the other evening when the first one  
came in for me (a long story ...) looking it over.

Since it was nearly 110 degrees F, we were sitting in the car with  
the power on, AC on. Blowers going, the car cooled down very quickly  
to a comfortable temperature and the AC kept things nice on its Auto  
setting. The drive batteries were relatively depleted. We were there  
going through all the gizmos on the fancy display for about an hour.  
About every ten minutes, the engine would start and run for two  
minutes, then shut down again.

I conjecture that the AC compressor is driven by the auxiliary drive/ 
generating motor. Since it consumes a lot less energy to drive just  
the compressor, even a low charge in the drive batteries is enough to  
keep the AC up nicely. Once the drive batteries fall below a certain  
charge threshold, the gas engine turns on to charge it up. (That same  
drive/generating motor also operates as the engine starter ... and  
there is no gas engine powered reverse gear, reverse is all done  
electrically.)

It is a fascinating car, something that I'll have a grand time  
studying. Mine (the second one) should be delivered August 5-10.  
Can't wait!

Godfrey

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