Date: 6 May 2003 17:36:47 GMT From: davehinznopsamcop.net Subject: Re: Okay, why?
Someone who looks an awful lot like Paul Halliday <pjghnopsamyonder.co.uk> wrote: > Okay, so the classic 900 heat vent control is powered by vac and has a > canister to hold vac when the car is in turbo. Why? Why not use a mechanical > setup, or an electric powered motor? Well, vacuum servos were part of Saab back as far as at least 1971, so I suppose that's what it was designed for. Turbo didn't show up until 1976/7, so rather than redesign the whole ventilation control system, they did the logical thing; added a vac canister and a checkvalve. > How far back into Saab's history does this innovation (if that is the word) > go? Is this setup still used on new/er Saabs? Which other cars use this > setup? I would think that any car that has a turbo/super charger would need to store vacuum for the times when the intake manifold has a positive pressure? > Inquisitive minds need to know. I take it then that something is amiss? Dave
 |
 |
 |
 |
 |
