In Reply to: Most automotive A/C systems do not use dryer/filters, MI-Roger [Profile/Gallery] , Mon, 25 Sep 2006 03:24:47

Automotive A/C systes that use an orifice tube for metering do use a suction line accumulator. My 2001 silverado has this type of system (known as CCOT - cycling clutch orifice tube). The compressor cycles off when the pressure in the accumulator drops too low and risks freezing the evaporator.
Here's a picture of this layout - http://img168.imageshack.us/img168/9756/img0459textau6.jpg

The Saab 9000 had a cycling clutch expansion valve system. This type of system uses a liquid line filter/drier. The compressor cycles based on a temperature probe stuck into the evaporator.
Here's a picture of this layout from my old 88 9000T
http://img130.imageshack.us/img130/8366/img0462textjb6.jpg

The Saab 9-5 uses a variable capacity compressor/expansion valve system. This type of system also uses a liquid line filter/drier. The compressor rarely (if ever) cycles during normal operation. Using a pressure sensor on the low side piping, the compressor will ramp up or down to maintain a set low side pressure of about 30psi.
Here's a topside view of the filter/dryer on a 2000 9-5 I-4. It is located behind the driver's side headlight.
http://img20.imageshack.us/img20/7564/img0469textqv3.jpg

Here's a view from the bottom.
http://img20.imageshack.us/img20/466/img0470textqf2.jpg


Also, almost every manufacturer of residental central ac systems put a liquid line filter/drier in the outside condensing unit as standard equipment.

Michael



posted by 65.31.12...

• where is the AC dryer/filter on a v6?, rsfeller, Sun, 24 Sep 2006 10:26:55
  • On an I-4, behind driver's headlight., 2000AERO, Mon, 25 Sep 2006 10:17:16
    • Re: On an I-4, behind driver's headlight., Les_H, Mon, 25 Sep 2006 11:36:40
  • Re: where is the AC dryer/filter on a v6?, SWEDECAR , Mon, 25 Sep 2006 09:13:55
  • Are you talking about the cabin filter?, B. Millar, Mon, 25 Sep 2006 03:51:06
    • maybe this will jog a memory or two..., rsfeller, Mon, 25 Sep 2006 08:59:03
    • wow! No I am talking about the Air Conditioning systems, rsfeller, Mon, 25 Sep 2006 08:53:27
      • Yes, I think you are correct....., MI-Roger , Mon, 25 Sep 2006 09:22:53
  • Most automotive A/C systems do not use dryer/filters, MI-Roger , Mon, 25 Sep 2006 03:24:47
    • Saabs do use a filter/drier, 2000AERO, Mon, 25 Sep 2006 10:11:36 <-- Viewing This Message
    • All cars I have seen so far use a receiver/dryer, SWEDECAR , Mon, 25 Sep 2006 09:17:29
  • your ?question? does not make any sense....n/m, Dean, Sun, 24 Sep 2006 20:06:56
    • really?, rsfeller, Sun, 24 Sep 2006 21:19:47
      • yes, really..., AlS, Sun, 24 Sep 2006 21:35:53
        • where is the AC system dryer/filter located on a V6?, rsfeller, Sun, 24 Sep 2006 21:51:21

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