Automotive Air Conditioning Information Forum

As Band of Brothers we sometimes offer to complete a thought (scroll shedding).
Scroll compressors use one hard anodized scroll and one soft aluminum scroll.
A scroll system with several hundred hours will have aluminum gray oil due to the soft scroll conforming to the shape of the hard anodized ...

My city water department tests for leaks in the city sewer system with oil mist which has no smell.
Japaneese cars first designed HVAC with 100% recirculation instead of the 15% to 25% outside air (OSA) blend used by the big 3 in the MAX mode. My Ford uses some OSA to prevent gas fumes and has a ...

Wanted to attend SEMA.
The clutchless compressors usually have a weight advantage because the field coil winding and armature plate are eliminated. The system must be optimized to prevent compressor failure at low displacement OCR year round operation. I received a month of training on VDC and ...

bohica, iron sharpens iron.
We shared some really good AC engineering together over the years! Hope you get to Texas or I visit Las Vegas some sweet day.That was some important training for me for book authorship since I failed English. You gotta love the challenge of solving AC problems.
danev2 ...

Thanks, I learned a lot today
hotrodac

bohica 2xo
Roots with separator and Wankel have disappeared along with vane rotary. Speed pads are new to me.
Lots of R500 in TX tractors. Smell during service is obvious.
Agree that separator could be made (of aluminum) with little weight penalty smaller than a aluminum accumulator. I have a ...

The extra 3d wire on Hondas is a signal for the computer to know when the clutch is engaged.
hotrodac

I like oil separator also because it increases reliability and improved efficiency, but it comes with a weight penalty.
If MD uses a 28 Volt DC motor for compressor drive then my design (used for military vehicles) with a 85.7 cc swept volume, modified scroll clutch assembly, serpentine belt drive ...

Rotary wing AC ain't easy!
Challenge for copters is weight control of AC so fuel load can be optimized. Highest priority is cooling of electronics. Next priority is pilot and last is Passenger comfort as the lowest priority.
Parasitic energy draw of AC must be considered and will comprimise ...

I'd completely unrap the harness cover including the heat shrink tube around the diode and check the diode and wire accidental contact per common trouble shooting practice.
The diode is rated at 600 v (or better 800 volt) usually Motorola branded.
Arching of the battery terminals or arc welding ...