2:00 KZfaqrs: My minimalistic $3k studio setup. Speedkart: Cardboad on the floor and used boxers.

Great underwear advise in the quarantine times :D

Brother, it's a goddamn shame your videos don't get more views. Everyone I've shown them to is amazed how easy it is to grasp a concept once its broken down, and you do a great job explaining stuff along with videos. Thanks for helping all of us learn!

Stumbled into this and had to watch. Brought back memories. Couple things: 1) this is not a variable swashplate, it's a wobble plate. Old GM V5 might have been one of the early variables to have this, but had a tendency to throw itself to full stroke at high rpm because of kinematic imbalance so it would have to declutch. Swashplate variables are much more controlled because they are kinematically balanced (high rpm they want to destroke). 2) control valve controls the stroke by changing crank pressure, not cylinder pressures. Low suction will cause valve open throwing discharge gases into crank and destroking. High suction will cause valve to close opening the crank to suction. There are some other control holes to ensure oil circulates. Non electric valves used a bellows or a diaphragm to sense suction pressure.

Good job. Thank you for this crash course on Variable Capacity Solenoid controlled A/C compressors.

Great video! I'm working on Denso 7SEU16C, which is a clutchless continuously variable compressor. The compressor shaft is spinning whenever the belt is turning (no clutch!), and a solenoid controls the swash plate angle. Because it doesn't have a clutch, you don't see the compressor engage as you can with the clutch versions, so sometimes the clutchless compressors get replaced because people think the compressor is toast (because they can't get the clutch to engage...but there is no clutch!). These clutchless variables also get overcharged because the gauge display doesn't have the "kick on, kick off" on the low side that you see with regular clutch compressors. So there are a little different. They are found on vehicles that have high-end climate control systems which don't require the driver to constantly change the climate controls (ie, you can set a temperature). The ECU can use engine rpm and all kinds of other info to vary the voltage to the compressor control valve (solenoid) to adjust the swash plate. So with these clutchless variables, you don't even see the engine rpm change when you turn the AC on. I'm replacing the control valve/solenoid on an old (2003) Denso clutchless variable because the solenoids get intermittent failures as they get older. Great video, and perhaps you can open up a Denso clutchless sometime! The one I'm working on is from an '03 Mercedes ML350, and they were put on a lot of MB's, Lexus, and of course Toyotas.

Love your videos, you are very knowledgeable and you explain relatively complex things very well, with a bit of humor thrown in. Watched this one in particular because the ac compressor in my son's car has never worked, had it checked and is receiving power, the guy at the shop said it would require a new compressor. It's a 2003 Honda Accord. Was looking at taking it in repair but now I'll buy the part on Amazon and do it myself, I feel confident in doing this now because your video has 'de-mystified' the compressor, it is nothing more than a pump and really relatively simple one (nevertheless a very clever design). Keep up the good work.

WOW. so basically it's like a variable valve lift. what's next? an AC compressor with v-tec.

Fantastic and fascinating overview of an A/C system!

That was really cool! I never expected that thing to look like that on the inside.

Great work mate Thanks! Saves me time taking one apart myself someday. The work that has gone into it is beautiful

Really terrific explanation of something most of us don't know much about but use every day.

Nice fast pace breakdown. Straight down to business with on boring intro. Good job !

thanx for video, really wanted to hear see something away from that god damn virus.

Man! Is there anything you don't know about car maintenance? you're really knowledgeable! 👍

Excellent work here. This is basically an early Calsonic's take at the Harrison V5 comp. They later switched to an even simpler design that yields a smaller and even more efficient compressor, by removing the front nutating plate (actually called a wobble plate) and attaching pistons to the rear plate (the swashplate) by means of hemispherical shoes rather than rods, and that is the CVC (Compact Variable Compressor) compressor equipped on my car (even though mine has a mechanical control valve that doesn't act upon any external input, it just senses both the suction pressure and the discharge pressure and tries to regulate them to optimal values). The dye is not necessarily a sign of diagnosis having been taken on the vehicle's AC; it's usually fitted every time a service is done to better diagnose a leak in case one springs soon after the service. Some OEMs even include it in the factory. Personally, i see enough oil inside to think that the compressor has been ran with a good refrigerant charge most of its life. There's some rust, maybe owner didn't care about replacing the dryer/a DIY kit has been used to "top up" the AC and/or the system has been kept open for some time in its life. 2:55 That's an HPRV valve that pops open whenever discharge pressure becomes too high for some reason. Oil drain bolt is located forwards, towards the front (hex nut at 1:36), in order to aid oil removal. 3:31 Not only the pistons are moving up and down; at that time, they're doing so in the lowest displacement the compressor can attain (as you can better understand at 5:28). Interesting behaviour (and design) because the Harrison V5's mechanism will be doing the exact opposite, i.e. it will be driving the pistons at their maximum displacement in the same condition. That means that the Calsonic compressor has a "softer" start (the control valve, however, soon restores maximum displacement by bleeding the crankcase pressure to the suction side, if required). The CVC compressor in my car has the same perk. Rotate the clutch hub by hand in a summer day and it will get increasingly stiffer to turn as you keep turning it. That's because the plate's angle relative to the shaft is decreasing and the pistons are trying to compress more refrigerant.

This guy is a scientist

Great job on showing the variable compressor internals. Using existing pressures and PCM controlled positioning, is important for DIY’s to know why low pressure switches stop compressor operation completely, protecting the compressor from failure due to loss of oil that ONLY flow with refrigerant. This is done to reduce engine load, increasing fuel economy, like alternator control, power steering 10% on the highway but 90% at slow speed for turning the steering wheel. Pressure switches are more important than ever, as we migrate from R12, R134 now R1234Y or what ever they call it this week. Please note the clutch coil when de-energized as mutual induction can produce 180 volts requiring a forward biased diode of 1/4 watt facing the positive wire. It can be located at the compressor, 10” up the harness or in a fuse box. Just food for future video if you have access to a labscope set to trigger at any signal above 90 volts. The same design is used to create hydraulic motors for hydrostatic drive systems but with some manual control of the rotary squash plate to control speed or even reverse. Thanks! ASE Master Tech since 1978 - Retired

Somehow I missed this one. Brilliant summary!

Very cool speedkar! Thank you, always watch your videos but particularly this one since I just had my AC serviced as it was leaking at the service ports but they drain the oil and vacuumed it down for the correct charge and I'm guessing they wanted to make sure that there was no moisture in the system. Watching a video like this makes me think of all them parts and how everything comes together to keep my ass cool in the summer!

Awesome design, thanks for the explanation on how it works.

Excellent video. Very informative 👍🏻

Good job champ, I’ve never seen one taken apart and I’ve been to auto tech school.

Excellent video as usual, thanks

I am always amazed how every system in a modern car is very complex than the engine itself. I used to think that understanding the ICE engine workings plus the transmission will make me a car guru. Now I am a disilusioned guy.

Another great video,you are are a smart guy.Keep them coming.

Great explanation!

Besides all the really cool tech infor (I plan to get certified from these videos) but a chance to see the family laundry aired.... Thanks for the humor and entertainment while learning about these complicated subjects.

You have the EE guy and then you have Speedkar. I prefer seeing tear downs along with the math and science over the whiteboard. Keep it up man.

Vidio mudah dimegerti.....thanks all. 👍👍👍good job

Superb video!

Brilliant explanation. Thank you 👍

Excelent explanation. Congrats

great video thanks.

Thank you

Great video thanks. 👍

very educative. Thank you regards

2:25 thanks for tip now i throw away 3/4 of my underwear

You deserve way more subscribers

thanks for this excelent vid , bro.!! I got one of those variable ac and my issue is it constantly turn off and on , i would say every 40 seconds or so , what could be the problem ?

Good job, very helpful❤❤.

Awesome video! 👌

Hey brother thanks for vídeo,Very good!!!!I'm from BRAZIL!!!

This is what we call a wobble plate compressor, a swash plate compressor is a little bit different.The ECV regulates the angle of the wobble plate or the swash plate through electromagentic pulms, the bigger the angle the bigger the efficiency of the compressor. This was not a drain screw but it was the overpressure relief valve which usually opens above 30 bar..it helpus understand wether there was an overpressure in the system and protects the a/c compressor at the same time, on the pistons there is a light layer of teflon for friction reduction, good video - now your stuff!

Ah, so that's why at idle the A.C. is not as cool as when I'm cruising along. It operates on the engine Rpm's. Great video. I'm a new subscriber, great channel.

Excellent breakdown and video.... Much appreciated👍 The a.c. compressor is basically a mini engine which is why it's best start it BELOW 2000rpm (idle preferred)

thanks for sharing this video.

Your the best!!

please where can I get the papers that you are showing ? even in digital form , it looks very useful

on the 4th day is wild 😂 are we still talking about compressors?

Such a great humour... Super

“Let me tell you what my brother taught me” this had me dying

شكرا لك اخي

That's not an oil drain. It's a pressure relief valve for if the system pressure gets too high.

Awesome video brother. Always wondered how they work and the added underwear joke was funny

good video .the valve plate has a broken leaf causing a loud banging big end bearing gone sound.

Good stuff

I'm replacing the idle bearing the next weekend or so, in addition I'm replacing the low side suction line. Would I benefit taking apart the AC compressor to clean it up and refill it with PAG 46 afterword's? Do you need any other seals? I bought an o-ring kit for the hoses, has about 16 o-rings.

I love the toothbrush and the underpants. That's a really nice idea

8 likes Good sharing

Is there anyway to know if you have a fixed o variable compressor by just looking at it? Maybe a sticker or a particural note to look for? Btw: love your videos, keep it up please

Man, don't do messy things like that on your studio. lol Great video as always.

Can I replace a fixed compressor with a variable one ? Will it work ? For Honda Civic 2004.

Excelente

Excellent videos as always but in this one you could have give a brief explaination what it does in car if you have the time

Ya brother is pissed @ you bringing out his business in various videos.... keep up the good work and useful info!

Can you put it back together?

I’m looking at wiring a 12V compressor in parallel with a compressor of this style. Would that control valve be closed when the compressor is off? I ask as I am wondering if I need a check valve to prevent this moving backflow while the other compressor starts. I also ask because finding this type of universal hvac check valve has been a chore, everything’s just hydraulic npt.

Do automobile A/C compressors need crankcase heaters? And if not, why? Thanks!

tnx

oh that's cool, the AC compressor is like a Duke Axial Engine or a I call it the "revolver cylinder engine"

This is really neat: a sort of continuously variable hydraulic transmission. I wonder if this same swash plate system has been used in other settings (in addition to helicopters). Also: did I miss something? How does the solenoid valve continuously vary the link between the input and output ports? I thought solenoids were usually all on or all off only.

@speedkar99 What’s more reliable? Fixed OR variable displacement piston a/c compressors?

00:19 Isn't the high pressure side the smaller one?

I love the way you fuck with you brother in ur vids

Awesome video man! Compressors look quite sturdy, what causes them to seize? I did a mistake by adding refrigerant to the system but I'm sure I did a mistake (the pressure reading of the freon can that I bought must've been wrong) and after driving for a day a weird friction sound appeared then the serpentine belt snapped.

I HAVE 2016 Silverado and my question is how to by pass my solenoid valve ,like the older compressor style? I DONT WANT VARIABLE PRESSURES, ANY WAY TO ELIMINATE THE VALVE?

More mechanical reviews please! I would LOVE to see you tear down a Fiat/Chrysler product or a money pit like BMW or Mercedes!

I would think that when the control valve closes, reducing flow, you would want a shorter stroke on your pistons, but it seemed like you were saying the opposite.

Can you make a variable compression Duke engine with this?

dear sir, can 8 get hold of the pdf file which you show inbetween, for better understanding, n280 valve, regards

Hahaha I love how in your videos you got a different piece of your brother clothing to clean with, that is too funny

Seems like your brother recently purchased this toothbrush 😂 and underbear

Excellent job profesor ! Even though I don't know your name, I think that you are a great teacher and a funny guy as well while making jokes with your brother' underpants! You are a bit faster while explainind Would you mind slowing down please Anyway I have learned a lot from you! Thank you!

Cluch type vdc compresser? Which car

Awesome! Very informative. I’m assuming this is what’s in a bmw compressor that doesn’t have a clutch

Your brother made so many sacrifices so that you may inform us of how cars work.

I have a Toyota vitz with a variable compressor that works great but a lot of owners have the issue of the compressor failing. Could you make a video explaining why it fails?

When your AC compressor has more cylinders than your engine xD

Excellent video. Now I know why my 08 Yaris lose 10 horses each time I turn on the AC. Is there such a thing as an all electric AC compressor?

Is that part of an axial compressor?

I thought I was the only one that used old underpants as shop rags.

why sometimes ac blows hot when car isn't moving it always happens with this type of ac compressor, after changing the electric valve it start back blowing cold but not for long

Good 👍👌

Thanks for the underwear tips!

great

I wonder what your thoughts on rebuilt ac compressors are.... Or if it's even possible to do it yourself?

I have one of these exact compressors sitting in my junk pile. May pull it apart before sending it to scrap.

If pressure of AC compressor not.enough resulted, what is the part to be supposed to replaced..? If, where the parts we can get..? Thanks

can i use one of these to make an air compressor?