What determines the duty cycle of the A/C compressor?

[ddongbap]

Originally Posted by Lafiro

Exactly.

Ok fact is, even though the light is on that says the A/C is on, does NOT mean it is engaged 100% of the time.

It only turns the compressor on for a certain amount of time, then turns it off for a certain amount of time. Either that or it does so by temperature somehow, depending on where the knob is turned too.

So for everyone to understand this:
You are is losing 20%(on our stock engine) or so of power when the A/C ( the compressor ) is engaged! And just to clarify one more time for everyone, the compressor is NOT engaged 100% of the time, but it cycles on and off.

This should be the end of people giving out wrong information.

ozmdd is right as well (post above mine).

I'm not trying to disprove the fact that the AC drains power. My point is that it doesn't drain THAT much power.

3WHP difference. The AC was turned on after a few dyno pulls. So the AC was off for a while. The air was ice cold during the first AC pull. So the AC had to be fresh. Now, this might just prove that the clutch engagement system is intelligent, and turns off the AC during high load?

Now, this part is me theory crafting. A lawnmower engine has 2-3ish HP. I don't think one of these would have any trouble powering a AC compressor. It kind of seems high price to pay to run the AC which'll take 20hp.

[Yaris Hilton]

Originally Posted by ddongbap

Now, this might just prove that the clutch engagement system is intelligent, and turns off the AC during high load?

Yes, actually most modern cars do disengage the AC compressor at or near wide open throttle.