h a l f b a k e r yAssume a hemispherical cow.
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I do this manually. Not all the time, but sometimes. Downhill gradients are fair game as well. |
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Existing A/C systems don't appreciate being pulsed on and off like this, but with a bit of redesign that could probably be overcome; maybe some sort of pressure accumulator would do it. [+] |
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I do this manually too at stop lights, etc. [8th of 7], do you think doing this will shorten the life of my AC, or damage it in some way? |
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I don't understand what "focusing the inefficiency of AC with the necessity for braking" means. This may be a language problem. To me, you can focus on something, or perhaps focus a telescope, but how do you focus an inefficiency? |
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Is there something technical to braking that makes it cheaper to run the AC? Is there some reason that people who are braking need the AC more than people who don't? |
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It's possibly? cheaper in brake pad replacement costs (due to increasing time between replacements) in an automatic by sapping the power of the engine with the AC use. |
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I often depress the clutch & coast for a while before braking in standards, though. |
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//I often depress the clutch & coast for a while before breaking //
sp. "braking" (I hope)
But then you consume fuel running the engine.
A modern car will cut the fuel when the wheels are running faster than the engine, so coasting is a waste of fuel. |
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Ha! (I must have been thinking back about one of my first cars. They broke all the time). |
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AWL, I did not know that that was a feature of the fuel injection system. I feel kind of dumb for doing that now. |
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[jutta], air conditioning puts added strain on the engine, reducing fuel economy. The idea is to therefor only use AC when a reduction in fuel economy is inevitable, just as hybrid cars use the braking mechanism to generate electricity which is then stored in batteries for later use. |
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If you've ever driven a small (auto transmission) car, and switched on the AC while driving, you can sense the tangible pull on your engine. |
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Using your AC as a brake is not intended to reduce wear on your brakes, as I doubt any benefits would be measurable. The benefit would be the luxury of occasional & intermittent AC without the guilt of lower fuel economy. |
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Of course, if you are such an economical driver that you coast to a stop and never use your brake pads, then this is not for you. |
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Another note: I posted this in regards to an automatic transmission vehicle. I suspect a manual transmission version would be more elaborate, as MT drivers don't always just hit the brake pedal to slow down. |
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I've always wanted a switch that kills the AC whenever the clutch is depressed.
I hate forgetting the AC is on and coming off the clutch from a stop- in my poor little 113hp car, it makes all the difference. |
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