2006-06-08 19:49:16 · 18 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation
If yes/no then why?
2006-06-08 19:53:25 · update #1
If yes/no then why & how?
2006-06-08 19:53:29 · update #2
Yes.
Automobiles are equipped with various systems that we take for granted until they fail, and those systems affect gas mileage. Two systems that drastically increase fuel consumption are the electrical charging and air-conditioning systems. When the weather is hot and we turn on the air conditioner to keep cool, the electrical charging system is also operating the blowers that move the inside air and cool the engine's radiator. These loads on the engine outweigh the air density effects on the engine and those of the car moving through the air.
All industry-recognized test procedures used to measure fuel consumption characteristics specify that a vehicle be operated with the air conditioning system turned off
2006-06-08 19:52:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋
House... your answer is very questionable.
The air conditioning system places a large amount of drag/load on your engine because of your air conditioning compressor. The compressor is basically a pump that is operated when the a/c unit is on. Most newer cars have an idle control valve that will compensate for this increase in load by allowing more air(thus more fuel) into your engine. You may notice this happen when you turn your engine on. You will hear a loud click(that's the compressor locking in place to rotate with engine speed) along with a slight change in RPM's.
So more load on the engine, along with the engine ecu requesting more air and more fuel into the engine, means more fuel consumption.
2006-06-08 22:14:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
No more than you would with the heater on, because with the a/c on there is a clutch that forces air through the coolant system that causes the heater core to become colder instead of the temperature of the engine's coolant itself, thus causing cold air. So long as you don't have any vacuum leaks there shouldn't be any problems with the fuel consumption. the drag you experience when the air is on is due to the extra torque on the engine.
2006-06-08 19:57:57 · answer #3 · answered by HOUSE 1 · 0⤊ 0⤋
the flexibility of the a/c would not remember, it is basically regulating the fan velocity. The area that could "use gasoline" (this could be a delusion at first) is the compressor for the a/c, and that's the two on, or off, there's no diverse intensity point. even however, in certainty a/c would not decrease gasoline mileage. It does even however use horse ability, that can carry approximately a lag in acceleration, wherein case a lot of human beings will compensate by ability of urgent the gasoline pedal further to enhance up at their general fee. And as a lot of human beings be responsive to, the harder you improve up the richer the gasoline/air mixture, the extra gasoline is being fed on. So technically, a/c would not reason any exchange in performance immediately, even however circuitously it could.
2016-10-30 10:39:55 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Yes,
Every test ever conducted has shown that driving a vehicle with the air conditioner turned on uses more gas than driving with the windows. an air conditioner takes as much power to run, when the vehicle is at speed, as it normally takes to sustain a vehicle at 55 miles per hour (around 15-18 horse power) that number increases with the square of the engine's speed. the faster you drive, the more energy is needed to turn the air conditioner's compressor. The compressor is acuated by a vacuum or eletronic clutch so it basically uses no power when turned off.
You can't defeat the laws of physics!
2006-06-21 16:33:30 · answer #5 · answered by athorgarak 4 · 0⤊ 0⤋
Any speed over 45mph and w/ the windows down will increase fuel usage. The air drag on the open windows really hurts the air flow around the car.
Turning on the AC will consume more gas then when it is not running. But compared to the loss you get with the windows down it is far less usage. I think AC uses like 4% more gas where windows down uses like 19% more.
Cruise control is the best effect for saving gas. A foot that trails from 70mph to 78mph back to 70mph and repeat uses alot more gas then a cruise control that is held at 75mph, far less.
2006-06-19 06:19:08 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Most definitely.In general principle,everything requiring energy to operate needs a fuel source.All car electrics and gadgets will add to the amount of fuel used.So do luggage racks,incorrectly inflated oversized tyres,bald tyres and trailers.To conserve fuel,drive slowly,do not accelerate or slow down rapidly and do not carry any excess baggage.The more weight,the more gas.
2006-06-08 20:02:51 · answer #7 · answered by mystic_master3 4 · 0⤊ 0⤋
Yes. The engine turns a belt on the compressor. That pulley is disengaged when the AC is off, so it's not adding much resistance. Turn the AC on, the pully engages and the AC pump starts to turn... it uses the energy from the engine to keep the AC motor going.
How much gas it uses, I don't know.
2006-06-16 08:29:57 · answer #8 · answered by Funchy 6 · 0⤊ 0⤋
they tested this on mythbusters and the car used more fuel with windows down compared to ac on windows up and just windows up but if the car is stopping all the time like at traffic lights i would say it would use more fuel if the ac was on.
2006-06-08 19:54:11 · answer #9 · answered by nis 3 · 0⤊ 0⤋
Absolutely. Even headlights on will use more fuel, but
not easily measured as it is so slight. Faster speeds
also and tire press. and state of tune as well as load
in the vehicle and a host of other things.
2006-06-19 12:13:34 · answer #10 · answered by belate 3 · 0⤊ 0⤋