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Thread: Toyota Etios query

  1. #16
    Resident Lead Bender Ockie's Avatar
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    Quote Originally Posted by daveza View Post
    So what are the effects apart from the drop in performance - any difference in fuel consumption when using the air-con ?

    It just feels like the engine needs to work harder, how would this affect the engine say from a Cape Town to Jhb trip with air-con on all the way ?
    Any aircon will put more strain on your engine and make it work harder. Even in big engines this will be the case, though the actual physical difference wont be as noticable to you as the driver, it will show in your fuel consumption.

    I have read about cars with electric aircons, but I am sure they too will use more fuel as the power must still come from the engine, be it with a belt that turns the compressor, or electricity from the alternator. I can just imagine that with electric aircons the effect of what it has on the engine power response that you might notice as the driver will be less. Perhaps I am completely wrong.

    If you are on the highway in the city or on the open road to nowhere, then the fuel consumption increase due to the aircon should be less as the car has picked up momentum already and stays at a relatively constant speed compared to in the city where you constantly have to stop and pull away again. That is why they say rather use your aircon when on the highway compared to driving with windows open as the drag caused by open windows could actually have a bigger impact on fuel consumption compared to a aircon that is happily chugging along with a engine that is cruising at highway speeds.
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    What normally happens on little cars is the aircon kicks out when one pushes the accelerator down, then kicks back in when you ease off again.
    Up to 6 KW can be used by the aircon, this is a huge amount of power loss on tiny motors. The throttle position sensor normally controls the ac on of relay.
    There's your problem. Stoners are like brain damaged sloths on Prozac. Short of using them as garden gnomes - they have no real function.

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    So would it cost so much more for the air-con to be electrically powered as with the Yaris ?
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    Resident Lead Bender Ockie's Avatar
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    Quote Originally Posted by Spliffcat View Post
    What normally happens on little cars is the aircon kicks out when one pushes the accelerator down, then kicks back in when you ease off again.
    Up to 6 KW can be used by the aircon, this is a huge amount of power loss on tiny motors. The throttle position sensor normally controls the ac on of relay.
    My car has a ECONOMY option for the aircon. Even with that on though you can still feel the loss of power. I guess it is just less.

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    Last edited by Ockie; 14-02-2018 at 01:53 PM.
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    Grandmaster Spliffcat's Avatar
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    Just turn off the aircon when you need the power.
    There's your problem. Stoners are like brain damaged sloths on Prozac. Short of using them as garden gnomes - they have no real function.

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    Quote Originally Posted by daveza View Post
    So would it cost so much more for the air-con to be electrically powered as with the Yaris ?
    Yes, the option of hooking everything onto the auxiliary belt is much simpler and cheap. If they have to get an electric one there's design considerations that must be taken care of.
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    Super Grandmaster FiestaST's Avatar
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    Quote Originally Posted by Ockie View Post
    My car has a ECONOMY option for the aircon. Even with that on though you can still feel the loss of power. I guess it is just less.

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    I'm more interested in your "Sport" button. Any noticeable difference?

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    Quote Originally Posted by FiestaST View Post
    I'm more interested in your "Sport" button. Any noticeable difference?
    Actually that is not my car. Was a stock foto I got off the web. The south African bolt is set to sport mode as standard. The Indian one is set to city mode as standard lol. Mine has has a eco and city button as sport is the default mode. And yes....you can feel a big difference in between the eco and sport mode.
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    Quote Originally Posted by Spliffcat View Post
    Just turn off the aircon when you need the power.
    I always need power, I imagine it's really a Mustang.

    ( I have a very vivid imagination ).
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