Recent content by techniker

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    Automotive Why does automatic emergency braking not work in all speeds?

    A camera? Yes you are right, I just realized this. Why would they use a camera? I will look into whether other makers use radars.
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    Automotive Why does automatic emergency braking not work in all speeds?

    Do you have to link with an existing car?
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    Automotive Why does automatic emergency braking not work in all speeds?

    Since acc works at very high speeds, and can detect cars far enough for it to slow down and keep the distance you chose, and not just barely avoid the car in front, then it must have a high detection range. AEB detection range is up to 200 meters...
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    Automotive Why does automatic emergency braking not work in all speeds?

    Yes sorry I didn't reply. For ACC, I don't know about actual systems automakers use, but I got a theoretical value: The 77-GHz Autocruise radar system made by TRW has a forward-looking range of up to 492 feet (150 meters)
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    Automotive Why does automatic emergency braking not work in all speeds?

    Does not acc let you select a certain distance between you and a potential, not yet existing, car, and then whenever your car detects another car at that distance away, it will slow down. I don't know. Check the video at 1:17
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    Automotive Why does automatic emergency braking not work in all speeds?

    If adaptive cruise control works at very high speeds, why can't automatic emergency braking do it? Don't they use the same sensor/radar?
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    Automotive Why does automatic emergency braking not work in all speeds?

    The thread is wrong. It is not adaptive cruise. It is automatic emergency braking. Watch the video at 1:18.
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    Automotive Why does automatic emergency braking not work in all speeds?

    Yes, 50 mph. I have to find the source where I got the info from, and till then please forget about my question. Thanks
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    Automotive Why does automatic emergency braking not work in all speeds?

    Adaptive/active/radar cruise control (Update: It is not adaptive cruise control. It is automatic emergency braking) works only at or below 50 miles (per hour) in some high end cars like range rover, and even below that in other cars. Does anyone know why? Thanks a lot
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    In batteries, does stored energy vary with battery voltage?

    60 volt tools are more expensive than 20 volt tools. However, when adding the price of batteries and the revenue of the additional runtime of 60 volt tools (assuming 1380 watts because that is the average wattage of their corded saws [1200-1560 watts] ), the less expensive option becomes the 60...
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    In batteries, does stored energy vary with battery voltage?

    OK, this answers my question, thanks. Thanks a lot for the valuable info. This also saved me from a lot of reading.
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    In batteries, does stored energy vary with battery voltage?

    Yes you are right. I did not know a single tool can have multiple voltages. OK, thanks a lot for the info. This saved me a lot of of reading.
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    In batteries, does stored energy vary with battery voltage?

    Hi For a 1200 watt tool, there are 20, 40 and 60 volt batteries, and in the case of a 2 amp hour (7200 Coulomb) battery, using energy = charge x voltage gives different values of stored energy for each of the three batteries, which are 144000, 288000 and 432000 Joules. Is this correct? Thanks
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