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Continuously Variable Transmission
Last Post 12 Mar 2012 03:47 PM by Niel. 3 Replies.
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xsubsail
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Posts:3

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15 Feb 2012 02:51 AM
    In a car with CVT would max acceleration occur at the peak horsepower RPM or peak torque RPM?
    Niel
    Basic Member
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    Posts:193

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    16 Feb 2012 01:54 PM
    Acceleration is a function of force. The higher the force the greater the acceleration.

    Torque is force x distance

    As a result maximum acceleration will occur at maximum torque.

    This is true for a conventional transmission or a CVT.

    Niel Leon
    engineering.com
    xsubsail
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    11 Mar 2012 12:06 PM
    Niel,
    I think you're wrong with your answer of

    "As a result maximum acceleration will occur at maximum torque."

    If that were true then why would drag cars run at extreme RPMs when their max torque is at 3 to 4 thousand RPM?

    http://www.vettenet.org/torquehp.html

    xsubsail
    Niel
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    Posts:193

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    12 Mar 2012 03:47 PM
    Xsubsail:

    Drag racers run at extreme RPM's because they only have a limited number of gears and properly designed engine may have it peak at 3-4K but does not have a big drop off in torque once the peak occurs.

    As noted on the site you referenced, it is better to have you peak torque at higher RPM then at lower RPM.

    Niel
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