Re: High or Low Torque..???

Posted by MarkB_MI on January 28, 2011 at 18:03:50 from (32.178.195.206):

In Reply to: High or Low Torque..??? posted by BushogPapa on January 28, 2011 at 08:08:16:

Horsepower equals torque times rpm. Let's you have two engines, each of which produce the same rated horsepower, but one produces that horsepower at 2000 rpm and the other at 4000 rpm. The slower engine must necessarily be producing twice as much torque to produce the same horsepower. So, in this context, the slower engine is the "high torque" engine. Both engines will do exactly the same amount of work, but the slower engine produces much more torque.

The real question is "why does anyone care?" In practice, "high torque" really means the engine has a relatively flat torque curve. And that flat curve gives it "lugging" ability: It doesn't need to downshift as often as the faster engine.

Replies:

• Re: High or Low Torque..??? BushogPapa 15:16:34 01/29/11 (2)
  • Re: High or Low Torque..??? MarkB_MI 05:11:18 01/30/11 (1)
    • Re: High or Low Torque..??? BushogPapa 19:12:14 01/31/11 (0)

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