Quote:
Originally Posted by Inge_F
N/A engines often have longer stroke vs bore to produce enough torque.
Since they are not TC they work with less pressure in the comb. chamber and
then again less force are put to the piston. And as we all know, force x arm=torque. Greater stroke also means greater arm made by the crankshaft.
TC-engines then have no problems producing high enough cyl. mean pressure/force to develop high torques, and do not have to compensate with longer stroke.
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For a given displacement, a longer stroke does not mean more torque. While it is true that a longer arm means more torque for a given force, this is offset by a smaller piston area on which the cylinder pressure is applied therefore yielding less force.