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Most of my answer will be closely related to this answer: BSFC (Brake Specific Fuel Consumption) - How is this a beneficial measurement? Q1. The force in each stroke is directly related to the torque. There is less force in each stroke as the torque is decreasing. Power will increase with RPM to a certain point as power is a function of force over time. ...


Torque is a rotational force. It is a measurement of how hard it is applying force that causes the crankshaft to rotate. Torque is not a very good unit of measurement for an engine because it does not take into consideration how fast the output shaft rotates. For example, given an engine with 100 lb-ft. of torque, if you put that output through a 10:1 ...


60 seconds. RPM stands for Revolutions Per Minute. if you have one RPM then it takes 60 seconds to do a complete revolution. Now there are ways to convert from RPM (Revolutions Per Minute) to seconds per revolution or other such measurements as mentioned in other answers however they do not answer the actual question asked of how fast one RPM is.


This is a math-only question, and no one has explained the formulas. Also I like the idea of this simple question having multiple answers so... RPM is Revolutions Per Minute, but we want a time in seconds. When you hear that word "per" it means division. So, what we have is 4000 revolutions / 1 minute (where / is the division symbol). This easily ...


Divide the measured RPM by 60 gives the number of revolutions per second. For an engine at idle that would be about 12 revs per second. At a 7500 rpm redline it is 116 revolutions per second. Combustion engineering is done in degrees of crankshaft rotation and milliseconds.


In a car rpm are very often shown. From experience you might know that for a normal car it varies between 1000 and 3000 rpm for normal use cases. 3000 rpm = 50 rotations per second = 1 rotation per 0.02 seconds.

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