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Engine Torque Formula:
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Engine torque is a measure of the rotational force produced by an engine. It represents the engine's ability to do work and is a crucial parameter in determining vehicle performance, acceleration, and towing capacity.
The calculator uses the engine torque formula:
Where:
Explanation: The constant 5252 comes from the definition of horsepower where 1 horsepower equals 550 foot-pounds per second, and the conversion between rotational speed and linear measurement.
Details: Understanding engine torque is essential for vehicle performance analysis, engine tuning, transmission design, and determining the suitability of an engine for specific applications like towing or racing.
Tips: Enter horsepower and RPM values. Both values must be positive numbers. The calculator will compute the corresponding engine torque in pound-feet (lb-ft).
Q1: Why is 5252 used in the torque formula?
A: 5252 is a mathematical constant derived from the relationship between horsepower, torque, and RPM. At 5252 RPM, horsepower and torque values are always equal.
Q2: What's the difference between horsepower and torque?
A: Torque is the rotational force, while horsepower is the rate at which work is done. Horsepower = (Torque × RPM) / 5252.
Q3: What are typical torque values for different engines?
A: Small car engines: 100-200 lb-ft, performance cars: 200-400 lb-ft, trucks and diesels: 400-1000+ lb-ft.
Q4: How does torque affect vehicle performance?
A: Higher torque provides better acceleration and towing capacity, especially at lower RPMs. It determines how quickly a vehicle can overcome resistance.
Q5: Can this formula be used for electric motors?
A: Yes, the same relationship applies to electric motors, though electric motors typically produce maximum torque at zero RPM.