Engine Torque From Wheel Calculator

Engine Torque Formula:

\[ \text{Engine Torque} = \frac{\text{Wheel Torque}}{\text{Gear Ratio}} \]

Engine Torque:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Engine Torque Calculation?

Engine torque calculation determines the rotational force produced by an engine based on wheel torque and gear ratio. This helps in understanding engine performance and power transmission efficiency in automotive systems.

2. How Does the Calculator Work?

The calculator uses the engine torque formula:

\[ \text{Engine Torque} = \frac{\text{Wheel Torque}}{\text{Gear Ratio}} \]

Where:

Wheel Torque — Rotational force at the wheels (Nm)
Gear Ratio — Ratio between engine speed and wheel speed (dimensionless)

Explanation: The formula calculates the engine's torque output by accounting for the mechanical advantage provided by the gear system.

3. Importance of Engine Torque Calculation

Details: Accurate engine torque calculation is essential for vehicle performance analysis, transmission design, and optimizing fuel efficiency in automotive engineering.

4. Using the Calculator

Tips: Enter wheel torque in Newton-meters (Nm) and gear ratio as a dimensionless value. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between engine torque and wheel torque?
A: Wheel torque is engine torque multiplied by gear ratio. This calculator reverses that relationship to find engine torque from wheel torque.

Q2: Why is gear ratio important in torque calculation?
A: Gear ratio determines how much the engine's torque is multiplied or reduced before reaching the wheels, affecting vehicle acceleration and towing capacity.

Q3: What are typical gear ratio values?
A: Gear ratios vary by vehicle and transmission type, typically ranging from 2:1 to 5:1 for final drive ratios in passenger vehicles.

Q4: Can this calculator be used for different transmission types?
A: Yes, the formula applies to manual, automatic, and continuously variable transmissions, though the gear ratio value may represent an effective ratio.

Q5: How accurate is this calculation for real-world applications?
A: While the formula provides a theoretical calculation, real-world factors like transmission efficiency, tire slip, and drivetrain losses should be considered for precise applications.