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Como Calcular O Torque De Um Motor A Combustao

Combustion Motor Torque Formula:

\[ T = \frac{P \times 9550}{N} \]

kW
rpm

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1. What is Combustion Motor Torque?

Torque is a measure of the rotational force produced by a combustion engine. It represents the engine's ability to do work and is a crucial parameter in determining the pulling power and acceleration capabilities of a vehicle.

2. How Does the Calculator Work?

The calculator uses the torque formula:

\[ T = \frac{P \times 9550}{N} \]

Where:

Explanation: This formula calculates the torque output of a combustion engine based on its power output and rotational speed.

3. Importance of Torque Calculation

Details: Understanding engine torque is essential for vehicle design, performance evaluation, and proper gear ratio selection. Higher torque values generally indicate better acceleration and towing capacity.

4. Using the Calculator

Tips: Enter engine power in kilowatts (kW) and rotational speed in revolutions per minute (rpm). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: The constant 9550 comes from unit conversions: 1 kW = 1000 N·m/s, and we need to convert from seconds to minutes (60 seconds) and account for radians (2π).

Q2: What is a typical torque value for passenger cars?
A: Most passenger cars have torque values between 150-400 Nm, with diesel engines typically producing higher torque at lower RPMs than gasoline engines.

Q3: How does torque relate to horsepower?
A: Horsepower is calculated from torque and RPM: HP = (Torque × RPM) / 5252 (in imperial units). Torque represents force, while horsepower represents work done over time.

Q4: Why do diesel engines have higher torque?
A: Diesel engines typically have higher compression ratios and longer strokes, which create more leverage and thus higher torque output, especially at lower RPMs.

Q5: How does torque affect fuel efficiency?
A: Engines that produce more torque at lower RPMs generally offer better fuel efficiency because they don't need to work as hard to maintain speed or accelerate.

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