1. What is BHP Per Tonne?

BHP (Brake Horsepower) per tonne is a measure of power-to-weight ratio, indicating how much power is available for each tonne of weight. It's commonly used in automotive and gas industry applications to evaluate performance.

2. How Does the Calculator Work?

The calculator uses the BHP per tonne formula:

Where:

• \( \text{BHP} \) — Brake horsepower (bhp)
• \( \text{Weight} \) — Weight in kilograms (kg)

Explanation: The formula converts weight from kilograms to tonnes (by dividing by 1000) and then divides the power by this value to get power per tonne.

3. Importance of BHP Per Tonne Calculation

Details: Power-to-weight ratio is crucial for understanding vehicle or equipment performance, especially in gas applications where efficiency and power delivery are important factors.

4. Using the Calculator

Tips: Enter BHP in brake horsepower (bhp) and weight in kilograms (kg). All values must be valid (greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: What is a good BHP per tonne value?
A: Values vary by application, but generally higher numbers indicate better performance. For passenger cars, 100-150 bhp/tonne is common, while performance cars may exceed 200 bhp/tonne.

Q2: How does this differ from kW per tonne?
A: The concept is the same but uses different power units. 1 bhp ≈ 0.7457 kW, so you can convert between them if needed.

Q3: Why is this important for gas applications?
A: In gas systems, power-to-weight ratio helps evaluate the efficiency and performance of compressors, turbines, and other equipment relative to their size.

Q4: Should I use metric or imperial units?
A: This calculator uses metric units (kg for weight). If you have weight in pounds, convert to kg first (1 lb ≈ 0.4536 kg).

Q5: Can this be used for electric motors?
A: Yes, the concept applies to any power source, though you might need to convert between power units if using different measurements.