1. What is an Aniline Point Calculator?

Definition: This calculator determines the aniline point of diesel fuel based on the diesel index and API gravity.

Purpose: It helps petroleum engineers and fuel quality analysts assess the aromatic content and ignition quality of diesel fuels.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( AP \) — Aniline Point (temperature in °F)
• \( DI \) — Diesel Index (measure of ignition quality)
• \( °API \) — API Gravity (measure of fuel density)

Explanation: The diesel index is multiplied by 100 and then divided by the API gravity to determine the aniline point temperature.

3. Importance of Aniline Point Calculation

Details: The aniline point indicates the aromatic content of diesel fuel - lower values indicate higher aromatic content, which affects combustion quality and engine performance.

4. Using the Calculator

Tips: Enter the diesel index (typically 30-80) and API gravity (typically 30-50 for diesel). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical aniline point for diesel fuel?
A: Most diesel fuels have an aniline point between 140-200°F, depending on composition.

Q2: How does aniline point relate to fuel quality?
A: Higher aniline points generally indicate better ignition quality and lower aromatic content.

Q3: What's the difference between diesel index and cetane number?
A: Both measure ignition quality, but diesel index is calculated from density and aniline point, while cetane number is measured in engine tests.

Q4: Why is API gravity important in this calculation?
A: API gravity reflects fuel density, which affects the relationship between diesel index and aniline point.

Q5: Can this calculator be used for other fuels?
A: This formula is specific to diesel fuels. Other fuels may require different calculation methods.