Definition

1. Noun:
   • A heavy mineral oil used as fuel in diesel engines. It is a specific type of fuel derived from petroleum, characterized by its ignition through compression rather than a spark.

Usage

• Noun: Used as a non-count noun to refer to the fuel itself. It is typically used in contexts related to vehicles, machinery, transportation, and energy.
  • The truck runs on diesel fuel.
  • The price of diesel fuel has increased this month.

Examples

• Noun:
  • Most large ships and locomotives are powered by diesel fuel.
  • We need to fill the tank with diesel fuel before the long journey.
  • The generator requires a steady supply of diesel fuel to operate.

Advanced Usage

• "Diesel fuel injection": Refers to the system that delivers fuel into the cylinders of a diesel engine.
  • Modern diesel engines use high-pressure diesel fuel injection for better efficiency.
• "Ultra-low sulfur diesel fuel": A specific, cleaner-burning type of diesel fuel with reduced sulfur content.
  • New regulations mandate the use of ultra-low sulfur diesel fuel to reduce emissions.

Variants and Related Words

• Diesel (noun): A common short form for "diesel fuel" or "diesel engine."
  • Is this car a diesel?
• Diesel oil (noun): Another term for diesel fuel.
• Petrodiesel (noun): Diesel fuel derived from petroleum, to distinguish it from biodiesel.

Synonyms

• Diesel oil: A direct synonym.
• Fuel oil: A broader term that can include diesel fuel, especially for heating.

Related Phrases

• Diesel engine (noun phrase): The type of internal combustion engine that uses diesel fuel.
  • The reliability of a diesel engine is well-known.
• Diesel particulate filter (noun phrase): An emissions control device for diesel engines.
  • The diesel particulate filter needs periodic cleaning.

Noun

1. a heavy mineral oil used as fuel in diesel engines