Fuel Systems. Purpose of the fuel system Store fuel Deliver fuel Pump fuel Filter fuel Mix air and...
-
Upload
margery-montgomery -
Category
Documents
-
view
255 -
download
2
description
Transcript of Fuel Systems. Purpose of the fuel system Store fuel Deliver fuel Pump fuel Filter fuel Mix air and...
Fuel Systems
Fuel Systems
• Purpose of the fuel system– Store fuel– Deliver fuel– Pump fuel– Filter fuel– Mix air and fuel– Meter air and fuel
Fuel Systems
• Parts of the fuel system:– Tank cap– Tank– Lines– Filter– Pump– Carburetor
Fuel Systems• Types of fuel
– Gasoline – Kerosene– Diesel– LP- Liquefied Petroleum-Propane– Natural Gas– Alcohol
• Gasoline– Hydrocarbon compounds– Hydrogen and carbon molecules C8H15
Fuel Systems• Gasoline additives
– Anti-icing or Deicer– Metal deactivators and Rust inhibitors– Detergents– Ethanol 10% max.(grain)– Methonal 5% max.(wood)– MTBE (methyl tertiary butyl ether) 11% max.
• Reformulated or oxygenated gas
Fuel Systems• Volatility
– The ease at which a liquid can vaporize• Volatility changes
– High volatility for cold temperature– Low volatility for hot temperatures
Fuel Systems
Combustion – The burning of air and fuel
Fuel Systems• Detonation
– A second burning of the fuel after the spark occurs which causes the engine to knock
Fuel Systems• Preignition
– Ignition of the air-fuel mix before the spark
Fuel Systems• Knock, a noise caused by preignition or
detonation• Octane
– The ability of a fuel to resist knocking– Isooctane and heptane as base line– RON + MON / 2
Fuel Systems• Stoichiometric
– Chemically correct air fuel mixture
– 14.7 parts of air to 1 part of fuel
• Rich mixture – Air-fuel mix with more
fuel than required• Lean mixture
– Air-fuel mixture with less fuel than required
Fuel Systems
• Byproduct of combustion– O2 oxygen
– H2O water
– CO2 carbon dioxide
– C8H15 hydrocarbons– CO carbon monoxide– Nox oxides of nitrogen
Have a nice day!