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Published byMargery Montgomery Modified over 9 years ago
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Fuel Systems
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Purpose of the fuel system –Store fuel –Deliver fuel –Pump fuel –Filter fuel –Mix air and fuel –Meter air and fuel
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Fuel Systems Parts of the fuel system: –Tank cap –Tank –Lines –Filter –Pump –Carburetor
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Fuel Systems Types of fuel –Gasoline –Kerosene –Diesel –LP- Liquefied Petroleum-Propane –Natural Gas –Alcohol Gasoline –Hydrocarbon compounds –Hydrogen and carbon molecules C 8 H 15
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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
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Fuel Systems Volatility –The ease at which a liquid can vaporize Volatility changes –High volatility for cold temperature –Low volatility for hot temperatures
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Fuel Systems Combustion –The burning of air and fuel
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Fuel Systems Detonation –A second burning of the fuel after the spark occurs which causes the engine to knock
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Fuel Systems Preignition –Ignition of the air-fuel mix before the spark
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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
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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
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Fuel Systems Byproduct of combustion –O 2 oxygen –H 2 O water –CO 2 carbon dioxide –C 8 H 15 hydrocarbons –CO carbon monoxide –No x oxides of nitrogen
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Have a nice day!
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