FUEL SYSTEMS Mr. Lombardi, Selig, Moffre

 The purpose of the fuel system is to supply an exact amount of fuel for the engine to burn.  Without this essential system, a car wouldn’t be able to run. The Purpose of A Fuel System

 Fuel tank  Fuel line  Fuel filter  Fuel pump  Fuel injection system Air Cleaner

Fuel Tank  Usually two pieces of steel, welded together to form a container  Can also be made of plastic.  It will have a fuel pickup in the deepest part  Filler neck  Vent to allow air back in  Gauge  Fuel pump

Fuel Lines  A fuel line is a hose used to bring fuel from storage tank to the distribution center. (Carb/Injectors)  Commonly made of steel or high density plastic.

Fuel Filter  Screens out dirt and rust particles from the fuel, normally made into cartridges containing a filter paper.

Fuel Pump Fuel has to be pumped from the fuel tank to the engine under low pressure to the carburetor or high pressure to the fuel injection system.

Fuel Delivery  Carburetor  Fuel Injection

Carburetors  TWO JOBS  to mix the air and fuel  control the speed of the engine.

Fuel Injector squirts fine mist of fuel into the combustion chambers of the engine. A computer controls the system, monitoring necessary factors (load/RPM). Fuel Injection

Diesel Fuel Injection  Fuel injection “Timing” is critical

Fuels  Come from Refined Crude Oil  Organic Compounds  Gasoline  Diesel  Alt Fuels

Gasoline  Aliphatic hydrocarbon.  Hydrogen and Carbon arranged in chains

Octane  8 Carbons chained together  Adds length to Gas chain  Knock deterrent - resistance of the fuel to self- igniting

Diesel  Similar to Gasoline (Carbon chain)  Much longer (more energy)

Alt. Fuels  Ethanol  LP  CNG  Bio Diesel

Ethanol  High Octane  Clean burning  American-made  Renewable fuel  $$$$ Distill  Energy Neutral

Propane Injection System  Requires another complete fuel system  average loss of 5 to 10% in miles per gallon  104 octane rating  domestically produced fuel  70 % less hydrocarbons (smog)  50 % less carbon monoxide  20 % less NOx  % less CO2

CNG  Similar to LP  Refueling Station more $$$$  40 % cheaper than Gas

BioDeisel  Mixed with Petroleum Diesel Fuel  Long chain fatty acids derived from vegetable oils or animal fats  Made from agricultural co-products and byproducts  soybean oil  natural oils  Greases

The End