Lecture 25_outlinepdf.ppt

Automobiles and Natural Resources Objectives How automobiles pollute? Gas types Variety of automobiles available Emission Reducing Equipment ?Green Driving? before you start, starting, driving How do automobiles pollute? Emissions of a car engine are: Nitrogen ____(N2) - Air is 78% N2 Carbon dioxide (CO2) product of ________ carbon in the fuel _____with O2 Water vapor (H2O) ? product of_________ hydrogen in the fuel bonds with the oxygen in the air. Because the combustion process is never perfect ____________ emissions are also produced in engines The good news Measures to Promote Fuel Effienciency Gas Types Variety of automobiles available Gasoline Hybrid Electric Solar LEED certified vehicles (http://www.greenercars.org/news.htm) Hybrid Electric Vehicle ~________ total driving range 40-mile all-electric range ______ fuel consumption ______tailpipe emissions Electric Vehicle (EV) Gov. Granholm said that ?the _________ rty is over? and her state's future is battery-powered Available as ___________________ (NEVs) and as scooters and bicycles. Hydrogen Fuel Cell Vehicle http://videos.howstuffworks.com/discovery/32239-future-car-hydrogen-cars-video.htm Combines 2H2 + O2 ? 2H2O + _____________ Questions about where to sustainably get the H2? ____________________ are the simplest source Solar Vehicles What technology do they use? Emission Reducing Equipment ___________ converters. eliminate more than _____ of carbon monoxide, ____ and nitrogen oxides ______________ . saves fuel at highway speeds Emission Reducing Equipment Fuel__________ . efficiently regulate fuel to the engine __________ transmissions. Additional gear (5th in manual and 4th in automatic) decrease the number of engine ______________speeds saves_____ less wear and tear Less______ Emission Reducing Equipment _____ tires less rolling________ smoother rides Less distortion More grip ________ gas mileage ?Green Driving?: Before you start Plan and ____________ your trips. Avoid__________ Less idling, fewer________ Also: share, carpool and __________________ Keep your car Not tuned = more___________ Well tuned= improves ______________ Do not overfill your gas tank Spilled and ?top off? contributes _____________ - air pollution ?Green Driving?: Before you start 4. Tires Reduces Conserves 5. Repair _____________leaks CFCs 6. Engine __________in cold climates ______ and the catalytic converter achieve maximum________ ?Green Driving?: Starting Don?t pump the_________, if your car has fuel injection. - should ______________even in cold weather _____ Subaru Justy was the last car sold in the United States to have a ________ (fuel to engine). NOW:_____________. ?Green Driving?: Starting 2. Don?t warm up by_______ excess emissions may damage the_______________. ?Green Driving?: Driving Accelerate____; avoid ?pedal to the metal.? engine wastes _______ unburned gas escapes from the exhaust pipe Avoid excess > _______uses more fuel than re-starting engine Obey increases gasoline consumption may increase exhaust emissions ?Green Driving?: Driving Maintain a ____________ speed. Using ______________on the highway is good except in ________(pedal activity) 5. Remove excess engine ____________and consume more fuel EPA Green Car Guide http://www.epa.gov/greenvehicles/Index.do;jsessionid=e4a8f8e7daf210fc879a7cd2f4745eb59ee560555543d47b543427799818d074.e34MbhqOa3uSby0Lch4NbN4Tc3uNe6fznA5Pp7ftolbGmkTy Check out the vehicle you drive most often!