Compressed Air Regenerative Braking (CARB) Purple Team B Catherine KovealIan Collier Jason MartinezJeremy Scholz Tim Suen.

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Presentation transcript:

Compressed Air Regenerative Braking (CARB) Purple Team B Catherine KovealIan Collier Jason MartinezJeremy Scholz Tim Suen

Establish Need 7,600,000 trucks & SUVs produced in 2003* Average 22 mpg for car vs mpg light truck (2002) Rise is gas prices: $1.50/gal in Oct vs. $1.90/gal in Oct. 2004** No push to raise gas mileage for large vehicles *Ward’s Automotive Yearbook 2004 pg 232 **Energy Information Administration – US Dept. of Energy

CARB System Overview Compressed air stores energy generated in braking Energy used to assist vehicle acceleration $2500 retrofit system $ compressor $1000 air tank, hardware $etc install 10 LITER, 3000 PSI PRESSURE VESSEL ROTARY PISTON AIR PUMP PUMP DRIVE MECHANISM DRIVE SHAFT REAR AXLE

Estimated Gains using CARB 277kJ dissipated during braking from 35mph* Estimate 80% efficiency of energy recovery After 130 stops, using CARB, you save one gallon of gas Stop & go driving accounts for 17% of gas used** *Estimate for 2 ton car traveling at 35 mph **US Dept. of Energy, Spring 2002

Air Braking Demo Air Pump Inertial Mass Pressure Vessel Bearings

Target Market On average light truck owners spend $1200/yr on gasoline Per vehicle savings of $ per year Potential savings of 7.5 billion gallons/yr gas Ford F150Ford ExplorerFord Crown Victoria MPG (city) 18 Annual Fuel $1285 MPG (city) 15 Annual Fuel $1588 MPG (city) 16* Annual Fuel $1588 *

Target vehicle comparison

Ford F-350 Tonka 8,000-lb. to 11,000-lb. GVW vehicles 32 mph to stop allows acceleration back to 25 mph ~ 80% efficiency System weighs 450 lb. and adds $2000 to the vehicle

Drive Cycles by City New York Driving Las Angeles Driving