A SURVEY OF PROPULSION SYSTEMS FOR LOW-EMISSION URBAN VEHICLES

THE REPORT IS AN OVERVIEW OF LOW-AND NEGLIGIBLE-EMISSION URBAN VEHICLES TECHNOLOGY. A COMPREHENSIVE INVENTORY OF EXISTING AND EXPERIMENTAL DESIGN ALTERNATIVES IS EXAMINED BOTH FOR FEASIBILITY OF APPLICATION AND FOR RELATIVE EMISSION LEVELS. PARTICULAR EMPHASIS IS PLACED ON STATE OF DEVELOPMENT, COST, SUPPLY REQUIREMENTS, SAFETY CONSIDERATIONS, AND INTEGRATION WITH OVERALL SYSTEM CHARACTERISTICS. FIVE SYSTEM ALTERNATIVES ARE IDENTIFIED, ANALYZED, AND EVALUATED: MECHANICAL DRIVES, ALL ELECTRIC DRIVES, ELECTRIC DRIVES WITH FLYWHEEL ENERGY STORAGE, SERIES HYBRID DRIVES, AND PARALLEL HYBRID DRIVES. WITHIN EACH SYSTEM THE STUDY EXPLORES THE FOLLOWING SIX ASPECTS OF COMPONENT TECHNOLOGY: (1) FUELS; (2) HEAT ENGINES; (3) ELECTRIC POWER SOURCES; (4) ENERGY STORAGE; (5) ELECTRIC POWER CONVERTERS; AND (6) TRANSMISSIONS. THE REPORT ALSO CONSIDERS EXTERNAL OR ANCILLARY EFFECTS ON EMISSIONS CAUSED BY THE DYNAMIC VEHICLE. AN ANALYTICAL MODEL WAS CONSTRUCTED AND UTILIZED TO STUDY FORCES ACTING ON THE VEHICLE, POWER REQUIRED AT THE WHEELS, AND REGENERATIVE BRAKING. A PARAMETRIC STUDY EVALUATED THE EFFECT ON VEHICLE PERFORMANCE AND EMISSION CONTROL OF CYCLE CRUISE SPEED, AVERAGE ACCELERATION, STOPS PER MILE, TIME PER STOP, GRADIENTS, REGENERATIVE BRAKING, VEHICLE WEIGHT, AND NUMBER OF PASSENGERS. /UMTA/

• Supplemental Notes:
  • PROJ NO TRD-52
• Corporate Authors:

  MITRE Corporation

  Bedford, MA  United States 
• Publication Date: 1970-9

Subject/Index Terms

• TRT Terms: Electric batteries; Engines; Exhaust gases; Flywheels; Innovation; Motor vehicles; Motors; Power; Propulsion; Urban transportation; Vehicle power plants; Vehicles
• Uncontrolled Terms: Hybrids; Propulsion systems
• Old TRIS Terms: Future concepts; Urbanized vehicles
• Subject Areas: Energy; Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00223939
• Record Type: Publication
• Source Agency: Urban Mass Transportation Administration
• Files: TRIS, USDOT
• Created Date: Oct 23 1972 12:00AM