Unit 3: Energy Conservation - Transport

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  • Transport Energy Conservation
    • Bulk Transport
      • Smaller numbers of larger vehicles
    • Type of Transport
      • Slower transport more energy efficient e.g. rain wagon, canal barge
    • Vehicle Design
      • Air resistance - smoother the cars passage through air, less energy lost as friction
      • Regenerative braking - hybrid cars slowed down with generator, creating electricity
        • Useful for urban stop-start driving
      • Vehicle weight - lighter = less energy needed to move it
        • Plastics instead of metal
        • High strength steel so use of thinner lighter sheets
        • Aluminium engine blocks
        • Careful wiring - shorter and lighter cables
      • Wheel design - solid tyres produce less friction but more bumpy
      • Fuel combustion efficiency - engines don't burn all their fuel
        • More valves per cylinder - efficient waste gas removal
        • Thermostatically operated fan to maintain optimum engine temperature
        • Ignition control - accurate ignition spark timining
    • Mode of Vehicle Use
      • Traffic management to reduce congestion - allows cars to drive at optimum speed

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