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  2. Common ethanol fuel mixtures - Wikipedia

    en.wikipedia.org/wiki/Common_ethanol_fuel_mixtures

    Summary of the main ethanol blends used around the world in 2013. Several common ethanol fuel mixtures are in use around the world. The use of pure hydrous or anhydrous ethanol in internal combustion engines (ICEs) is only possible if the engines are designed or modified for that purpose, and used only in automobiles, light-duty trucks and motorcycles.

  3. Energy-efficient driving - Wikipedia

    en.wikipedia.org/wiki/Energy-efficient_driving

    Underinflated tires wear out faster and lose energy to rolling resistance because of tire deformation. The loss for a car is approximately 1.0 percent for every 2 psi (0.1 bar; 10 kPa) drop in pressure of all four tires. [7] Improper wheel alignment and high engine oil kinematic viscosity also reduce fuel efficiency.

  4. Low rolling resistance tire - Wikipedia

    en.wikipedia.org/wiki/Low_rolling_resistance_tire

    Low rolling resistance tires are designed to reduce the energy loss as a tire rolls, decreasing the required rolling effort — and in the case of automotive applications, improving vehicle fuel efficiency as approximately 5–15% of the fuel consumed by a typical gas car may be used to overcome rolling resistance.

  5. Rolling resistance - Wikipedia

    en.wikipedia.org/wiki/Rolling_resistance

    Typical BMX bicycle tires used for solar cars 0.0065 [30] EU passenger car tyre label fuel efficiency class A (upper limit) 0.0062 to 0.0150 [31] Car tire measurements 0.0100 to 0.0150 [32] Ordinary car tires on concrete 0.0385 to 0.0730 [33] Stage coach (19th century) on dirt road. Soft snow on road for worst case. 0.3000 [32] Ordinary car ...

  6. Tyre label - Wikipedia

    en.wikipedia.org/wiki/Tyre_label

    Rolling resistance is the main key factor in measuring the energy efficiency of a tyre and has direct influence on the fuel consumption of a vehicle. A set of tyres of the green class "A" compared to a "G" class can reduce fuel consumption by 9% [3] of a passenger car; even more for trucks.

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