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The World Motorcycle Test Cycle (WMTC) is a system of driving cycles used to measure fuel consumption and emissions in motorcycles. The methods are stipulated as part of the Global Technical Regulation established under the United Nations ’ World Forum for Harmonisation of Vehicle Regulations , also known as WP.29.
Fuel cell type Dry weight Power-to-weight ratio Example use Redflow Power+BOS ZB600 10kWh ZBB [86] 900 kg 5.6 W/kg (9.3 W/kg peak) Rural Grid support Ceramic Fuel Cells BlueGen MG 2.0 CHP SOFC [87] 200 kg 10 W/kg 15 W/kg CHP: MTU Friedrichshafen 240 kW MCFC HotModule 2006 20,000 kg 12 W/kg Smart Fuel Cell Jenny 600S 25 W DMFC [88] 1.7 kg 14.7 W/kg
The efficiency often reported for a particular engine, however, is not its maximum efficiency but a fuel economy cycle statistical average. For example, the cycle average value of BSFC for a gasoline engine is 322 g/(kW⋅h), translating to an efficiency of 25% (1/(322 × 0.0122225) = 0.2540).
A consumption map or efficiency map [1] is a chart that displays the brake-specific fuel consumption of an internal combustion engine at a given rotational speed and mean effective pressure, in grams per kilowatt-hour (g/kWh). The map contains each possible condition combining rotational speed and mean effective pressure.
For example, motorcycle racing engines can use compression ratios as high as 14.7:1, and it is common to find motorcycles with compression ratios above 12.0:1 designed for 95 or higher octane fuel. Ethanol and methanol can take significantly higher compression ratios than gasoline.
According to White, technologies fuel efficiency has been improved in the area of high technology diesel engines, blended vehicles, rechargeable electric vehicles, plug-in hybrid electric vehicles ...
Energy efficiency is expressed in terms of fuel economy: [2] distance per vehicle per unit fuel volume; e.g., km/L or miles per gallon (US or imperial). distance per vehicle per unit fuel mass; e.g., km/kg. [11] distance per vehicle per unit energy; e.g., miles per gallon equivalent (mpg-e).
Fuel consumption is a more accurate measure of a vehicle's performance because it is a linear relationship while fuel economy leads to distortions in efficiency improvements. [2] Weight-specific efficiency (efficiency per unit weight) may be stated for freight , and passenger-specific efficiency (vehicle efficiency per passenger) for passenger ...