Search results
Results from the WOW.Com Content Network
Diesel–electric transmission is used on railways by diesel–electric locomotives and diesel–electric multiple units, as electric motors are able to supply full torque from 0 RPM. Diesel–electric systems are also used in marine transport, including submarines, and on some other land vehicles.
Thus, the diesel truck is using 3.37 times the amount of energy that the electric truck is using. Therefore, the only variables that are stopping commercial use of electric trucks are original vehicle cost and driving range, owing to the high battery pack cost and low specific energy. [27]
The rating of a brushless motor is the ratio of the motor's unloaded rotational speed (measured in RPM) to the peak (not RMS) voltage on the wires connected to the coils (the back EMF). For example, an unloaded motor of K v {\displaystyle K_{\text{v}}} = 5,700 rpm/V supplied with 11.1 V will run at a nominal speed of 63,270 rpm (= 5,700 rpm/V ...
A driving cycle is a series of data points representing the speed of a vehicle versus time. Driving cycles are produced by different countries and organizations to assess the performance of vehicles in various ways, for example, fuel consumption, electric vehicle autonomy and polluting emissions. [1] [2] [3]
This is around 1 ⁄ 5 (20%) of what is needed to power a standard upright bicycle without aerodynamic cladding at same speed, and 1 ⁄ 50 (2%) of that which is consumed by an average fossil fuel or electric car (the velomobile efficiency corresponds to 4700 miles per US gallon, 2000 km/L, or 0.05 L/100 km). [22]
Electric motors can deliver their maximum torque over a wide RPM range. This means that the performance of a vehicle with a 100 kW electric motor exceeds that of a vehicle with a 100 kW internal combustion engine, which can only deliver its maximum torque within a limited range of engine speed.
Image of a nose mounted traction motor on an R46 New York City Subway car. The motor can be clearly seen behind the axle with the gear box with the writing on it in the center. Another nose mounted traction motor on a wrecked R38 Subway car. Coney Island Truck Repair shop; many pictures regarding traction motors; Detached truck with Traction ...
Under Motor Vehicle Safety Regulations, a low-speed vehicle is defined as a vehicle, other than an all-terrain vehicle, a truck or a vehicle imported temporarily for special purposes, that is powered by an electric motor, produces no emissions, is designed to travel on 4 wheels and has an attainable speed in 1.6 km of more than 32 km/h (20 mph) but not more than 40 km/h (25 mph) on a paved ...