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A typical turbocharged V8 diesel engine might have an engine power of 250 kW (340 hp) and a mass of 380 kg (840 lb), [1] giving it a power-to-weight ratio of 0.65 kW/kg (0.40 hp/lb). Examples of high power-to-weight ratios can often be found in turbines.
The cars in GT3 are designed to have a weight between 1200 kg and 1300 kg (2645 lbs and 2866 lbs) with horsepower between 500 hp and 600 hp. All cars have a very similar power to weight ratio but achieved either by high power and high weight such as the Mercedes-Benz SLS AMG [ 2 ] or low power and low weight such as the Porsche 911 GT3 . [ 3 ]
Tax or fiscal horsepower is a non-linear rating of a motor vehicle for tax purposes. [19] Tax horsepower ratings were originally more or less directly related to the size of the engine; but as of 2000, many countries changed over to systems based on CO 2 emissions, so are not directly comparable to older ratings.
Engine power is the power that an engine can put out. It can be expressed in power units, most commonly kilowatt, pferdestärke (metric horsepower), or horsepower.In terms of internal combustion engines, the engine power usually describes the rated power, which is a power output that the engine can maintain over a long period of time according to a certain testing method, for example ISO 1585.
1.1 kW (1.5 hp; 1.5 PS) First production car [57] Peugeot Type 15: 1897 6 kW (8 hp; 8 PS) Peugeot's first in-house engine [58] Daimler Phoenix 1899 17 kW (23 hp; 23 PS) First four-cylinder road car [59] Mercedes 35 HP: 1901 26 kW (35 hp; 35 PS) Originally designed as a race car, developed for road use [60] Mercedes Simplex: 1902
Sprint cars have very high power-to-weight ratios, with weights of approximately 1,400 pounds (640 kg) (including the driver) [2] and power outputs of over 900 horsepower (670 kW), [3] which give them a power-to-weight ratio besting that of contemporary F1 cars. [4]
The thrust-to-weight ratio is usually calculated from initial gross weight at sea level on earth [6] and is sometimes called thrust-to-Earth-weight ratio. [7] The thrust-to-Earth-weight ratio of a rocket or rocket-propelled vehicle is an indicator of its acceleration expressed in multiples of earth's gravitational acceleration, g 0. [5]
Fastest road car over the 1/4 mile: 9.9 seconds @ 143 mph (230 km/h) Due to its kerb weight of 980 kg (2,161 lb), [7] the power-to-weight ratio for the GTR720 is 745 bhp (755 PS; 556 kW) per tonne, which is a better ratio than the Bugatti Veyron, Enzo Ferrari, Ascari A10, Koenigsegg CCX or CCGT, but less than the Koenigsegg CCXR or the Caparo T1.