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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.
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 company's Lexus ES 330 and Camry SE V6 (3.3 L V6) were previously rated at 225 hp (168 kW) but the ES 330 dropped to 218 hp (163 kW) while the Camry declined to 210 hp (160 kW). The first engine certified under the new program was the 7.0 L LS7 used in the 2006 Chevrolet Corvette Z06. Certified power rose slightly from 500 to 505 hp (373 to ...
In 1986 Ticino switched to a system based on a calculation including engine size and weight. [24] The tax horsepower system remained in effect for seven cantons long into the 21st century; however, as of 2022, although quite likely earlier, Geneva was the only canton to still base road tax purely on tax horsepower. [25]
The first IHC "Highwheeler" truck had a very simple air-cooled horizontally opposed two-cylinder engine with a 5-inch (130 mm) stroke and a 5-inch (130 mm) bore, and produced around 18–20 hp (13–15 kW). Displacement was 196 cubic inches (3.2 L). [2] In 1915 a new L-head water-cooled 201 cubic inches (3.3 L) inline-four engine appeared. [3]
tech: approximate range of power output of 'supercars' (300 to 1000 hp) 4.5 × 10 5 W tech: approximate maximum power output of a large 18-wheeler truck engine (600 hp) 10 6: mega-(MW) 1.3 × 10 6 W tech: power output of P-51 Mustang fighter aircraft 1.9 × 10 6 W astro: power per square meter potentially received by Earth at the peak of the ...
To calculate the actual efficiency of an engine requires the energy density of the fuel being used. Different fuels have different energy densities defined by the fuel's heating value. The lower heating value (LHV) is used for internal-combustion-engine-efficiency calculations because the heat at temperatures below 150 °C (300 °F) cannot be ...
735 kW (986 hp; 1,000 PS) Plug-in hybrid: Up to 2000 units per year planned. [43] [44] Denza Z9/Z9 GT BEV 2024 710 kW (952 hp; 965 PS) Electric: LaFerrari: 2013 708 kW (949 hp; 963 PS) Hybrid electric: 710+ units produced. [45] Koenigsegg Agera: 2010 706 kW (947 hp; 960 PS) Internal combustion: 7 units produced McLaren P1: 2013 674 kW (903 hp ...