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Two common definitions used today are the imperial horsepower as in "hp" or "bhp" which is about 745.7 watts, and the metric horsepower as in "cv" or "PS" which is approximately 735.5 watts. The electric horsepower "hpE" is exactly 746 watts, while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year.
DKW RT 250 (1952–1953) motorcycle engine. A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder.This engine is often used for motorcycles, motor scooters, motorized bicycles, go-karts, all-terrain vehicles, radio-controlled vehicles, power tools and garden machinery (such as chainsaws, lawn mowers, cultivators, and string trimmers).
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.
For reference, about 10,000 100-watt lightbulbs or 5,000 computer systems would be needed to draw 1 MW. Also, 1 MW is approximately 1360 horsepower . Modern high-power diesel-electric locomotives typically have a peak power of 3–5 MW, while a typical modern nuclear power plant produces on the order of 500–2000 MW peak output.
The 2025 Chevrolet Corvette ZR1 has been revealed. Its LT7 twin-turbo V-8 makes 1,064 hp and 838 lb-ft. Top speed is at least 215 mph. It goes on sale next year.
2002 was the first season that allowed 990 cc 4-strokes to be raced alongside 500 cc 2-strokes.In a change from their V-4 YZR500, Yamaha designed the YZR-M1 (for "Mission One") with an inline-4 engine because it was the format considered to have the best mutual balance with the frame. [2]
[3] [4] Italian magazine Motociclismo claimed to have achieved 193.24 mph (310.99 km/h) testing the F4 R 312, more or less confirming the claimed speed and tying, if not exceeding, the 1999 Suzuki Hayabusa's tested speeds of 188–194 mph (303–312 km/h), [5] whereas Sport Rider were only able to achieve a 185.4 mph (298.4 km/h) top speed ...