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Difference between revisions of "Horsepower"
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→SAE-certified horsepower
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==== SAE-certified horsepower ==== | ==== SAE-certified horsepower ==== | ||
In | In 2005, the [[Society of Automotive Engineers]] introduced a new test procedure ([http://www.sae.org/certifiedpower J2723]) for engine horsepower and [[torque]]. The procedure eliminates some of the areas of flexibility in power measurement, and requires an independent observer present when engines are measured. The test is voluntary, but engines completing it can be advertised as "SAE-certified". | ||
Many manufacturers began switching to the new rating immediately, often with surprising results. The rated output of [[Cadillac]]'s [[supercharged|supercharger]] [[GM Premium V engine#Supercharged|Northstar]] V8 jumped from 440 hp (328 kW) to 469 hp (350 kW) under the new tests, while the rating for [[Toyota Motor Corporation|Toyota]]'s [[Toyota Camry|Camry]] 3.0 L ''[[Toyota MZ engine#1MZ-FE|1MZ-FE]]'' V6 fell from 210 hp (157 kW) to 190 hp (142 kW). The first engine certified under the new program was the 7.0 L [[GM LS engine#LS7|LS7]] used in the 2006 [[Chevrolet Corvette]] Z06. Certified power rose slightly from 500 hp (373 kW) to 505 hp (377 kW). | Many manufacturers began switching to the new rating immediately, often with surprising results. The rated output of [[Cadillac]]'s [[supercharged|supercharger]] [[GM Premium V engine#Supercharged|Northstar]] V8 jumped from 440 hp (328 kW) to 469 hp (350 kW) under the new tests, while the rating for [[Toyota Motor Corporation|Toyota]]'s [[Toyota Camry|Camry]] 3.0 L ''[[Toyota MZ engine#1MZ-FE|1MZ-FE]]'' V6 fell from 210 hp (157 kW) to 190 hp (142 kW). The first engine certified under the new program was the 7.0 L [[GM LS engine#LS7|LS7]] used in the 2006 [[Chevrolet Corvette]] Z06. Certified power rose slightly from 500 hp (373 kW) to 505 hp (377 kW). | ||