In the context of cars, broadly speaking, this means that a car with a lot of horsepower will have a higher top-speed than the same car with less horsepower. Average horsepower is probably closer to 8. Therefore the term "horsepower" may seem slightly misleading, but Watt did have his reasons for such a name. All Rights Reserved. When purchasing a new car, the crib sheet includes two output numbers with the engine: horsepower and torque. The original definition is based on the amount of coal you could get out of a mine. Does one horsepower equal one horse? I think horse has a lot of torque, but only 1 horsepower due to "rpm" Horsepower is basically how much work you can get done in a certain time period. Based on readings from a torque sensor developed by AVL Racing, the US Army Top Fuel dragster recorded a peak 11,051 horsepower during a recent test in California.. That surpasses even the most optimistic of estimates that the drag racing industry has tossed around for the past quarter century. Determining engine capacity is more precise than the worker example due to the dynamometer. So is torque a substitute measure for horsepower? Horsepower is a unit of power. Can it? As born2bwire said, 1 horsepower is the ability to raise 550 pounds of mass 1 foot in 1 second, so it is a set number, where as horses are more varied in their strength. at 1,200 rpm. Watt defined this amount as "the amount of work required from a horse to pull 150 pounds out of a hole that was 220 feet deep". In fact, the maximum output of a horse can be up to 15 horsepower, and the maximum output of a human is a bit more than a single horsepower. It really depends on the breed and health of the horse. 'horsepowers' as applied to motor vehicles originally was a tax thing. Using the engine mentioned above, 148.51 × 5,252 ÷ 1,200 = 649.978 ft.-lbs. Therefore the measurement of horsepower refers to what the sustained output of an engine is. Similarly, a car with a lot of torque will be able to accelerate faster than the same car with less torque, as its instantaneous output will be higher. of torque at 1,500 rpm, it would now have 185 hp. Suddenly his invention became much more tempting. If you live in the United States or Canada, those numbers will be listed with the units of SAE certified Horsepower (which is the same as horsepower, but certified by the SAE ) … All https://www.barchart.com/solutions/ is provided by Barchart Solutions. Torque is the measure in foot-pounds (ft.-lbs.) Use this formula to check average car horsepower. If you made some special pulleys/gears and you are not losing much power on friction, then 10hp motor will … We are all curious about the number of horses hiding in there. Although Watt may have "bent the truth" to make his engine more appealing, he was not lying. of torque. of the amount of work an engine can perform. To convert horsepower to torque, use this formula: torque = hp. Click on "Torque", enter the horsepower and rpm, click on "Calculate" and the answer is 336.13 foot pounds. = torque × engine rpm ÷ 5,252. We did a very simple and crude experiment in my high school science class years ago. The horsepower curve starts very low for typical gas engines (about 10% of its peak) and gradually increases the RPMs reach the peak speed and then a sudden "peak" of horsepower of 10 at the optimum RPM. Futures: at least 10 minute delayed. If that same engine is modified to maintain 650 ft.-lbs. Crossposted by. of torque at 1,200 rpm, that engine’s horsepower would be 650 × 1,200 ÷ 5,252 = 148.51 hp.
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