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James Watt the famous inventor who first invented the steam engine and lent his name to the term watt in electrical energy, had, in his time, no standard measurement of power energy to work his calculations from. The horse was the predominant method of mobile power, so Watt worked out the maximum capability of a horse, in that, working for one minute, a horse could lift a given weight, a number of feet in that minute, he called this "one horsepower" Because he was working with small pit ponies, he increased his answer by 50 percent, thinking that a large horse would be stronger, and came up with the amount of 33000 ft pounds per minute. Ie, a large horse can lift a weight of 33000 pounds to a height of 1 ft in one minute, or lift a weight of 33 pounds 1000 ft in a minute, or any other combination. Think of the horse using a block and tackle. His calculations stand to this day, imagine the fantastic weight a 2000 horsepower truck engine could lift in one minute today!!
Another Answer
Outside the United States, they don't! In Europe, for example, the power of an automobile engine is expressed in kilowatts.
The horsepower and the watt are simply two ways of expressing exactly the same quantity: power. They can be used interchangeably. Technically, there's nothing wrong with expressing the power of a lamp, a kettle, or a heater in horsepower -if you wished!
What else can I help you with?
Which Honda motor can you get the most horsepower out of?
The Honda K-series engines, particularly the K20 and K24 variants, are known for their high horsepower potential. With the right modifications, such as a turbocharger or performance tuning, these engines can easily exceed 300 horsepower. Additionally, the Honda J-series V6 engines also offer significant power potential, especially in models like the J35, which can be tuned to deliver impressive performance. Overall, the K-series is often favored for high horsepower builds in the Honda community.
Is it true that power is the rate at which work is done and is generally measured in horsepower?
Yes, power is the rate at which work is done. It is generally measured in watts in the International System of Units (SI) but can also be measured in horsepower. Horsepower is a unit of power that is often used in the context of engines and machines.
What horsepower is a Lamborghini?
Lamborghini models typically feature powerful engines that produce significant horsepower, often ranging from around 500 to over 800 horsepower, depending on the specific model. For example, the Lamborghini Huracán produces about 610 to 630 horsepower, while the Aventador can produce up to 730 horsepower or more in its higher-performance variants. These high horsepower ratings contribute to Lamborghini's reputation for exceptional speed and performance in the supercar market.
What is the difference between engine and NAUTICAL engine?
MARINE engines are designed to fit into boats and ships for propulsion units. They often drive a crank shaft, or in the case of turbine are connected to a reduction gear, which is coupled to the propeller shaft. Marine engines (piston) are often mounted vertically rather than horizontal to save space. Marine turbines are often smaller for the same horsepower output, and operate at higher speeds than power plant turbines to produce that horsepower.
How many horspower is 87cc?
The horsepower of a 87cc engine can vary depending on its design and application, but a rough estimate is that 87cc typically produces around 2 to 3 horsepower. This is often seen in small engines like those used in lawn mowers, chainsaws, or small motorcycles. The specific horsepower rating can differ based on efficiency and tuning.
How many cc is a 5 horsepower engine?
There isn't really a straight answer for that... cc = cubic centimetre, and refers to the engines displacement. horsepower is a unit for measuring power. Power is measured at different rpm with different engines finding their max HP at certain rpm ( often referred to as 'power band') and varies due to intake, bore diameter and length of stroke. Sorry if that doesn't help at all.
What is max shaft horsepower?
Max shaft horsepower refers to the maximum power output that can be delivered by a shaft in a mechanical system, typically measured in horsepower (hp). It indicates the peak performance capability of an engine or motor, often used in marine and aviation applications to assess propulsion efficiency. This measurement is crucial for determining the operational limits and performance characteristics of engines and other machinery.
How many horsepower does an average car have?
The average car typically has between 150 to 200 horsepower. This range can vary depending on the type of vehicle, with smaller cars often having less horsepower and larger vehicles, like SUVs and trucks, usually featuring more powerful engines. Performance and luxury vehicles can exceed this average significantly. Overall, advancements in engine technology continue to influence horsepower ratings across different car models.
How much horsepower does a 450 cc motor have?
The horsepower of a 450 cc motor can vary depending on its design and application, but typically, a 450 cc engine produces between 40 to 50 horsepower. For example, in the context of motocross bikes, a 450 cc four-stroke engine often delivers around 45 to 50 horsepower. In contrast, other types of engines with the same displacement may generate different power outputs based on tuning and intended use.
Horsepower is expressed in what unit?
By Horsepower if you mean engine ouput ? If so these days it is often expressed in kilowatts rather than horsepower (1HP=0.746kW)
What is the hp of Sears 357cc engine?
The Sears 357cc engine typically produces around 10 to 12 horsepower, depending on the specific model and its intended application. These engines are often used in various outdoor power equipment, such as lawn mowers and generators. It's essential to check the manufacturer's specifications for the exact horsepower rating for a specific model.
What does BHP and Torque in a car engine's mean?
The BHP (brake horsepower) is calculated on an engine dyno with a load brake right off the crankshaft. This is often considered a misleading figure as rear wheel horsepower or the actual power that hits the ground can be significantly different in that the rating is reduced by that power going through the transmission and differencial. Torque is a measure of applied force. The horsepower and torque will be the same at 5,252rpm on gasoline powered internal combustion engines.
