Ownership Horsepower vs. Torque: What's the Difference?

20:22  15 june  2017
20:22  15 june  2017 Source:   usnews.com

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Torque and power are what engines produce when you turn the key and press the accelerator. Yogi Berra, never known to dwell on engine particulars, would have concluded that torque and horsepower are the same thing, only different .

Torque is different than horsepower , but the two numbers are related. What ' s the Difference ? Horsepower is a measure of the amount of work done over a period of time.

When you’re comparing cars, you’ll most likely see their engine performance described in terms of horsepower, and most people perceive that a higher number means a more powerful engine. That’s right, to a degree, but there’s another number that you should consider to have the full picture of an engine’s power output.

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It’s torque, and it’s easy to find lots of geeky, math-laden explanations of what it is. In simple automotive terms, it is a measure of the twisting force produced by an engine or motor. That rotating force is then applied to gears in the transmission and sent to the wheels.

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Also Read: 4-Stroke vs 2-Stroke engine – All you need to know! Horsepower Difference between Horsepower and Torque : Many of you have probably ridden dirt bikes or street bikes, and probably know that 2-stroke dirt bikes are really fast as long as they are in the “ power band”.

Conventionally one says the bigger the numbers the better. But does anyone really know what they are or how they are related? Well, let’ s find out! Difference between Horsepower and Torque

Torque is different than horsepower, but the two numbers are related.

What's the Difference?

Horsepower is a measure of the amount of work done over a period of time. Specifically, one horsepower is the amount of effort required to lift 33,000 pounds one foot in one minute. Buyers often consider horsepower as being synonymous with a car’s speed or quickness, but it’s more complicated than that.

Of course, automakers don't have piles of 33,000-pound blocks lying around to figure out how much horsepower a car produces. They use a device called a dynamometer that measures the engine’s torque at different engine speeds, and then they perform calculations using the torque numbers and engine rpm to determine its horsepower.

From those calculations, they get graphs of horsepower and torque as engine speed increases from idle to maximum rated speed, or redline. The numbers that manufacturers publish are typically the maximum points on the graph and the engine speed where they occur.

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As nouns the difference between horsepower and torque is that horsepower is a non-metric unit of power (symbol hp) with various definitions, for different applications the most common of them is probably the mechanical horsepower , approximately equal to 7457 watts while torque is

When it comes to horsepower and torque , you want as much as you can get, right? But what does each one refer to, really? And how are these terms related? Once you’ve quickly gotten up to speed, horsepower (hp) is what keeps you there for the long haul.

For example, the 2017 Honda Accord’s four-cylinder engine produces 185 horsepower at 6,400 rpm in most models, and 181 pound-feet of torque at 3,900 rpm. By contrast, the 2017 Dodge Challenger Hellcat cranks out 707 horsepower at 6,200 rpm and 650 pound-feet of torque at 4,800 rpm.

Some cars, notably those with turbochargers and superchargers, can make peak power across a wide range of engine speeds. Take, for example, the 2017 Porsche 718 Boxster. Its turbocharged four-cylinder engine produces 300 horsepower at 6,500 rpm and 280 pound-feet of torque at engine speeds from 1,950 to 4,500 rpm. That’s called a wide power band or a flat torque curve.

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Tagged: Horsepower vs . Torque . Speak Your Mind. Tell us what you're thinking and oh, if you want a pic to show with your comment, go get a gravatar!

You are at:Home»Tips & Advices» What ’ s the Difference ? Horsepower vs . Torque . You may be familiar with power (usually called horsepower ), but you may not know what that other rating means – the torque .

Peak horsepower almost always happens in the upper right quadrant of the graph, with the combination of significant torque and high rpm. Peak torque, on the other hand, can occur at different engine speeds, depending on the type of engine and its purpose. By increasing the size of the combustion chamber or the pressure on the piston created by combustion of the fuel/air mixture in the engine cylinders, maximum engine torque can increase.

Mathematically, there’s a relationship between horsepower, torque, and engine speed. Engines that make massive amounts of torque at low engine speeds can achieve the same horsepower numbers as engines that don't make much torque but operate at very high speeds.

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In this post, we want to explain the difference between the two and also some facts. What is Horsepower ? Questions about Horsepower vs Torque ? Ask below in the comments!

There is a question on the table that I would like to be able to answer before my friend can so that I can seem like the smart guy: What is the difference between an engine' s horsepower and torque ? I’ll begin by explaining power vs . horsepower , then torque and how it is related to power .

Which One Is Better?

Which you want depends on what you need the vehicle to do. If you’re going to tow, engines with high torque are preferred, and diesels are the kings when it comes to torque. The 2016 Ram 1500 EcoDiesel only produces 240 horsepower, but it cranks our 420 pound-feet of torque. In other words, when you have to pull that boat out of the water, the Ram has plenty of low-rpm grunt to get the job done.

On the flip side are high-revving sports cars that don’t produce a lot of torque. The 2017 Mazda MX-5 Miata makes just 148 pound-feet of torque at 4,600 rpm, but drivers love to make it scream, encouraging its four-cylinder engine to make its maximum 155-horsepower at 6,000 rpm. If you were to try to pull a trailer with a Miata, the engine would have to work at high speed to generate enough horsepower to even get the car moving.

In other words, more pulling power emanates from engines that achieve peak torque at low rpm, but more sporty performance is found with those with high-revving, high-horsepower engines. It has been said that horsepower makes you go fast, but torque is the power that presses you back in your seat as you leave the start line.

In gasoline- and diesel-powered cars and trucks, both horsepower and torque climb as engine speed increases, reaching a peak, and then usually declining. With electric vehicles and some hybrids, peak torque occurs the moment the motor starts turning and declines from there. That gives electric cars like the 2017 Chevrolet Bolt sprightly performance in city driving, but their acceleration runs out of steam soon after they reach highway speeds.

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Watch The Dodge Challenger SRT Demon's 840-HP V8 Engine Scream On the Dyno .
<p>It had to be factory-tested on a setup originally designed for NASCAR engines.</p>To wring out every last bit of power from the Hellcat's existing 6.2-liter engine, the tiny crack team of FCA SRT engineers worked in near-total secrecy to redesign over 60 percent of the internals, including the cast-iron block, high-strength alloy pistons, powder-forged connecting rods, and crankshaft. They also rigged up the car's special air intake chiller system and rigged the whole thing to run on 100-octane gas. Parts suppliers were given the bare minimum details to work with, sometimes just a target figure, and internal simulator work helped piece everything together.

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