Machines | Horsepower vs Torque - Explained
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What's the difference between horsepower and torque? What does it mean to me? An explanation of horsepower and torque, and a way of explaining it so everyone can understand what they mean. Cars with high torque are powerful and strong; cars with high horsepower are fast, but ultimately it all depends on gearing. NOTE 1: The G force you feel when accelerating is 'proportional' to the torque curve at the wheels, not the engine torque or horsepower. The engine torque is quite meaningless by itself, because it is modified by the gearbox and final drive, but losses withstanding, it does determine what people 'feel'. Torque is a force, and hence produces thrust. Horsepower is not a force, and does not magically 'take over' at some point as some people seem to imagine. Think wheel torque! NOTE 2: Looking back, the analogy wasn't such a good idea; what I implying is that many vehicles with high torque that are geared low tend to be heavy, so added weight affects them little, where as small engines have lower torque, but rev higher, and are used in lighter vehicles where additional weight makes a large impact. Related Videos: HP vs. TQ - F1 vs. NASCAR - http://youtu.be/CxK0x7AE3s8 Please feel free to rate, comment, and subscribe! And don't forget to check out my Facebook page: http://www.facebook.com/engineeringexplained Also check out my official website: Make suggestions, participate in forums, enter for Car of the Month, learn through logically ordered lessons, read FAQs, and plan your future! http://www.howdoesacarwork.com NEW VIDEOS EVERY WEDNESDAY!
Comments
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What do you think about putting a 115 ps engine, 1.0 3 cylinder in an SUV (VW style)?
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paused the vid in between to say a super thanx!
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qurstion: When I read 194 horse power on a graph, is they specifying that it's 194 to the wheels or to the crank? or does it depend on the place doing it?
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What it the torque to horsepower ratio is the same more or less? For example, I have a sports car that has 260hp and 260 lbft of torque. What are the disadvantages or advantages? I am assuming that there are none, but just in case?
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Whoa! old school EE!
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thnk u bro do u have some more videos..
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Of course, torque and hp are "managed" by gearing. Low torque with high hp can be made to pull if the gearing is lowered (1st gear as opposed to 5th gear). I like motorcycles with high torque as compared to high hp because I ride double up into the mountains of Lake Tahoe. How about explaining how the different configurations of engines (motorcycles) come up with being either a torque oriented engine (like a V-Twin) or a hp oriented engine (like an inline 4). Stroker are torque monsters, but I had an inline 6 cylinder that had a slight stroker configuration so it had good hp (120 hp) and good torque (85 ft/lbs). The KZ1300, 6 cylinder was a stroker configuration, inline 6. Compare a V-Twin to Triumphs inline 3 Rocket III (longitudinal inline triple not the across the frame inline triple).
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my cars manufacture has shown a torque of 220nm from 1500 to 2750 rpm. from this the bhp should be 115 but the peak bhp rated by the manufacture is 90bhp at 4000 rpm why is it so
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Wow that is a good analogy Low HP high torque High HP low torque so my question is as rpm increases will it effect the engine. Also, in a over time basis as rpm increases effects components causing problem in the long run basically speaking excessive rpms?
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i like this, my rc car makes sum 1.7hp but I can not get on it and ride it... if i reduced gears enough i could actually ride it but somehow i worry about life expectancy of my motor if i did so.
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great video
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why do higher volume engines have greater torque compared to lower volume engines?
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I'm nearly 30 years old and have been working on my own cars my entire life. I also enjoy auto racing in general and could never get a solid understanding on horsepower until watching this video. Thank you. I've always been told it was just a marketing scam used to sell sports cars....
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The DOHC 4.0 I6T from the Australian XR6 Turbo and FPV F6 is a great bodybuilder/Sprinter mix with the right size Turbo. Mine makes decent boost from 1300 rpm with crazy torque from 1500 rpm pretty much to the 6k redline. It chugs along happily in sixth gear up almost any hill at 1300 rpm or rocket all the way to bang the limiter hahaha
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Is there a difference in a drag race between identical cars except that one has let's say 500 Nm more torque (The weight and horsepower are the same)
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Horsepower is how fast you hit a barrier, Torque is how far you drag it with you.
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HI, I just want to use a engine damper to increase torque. does this really have an effect on performance?
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What i think HP is power per second, and Torque is amount of power per rotation. did i get it wrong ?
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"A low-volume, high-revving engine, say a 2 litre turbo". American drivers sure have a different definition of low and high volume engines then the rest of the world.
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Can I deduce that horsepower is how efficiently torque is used? Am a bit confused.