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<blockquote data-quote="DiamondSCattleCo" data-source="post: 156188" data-attributes="member: 2862"><p>No. Gas motors are perfectly capable of towing anything, at the same TORQUE level. Its purely a numbers game.</p><p></p><p>Your explanation of HP was a decent one, however HP is an expression of how quickly work is being done <strong>for a given torque level</strong>. HP, in no, way, shape or form can be used to determine how much work can actually be done, only how quickly it can be done. Torque governs how much work can be done. In other words, at a given load, provided there is sufficient torque to do the work, the higher HP engine can do the work at a higher speed. But if you want to accelerate how quickly you are doing the work, you require more torque.</p><p></p><p>Thats why a 340 HP diesel can pull heavier loads than a 340 HP gas engine. Its doing it at a lower RPM, therefore at higher torque. Now, if you could get a gas engine to make 340HP at the exact same RPM as the diesel engine, ie: same torque at the same RPM, then the gas engine would do the same amount of work as the diesel, and do it the same speed.</p><p></p><p>This cannot ever happen without an increase in the gas engine size, because, as was mentioned earlier in the thread, gasoline simply does not have as many BTUs of energy stored in it. This is not a function of compression, as was alluded to. Diesel engines require high compression to ignite the fuel. This leads to further efficiency, as there is less unburnt diesel at the end of a combustion cycle (more heat, more burnt fuel).</p><p></p><p>Rod</p></blockquote><p></p>
[QUOTE="DiamondSCattleCo, post: 156188, member: 2862"] No. Gas motors are perfectly capable of towing anything, at the same TORQUE level. Its purely a numbers game. Your explanation of HP was a decent one, however HP is an expression of how quickly work is being done [b]for a given torque level[/b]. HP, in no, way, shape or form can be used to determine how much work can actually be done, only how quickly it can be done. Torque governs how much work can be done. In other words, at a given load, provided there is sufficient torque to do the work, the higher HP engine can do the work at a higher speed. But if you want to accelerate how quickly you are doing the work, you require more torque. Thats why a 340 HP diesel can pull heavier loads than a 340 HP gas engine. Its doing it at a lower RPM, therefore at higher torque. Now, if you could get a gas engine to make 340HP at the exact same RPM as the diesel engine, ie: same torque at the same RPM, then the gas engine would do the same amount of work as the diesel, and do it the same speed. This cannot ever happen without an increase in the gas engine size, because, as was mentioned earlier in the thread, gasoline simply does not have as many BTUs of energy stored in it. This is not a function of compression, as was alluded to. Diesel engines require high compression to ignite the fuel. This leads to further efficiency, as there is less unburnt diesel at the end of a combustion cycle (more heat, more burnt fuel). Rod [/QUOTE]
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