Well an engine has a limited amount of power it can put out. You can gear it and make lots of torque, but you wouldn’t be able to go very fast. If you gear it for speed, you will have less torque, and accelerate slower but be able to top out faster (until you don’t have enough torque to overcome air resistance and friction). So it’s a balancing act between torque and speed. This is why low gears and overdrive gears exist. Low gears for dumping all that power into a wheel turning slower, and high gears for making that wheel spin faster but have less torque behind it.
The more torque you make up with gearing the slower you go. Do some research on a 4Lo transfer case. They generate tons of torque, but you can only go like 25mph. See also a semi truck in first gear 😆
However an engine’s torque is not constant. There’s an engine speed where it provides maximum torque(most force), and somewhat above that is the point where it provides most power.
If your gear ratio and current speed is putting your engine where it’s making maximum horsepower, that’s the best you can do.
If you’re below that speed for your current gear, the whole torque vs rpm curve starts to matter. An engine with “more torque” will be making more power at sub-optimal RPM, if the maximum horsepower is the same for both engines. As most vehicles have a few fixed gear ratios, this matters. If everything had a perfectly efficient CVT, you’d always accelerate fastest with the engine running at peak horsepower.
You could, but the RPM will decrease if the torque is higher. That is the RPM of the wheels and they determine the speed. Any gearing you put in to increase the wheel speed would reduce torque.
The reason is power = torque * RPM, and the power is no something gearing can increase, at best it is equal,in practice,e there are some losses. For more power, you need to change the engine. Different engines have different power outputs at the same RPM, and more power at the same RPM mean higher torque.
This is something that is done but for tractors and other vehicles that need a lot of torque, but do not need high speed. It is not a solution if you also require high vehicle speed.
Cars intended for off-road use that are almost always 4×4 will have a low and high gerarbox too that provide more torque but descrease speed. But as for tractors, it decreases the speed. So the idea is used in car when it can be usefull.
Regular cars do not need a so much torque at low speed so the gearbox is not installet, it would could money, increase weight and therfore fuel usage, a partthat can rquire maintains,. So if you need a car with very high torque at low speed, get a 4×4 with a low- high gearbox.
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Well an engine has a limited amount of power it can put out. You can gear it and make lots of torque, but you wouldn’t be able to go very fast. If you gear it for speed, you will have less torque, and accelerate slower but be able to top out faster (until you don’t have enough torque to overcome air resistance and friction). So it’s a balancing act between torque and speed. This is why low gears and overdrive gears exist. Low gears for dumping all that power into a wheel turning slower, and high gears for making that wheel spin faster but have less torque behind it.
The more torque you make up with gearing the slower you go. Do some research on a 4Lo transfer case. They generate tons of torque, but you can only go like 25mph. See also a semi truck in first gear 😆
Power = torque * rate of revolution
However an engine’s torque is not constant. There’s an engine speed where it provides maximum torque(most force), and somewhat above that is the point where it provides most power.
If your gear ratio and current speed is putting your engine where it’s making maximum horsepower, that’s the best you can do.
If you’re below that speed for your current gear, the whole torque vs rpm curve starts to matter. An engine with “more torque” will be making more power at sub-optimal RPM, if the maximum horsepower is the same for both engines. As most vehicles have a few fixed gear ratios, this matters. If everything had a perfectly efficient CVT, you’d always accelerate fastest with the engine running at peak horsepower.
You could, but the RPM will decrease if the torque is higher. That is the RPM of the wheels and they determine the speed. Any gearing you put in to increase the wheel speed would reduce torque.
The reason is power = torque * RPM, and the power is no something gearing can increase, at best it is equal,in practice,e there are some losses. For more power, you need to change the engine. Different engines have different power outputs at the same RPM, and more power at the same RPM mean higher torque.
This is something that is done but for tractors and other vehicles that need a lot of torque, but do not need high speed. It is not a solution if you also require high vehicle speed.
Cars intended for off-road use that are almost always 4×4 will have a low and high gerarbox too that provide more torque but descrease speed. But as for tractors, it decreases the speed. So the idea is used in car when it can be usefull.
Regular cars do not need a so much torque at low speed so the gearbox is not installet, it would could money, increase weight and therfore fuel usage, a partthat can rquire maintains,. So if you need a car with very high torque at low speed, get a 4×4 with a low- high gearbox.