1946 Fordson Major E27N 4.4 Litre 4-Cyl Petrol/Kerosene Tractor (27HP) - Ploughing Staffordshire & Birmingham Agricultural Society Ploughing Match Saturday 16 September 2017
how do we interpret the octave
Let's get any engines.
For example, let this engine be 100 horsepower.
First of all, this engine is not 100 horsepower at all times. It is 100 horsepower at a certain speed and gives its maximum power only at that speed.
It produces lower power below and above that cycle.
The same goes for torque. The specified torque for the engine applies to a certain speed. In other words, the maximum values are written in the data.
Again, less torque is produced below and above this speed.
In general, the maximum horsepower speed is higher than the maximum torque speed. Because the maximum torque from the rotation of the torque continues to increase, even though the rotation continues to increase, its mathematical multiplications continue to increase. (until we reach the speed at which maximum horsepower is obtained) where these speeds will be determined by the adjustment (design) of the eccentric shaft, but this is currently out of the question.
An engine is basically the most aggressive at the speed at which it always gives its highest torque, regardless of the conditions. But now you'll say why there's a high speed, why there's horsepower.
It's the gearbox.
Almost every system has a gearbox (gearbox).
This box allows the wheels to rotate at different speeds with the engine. Buddha gives us an advantage in terms of torque. Remember, from high school, the power lever, the load lever, or the spinning wheels. When we lost from the road, we gained from strength, didn't we
Given the gear ratios, almost always the engine rotates faster than the wheels.
In other words, if the engine produces 100Nm (newton meter) of torque, for example, and the transmission ratio is a net 8:1, including the first and last, 800nm of torque is transferred to the wheels. (We neglect losses) every time you increase the gear, this torque decreases. (Because the gear ratio changes and the wheels start spinning faster than the previous Gear)
That's where the high speed comes in. Will need to change the lower gears for a high revving engine, or let's say, a high-speed non-gear motor STILL in the same gear to be raised at some point (it will be larger than the product) with the torque of the engine to the gearbox gear is still small despite the decrease in torque is transferred to the wheels that will be higher than other vehicles. High-speed engines therefore appear to have high horsepower. That's a good thing, but it's not the only point to look at.