To get the maximum torque delivered to the wheels you need the maximum possible gear ratio. One must first look at the gear ratios (which "decrease" the speed of revolution and "increase" the torque. However the torque delivered by the engines changes as one progresses through the drive chain to the wheels. ![]() You will note that the Lamborghini engine has a higher maximum engine speed.Īs I stated before the mass of the vehicles is a contributory factor to their acceleration and as the Lamborghini (1690 kg) has a mass which is much less than than of the Ford (2745 kg - note the difference in mass from that given by the OP which was the gross value) for a given force the Lamborghini's acceleration will be much larger. I have redrawn the graphs from my primary sources because of mixed units eg foot-pound and newton-metre for the torque and horsepower and kilowatt for the power.Īnother problem is that these vehicles have different specifications for different engines and different years so what you see is a rough sketch. Please note that I have figures for the petrol version of the Ford and I have quoted figures for the diesel version later.įor the two vehicles in question the power and torque characteristics look something like this. The power and torque specifications that you have given are for the engine of the vehicle at particular engine speeds which tend to be maxima.įor the engine power $P$ and torque $\tau$ are linked $P=\tau\, \omega\,$ where $\omega$ is the angular speed of the engine. The acceleration of a vehicle $a$ depends on its mass (m) and the force applied on it $F$ via tyre/ground contact $\Rightarrow F = ma$. The specifications that you have given can certainly be used to give you an answer to your question but to make a better comparison more information needs to be provided. The next thing is that comparison can often be a nightmare because of the mix of units which are used.įor example it depends on your background as to whether you "appreciate" better what 100 horsepower (hp) or 75 kW is. ![]() The first thing to say is that the figures given the manufacturers as well as being informative are there to sell vehicles.
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