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Originally Posted by rrnsss  Sir, I assume you have mistyped. Petrol engines do NOT rev more to produce the same torque, they actually produce less torque but they can / have to rev more if they have to produce the same max BHP.
No, I had used petrol just to highlight a point. The same arguement is true when comparing two diesel engines or diesel and kerosine, kerosine and peanut oil engine. The fuel does not matter.
As I said before the mathematical formula does not care about the engine for which it is calculating the power.
Yes we are getting off topic, so this will be my last post on this. If I you do not believe that engine A having lesser max torque that Engine B but producing same max bhp as engine B has to have a wider torque curve, then I cannot take the arguement any further as you do not agree on the fundamental science.
Anyway , Wider band engine as compared to a narrower torque band engine with the same Max BHP means lesser gear shifts because you can acclerate and decelrate and acclerate back through a wider rpm range in the same gear as compared to the narrower band engine |
The last few arguments have been very tempting to decide not to comment on. I would probably agree to your argument about a wider torque-band, provided the maximum power/torque rpms are the same in both cases. In this case we do not have adequate information.
On top of it, the presence of a wider torque band does not necessarily say that a car will be easy to drive, that depends on how much torque the engine is producing at any given rpm anyway.
Moreover how fast a car will be does not necessarily gets guided by the flat-ness of the torque band, but the area under the torque curve.
Bring into it the factor of how the driver is using the rpms in terms of which gear he is using. The area under the curve between the boundaries of the gearshift rpms (for each individual gear) is what matters most.
So although it might appear that a flatter torque curve is better, a peaky torque curve isn't to be regarded as bad when in the right hands. Its more like a case of autofocus camera vs SLR's, average users would probably do better with the former.
Now as far as suitability in the Palio package is concerned, lets understand that no other car in that bracket generates the kind of passion this one does. So it is quite logical to expect the followers to be dissapointed with a smaller number, even if, it might appear to be made in a general interest. Which too, I would like to beleive is not the case, the decision seems to have been made purely from a business case perspective, wherein the Tata branded car (X1) might get the 19kgm torque engine to keep its upper hand over the similar engined palio , in turn the GP and Linea will get the 90bhp state of tune.
The numbers in the spec sheets do matter, but merely serve as an academic exercise for thumb rule expectation settings. To know the truth, you might have to bring in too many factors to be discussed on this forum.