torque is torque . power is power mah.. torque stay at 200nm and power can increase to 150bhp right?

many of the pug range use same solution 1.6t engine.. later if want to buy can get cheap or not?
i remember my 407 2L engine rock solid only electronics glitchy.. the turbo one..got intermittent power, scary..

as you said gear ratio is important, so CVT acterly takes care of the problem but maybe different cvt gives different results.. ideally maximum acceleration and fuel saving from a given engine is best extracted from the engine with CVT thats why hybrid use cvt.. but then different makes produce different results kua..

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Added on February 15, 2012, 8:06 pmyeah gearbox not a joy to use.. and those time not many potong kereta handle AL4 so sked to trash it too much if it fail after waranty..
but i equipped my 407 with 18inch 225 tires, really a handling joy... if only they brought in the 2.2 with 6speed auto..

This post has been edited by ar188: Feb 15 2012, 08:06 PM

i just sold the blm saga 2009 1.3auto, got tak tak tak sound the engine, is this that iafm thing causing it ar?

can it be claimed under waranty or how much this thing cost to repair.. i dowan diesel sounding proton..

anyway sold liao..

well he's talking about low to medium torque figure, which is actually low to medium rpm power. while when we talk about power, it refers to max rpm power the engine can produce.
it'll be foolish to think 205nm max torque is produced at 138bhp so go figure.

This post has been edited by ar188: Feb 15 2012, 09:44 PM

no so, imagine vtec is 2 step, while the other is many many fine step..

hard to explain in words cos power is not a direct measurement, it's measured figure derived from torque measurement of a rotating crankshaft.

a simple example


u see 2 curves, the torque curve doesnt peak at high rpm, while the power curve peaks at high rpm..

to get this curve, only torque (orange) is measured, power (blue) curve is derived from calculation of the torque x rpm

This post has been edited by ar188: Feb 15 2012, 10:05 PM

since i brought the curve out, easier to explain 1 step further.. if you look at max torque lets say at 4000rpm, the power is only 60-70% of the maximum power at 6000rpm..

so ideally with CVT, while you are at 4000rpm with normal gearbox trying to rev to 6000rpm, CVT will already allow you to stay at 6000rpm, making it 30% more power at that instant, that's why it's the most effective way to unlock all the power from your engine and will provide the best acceleration curve of the car..
of coz the downside is the dreaded rubberband effect, engine rev shoot up, while car barely moving.. so the behaviour of the CVT changing ratio software according to load conditions also need to come into play and need to be smart, so that people dun get buzzed out the ears when driving CVT car..

This post has been edited by ar188: Feb 15 2012, 10:14 PM

your source said this, which i already said. rpm is measured, torque is measured. power is calculated or derived from those 2. i already said it above. dun understand any further need to do engineering course..

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Added on February 15, 2012, 10:19 pmoh forgot, earlier discussion, i mention let torque be 200nm and power increase to 150bhp right? that's different situation cos there is turbo element mah.. you can control the boost which affects torque and power.

This post has been edited by ar188: Feb 15 2012, 10:19 PM

why cannot seperate the 2 condition, both condition is at different rpm wot.
i said set the conditon at mid range rpm, boost until 200nm, while power at high rpm can increase to 150bhp, obviously by boosting the torque at that high rpm..

i didn't say 200nm at 150bhp at 6000rpm

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Added on February 15, 2012, 10:30 pmu have a point about reliability but then if a turbo 1.6L doing 150bhp should not be really stressful cos for other brand of turbo engines mah not even 100bhp per litre.. if not reliable then have to redesign the engine lor..

This post has been edited by ar188: Feb 15 2012, 10:30 PM

having more power is at standby only mah.. on demand when you need it.
if you don;t need that, then just rev to medium rpm, max torque lor.. as you know, max torque, the power isn't 100% it;s around 60-70% only wat.. have 30% more on standby is useful but doesnt mean you dont need to use rev to 6k rpm everytime.
its like why drive a 2L car when 1.5L can pull you point A to B? more power standby at your pedal mah.. not to say need to rev all the way when driving right?

haha, and in honor of a fellow engineer who likes crazy frog.. tailor made malaysian car..

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Added on February 15, 2012, 10:50 pmyes gearbox is usually see torque figure, but power does come in due to rpm, not every gearbox can tahan 8000rpm at say 300nm,... hence got power limitation also..

This post has been edited by ar188: Feb 15 2012, 10:50 PM

theoretically it is.. because during 0-100 it's the only gearbox that doesnt drop rpm like normal fix ratio gearbox i.e. maintain full power of the engine throughout the 0-100 duration. of cos in reallife cvt also got many types.. some good some so so..

that's why you get one that can tahan ratings of 3.5L power/torque but used on 2L.. then will not shred to pieces so easily..

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Added on February 15, 2012, 11:15 pmthat is quite true but today the inspira chasing c200 video the engine like bee buzzing sound..

This post has been edited by ar188: Feb 15 2012, 11:15 PM

but i tot the photo come out already? won't be different 1month later..

with sticker, then sure increase 100bhp

why u care what others buy wor? your car now very exciting ar?

thanks for the pics.. looking at the silhouette doesnt look that attractive shape like the concept. much taller h. city like..

oh, so the pictures are a series of shots of them rushing to drive away from u?