Originally Posted by Kichu
Now my question is, are you here favoring the "displacement" or "displacement with FI"?
Then you must change the title into Is There Any 'True' Replacement Of Displacement with FI?
My point is not just the FI but also ERS.
Sirji instead of wasting my time in going deep into technology, compression etc etc I'll recite my favorite and age old example again:
Hyundai Elantra is a lighter vehicle with a 1.6l engine that produces 120+ bhp of power output and 26.5 kgm of twist while a Skoda Laura M/T has got a 2.0l unit which churns out 110 odd horses with 25.5 kgm of twist.
What matters is how those horses and that twist is delivered - the power delivery thing.
Elantra has got a higher compression - this results in a lower engine life.
Elantra is lower in weight
Elantra has got nearly equally spaced gear ratios as Laura.
I won't compare the bore and stroke as the engines have a different displacement.
Elantra with its 'forced inducted' engine produces more power and torque than the Laura with its 'forced inducted' engine.
Now go and drive both the cars and you will understand what difference that added 400 cubic centimeters of displacement has done. FI has its own limitations and if this FI thing was damn true then railways wouldn't have ever needed to go with those high displacement engines. They would have got half capacity engines with a mother of turbocharger and lower gear ratios but sadly they haven't.
| Hey drive in its power band.
That's what I mean.
Higher displacement engine means you get peak power and torque at a relatively lower revs or you have a flatter torque delivery. Result:
It is easier to reach and maintain the engine in its peak band.
Even two different vehicles with same engines are not going to give exact same power delivery. |
A very simple example is: Swift and Swift Dzire. or A-star and Alto K10
Here both of them got same engine. How about their power delivery?
Power delivery of the said engines is exactly same, what makes the difference in these cases is the gearbox.
I found you were asking doubts regarding the bore vs stroke figures of Safari and Fortuner. |
When experiencing their power delivery have you considered their compression ratios, kerb weights, gear ratios etc?
When it comes to the real scenario of power delivery we need to consider everything. Not just the Bore vs stroke or displacement of an engine.
Considered all and then reached the conclusion.
Rest if you can answer my question regarding the higher revving nature of Fortuner and slow revving nature of Safari 3.0, then I'll be grateful.
Originally Posted by Releesh
I know, XUV is lighter, smaller,FWD and may be faster than Fortuner, But for a long journey with comfort and less fatigue, higher CC vehicles may be better than their smaller CC engine with turbo. Smaller engines may come with almost same torque/bhp figures, but i beleive reliablity will be more to higher CC engine.
You mean driving comfort enhancement by reducing the gearshifts?
Originally Posted by CarLoverJosh
Well then I recommend that you TD Fortuner and then TD XUV and then you tell me which one is more comfortably cruising at 140. I bet nobody here can deny my fact that XUV is anytime more comfortable cruising at higher speeds than Fortuner. Fortuner is not supposed to be driven at high speeds it should be driven at regular speeds and the occasional adrenaline rush which wants to make you do 120+ but try that in an XUV and you feel comfortable yet you have so much confidence that you can easily push for more and achieve the top speed. BTW
Innova takes a lifetime to reach 140 kmph.
Fortuner easily beats the XUV hands down. I own an XUV and I have driven the Fortuner extensively even at mad speeds and I can tell you that XUV may be quicker off the line and may have a higher top whack but the things dramatically change if you load both the cars with 6 passengers. Where the XUV isn't any more as quick as it is with a single occupant, the Fortuner has very less difference.
And this difference if further enhanced at higher speeds(I have tried 180+ in both on Noida expressway). The XUV starts loosing to Fortuner once past 100 kph and with an increase in speed the difference keeps on increasing.
Fortuner is a giant, it keeps on pulling and pulling, no matter the speed and gear you are in, but the XUV isn't near by any ways. Fortuner loses out only because of shorter gearing else it can easily kill an XUV considering the power delivery it has even in the fifth gear, all one needs is slightly tighter ratios with a slightly taller sixth gear.
And not to forget, Fortuner is a full time 4X4 as well as a heavier vehicle. Coming to Innova:
I owned one and driven it for 94k kms. The way Innova pulls while going uphill is simply unmatched. Jwala ji is our kul devi and we frequently visit there. The Innova used to take those roads as well as the roads in the hills of Uttarakhand to Gangotri, Badrinath etc with ease but XUV requires a bit of shifting on the same roads.
Originally Posted by pravin1987
I would like to a put a example by comparing the sumo gold and xylo d2/d4.
85Ps @ 3000 rpm
250Nm @ 1000 to 2000 rpm
68.7kW @ 3600 (95 PS)
218Nm @ 1400-2600
As said, power delivery and the range where the peak rpm and torque are produced makes the difference.
Well said buddy, agree on every point.