Tata Tigor (Kite-5) Compact Sedan Unveiled

[gearhead2]

Even I was under the same impression till some time ago. In layman terms, a turbo engine tries to reuse the blown out air in the first go and reuse it as a second attempt but more air needs more fuel to be combined to generate power. If you aim to achieve high power keep the power (PS/bhp) as constant, a turbo engine might(or might not) lead to better FE but if you keep engine size constant it probably reduces FE (giving more power) and yes the engine Tata would keep them same as Tiago. You see most petrol engines 1.2L are claiming FE >20kmpl but even 1L Turbo petrol engines claim FE around 19kmpl (ecosport). What I found is that it reduces FE if you keep the engine size constant. Also adding a Turbo is more effective to a diesel engine compared to a gasoline one.

Abhishek, I'll try & put it like this, in light of the practice followed in my profession - in t/charging of contemporary IC engines (both spark & compr. ignition), two paths are available - either the waste-gate/ EGR route (as you mention) or the air-dump route where excess air is dumped via the air-dump v/v during the fuel over-run cut-off stage - I believe this is more common in high-performance exotics.

In a well-designed & integrated turbo set-up, air mass-flow rate is increased, fuel consumption also increases. But the two rates (in sync) favour a raised SFOC (spec. fuel oil cons.) upto an optimum level, beyond which obviously, design parameters go out of the window!.

You are right in that diesels lend themselves very well to t/charging because of their particular combustion characteristics (lower flame-front propagation speeds being a major consideration). This allows for far more accurate injection mapping (piezo-electrics are a great boon here) and gives fine control of fuel consumption, trying to stay within the optimum band as much as possible. Also, turbo-lag can be better minimized by choosing the optimum t/ch - with the lightest pyrometric materials and the lowest rotor inertia.

I guess the problem arises with the ultra small (1.0 L or <) t/charged gasoline engines (Eco-boost or similar) where the demands of optimum performance/max. FE, in the smallest package, leads to strange parameters! Is it any wonder that no one takes the ARAI figures seriously - except of course the mfrs themselves!

 

[AbhisekVerma]

I'll try & put it like this,............except of course the mfrs themselves!

Thanks for putting this up . Some of which went over my head Even the earlier information I got was from my friend (who coincidentally happened to be a Marine engineer himself). Well to a layman, ARAI figures do matter to a certain extent.

 

[DJ bro]

I don't know why people were expecting it to come with 1.3MJD. Its Tiago sedan and Tiago too doesn't come with 1.3D. And with Tiago/Tigor Tata had in mind VFM full featured cars. They might give it as option later though it would increase cost due to royalties going to Fiat. What I find bit wierd is R14 for D and R15 for P. R15 is a bit Overkill for 3cyl engined already heavy small car. But it should be variant wise as in Tiago I feel. There's something missing here. I sincerely hope Tata removes that manual boot lamp button in Tigor. Its disappointing.

That boot lamp button is actually an actuator. Even if you leave it on, the lamp will be off if the boot is closed. That is how even the Tiago has.

 

[AbhisekVerma]

That boot lamp button is actually an actuator. Even if you leave it on, the lamp will be off if the boot is closed. That is how even the Tiago has.

Are you sure? I went out for few days and my battery went 0 and remote was not working. After a drive battery was up and when I opened my boot to put something inside, boot lamp was on.

 

[modifii]

That boot lamp button is actually an actuator. Even if you leave it on, the lamp will be off if the boot is closed. That is how even the Tiago has.

Unfortunately that's not the case in Tiago, boot lamp remains on even if you close hatch door.

 

[allhyundaicars]

Unfortunately that's not the case in Tiago, boot lamp remains on even if you close hatch door.

So you have to manually turn on and turn off the lamp ?

 

[modifii]

So you have to manually turn on and turn off the lamp ?

Yes, you have to manually switch off lamp.

 

[AbhisekVerma]

Yes, you have to manually switch off lamp.

yeah and after driving Grand i10 for continous 4 months, I just don't have the habit of turning it off and I always open my boot find that its on
This is the worst design element in Tiago

 

[Prabhagar]

Yes, you have to manually switch off lamp.

So you have to manually turn on and turn off the lamp ?

yeah and after driving Grand i10 for continous 4 months, I just don't have the habit of turning it off and I always open my boot find that its on
This is the worst design element in Tiago

Unfortunately that's not the case in Tiago, boot lamp remains on even if you close hatch door.

Are you sure? I went out for few days and my battery went 0 and remote was not working. After a drive battery was up and when I opened my boot to put something inside, boot lamp was on.

DJ bro is right, I have tested this in my Tiago. Boot lamp turns off once the car is locked or after some time when not locked.

 

[DJ bro]

Unfortunately that's not the case in Tiago, boot lamp remains on even if you close hatch door.

it goes off in 10 seconds after you close the boot.

 

[Prabhagar]

DJ bro is right, I have tested this in my Tiago. Boot lamp turns off once the car is locked or after some time when not locked.

EDIT: Boot lamp goes off immediately when car is locked and ~30 seconds when left unlocked. It goes off in theater dimming effect along with cabin lamp .

 

[AbhisekVerma]

@Prabhagar, then I am wondering why was my boot lamp on when I opened boot of the car after many days? Is it flaw in my car? Service Center called for Harman Software update. Will check this too with them.

 

[Akash1886]

Friends,

Some official pics of the Delhi Media Drive Event.









​

Regards

Akash

 

[GautamJ]

@Prabhagar, then I am wondering why was my boot lamp on when I opened boot of the car after many days? Is it flaw in my car? Service Center called for Harman Software update. Will check this too with them.

It might have come on when you unlocked it.

 

[Prabhagar]

@Prabhagar, then I am wondering why was my boot lamp on when I opened boot of the car after many days? Is it flaw in my car? Service Center called for Harman Software update. Will check this too with them.

As GautamJ said, it turns ON when you unlock the car or open the boot using key. Try checking this with your parcel tray removed.

Friends,

Some official pics of the Delhi Media Drive Event.​

15 inchers on this car looks like an overkill to me. The regular 14" Tiago alloys looks way better IMO. May be it's the photos, I will have to see them in flesh.
Apart from the additional boot space and fancy features, do we get rear impact bars under the bumper in compact sedans?​