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Old 17th July 2014, 10:04   #181
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

TATA is marketing the engine aggressively, found few games and apps in Google play and Apple App store

https://play.google.com/store/apps/d....TATA.revotron
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Old 27th July 2014, 15:09   #182
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

As per this week's (Hormazd) Autocar show, the Revotron is only a short term strategy before Tata come out with en entirely new family of all alloy engines.
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Old 27th July 2014, 15:41   #183
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As per this week's (Hormazd) Autocar show, the Revotron is only a short term strategy before Tata come out with en entirely new family of all alloy engines.

Yes Tata is working on a new alloy engine, but that will carry forward the Revotron turbo tech. Not sure how that is "short term" strategy!

Rather the Revotron is the tried, tested & trusted engine block from the Xeta.


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Old 28th July 2014, 11:07   #184
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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As per this week's (Hormazd) Autocar show, the Revotron is only a short term strategy before Tata come out with en entirely new family of all alloy engines.
This is mainly for the Jaguars. A scaled down version could be used in Tata vehicles in the future.
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Old 29th July 2014, 13:35   #185
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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This is mainly for the Jaguars. A scaled down version could be used in Tata vehicles in the future.
The Revotron series appears quite independent of JLR and meant primarily for use by TML products. Ofcourse in the course of development, they may make big use of JLR and European Tech Center expertise as is logican and expected. As per media reports, the first of the next gen Revotrons would be a 1.2 ltr 3cyl turbo with direct petrol injection. The engine design should be modular and scalable from perhaps 800cc to ~2 Ltr. In this range it is difficult to conceive if the engines could see application in any JLR product. In any case, JLR just showed off its own product in the "Ingenium" nomenclature (diesel though). Maybe the next Safari / Aria engine could benefit from this design.

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Old 29th July 2014, 21:40   #186
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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When it was launched along with the Kappa from hyundai, 85 odd horses for the 1.2l engine (Naturally aspirated ) was high. Same followed by the Honda I-Vtec. Now in case this revotron at least gave five horses more, it would have definitely been worth it. Driveabilty can be greatly altered by gearing. If that was their prime focus, as I told in the previous post, a good spread of ratios would have been a lot cheaper as an option than provide a turbo and related stuff. That's where decisions come to play.
It's not always about the BHP. If you drive a diesel Figo or Micra and a swift diesel in the city, you would not believe that the Swift has more horsepower, or that the Micra has the least. It's about the torque spread. That's what a light turbo does, it compensates for the lower torque generated at low rpm in small capacity engines.

Anyway, if you look at it, it is pretty cool that Tata has managed to extract 85PS from a 1.2L petrol without 4v/cyl, DOHC, or Variable valve timing. A turbo is the least complicated and yet highly efficient method for increasing torque and driveability in small engines.

Tata have managed to get 100PS from the same petrol engine in 1.4L form, without a turbo, just DOHC and 16 valves for the Indigo XL as far back as 2007, so it's not as if they don't have the tech.

In my experience, light, high-revving engines like the Swift and the Hyundai 1.2L are fun on the highways, but needs a fair bit of footwork in the city. Also, they are thirsty when coupled with an AT because it always runs at higher rpms to make sufficient torque. The increased torque at lower rpm from the Revotron should make it more efficient, as would the AMT, as it would not have to shift down as much.

I think that Tata has done well here and made the right call. Time and sales figures will tell.
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Old 29th July 2014, 23:58   #187
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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It's not always about the BHP. If you drive a diesel Figo or Micra and a swift diesel in the city, you would not believe that the Swift has more horsepower, or that the Micra has the least. It's about the torque spread. That's what a light turbo does, it compensates for the lower torque generated at low rpm in small capacity engines.

.
Completely agree on the technical part. Question is why they are protraying it as a performance oriented car/engine(Kartikeyan-Racing ads-performance mode) when here it is being regarded as an engine oriented towards good driveability *in the city*

That's the whole point many are trying to make here. They should advertise the actual benefit of the engine, in this case the low end torque and driveability. Instead when they portray it as a high performance engine and the engine doesn't deliver, people call it a hype.
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Old 30th July 2014, 00:14   #188
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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That's the whole point many are trying to make here. They should advertise the actual benefit of the engine, in this case the low end torque and driveability. Instead when they portray it as a high performance engine and the engine doesn't deliver, people call it a hype.
Are they portraying it as a high performance engine ? I did not see any ads saying so. Am I missing something ?
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Old 30th July 2014, 01:18   #189
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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Completely agree on the technical part. Question is why they are protraying it as a performance oriented car/engine(Kartikeyan-Racing ads-performance mode) when here it is being regarded as an engine oriented towards good driveability *in the city*

That's the whole point many are trying to make here. They should advertise the actual benefit of the engine, in this case the low end torque and driveability. Instead when they portray it as a high performance engine and the engine doesn't deliver, people call it a hype.
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Are they portraying it as a high performance engine ? I did not see any ads saying so. Am I missing something ?
AFAIK Narain Karthikeyan was involved in the development of the car, and its handling/performance. So what's the problem with him being in the ad?

A car with better throttle response does feel quicker, whether it be in the city or in the highway. If you look at the numbers, 89 PS is as good as what the competition with the 'hooligan ads' is offering, so clearly it isn't as if it is lacking in performance, or far behind the competition. Plus, it is the only car in its segment that has a 'sport' mode, and reviewers who have driven the car do say that there's a notable increase in performance in the 'sport' mode, and that was not even the production version they were driving.

My point is, it isn't like they are selling a 65/70 PS car and projecting it as a performance car. IMHO, it's better than a car that makes 90/100PS on paper and feels like it has about 75. Let's wait and see until the final production version comes out and a few more of us have done proper TDs, before passing judgement. Car adverts are to be taken with a bit of salt always, and there has never been an ad extolling 'driveability' over performance, simply because that doesn't sell.

Last edited by vivekgk : 30th July 2014 at 01:41.
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Old 30th July 2014, 02:16   #190
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Default Re: Tata Motors introduces 1.2L turbo-petrol Revotron engine

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AFAIK Narain Karthikeyan was involved in the development of the car, and its handling/performance. So what's the problem with him being in the ad?

My point is, it isn't like they are selling a 65/70 PS car and projecting it as a performance car. IMHO, it's better than a car that makes 90/100PS on paper and feels like it has about 75. Let's wait and see until the final production version comes out and a few more of us have done proper TDs, before passing judgement. Car adverts are to be taken with a bit of salt always, and there has never been an ad extolling 'driveability' over performance, simply because that doesn't sell.
We were trying to say the same thing. Someone said Tata was projecting Revotron 1.2 as a performance engine (of all the things). But for me, TATA has not done anything like that till date. The only thing they say is that it is a new engine with a turbo and 3 driving modes. Did they ever say it takes 5secs to reach 100kmph ? They have not. And Karthikeyan being involved in testing a car does not mean he tested only the performance of the car, there are other things he might know better than the factory drivers perhaps.
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