I understand that VW group yesterday made an announcement that it's new 1.5 petrol engine will be replacing the 1.4 and it will give better fuel consumption in real world driving.

Obviously trying to deflect from dieselgate (the new 1.5 litre diesel is about year after the petrol)

Seems to have both active cylinder technology, and variable turbine geometry so that max torque is from 1300rpm upwards. It uses a high 12.5 compression ratio (current 1.4 is only 10.5 ratio). I think Mazda skyactive is also high compression ratio.

It indicated it will be available on Octavia (and other VW group cars) later this year.

Any guesses which build week in will appear, will it be usual changeover week 22-23 to MY17 or later ?

http://www.carscoops.com/2016/04/vws-next-gen-15l-tsi-engine-detailed.html

It's available in 2 power outputs, 128bhp and 150bhp

Edited 29 April, 201610 yr by SurreyJohn

Pretty (b)leading edge technology for what is really a budget car maker.

I expect I will running my current vehicle for at least three more years and I would not be too keen to be an early adopter of this anyway.

Edited 29 April, 201610 yr by Gerrycan

Whilst evolution and technological advance is laudable, it makes you wonder what they are hiding?

Inherent problems in the existing engines?

The existing 1.2 110ps and 1.4 150ps engines have only been out for 2 years, the 1.4 TSi ACT hasn't even made it to the Octavia yet.

Maybe I'm old, but engine designs used to do around 10 years.

Are VW constantly running away from there engineering mistakes? Rather than getting it right?

Whilst evolution and technological advance is laudable, it makes you wonder what they are hiding?

Inherent problems in the existing engines?

The existing 1.2 110ps and 1.4 150ps engines have only been out for 2 years, the 1.4 TSi ACT hasn't even made it to the Octavia yet.

Maybe I'm old, but engine designs used to do around 10 years.

Are VW constantly running away from there engineering mistakes? Rather than getting it right?

Or have minor changes been made and released as a new model as part of a marketing exercise to put older engines (and recent press) behind them. A bit like the update to version 1.8 become 2.0 rather than 1.9

Could it just be bored out to 1.5 but with better electronics and turbo? Seeing as it's still an ea211?

Could it just be bored out to 1.5 but with better electronics and turbo? Seeing as it's still an ea211?

 

The compression is much higher ,  the injection system runs at a much higher pressure as well as introducing electronically controlled variable vane turbo technology - All designed to reduce emissions ,  especially particulates. Presumably this is to achieve Euro 6 ( c  ) required by september 2017.

 

I for one will avoid until the new engine design has been in use for a few years - I tend to avoid newly introduced technologies to avoid any teething problems  

Edited 30 April, 201610 yr by bigjohn

So yeah more of an evolution.

I won't be buying an octy with a small engine myself but if I was I'd by inclined to see how it performs before getting one

No one should be surprised by this, which will be driven by the need to meet new emission & efficiency standards. To that end, this engine's compatibility with a hybrid unit will be important.

Dieselgate aside, it's obvious that there is significant doubt about diesel as an environment-friendly choice because of the continuing problems with sooty particulates. So don't be surprised if governments decide to tax diesels more heavily in future.

Against that background, all manufacturers face pressure to produce better-performing petrol engines. Some of them will be keeping an eye on what's happening in F1, where the hybrid petrol engines have been making huge efficiency gains through new injection/combustion technologies.

Would this engine be similar to the new(ish) 1.5l petrol 160ps turbo? AFAIK that ford engine used to be 150ps but it has been rejiggedand now it produces 160ps. It's used in the fiesta and the Mondeo. I have no idea about running pressures etc, it's an ecoboost engine with lower emissions.

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Dieselgate aside, it's obvious that there is significant doubt about diesel as an environment-friendly choice because of the continuing problems with sooty particulates. So don't be surprised if governments decide to tax diesels more heavily in future.

 

 

Current technology direct injection petrol engines (Euro 5 +) chuck out more particulates than euro 5 + diesel engines (with DPF)