Where I live, being very flat and without fast roads (no dual carriageways or motorways) the engine in my car is very often in Two Cylinder Mode. 

Does anyone know if its always the same two cylinders that are shut down?

If so, is that likely to cause any `issues`...(have you noticed that we don't get problems these days, just `issues`😁)... due to lack of driving at the moment?

Many thanks.

8 minutes ago, mandp said:

Does anyone know if its always the same two cylinders that are shut down?

If so, is that likely to cause any `issues`

Yes its the inner two cylinders.

 

No problems reported so far and they've been using that tech since 2015 in the Superb with the 1.4tsi

 

I suppose the spark plugs in the inner 2 cylinders wear a little less than the outer two 😀

Edited 9 April, 20206 yr by xman

does ACT function has migrated to 1.5 TSI?

1.4 were clearly labeled as ACT (Active Cylinder Termination)

Yes, I.5tsi is ACT

On 09/04/2020 at 12:01, MartiniB said:

does ACT function has migrated to 1.5 TSI?

1.4 were clearly labeled as ACT (Active Cylinder Termination)

 

Active Cylinder Technology, not Termination

17 hours ago, MASKO said:

Active Cylinder Technology, not Termination

yes, i have heard also "** Technology", but definition "**Termination" came earlier

https://de.wikipedia.org/wiki/Zylinderabschaltung

Interesting. What engines uses ACT? 

1 hour ago, MartiniB said:

yes, i have heard also "** Technology", but definition "**Termination" came earlier

https://de.wikipedia.org/wiki/Zylinderabschaltung

 

Yes, "Termination" may well have been the term used, but according to Skoda they now use the term "Technology". Below is an extract from Skoda from one of their technical publications:

 

ŠKODA vehicles fitted with the 1.4 TSI ACT and 1.5 TSI Evo engines (the latter is making its debut in the KAROQ) have been using the automatic cylinder deactivation system since 2015 (ACT stands for Active Cylinder Technology).

@MASKO

i can be wrong

but for me this looks like engineers have developed something and called that by how technology works,
but then came marketing department and decided remove "terminate" because it sounds negative,
instead "technology" sounds much better and at same time doesn't obligate them to anything concrete

22 hours ago, MartiniB said:

yes, i have heard also "** Technology", but definition "**Termination" came earlier

https://de.wikipedia.org/wiki/Zylinderabschaltung

 

I've never heard VW Group ever referring to their engines as Active Cylinder 'Termination'

 

The above link you have posted is Wikipedia     If you use a search engine to lookup "Active Cyclinder Termination", it results in only 3 pages of returns, none of which are attibuted to any of the VW Group brands.

 

Sounds more like an armchair expert decided it was "termination" rather than the manufacturer.

 

In any case -  Terminate? What an odd word to describe what's actually happening. Terminate suggests permanent rather than temporary. 

Edited 12 April, 20206 yr by Guest

On 11/04/2020 at 16:55, numskull said:

Interesting. What engines uses ACT? 

 

I did a little digging before buying our 1.4 TSI Kodiaq.

 

The 1.4 TSI 125PS engine does not have ACT.

 

The 1.4 TSI 150PS engine does have ACT.

 

But, the 1.4 TSI 150PS with both 4x4 and DSG does not get ACT...

 

 

 

The Superb of course may well be different.

 

The 1.5 TSI too.

 

Edited 13 April, 20206 yr by silver1011

Thanks Silver1011. I’d’ve thought the higher capacity engines would be be ripe for this technology too.