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Extreme engine braking DSG ??

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1 minute ago, tuningmania said:

To "mikkelvitus" - Please, give me the link for this small gadget for remember the "Start/Stop" button state.

 

There was a link with the youtube clip: https://www.ebay.co.uk/itm/322352078637

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  • To be honest, you shouldn't get that much engine braking from a TDi as there isn't a butterfly on the inlet that can be closed like a petrol engine.   What sort of RPM is the engine getting

  • mikkelvitus
    mikkelvitus

    Thank you very much, i will try that

  • Breezy_Pete
    Breezy_Pete

    I have some doubts that it is the alternator that is causing the harsh engine braking. I just don't think the alternator can harvest kinetic energy fast enough to 'feel' like that, no matter what its

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Just out of interest can one of you guys tell me how the Stop/Start works on a DSG car.

What I'm interested in is what triggers the car to re-start.  Is it removing your foot from the brake pedal or is it placing it on the gas pedal?

 

Before this car I had a Golf with S/S and found it great.  When I can to a stop the engine would stop and I could remove my foot from the brake pedal (hill hold or similar keeping the car stationary), when it was time to go again it was simply a case of touching the gas and the car would start up quickly (petrol) and off you go.

Even better than that if you came to a stop and didn't want the engine to stop you could simply back off the brake pedal in the last few feet and S/S would not operate (but hill-hold would still click in)

And if you wanted a real quick get away you could simply stroke the gas pedal very gently, this would start the engine but not release the hill-hold.

I was hoping the Superb would be the same as I'm hoping to get a later model next.

 

 

39 minutes ago, Gdcobra said:

Just out of interest can one of you guys tell me how the Stop/Start works on a DSG car.

What I'm interested in is what triggers the car to re-start.  Is it removing your foot from the brake pedal or is it placing it on the gas pedal?

 

Before this car I had a Golf with S/S and found it great.  When I can to a stop the engine would stop and I could remove my foot from the brake pedal (hill hold or similar keeping the car stationary), when it was time to go again it was simply a case of touching the gas and the car would start up quickly (petrol) and off you go.

Even better than that if you came to a stop and didn't want the engine to stop you could simply back off the brake pedal in the last few feet and S/S would not operate (but hill-hold would still click in)

And if you wanted a real quick get away you could simply stroke the gas pedal very gently, this would start the engine but not release the hill-hold.

I was hoping the Superb would be the same as I'm hoping to get a later model next.

 

 

BADLY.:biggrin:

To "Gdcobra" - On my "Skoda Superb 2 Face Lift Combi 2014 2.0TDI, 170hp, 6DSG, 4x4", there is no need to touch the acceleration pedal. Only stop touching the brake pedal will start the engine..

@Gdcobra

Later models with 'Autohold' are different in that you do not need your foot on the brake pedal, stop and push it harder and the car stays, if Stop / Start is enabled the car will shut the engine down, you can touch the brake pedal, accelerator or turn the steering a bit and fire up the engine, push the accelerator and off you go. With DSG's this is. 

46 minutes ago, Skoffski said:

@Gdcobra

Later models with 'Autohold' are different in that you do not need your foot on the brake pedal, stop and push it harder and the car stays, if Stop / Start is enabled the car will shut the engine down, you can touch the brake pedal, accelerator or turn the steering a bit and fire up the engine, push the accelerator and off you go. With DSG's this is. 

Aye, that sounds similar. Even better with Adaptive Cruise too, the engine would start automatically when the car ahead pulled away.

Mine does not have the hill start and all I have to do is slowly lift my from the brake and the engine will start before the pedal is released completely, thus you are still able to start without any fear of the car rolling away from you ie. in the reverse direction until you put your foot on the throttle and then off you go.

Thanks guys. Sounds like Superb is similar but depends on having hill/auto hold.  Obviously I'll be giving it a good test before replacing.

Mikkelvitus, are you still having this issue? I have been paying very close attention to mine and I can report that it just does not happen if I'm in D mode, as the car slows down and the DSG down shifts into 2nd gear, the ECU automatically evens out the engine revs so the pace of slowing down remains constant, regardless of if I'm using just the engine braking or a combination of the two. That however is not the case in manual mode, the DSG will still change down automatically as and when the system thinks it can handle 2nd gear safely, when this happens, the car does indeed suddenly decrease much more rapidly then it does in D mode. This is in my opinion down to the ECU not mapping as efficiently in manual mode rather then the regenerative braking, I cannot accept that the rubber V belt is capable of accepting that much torque being applied, that it is capable of transmitting that much braking effect, I'm sure it would just slip on the engine crankshaft pulley.

 

If it was my car I really would take it to the dealers workshop and have them check the ECU and engine management chip to see if it was the original or has a previous  owner had a custom chip installed?  On my car, as soon as my foot comes off the gas pedal, the alternator regulator goes into full on mode and the output voltage shoots straight up to 14.7V, just as it mentions in the attachment you sent me. It then, depending on the battery state of charge, maintains that voltage as the engine idles (assuming the engine does not stop) or if the battery charge level is high, the ECU levels the amount of braking torque the alternator provides by reducing the output voltage  so the car can brought to a dignified smooth stop

Edited by Graham Butcher

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