DSG - (semi auto)
Discussion
Can anyone tell me exactly how a DSG (semi auto) works.
I assume there is no clutch pedal, but that you have to select the next gear you want and tell it when to change.
Right or wrong ?
The rest of my family are used to full autos and I am not sure anything less would go down well.
(thinking Skoda Superb auto)
I assume there is no clutch pedal, but that you have to select the next gear you want and tell it when to change.
Right or wrong ?
The rest of my family are used to full autos and I am not sure anything less would go down well.
(thinking Skoda Superb auto)
I am sure someone more technically minded can answer much better than me, but speaking from my experience...
You are right in that there is no clutch pedal, but you can leave it in 'D' and it will change up/down automatically; or you can leave it in "S" and it will do likewise, but stay in gear for longer.
Alternatively, you can move the gear lever to the left and then press up and down to change gears when desired, although whilst in D it will sometimes overrun and change for you, particularly when slowing down (I think - I don't often move the gear lever left).
My car has the paddles behind the steering wheel too, and these can be used in either D or S.
When driving sedately, I tend to use the paddles only for engine braking when slowing.
When driving less sedately, I have it in S and use the paddles and it stays in the gear that I select.
My wife has CVT in her car, which suits her car perfectly (Note) but I prefer the DSG as it can be interactive when you want it to be.
I hope this of some help.
You are right in that there is no clutch pedal, but you can leave it in 'D' and it will change up/down automatically; or you can leave it in "S" and it will do likewise, but stay in gear for longer.
Alternatively, you can move the gear lever to the left and then press up and down to change gears when desired, although whilst in D it will sometimes overrun and change for you, particularly when slowing down (I think - I don't often move the gear lever left).
My car has the paddles behind the steering wheel too, and these can be used in either D or S.
When driving sedately, I tend to use the paddles only for engine braking when slowing.
When driving less sedately, I have it in S and use the paddles and it stays in the gear that I select.
My wife has CVT in her car, which suits her car perfectly (Note) but I prefer the DSG as it can be interactive when you want it to be.
I hope this of some help.
WokingWedger said:
Can anyone tell me exactly how a DSG (semi auto) works.
I assume there is no clutch pedal, but that you have to select the next gear you want and tell it when to change.
Right or wrong ?
The rest of my family are used to full autos and I am not sure anything less would go down well.
(thinking Skoda Superb auto)
There's no such thing as a DSG semi auto.I assume there is no clutch pedal, but that you have to select the next gear you want and tell it when to change.
Right or wrong ?
The rest of my family are used to full autos and I am not sure anything less would go down well.
(thinking Skoda Superb auto)
I think you're getting confused by descriptions that you might have seen which suggest it's an automated manual - it is, but as far as the driver is concerned, everything happens automatically. Put it in Drive, press one pedal to go and the other to stop.
The difference between it and conventional autos is that it doesn't have a torque converter, instead relying on electronics to engage and disengage clutches.
Lots of cars have this kind of system now and many drivers probably don't even realise. Some are better than others - indeed Honda used one on the current Jazz for a couple of years before switching back to CVT as their's took too much getting used to.
Sheepshanks said:
Lots of cars have this kind of system now and many drivers probably don't even realise. Some are better than others - indeed Honda used one on the current Jazz for a couple of years before switching back to CVT as their's took too much getting used to.
the honda jazz gearbox was way different to a DSG, it was more like a robotic single clutched manual, i knew someone who had one and you could almost watch the clock tick by as it changed gear.SMB said:
the honda jazz gearbox was way different to a DSG, it was more like a robotic single clutched manual, i knew someone who had one and you could almost watch the clock tick by as it changed gear.
Sure - but if you had to roughly group gearboxes by type you'd put them in the same group as opposed to manuals, conventional autos and CVTs.To all intents and purposes it functions as an automatic gearbox when in 'D'. The devil is in the detail.. In sport mode it will rev match on down changes and rev out to the limiter, you can operate it manually either using the stick (when pushed left into manual mode) in this case it operates like a sequential box with a push forward or back going up or down a gear, as an alternative you can use the wheel mounted paddles to go up or down a gear.
The DSG in my wife's A3 has absolutely faultless logic and is very difficult to wrong foot, once used it would be difficult to go back to a manual, however the DCT box (similar tech) in my BMW is slow footed and downright dumb at times by comparison, the only time it surpasses the DSG is in maximum attack when up shifting where it is downright savage.
Essentially it is an automated manual with two main shafts and dual clutches. One main shaft provides the odd gears, 1,3 and 5, the other provides the even ones, 2,4 and 6. When operating in a gear the next gear up (or down depending on the gearbox firmware logic) is already selected and will be brought into operation by swapping from one clutch to the other, this is a very rapid operation.
Dave
The DSG in my wife's A3 has absolutely faultless logic and is very difficult to wrong foot, once used it would be difficult to go back to a manual, however the DCT box (similar tech) in my BMW is slow footed and downright dumb at times by comparison, the only time it surpasses the DSG is in maximum attack when up shifting where it is downright savage.
Essentially it is an automated manual with two main shafts and dual clutches. One main shaft provides the odd gears, 1,3 and 5, the other provides the even ones, 2,4 and 6. When operating in a gear the next gear up (or down depending on the gearbox firmware logic) is already selected and will be brought into operation by swapping from one clutch to the other, this is a very rapid operation.
Dave
Edited by DVandrews on Tuesday 4th August 20:50
Edited by DVandrews on Tuesday 4th August 20:52
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