Inertia of Motor + ZMS?

Hello,

In the DZR, the entire moment of inertia from the engine to the gearbox input is assumed to be 0.2 kgm².
This seems a bit insufficient to me, especially for the ZMS+ coupling with weights of approximately 15 - 20 kg (according to my research).
OK, the 1.9L TDI couplings have a nominal diameter of 228 or 240 mm, but the entire ZMS (Zentralmotoraufhängung) structure up to the starter tooth ring should probably be a bit larger in the max. Diameter, I estimate it to be around 35 cm?

Does anyone here have other (estimated) data for the total moment of inertia of the engine + ZMS + gearbox input shaft?

I need reliable data to calculate the torque curve from DZR logs, with minimal errors in the raw data, such as rotating masses.

I can provide you with the exact data for the 228 unit from ALH during the week. I still have one, but not here.

Question: What about self-driving cars? Actually, nothing seems to work anymore.

TDI-GTI-4-Motion wrote:

I can provide you with the exact data for a 228 unit from the ALH in the course of the week. I still have one, but not here.

Great

Quote:

Question: What's actually going on with automatic vehicles? It seems like there's nothing happening anymore.

Unless, of course, one could still operate the automatic transmission even in a gear, similar to the 4th gear. Locking the gear ratio of a gearbox, and doing so without any slippage . . .

Quote:

Unless one could disable the automatic transmission despite WOT in a gear similar to the 4th gear of a manual transmission, and do so without converter slip... :roll:Yes, that's clear for a pure automatic transmission without a manual override coupling. So, what I meant was, even in relation to a Tiptronic with a converter override coupling.

I am focusing more on the weight of these components because a converter is significantly heavier than a ZMS unit.

TDI-GTI-4-Motion wrote:

So, ich meine, das bezieht sich bereits auf ein Tiptronic-Getriebe mit einer Wandlerüberbrückungskupplung. I'm focusing more on the weight of these components because a converter is significantly heavier than a ZMS unit.

OK, that creates an additional braking force.
But compared to the total mass of the vehicle, this is certainly not that much, so the torque calculation will not be significantly affected... I'm currently (still) focused on minimizing all possible errors.

Hi, I have a spare wheel from a Sharan 6G. 1.8T 240hp 06A105266H
and one from the Golf 5G. 1.9tdi ASV 225hp 038105264E
Diameter of ZMS = 240mm = 288mm
225er=283mm
Weights: 240 lbs complete, 16.2 kg, only ZMS 11.6 kg
225er complete, 14.3kg, only ZMS, 10.2kg

I don't know exactly how to apply this to the pump-nozzle, but the given dimensions of the parts do impose certain limitations. Means a deviation of a few hundred grams, if at all.
As I see it now, if both cars have equally strong starters, the heavier flywheel will be a reason why my Leon doesn't start as easily as the Ibiza.
/viewtopic.php?t=24396

RedR32 wrote:

Diameter of ZMS = 240mm = 288mm 225er=283mm Weights: 240 lbs complete, 16.2 kg, only ZMS 11.6 kg 225er complete, 14.3kg, only ZMS, 10.2kg

Ah, thank you already
Then, the generally used "small dimensions" (225, 240) for the outer diameter of the clutch disc are likely to apply.

ulf wrote:

Then, it seems that the "standard" dimensions (225, 240) for the outer diameter of the clutch disc will be used.

"Of course, Ulf, that has always been the outer diameter of the clutch disc."

TDI-GTI-4-Motion wrote:

So, it seems the "small dimensions" (225, 240) commonly used for the outer diameter of the clutch disc are likely the standard. ulf wrote: Yeah, Ulf, that's always been the outer diameter of the clutch disc. :wink:What surprised me was that this dimension practically appears on all the important parts of the clutch unit in the document.

As a functional main measure, it's understandable, but if, for example, you wanted to know which clutch bells the parts fit... I know that this isn't the right tool for the job

I am currently compiling the relevant moments of inertia, and I am still missing the crank shaft.

As a rough approximation, I would like to use the simple formula for a full cylinder:
J = 0.5 * m * r²
where I take half the stroke (stroke for the 1.9 TDI: 95.5 mm).

Then I'm still missing the weight of the KW -> Who has ever held a bare 1.9 KW in their hand and can give me some guidance?

ulf wrote:

Then I'm still missing the weight of a KW engine -> Has anyone ever held a bare 1.9L KW engine and can give me some guidance?

I have a V6 TDI engine that I could weigh. Interest?

TDI-GTI-4-Motion wrote:

I have a V6 TDI engine that I could weigh. Interest?

As a benchmark (with estimated 25-30% overweight compared to the 1.9 figure): yes, please