Increased range on older models from big update?

[rs38]

does it sound familiar?



https://www.audi-mediacenter.com/en...oftware-update-for-20192020-model-years-14346

Effective immediately, the software features behind this efficiency enhancement are also available for existing vehicles. Among other improvements, the update expands the usable capacity of the high-voltage battery. As a result, the 95 kWh battery in the Audi e-tron 55 quattro1 delivers more net usable power – 86 kWh* capacity therefore translates into increased range.

*before it was 83.6kWh

So Audi did probably the same last year for the E-tron: but they mention to free up some of the net capacity to gain that high increase of 5% (which is less than Porsche promised and most of it is due to battery net increase)

it's important to note that Audi Etron used no PSM in front and rear and has no 2-gearbox.

In addition to the battery capacity, the new software also optimizes the control of the front electric motor. In normal driving mode, the motor attached to the rear axle is responsible for propulsion. For improved efficiency, the front electric motor is now almost completely disconnected and powered off – and only when more power is needed do both motors come into play. This makes it possible to even more effectively exploit the major advantage of the asynchronous motor concept, i.e., currentless operation without electrical drag losses.

Furthermore, the update also improves cooling. The highly flexible thermal management system, which consists of four separate circuits, regulates the temperature of the high-voltage components even more efficiently. Modifying the control system made it possible to reduce the volume flow rates in the coolant circuit, thus reducing energy consumption. The cooling system is the basis for fast DC charging, long battery life, and consistent driving performance, even under high loads.

for me that makes more sense to optimize coasting on an ASM EV than sacrifice the (on paper) optimal cut of the rear axle for Taycan.

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[rs38]

that update is technically based on the changes from MY2020

At the end of 2019 the Audi E-tron models were being upgraded in various ways, including by measures to extend its range. The key points are briefly summarized below and in figure1 (values refer to the WLTP).

The battery's usable State Of Charge (SOC) capacity (usable capacity in %) was increased from 88 % to 91 %. Extensive tests have proved the robustness of the battery system. The increase in usable battery capacity is realized in full compliance with high quality and durability demands.
In low-load driving, the front axle drive of the Audi E-tron is now decoupled fully electrically, meaning the power electronics no longer pulses current into the electric motor. The reduced energy consumption improves the efficiency of the vehicle. This measure could be implemented by means of optimized power electronics functions with no loss of comfort or agility when reconnecting the electric axle.

The reduction in residual braking torques on the wheel brakes and the optimization of the brake disk cleaning function deliver benefits in terms of range.
The highly flexible thermal management has been further optimized. This has made it possible to further reduce both the volume flows in the coolant circuit and the power consumption of the coolant pump.
The range of the Audi E-tron SUV is thus increased by approximately 25 km (6 %), compared to the initial launch. In the Sportback variant, the better drag coefficient additionally provides about 10 km more range in the WLTP.

Etron55 battery is a bit different and nominal bigger than Taycans:

36 modules with 12 cells (each 4 parallel) and 60Ah per cell
compared to
33 modules with 12 cells (each 2 parallel) and 66Ah for the Taycan.

 

[sfr]

That’s strange. Maybe depends on MY?
i have CT4 (MY21), in Range mode front engine is active.

Yes it was a new feature for MY2022 : https://newsroom.porsche.com/en/202...pgrades-range-connectivity-colours-25520.html

 

[B61]

Yes it was a new feature for MY2022 : https://newsroom.porsche.com/en/202...pgrades-range-connectivity-colours-25520.html

When driving 2WD, I’d prefer to keep front engine.

 

[sfr]

When driving 2WD, I’d prefer to keep front engine.

I don't think we have that choice ... ?

 

[Scandinavian]

Coasting is when you don't have your foot on the gas and regen or cruise not enabled - effectively freewheeling. In this scenario either motor is powered down.

Range drive mode until now is always front motor biased unless going downhill.

The tweak thats potentially 'new' is whether the front motor is 100% inactive or not.

This might be different in MY or type of Taycan?? Mine is a 2020 Turbo and if I look in the left tube, it decouples the front motor now. Coasting or driving on a flat road only uses the rear motor in the display. Any acceleration and both motors are engaged.

 

[B61]

This might be different in MY or type of Taycan?? Mine is a 2020 Turbo and if I look in the left tube, it decouples the front motor now. Coasting or driving on a flat road only uses the rear motor in the display. Any acceleration and both motors are engaged.

So, it looks that they were changing that from MY to MY?
MY20: rear
MY21; front
MY22 (or after uPdate0); rear

 

[W1NGE]

This might be different in MY or type of Taycan?? Mine is a 2020 Turbo and if I look in the left tube, it decouples the front motor now. Coasting or driving on a flat road only uses the rear motor in the display. Any acceleration and both motors are engaged.

I'll see what changes when I get the update applied next month. At the end of the day we ought not to care as long as range is maintained or preferably increased.

I can see Range mode being a legacy thing which potentially has no future given the myriad of tweaks made since launch.

It could of course be a new software bug!

 

[Daniel]

When driving 2WD, I’d prefer to keep front engine.

I agree with you, we will see on the winter roads ...
I think some people have raised this issue.
I hope the "user-individual" mode setting will allow to keep personal options.

Back to the range improvement , this complete decoupling of the motors, not only the front one in range and normal mode , and the total cut-off of their power supply will allow some economy.
However this will only be effective if you are using the Cruise mode, very often... and none of the recovery options (except braking of course ...).

I use it a lot , after 5 years of driving Macan this way ; the profile of my usual journeys also lends itself to this use , but it's also a kind of philosophy.

 

[B61]

I can see Range mode being a legacy thing which potentially has no future given the myriad of tweaks made since launch.

Instead of Range, I’d love to have Winter mode.

 

[nickmdp]

I'm still confused over the de-coupling of the front motor for range mode; isn't that the smaller one for us 4S ballers? Would make sense that using the front (as it does now pre-update, got late sept. appointment) would be more efficient. Unless the front motor is of a much less efficient design?

Uninformed guess, but my assumption would be that RWD would have better traction during acceleration. For ICE, you have a couple factors that might cancel that out in that FWD benefits from having the weight of the engine in the front, and not needing to add the weight of a drivetrain to power the rear wheels.

Again, uninformed opinion that might be brutally wrong, but I certainly can't imagine that they'd have implemented this without knowing the impact it would have.

 

[McgR]

That’s strange. Maybe depends on MY?
i have CT4 (MY21), in Range mode front engine is active.

My CT4 was delivered with the colored icons so I think probably I already have the drivertrain optimization.

 

[B61]

My CT4 was delivered with the colored icons so I think probably I already have the drivertrain optimization.

Maybe… what range are you getting with 100% SoC?
and, (overal) average consumption?

 

[Carax]

Had my

Apologies if this has been discussed elsewhere. My 2021 TTS was updated two days ago. I love the responsiveness of the updated PCM and its new looks. My range did not change, however. My understanding was that it would. What have others on the same boat experienced?

Thanks in advance.

My 2021 Cross Tourismo just had update. Full charge just gone up from 240 to 270.
Well pleased although all my personal settings were re set to default.

 

[yucatown]

Had my

My 2021 Cross Tourismo just had update. Full charge just gone up from 240 to 270.
Well pleased although all my personal settings were re set to default.

Dang, that’s awesome. I’ve charged my turbo S once since it was updated and the range did not increase beyond pre-update levels. Anyone else experiencing similar pre and post range levels?

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