Cool link detailing ZF trannys via April. Interesting that the 5 HP 24 in all non turbo 4.2 Audi
06-23-2003, 11:16 AM
#1
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Cool link detailing ZF trannys via April. Interesting that the 5 HP 24 in all non turbo 4.2 Audi
models must stay within torque limits mandated by the torque converter. Looks like 309.7761019 foot pound-force is the limit for W 260. This would explain why the A6/S6/S8 all have a peak torque spread within 22 foot-lbs while having a HP spread of 60 HP; unless of course it is running the W 280 converter.<ul><li><a href="http://www.sovereign-publications.com/auto-art-2.htm">http://www.sovereign-publications.com/auto-art-2.htm</a</li></ul>
06-23-2003, 11:55 AM
#2
Craggy Old Man
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Too bad they dont reference the 5HP19 as being upgraded to ~308lbs.
The S4 2.7T and A6 2.7T Tips use the 5HP19. According to specs the 5HP19 is about what?? 265lbs??
Maybe I missed the part if they included the upgraded.
Maybe I missed the part if they included the upgraded.
06-23-2003, 12:08 PM
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Interesting - by the drive ratios the RS 6 / W12 use the 5HP24 box, but I thought it could handle
more torque than 520Nm. I'm sure I read that the tuners are saying that the max torque the box will rate to is nearer 600Nm, which would require a 5HP30.
RS 6 drive ratios: 3.571, 2.2, 1.505, 1, 0.804, 4.095(R)
<img src="http://www.sovereign-publications.com/images/Auto/table1.gif">
Curious.
RS 6 drive ratios: 3.571, 2.2, 1.505, 1, 0.804, 4.095(R)
<img src="http://www.sovereign-publications.com/images/Auto/table1.gif">
Curious.
06-23-2003, 12:11 PM
#5
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Maybe they are using the W280 converter in the 5 HP 24 in the RS6 only.
"4.3 Increase of torque capacity
As well as weight reduction on certain transmissions, it is important to increase torque capacity to enable large series transmissions to be replaced by a smaller series. Decisive in this direction is knowledge about customer related duty cycles. Extensive measurements on public roads were evaluated. These showed that current traffic conditions do not allow long periods of full load running, enabling the test times of the high torque range to be significantly reduced. In comparison to the first layout design the 5 HP 19 and 5 HP 24 endures a 17% respectively 25% higher torque. (figure 4)."
Perhaps, they are safe with 25% above 520Nm (383.5323166 foot pound-force) since the table ratings are supposed to be highest sustained load.
As well as weight reduction on certain transmissions, it is important to increase torque capacity to enable large series transmissions to be replaced by a smaller series. Decisive in this direction is knowledge about customer related duty cycles. Extensive measurements on public roads were evaluated. These showed that current traffic conditions do not allow long periods of full load running, enabling the test times of the high torque range to be significantly reduced. In comparison to the first layout design the 5 HP 19 and 5 HP 24 endures a 17% respectively 25% higher torque. (figure 4)."
Perhaps, they are safe with 25% above 520Nm (383.5323166 foot pound-force) since the table ratings are supposed to be highest sustained load.
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06-24-2003, 09:30 AM
#10
Here is what little data I have for '00 and up V8 trannies
Basic tranny type is known internally as 01V and used on engine running ME7 ecus. The A6 4.2 uses a basic engine code of ART. The A8 uses code AKB.
Things tied together via the CAN DRIVE are the engine control module, transmission control module, ABS control module, a/c control head, instrument cluster combo.
These items were new for '00 and used on the A8 and A6 V8 trannies.
New speed data acq and Hall sensor ( part # RPM G182 ). In previous trannies, the speed of the planetary gear train was used to control shift operations ( inductive sensor G182 ). This new sensor detects turbine speed.
New valve body ( no specs given )
Transmission ecu given more capacity and higher power.
Facility for programming the control modules of various vehicle and engine combinations ( currently not in use ).
Additional ATF cooler for high torque engines. Thermostat to cooler opens at 176 F.
Advantages listed are:
Control and adaptation during gearshifts to first and reverse. Reduces engagement jolt from P or N, and when a rolling gearshift into first gear is executed ( the infamous "clunk").
Improved shift quality.
Improved self diagnosis through early detection of slippage.
Things tied together via the CAN DRIVE are the engine control module, transmission control module, ABS control module, a/c control head, instrument cluster combo.
These items were new for '00 and used on the A8 and A6 V8 trannies.
New speed data acq and Hall sensor ( part # RPM G182 ). In previous trannies, the speed of the planetary gear train was used to control shift operations ( inductive sensor G182 ). This new sensor detects turbine speed.
New valve body ( no specs given )
Transmission ecu given more capacity and higher power.
Facility for programming the control modules of various vehicle and engine combinations ( currently not in use ).
Additional ATF cooler for high torque engines. Thermostat to cooler opens at 176 F.
Advantages listed are:
Control and adaptation during gearshifts to first and reverse. Reduces engagement jolt from P or N, and when a rolling gearshift into first gear is executed ( the infamous "clunk").
Improved shift quality.
Improved self diagnosis through early detection of slippage.