Maserati Quattroporte Masermatic (Topic Ufficiale)

[Autodelta85]

Non ci vuole tanto...io quel cambio ce l'ho, ci ho fatto 70000 km sulla A6 3.0 Tdi e posso dire che é riuscito, soprattutto dopo averlo comparato con la concorrenza. Non é sportivo, però fa bene il suo lavoro. Per gli americani sulla 4porte andrà benissimo.

[JOKEJOE]

J il termine MASERMATIC te lo sei inventato te...?

Jokejoe

[Guest Riccardo]

http://www.autopareri.com/forum/showthread.php?t=21117&page=5

Capito?

Capito, sai non leggo tutti i post e le idee di alcuni qui sono note e notoriamente di parte a prescindere !! )

OK e comunque sono daccordo con te sul ZF che ho anch'io sulla mia S-Type. Non sara da sportiva in assoluto ma su una ammiraglia IMHO e' perfetto anche per i non americani!!!

Per altro, se non mi sbaglio, anche la nuova XK ed XKR monta lo stesso cambio ed ha ricevuto una valanga di apprezzamenti

[j]

J il termine MASERMATIC te lo sei inventato te...?

Jokejoe

no...autoblog.com

[Wilhem275]

Capito, sai non leggo tutti i post e le idee di alcuni qui sono note e notoriamente di parte a prescindere !! )

OK e comunque sono daccordo con te sul ZF che ho anch'io sulla mia S-Type. Non sara da sportiva in assoluto ma su una ammiraglia IMHO e' perfetto anche per i non americani!!!

Per altro, se non mi sbaglio, anche la nuova XK ed XKR monta lo stesso cambio ed ha ricevuto una valanga di apprezzamenti

Toh, stasera ho scoperto che Poppy, Riccardo ed io siamo fratelli "di cambio"

Confermo anche io che per quello che deve fare lo farà benone... e poi, voglio dire, l'edizione Maserati sarà senza dubbio più adeguata alla sportività "confortevole" rispetto alla confortevolezza assoluta del mio naftone Audi

[davbs]

io l'avrei chiamata Maseratic... è più veloce e immediato

[J-Gian]

Contrariamente a quanto mi ero convinto, temo proprio l'abbiano piazzato davanti.

Solo così si spiega il cambiamento della distribuzione dei pesi che tutto sommato prevale ancora sul posteriore

Anche perché se il cambio è questo, non vedo come possano montarlo dietro...

May 17, 2000 ZF Presents the First 6-speed Automatic Transmission

Text and Photos by Neil McGarry

The Car Transmission Division of ZF has released information about the first 6-speed automatic transmission. The 6 HP 26 is rated for torque capacity up to 444 lb./ft. It is smaller and lighter than it's 5-speed automatic predecessor (the 5 HP 24) which is currently fitted to the S4 and A6 2.7T. This transmission is the cornerstone of a new range which will replace today's 5-speed generation and will be manufactured at ZF Getriebe GmbH, Saarbrücken. ZF has been producing 5-speed transmissions since 1990. Presently they make up 80 percent of ZF's automatic transmission production for passenger cars.

With its new and innovative automatic transmission generation, ZF has obtained the best ratings in all major evaluation criteria of transmissions:

Higher Torque capacity

Reduced length

Reduced weight

Less fuel consumption

Better acceleration The sixth gear

In the 90s a major design goal of vehicle and engine developers was to further reduce fuel consumption.

ZF is now counting on an extra sixth gear. Using the Lepelletier gear set concept, ZF has succeeded in making this 6th gear come true with less technical complexity than used in previous 5-speed automatic transmissions. The transmission has improved efficiency and ratio spread, along with an improved power/weight ratio.

Looking inside the new six-speed transmissions, you will find space-saving planet gear sets for combined action during shifts via a highly efficient control logic of the shift elements. The new concept allows a reduced weight of the transmission by about 13% and a substantial raise in torque capacity.

Torque converter with novel actuation

In automatic transmissions the torque converter is mainly used to move off the line. Part of the new electronic control system for the transmission is the Stand-by Control /SBC. Instead of having the converter running against the engine with the vehicle standing still (foot on the brake pedal), as was previously the case, the converter is now disconnected from the powertrain so that there is only minimal residual load. This further reduces fuel consumption.

Low fuel use and sporty acceleration

The ratio spread of the new six-speed has been designed in such a manner that in the "long" range, there is an extra gear which lowers internal speeds and simultaneously reduces noise and fuel consumption.

ZF has designed the smallest gear in such a way that it is even more powerful and permits better acceleration parameters than the previous five-speed transmissions.

The Mechatronic module

The transmission is controlled by a mechatronics module, a hydraulic shift unit combined with an integrated electronics module. Both electronic and hydraulic systems are found in the transmission housing and they are specifically geared to each other. In this way, signals and pressures can be realized with the lowest-possible tolerances and gearshifts can be performed even more precisely. This means optimized shift quality and better drive comfort. Use of the mechatronic module not only markedly simplifies logistics and assembly, it provides a number of other benefits. These include weight reductions, as well as raised reliability resulting from a reduction in the number of plugged contacts and fewer interfaces.

Transmission control

The electronic transmission control system is based on the newly developed Adaptive ShIft Strategy /ASIS.

The electronic system is constantly fed with data on the condition of the transmission, operating condition, operator behavior and operator requests. Comprehensive evaluation of these sensor signals permits complex functional structures of the control system. As a result it can react to spontaneous driver action or sudden topographical changes and immediately transmit the optimized shifting points to the attached hydraulic shift unit. In this process, the control system covers innumerable variations of driving style, from very sporty to very economical, derived from the incoming signals.

Practically unnoticed by the driver, the electronic system also adjusts its drive strategies to special conditions, such a city traffic and different load conditions.

Model range

ZF is planning to offer a 6-speed range for various drive solutions with torque ranges from 222 to 555 lb./ft.

Unlike the predecessor, the 6 HP 26 boasts an expanded ratio spread of 6.04. On top of that, the transmission is 50mm shorter and about 13% lighter than the 5 HP 24. Its acceleration values were increased by 1-5% and fuel consumption was lowered by 5-7%. The 6 HP 26 transmits a maximum input torque of 444 lb./ft.

6-speed Tiptronics

Although neither ZF or Audi would confirm the new 6-speed transmission in a specific model range, the new transmission will replace the current 5 HP 24 on the assembly line at ZF sometime in 2001.

http://www.audiworld.com/news/00/zf/content.shtml

[__P]

Quindi Tp normale...

Vabbè dai tanto sarà in alternativa al duo select...

Una cosa mi fa pensare però... la futura 941 sara transaxle solo con i manuali? Sempre che ci siano...

[J-Gian]

Una cosa mi fa pensare però... la futura 941 sara transaxle solo con i manuali? Sempre che ci siano...

Probabilmente sarà la stessa situazione della Maserati: transaxle per il sequenziale, anteriore per l'automatico.

Comunque ripeto: se la distribuzione dei pesi dovesse restare sbilanciata al posteriore (49 - 51 per l'automatica), sarebbe comunque un risultato niente male.

Anche perché l'unica finalità del transaxle è consentire una migliore distribuzione delle masse, se ci si riesce senza, bene comunque...

[Coaster]

no, credo di no...non credo che lascino perdere il robotizzato, sarebbero dei folli, data l'assoluto valore di quel cambio. secondo me l'automatico classico sarà un'opzione, o addirittura lo standard in mercati come l'america. poi ci sarà da vedere come sarà accolta dal pubblico e che plus effettivo darà rispetto alla soluzione attuale..