7G-Tronic is Mercedes-Benz's trademark name for its seven-speed automatic transmission, starting off with the W7A 700 and W7A 400 (Wandler-7-Gang-Automatik bis 700 oder 400 Nm Eingangsdrehmoment; converter-7-gear-automatic with 516 or 295 ft·lb maximum input torque; type 722.9) as core models.
This fifth-generation transmission was the first seven-speed automatic transmission ever used on a production passenger vehicle.[1] In all applications this transmission is identified as the New Automatic Gearbox Generation Two, or NAG2. It initially debuted in Autumn 2003 on five different eight-cylinder models: the E500, S 430, S 500, CL 500, and SL 500. It also soon became available on many six-cylinder models. Turbocharged V12 engines, four cylinder applications and commercial vehicles continued to use the older Mercedes-Benz 5G-Tronic transmission for many years.
The company claims that the 7G-Tronic is more fuel efficient and has shorter acceleration times and quicker intermediate sprints than the outgoing 5-speed automatic transmission.[1] It has two reverse gear ratios.
The transmission can skip gears when downshifting. It also has a torque converter lock-up on all seven gears, allowing better transmission of torque for improved acceleration. The transmission's casing is made of magnesium alloy, a first for the industry, to save weight.[citation needed] The 7G-Tronic transmission is built at the Mercedes-Benz Stuttgart-Untertuerkheim plant in Germany, the site of Daimler-Benz's original production facility.
About 65 percent of Mercedes-Benz C-Class sedans, wagons, and sport coupes are purchased with automatic transmissions (with that figure rising). However, about 88 percent of Mercedes-Benz E-Class sedans and wagons are purchased with automatic transmissions, and automatic transmissions are standard on the Mercedes-Benz S-Class.
Progress is reflected in 7 forward gears[a] out of 11 main components,[b][3][4][5] compared to 5 forward gears[c] out of 9 main components.[d] This turns out the design as advanced compared to its predecessor but less economical compared to its competitors. It uses no bands nor sprag clutches.[4] It is fully electronic controlled. Torque converter lock-up can operate in all 7 forward gears.[4]
In normal condition it sequentially shift gears, but if required it can skip some gears, that are: 7 to 5, 6 to 2, 5 to 3 and 3 to 1.[4]
For 6 or 8 cylinder gasoline engines and if sport mode is not selected, transmission will start in 2nd gear. Also, if it is an offroad vehicle, if low range is selected, it will start in 2nd gear too.[6]
If emergency mode is activated, like when an electric fault or another critical fault occurs, the 6th gear is selected by default (all solenoids off).[4]
AMG SpeedShift
AMG SpeedShift TCT
The TCT transmission is essentially the 7G-Tronic automatic transmission including "Torque Converter Technology".
Sporty, performance-oriented version with the same gear ratios. First used in 2005 Mercedes-Benz SLK 55 AMG.[7]
In 2007, 7G-Tronic transmission with AMG SPEEDSHIFT was also called '7G-Tronic Sport'.[8]
The MCT transmission is essentially the 7G-Tronic automatic transmission without a torque converter. Instead of a torque converter, it uses a compact wet startup clutch to launch the car from a stop and also supports computer-controlled double-clutching. The MCT (Multi-Clutch Technology) acronym refers to a planetary (automatic) transmission's multiple clutches and bands for each gear.[9]
The MCT is fitted with four drive modes: “C” (Comfort), “S” (Sport), “S+” (Sport plus) and “M” (Manual) and boasts 100 millisecond shifts in "M" and "S+" modes. MCT-equipped cars are also fitted with the new AMG DRIVE UNIT with an innovative Race Start function. The AMG DRIVE UNIT is the central control unit for the AMG SPEEDSHIFT MCT 7-speed sports transmission and all driving dynamics functions. The driver can change gears either using the selector lever or by nudging the steering-wheel shift paddles. The new Race start Function is a launch control system that enables the driver to call on maximum acceleration while ensuring optimum traction of the driven wheels.
It is available on the 2009 SL 63 AMG and E63 AMG, and will be used for the 2011 S 63 AMG and CL 63 AMG, and the 2012 CLS 63 AMG and C 63 AMG.
Compulsory on the 2014 AMG CLS63 and E63 models, as well as their "S--Model" variants. Improved with the release of the 2015 model year, by decreasing the lag time between shifts.
mercedes, benz, tronic, transmission, tronic, mercedes, benz, trademark, name, seven, speed, automatic, transmission, starting, with, wandler, gang, automatik, oder, eingangsdrehmoment, converter, gear, automatic, with, maximum, input, torque, type, core, mode. 7G Tronic is Mercedes Benz s trademark name for its seven speed automatic transmission starting off with the W7A 700 and W7A 400 Wandler 7 Gang Automatik bis 700 oder 400 Nm Eingangsdrehmoment converter 7 gear automatic with 516 or 295 ft lb maximum input torque type 722 9 as core models 7G TronicOverviewManufacturerDaimler AGProduction2003 2020Body and chassisClass7 speed longitudinal automatic transmissionChronologyPredecessorMercedes Benz 5G Tronic transmissionSuccessorMercedes Benz 9G Tronic transmission Contents 1 Abstract 2 Specifications 2 1 Basic concept 2 2 Gear ratios 2 3 Gears functionality 3 AMG SpeedShift 3 1 AMG SpeedShift TCT 3 2 AMG SpeedShift MCT 4 Applications 4 1 Mercedes models 4 1 1 Mercedes C Class 4 1 2 Mercedes E Class 4 1 3 Mercedes S Class 4 1 4 Mercedes SLK Class 4 2 Non Mercedes Benz models 4 2 1 Infiniti 4 2 2 SsangYong Motor 5 See also 6 Notes 7 References 8 External linksAbstract EditThis fifth generation transmission was the first seven speed automatic transmission ever used on a production passenger vehicle 1 In all applications this transmission is identified as the New Automatic Gearbox Generation Two or NAG2 It initially debuted in Autumn 2003 on five different eight cylinder models the E500 S 430 S 500 CL 500 and SL 500 It also soon became available on many six cylinder models Turbocharged V12 engines four cylinder applications and commercial vehicles continued to use the older Mercedes Benz 5G Tronic transmission for many years The company claims that the 7G Tronic is more fuel efficient and has shorter acceleration times and quicker intermediate sprints than the outgoing 5 speed automatic transmission 1 It has two reverse gear ratios The transmission can skip gears when downshifting It also has a torque converter lock up on all seven gears allowing better transmission of torque for improved acceleration The transmission s casing is made of magnesium alloy a first for the industry to save weight citation needed The 7G Tronic transmission is built at the Mercedes Benz Stuttgart Untertuerkheim plant in Germany the site of Daimler Benz s original production facility About 65 percent of Mercedes Benz C Class sedans wagons and sport coupes are purchased with automatic transmissions with that figure rising However about 88 percent of Mercedes Benz E Class sedans and wagons are purchased with automatic transmissions and automatic transmissions are standard on the Mercedes Benz S Class The transmission is currently available on the SsangYong s vehicles like Rexton and Korando Turismo in South Korea Turismo in UK In July 2009 Mercedes Benz announced they are working on a new nine speed automatic 2 Specifications EditBasic concept Edit Progress is reflected in 7 forward gears a out of 11 main components b 3 4 5 compared to 5 forward gears c out of 9 main components d This turns out the design as advanced compared to its predecessor but less economical compared to its competitors It uses no bands nor sprag clutches 4 It is fully electronic controlled Torque converter lock up can operate in all 7 forward gears 4 Gear ratios Edit Gear Teeth and Ratios Planetary Gear Set Teeth Count Total Avg Ravigneaux SimpleModel Type First Delivery Sun 1 1 Ring 1 1 Sun 1 2 Ring 1 2 Sun 2 Ring 2 Sun 3 Ring 3 Brakes Clutches Ratio Span Gear StepGear 1 2 3 4 5 6 7 R 1 R 2W7A ALL 722 9 2003 3 5 42 86 86 110 28 76 46 114 4 3 6 0162 1 3486Ratio 4 3772 2 8586 1 9206 1 3684 1 0000 0 8204 0 7276 3 4157 2 2307Gears functionality Edit In normal condition it sequentially shift gears but if required it can skip some gears that are 7 to 5 6 to 2 5 to 3 and 3 to 1 4 For 6 or 8 cylinder gasoline engines and if sport mode is not selected transmission will start in 2nd gear Also if it is an offroad vehicle if low range is selected it will start in 2nd gear too 6 If emergency mode is activated like when an electric fault or another critical fault occurs the 6th gear is selected by default all solenoids off 4 AMG SpeedShift EditAMG SpeedShift TCT Edit The TCT transmission is essentially the 7G Tronic automatic transmission including Torque Converter Technology Sporty performance oriented version with the same gear ratios First used in 2005 Mercedes Benz SLK 55 AMG 7 In 2007 7G Tronic transmission with AMG SPEEDSHIFT was also called 7G Tronic Sport 8 AMG SpeedShift MCT Edit Mercedes AMG developed the 7 speed MCT Multi Clutch Technology planetary automatic transmission The MCT transmission is essentially the 7G Tronic automatic transmission without a torque converter Instead of a torque converter it uses a compact wet startup clutch to launch the car from a stop and also supports computer controlled double clutching The MCT Multi Clutch Technology acronym refers to a planetary automatic transmission s multiple clutches and bands for each gear 9 The MCT is fitted with four drive modes C Comfort S Sport S Sport plus and M Manual and boasts 100 millisecond shifts in M and S modes MCT equipped cars are also fitted with the new AMG DRIVE UNIT with an innovative Race Start function The AMG DRIVE UNIT is the central control unit for the AMG SPEEDSHIFT MCT 7 speed sports transmission and all driving dynamics functions The driver can change gears either using the selector lever or by nudging the steering wheel shift paddles The new Race start Function is a launch control system that enables the driver to call on maximum acceleration while ensuring optimum traction of the driven wheels It is available on the 2009 SL 63 AMG and E63 AMG and will be used for the 2011 S 63 AMG and CL 63 AMG and the 2012 CLS 63 AMG and C 63 AMG Compulsory on the 2014 AMG CLS63 and E63 models as well as their S Model variants Improved with the release of the 2015 model year by decreasing the lag time between shifts Applications EditMercedes models Edit Mercedes C Class Edit 2011 2014 Mercedes Benz W204 c63AMG c63AMG Black Series 2014 Mercedes Benz W205 c180 Mercedes E Class Edit 2009 2016 Mercedes Benz W212 E200AMG 7G Tronic E63AMG 2009 2013 Mercedes Benz W212 E200AMG 7G Tronic Mercedes S Class Edit 2013 2017 Mercedes Benz W222 all models except Maybach S 500 and Maybach S 500 4MATIC 2017 2020 Mercedes Benz W222 V12 models only Mercedes SLK Class Edit 2011 2015 Mercedes Benz R172Non Mercedes Benz models Edit Infiniti Edit 2014 2019 Infiniti Q50 2 0t M274 DE20 LA 10 2015 2016 Infiniti Q50 2 2d OM651 22 LA 11 2017 2018 Infiniti Q60 2 0t M274 DE20 LA SsangYong Motor Edit 2017 2020 SsangYong Rexton G4 2 2 e XDi turbodiesel See also EditList of Daimler AG transmissionsNotes Edit plus 2 reverse gears 4 planetary gearsets Ravigneaux planetary gearset considered as 2 4 brakes 3 clutches plus 2 reverse gear 3 simple planetary gearsets 3 brakes 3 clutchesReferences Edit a b 7G Tronic Mercedes Benz presents the world s first seven speed automatic transmission for passenger cars PDF DaimlerChrysler press release Archived from the original PDF on 2011 07 06 Retrieved 2011 02 22 19 July 2010 Merc plans nine speed auto Autocar co uk Retrieved 2010 07 20 a b Catalog PDF shop ukrtrans biz Retrieved 2020 01 15 a b c d e Mercedes Benz 722 9 Training Manual PDF a b Mercedes Benz Automatic Transmission 722 9 Technical Training Materials PDF Free Online Archived from the original on 2019 06 28 Retrieved 2019 06 28 Mercedes Benz 722 9 Workshop Tips and Tricks Manual PDF Daimler Global Media Site gt Mercedes Benz Cars gt AMG Archived from the original on 2009 08 04 Retrieved 2009 07 20 The new generation SLK More powerful more economical more intense Daimler Global Media Site gt Mercedes Benz Cars gt Mercedes Benz P Cars gt Roadsters gt SLK Class Archived from the original on 2009 11 10 Retrieved 2009 07 21 New 7 speed AMG SPEEDSHIFT MCT Archived from the original on 2009 01 31 Retrieved 2010 07 29 First view of Mercedes 2 0 turbo in the Infiniti Q50 Infiniti Q50 2 2d Sport vs Mercedes Benz C220 BlueTEC 7G tronic 18 October 2014 External links Edit7g Tronic ECU Repair GermanCarFans 7G Tronic Mercedes Benz presents the world s first seven speed automatic transmission for passenger cars PDF DaimlerChrysler press release Archived from the original PDF on 6 July 2011 Retrieved 14 October 2008 ATT24 GmbH Portal Cars Retrieved from https en wikipedia org w index php title Mercedes Benz 7G Tronic transmission amp oldid 1128708940, wikipedia, wiki, book, books, library,
