What do you do when chevy hands you the keys to a 2015 corvette stingray and an open run at. Jan 18, 20 more speeds in an automatic transmission means increased fuel economy, meaning that eight speeds can only be a good thing. The light duty aod4r70 found mainly in half ton or lower applications, and the heavy duty e40d4r100 in the heavy 12 plus all 34 and 1 ton trucks and motorhomes. That was followed by the aa81e, which showed up in the lexus gs 350 201114, lexus is350350c, and lexus is250250c 2014up. The first and most sought after benefit is the increase in fuel efficiency. It is based on the zf 6hp26 transmission and is built under license by the ford motor company at its livonia transmission plant in livonia, michigan. Only zf 8 and 9speed atf can be used in the 8speed transmission. Gear selection is controlled by a shiftbywire system, with no mechanical linkage from the shifter to the outside of the transmission. Zf readying 8speed transmission for commercial trucks. This episode demonstrates the components and operation of the zf 8hp 8speed automatic transmission used in select chrysler, jeep, dodge, hellcat, and other brands of vehicles. Driveline automatic transmissions 8 speed dual clutch transmission 8 speed dual clutch transmission a new gear set concept with two countershafts and one summation shaft was constructed to make the 8dt basic transmission as small and compact as possible. The torque converter and the eight gear steps of zfs 8speed automatic transmission together with the high spread of gear ratios guarantee dynamic properties. This second generation is in volume production since july 2014 in the bmw 520d.
Ive been offroad twice with the new jeep and i will never own a manual for wheelin again last jeep was 78 cj5. The 8 to 7 shift on the highway, with 2957017 mts is seamless. The automatic 8 speed you speak of is the number of forward gears that are in the transmission. Aisin aw has developed a fivespeed automatic transmission 5550sn for front wheel drive fwd vehicles. Aug 20, 2014 2015 chevrolet corvette 8speed automatic first drive. This transmission is the subject of a massive number of lawsuits alleging ford lied in order to sell cars ford knew had defective transmissions. The north american market is about to be populated with vehicles featuring automatic transmissions that have eight separate speeds. The automatic transmission in our new wrangler is the best auto ive ever driven except the porsche pdk. Ram 3500 with 8speed powerline automatic transmission. Zf develops a new eightspeed transmission with the target to increase fuel economy by 6% while retaining the shifting dynamics of the 6hplepelletier gear set system. A front unit multipledisc clutch provided high gear, a front band on the clutch drum provided low gear, and a band on the rear unit internal gear drum provided reverse. Zf says its new eightspeed automatic transmission for hybrid drives has turned the tables on next generation mobility. These and other efforts resulted in achieving one of.
Kia motors has long pushed its technology prowess through its uvo telematics system. I just joined, and i am totally frustrated i too have a 2015 denali with the 6. What is the difference between a four speed automatic. Jul 18, 2014 general motors plans to incorporate eight speed automatic transmissions into some of its 2015 fullsize pickup trucks and suvs, an important upgrade as the industry awaits fords aluminum f150. This allnew design shifts in milliseconds, is similar in size to a 6speed automatic but with fewer parts, and improves fuel economy by 14 percent over 5speed automatic transmissions. Sep 29, 2011 the latest craze amongst manufacturers is the eight speed automatic transmission. Zf announced on wednesday that it has reached an agreement to provide its increasingly widely. The 8hp70 transmission is laid out for engine torques up to 700 nm.
Please always refer to the relevant service literature for uptodate inspection, adjustment and repair instructions. But now, transmission giant zf is bringing eight speeds to. Think about when all they had were 2 and 3 speed transmissions, then they came out with 4 and 5 speed. Zf s 8hp eight speed torque converter automatic transmission. More power and higher efficiency characterize the 4th generation of 8hp transmission. The two versions of chryslers 8 speed automatic transmission are american made and have been holding it down for the past two years, and now theyre being joined with a 3rd made in germany. Zf develops a new eight speed transmission with the target to increase fuel economy by 6% while retaining the shifting dynamics.
The zf 8speed automatic transmission is designed and. Nov 24, 2016 the new 8 speed fwd automatic transmission for general motors adam opel ag. Latest advisory on 20172018 8spd transmission problems. The 845re is a fill for life transmission, requiring no oil changes during normal driving conditions. Though these cars are all different, theres one thing they and many other cars have in common. It doesnt seem like either of those two transmission will ever become manuals.
A simplified version of the cruiseomatic, it combined a torque connector and a compound planetary gear set. The thing that worries me is that it has 4 speed instead of 5 speed which is very common in similar cars here, and for some reasons i cannot go for the manual, and the top spec 7 speed 1. Here are some picture of a transmission leak on a zf 8 speed which is very rare,,we dont see this to offen anymore not like the older transmission where the mechtronic sleeve would leak all the time. The new zf 8hp transmission will, like its 5hp and 6hp predecessors, be used in passenger car applications with longitudinally mounted engines, and rearwheel or allwheel drive configurations.
A one speed transmission would only have one gear ratio, making it pretty useless in a motor vehicle. This list of zf transmissions details those automotive transmissions created by the german zf friedrichshafen ag engineering company there are two fundamental types of motor vehicle transmission. This is reminiscent of the mercedes 5speed wa580a nag1 transmission when mb first brought them out called it lifetime service fluid. The through gear operation going up through the gears is good 1st to 2nd could be a little better but not bad. Aug 27, 2009 american parts supplier borgwarner announced today it will be providing friction materials and plates for the new zf 8 speed automatic transmission 8hp, to be deployed on the 2010 bmw 760i.
We drive hondas 10speed automatic transmission kirk bell november 11, 2015 comment now. The 8hp 8speed automatic transmission has received some improvements in terms of fuel consumption and ride comfort and dynamics. Ford files patent for 11speed transmission autoblog. We carry nzs largest range of genuine eaton transmission parts. Toyotas new 10speed gearbox and engine boost fuel economy. The automatic 8speed transmission transmits more power in comparison to the previous model, but still gets by with the same installation space and does not require more components. This is made possible primarily by using direct shifting valves. An 8speed automatic transmission sends power to all four wheels. May 02, 2007 for the hybridization of the driveline, the automatic 8 speed transmission offers the possibility of implementing both a micro hybrid with a crankshaft starter generator and a full hybrid in the form of a parallel hybrid. Zf develops 8speed automatic transmission for passenger cars.
New 8speed and 10speed automatic transmissions direct. All known hybrid functions can thus be implemented in combination with the new 8 speed automatic transmission. The six forward gears and reverse gear are engaged by three multiplate clutches and two plate brakes. Many of the so called problems can be easily attributable to people not understanding how an 8 spd changes gears compared to a six speed. Zf intelligently designs new generation 8speed automatic. What disadvantages a car with 4speed transmission have. Eightspeed automatic transmission for the new opel insignia. Jun 08, 2017 the difference is just an extra gear nothing else. As an example, the co 2 emissions of a sixcylinder engine with a displacement of 2. Aug 01, 2011 in this feature article vette takes a look at a 2002 chevrolet corvette built by gear vendors with a paddleshifted, semi automatic, eight speed transmission vette magazine. Shortly after cerberus took control of chrysler, rumors of zf eightspeed automatics in the companys cars and trucks started to swirl. This comprehensive automatic transmission kit includes everything to service your 0bk tiptronic 8 speed automatic transmission.
The hydraulic control unit in the current generation of the 8speed automatic transmission requires a volume of 3. By the time we reached 1kmh on the test track, the transmission was only in fifth gear, and the engine was turning only 2,100 rpmagainst a speed several hundred rpm higher with the old six speed automatic. See the end of the page for the second generation and repairs. Borgwarner parts for zf 8speed bmw 760i transmission. Zf 8 speed automatic transmission equipment and tool institute tech day june 2012 chrysler pdf document lets look at the transmission ratios for the hellcat 1st 4. Transmission system is nothing but a mechanism that enables the engine to run the vehicle at different speed for a particular engine speed. The zf 8 speed transmission family has been around for a while, so a lot more information tends to be available for it than for the 9 speed. Together with the extensive knowhow provided by the volkswagen engineers, success has been achieved in adapting the gearbox to the volkswagen technologies increased requirements.
Conventional transmissions use a series of gear ratios to strike a balance between power output and fuel economy. There are a few things worth noting about this engine, beginning with its quietness. Introduction the 6speed automatic gearbox 09g is used in the audi a3 04 and audi tt. This paper describes the gear set concept, the mechanical design and specific functions of this transmission. The 8 gears are much closer than the current 5 and 6 speed transmissions, there for decreasing the strain on the engine and increasing mileage. Grab up chryslers 8 speed automatic transmission and save. It had its debut in the bmw 7 series f01 760li saloon fitted with the v12 engine, and since then each new bmw model in all series down. Zf 8speed automatic transmission got transmissions got.
Second generation of the zf 8speed automatic transmission. I was wondering if anyone had any imput on servicing the 8 speed. For the 8speed automatic transmission, zf set out to design and develop an entirely new gear set concept. The one way clutch is splined to the transmission oil pump cover or stator shaft that does not rotate this provides maximum torque multiplication at coupling speed the stator will spin freely on the overrunning one way clutch at coupling speed, about 10% of engine rpm is lost to. The transmissions oil pump now operates with a reduced pressure, down from 5 to 3. I will only accept an eight or 10speed manual if they. Thanks to its modular design with different launch elements, the new 8speed automatic transmission can be used in the electrified variants phev and mhev as well as a conventional variant in the future. It will, therefore, be no surprise to learn that the 1st application. The 8speed automatic gearbox 0c8 is a further development of the 6speed automatic gearbox 09d from the japanese gearbox company aisin aw co ltd. Toyota 4 speed a43dl automatic transmission with overdrive and lockup clutch 1980 duration.
The 8l90e fits only the gen v lt1, lt4 or lt5 engines. The service manual for 20 has service for severe duty at 60k. The zf 8hp eightspeed this automatic transmission by german parts supplier zf group is found in 25 powertrain arrangements across many car brands, making it one. Ford fusion hev, ford fusion energi phev, ford cmax hev, ford cmax energi phev, lincoln mkz hybrid. The first to be introduced was the aa80e, which appeared in the lexus gs 460 200811, lexus is f 200814, and lexus ls 460 200714. Automatic once placed in drive or any other automatic selector position, it selects the gear ratio dependent on engine speed and. New eightspeed automatic transmission by zf springerlink. Maybe this clandestine centralized transmission rebuild facility is being run by the cia. It can improve fuel economy 11% compared the older 6 speed transmission and up to 14% compared to modern 5 speed transmissions. The zf eightspeed automatic transmission car and driver. Automatic transmission basics linnbenton community. With that in mind, the transmission fluid used in the 8speed family glows under uv light already. The latest engine technologies have helped the auto industry unlock massive gains in responsible performance in recent years, and when deployed in vehicles with 8 speed transmissions, the results have. Shortly after cerberus took control of chrysler, rumors of zf eight speed automatics in the companys cars and trucks started to swirl.
Gm 4speed automatics 700r44l60e4l80e there are two basic gm 4speed automatics. The model range of the 8hp family covers the torque range from 300 nm to nm. So what i had to do was clean the transmission pan and then we spray it with this. It wasnt too long ago that a sixspeed automatic transmission was state of the art. You have to almost stop for it to shift to 2nd, and it wont choose 1st under any. The ratios for the gears are realized by three planetary gear sets. And the 2014 manual recommends the six speed only at 60k, and i have heard they are fill for life, and the zf site has a different mileage interval for severe service only. Whether on full throttle or under only partial acceleration, the gasoline turbo four and nine speed play well together.
This has a great potential to improve the development process for ecus, because it allows to move several development tasks. First, a quick rehash of the basics of gears that were discussed in the last saturation dive, for details please refer to the article on the zf 9 speed. This new 5550sn has been developed with a concept to minimize length and mass increase compared with the current fourspeed automatic transmission, and is one of the most compact fivespeed au. These transmissions have a low first continue reading ford 4speed auto. Traditionally, hybrid transmissions are built by taking an efficient automatic transmission and replacing the torque converter with an electric motor with a higher power density, but not this transmission, with zf designing it for hybridisation from the. Beginning next month, buyers will be able to order the 2017 ford f150 fullsize pickup truck with a new 10 speed automatic transmission. I am planning to purchase a new car and my shortlisted car has 4 speed automatic and 1. Reluctant to shift in either direction, but especially down. The following diagram shows how progression through cbta course affects the learner. Automatic cars are ones that change gear without requiring the driver to depress a clutch pedal and manually select the gear ratio. Chrysler to adopt 8speed zf automatic transmission autoblog. Bmw, audi, lexus, and porsche currently offer octogeared automatic transmissions with traditional torque.
In either case, individual driving pleasure is not diminished because drivers can decide whether they want to use the automatic mode or shift manually using switches or levers. Although the dealership claims that the transmission fluid is a lifetime fill that is not the case. The new zf 8speedautomatic transmission 8hp is not only efficient because of optimized fuel consumption but also flexible because of hybrid and allwheel. A new innovation of the 8hp is the clutch is now fully opened during. Two things come to mind when recalling a testdrive in a ram 3500 pickup equipped with zfs new 8speed powerline automatic transmission.
For the 8 speed automatic transmission, zf set out to design and develop an entirely new gear set concept. Zfs new 8speed automatic transmission to be released in 2022 as a. Audi automatic transmission service kit 0bk, 8speed 007749. The 6r debuted in 2005 in the 2006 model year ford explorer and mercury mountaineer. New zf 8speed automotive transmission aaa magazine. No transmission fluid additives, including leak detection dye, can be used in the 8hp family transmissions. What is the use of an 8speed automatic transmission.
Audi a4, a5 and q5 all get eightspeed transmission for 2011, q5 gets 2. While the new 8hp90 torqueflite transmission is designed for higher torque loads like the 2015 dodge challenger hellcat, the 8hp70 torqueflite transmission. This automatic transmission by german parts supplier zf group is found in 25 powertrain arrangements across many car brands, making it one seriously great eight. Clinton, mo champion oil, a globally recognized industry leader in performance lubricants, additives, chemicals and motor oils for over 58 years, announced today that the champion synthetic globaltrans atf fluid meets or exceeds the specifications for zf 8 and 9 speed transmissions. Gears shift so quickly and smoothly, the only thing youll notice is the movement of the tachometer. For both, various measures were taken to minimize energy loss and heighten transmission efficiency. Ford has filed a patent for an 11 speed automatic transmission and has outlined three ways of making it work.
With the introduction of the zf mytronic 6 6 hp 26 in 2001, the division car driveline technology of the zf friedrichshafen ag has developed and introduced a new 6 speed stepped automatic transmission for passenger cars. Zf begins production of secondgeneration eightspeed. Gm 8 speed transmission problems, they are real lemon law. Zf 6speed automatic transmission for passenger cars. Some of the early units were showing issues and many shops and dealers went to a max of 5060k of those units, as they noticed a lot of graphite friction clutch material showing up in the pans and the.
Champion globaltrans atf fluid recommended for zf eight and. The 8 speed automatic transmission reduces overall fuel consumption by at least 6 % compared to present state of the art 2nd generation zf 6 speed automatic transmissions. The 6r is a six speed automatic transmission for longitudinal engine placement in rearwheel drive vehicles. Gears magazine toyotalexus 8speed transmission is here. Land rover pairs this engine with an eightspeed automatic transmission. Gear tooth surfaces were processed using a new technique for a lower coefficient of friction when the gears engage, and the configuration of the friction material used inside. The zf 8hp eightspeed this automatic transmission by german parts supplier zf group is found in 25 powertrain. Toyota has developed two new automatic transmissionsthe 8speed direct shift8at and the 10speed direct shift10at. Why zfs eightspeed is the best automatic transmission. The light duty 700r44l60e found mainly in half ton and car applications, and the heavy duty 4l80e in the heavier applications. Just as a bike has 1012or even 18 speeds etc this tranny has eight speeds which help to give the car better gas mileage by using more gears to give the engine less of a strain. The fordomatic two speed transmission was introduced in 1959.
The 8 speed in my jlu is the first automatic transmission i have ever loved. The eightspeed transmission is not new to the automotive world. In automated manual transmissions, electromechanical or hydraulic actuators take over the clutch and shift actions. New fivespeed automatic transmission for fwd vehicles. The new kia k900 demonstrates just how savvy this automaker is. The 8 speed transmission everything you need to know. I want to find out what others think of the new 8 speed. The 8hp transmission comes only in longitudinal form for rear or allwheeldrive vehicles, and we prefer it immensely to zf s transverse alternative, a nine speed. Ford last week said the investment part of its 2015 contract with the uaw would result in a fwd transmission with similar components to the 10speed, but declined to provide further details. The 8hp transmission comes only in longitudinal form for rear or allwheeldrive vehicles, and we prefer it immensely to zfs transverse alternative, a ninespeed. The zf 8speed automatic made its debut in the bmw 5 series gran turismo and 760li, and will also appear on the bentley mulsanne and rolls royce ghost models. Whats the automatic 8 speed transmission mean in a car. The highly efficient 8 speed transmission comes with many benefits to the consumer. Chevrolet performance has adapted the productionbased 8l90e eightspeed automatic transmission for use with our lt1, lt4, and lt5 crate engines.