Most of our Qingling Isuzu heavy duty truck chassis use ZF Ecosplit4 transmission and some special operating vehicle chassis use Fast 12JSDX180T. What are the differences between these two models of transmission?
Shaanxi Fast Auto Drive Group was founded in 1968, it is the largest transmission manufacturer in China. It produces and sells 1.2 million automobile transmissions, 50 million gears and 200,000 tons of automobile castings and forgings annually. The products are widely exported to the United States, Japan, Australia, Eastern Europe, South America, Southeast Asia, and the Middle East. It has been ranked among the top 30 in China's auto industry, the top 100 in China's machinery industry, the top 500 in China's manufacturing industry, and the "Double Hundred" of international and domestic auto parts.
Relying on independent innovation and technological progress, Fast has established a scientific and technological research and development system and an independent innovation system as a "national enterprise technology center". Fast developed and launched independently AT, AMT, S transmissions, passenger car transmissions, light transmissions and hydraulic retarders. New products such as speed reducers, clutches, and reducers, as well as intelligent new energy products such as wheel-side reducers and new energy vehicle transmission systems, fully adapt to the energy-saving and emission reduction requirements of the automotive industry, outstanding competitive advantages in brand effect, quality performance, energy saving and environmental protection, etc., providing a steady stream of new and optimized configurations for the upgrading of commercial vehicles. The product is suitable for various models of heavy vehicles, buses, medium and light trucks, engineering vehicles, mining vehicles and low-speed trucks. It has been selected as designated supporting products by thousands of models from more than 150 OEMs at home and abroad, and has a market share. There are more than 10 million units, and the domestic market share exceeds 70%.
ZF Friedrichshafen AG, ZF for short, is a German company. The headquarter is located in Friedrichshafen, Baden-Wurttemberg in southwestern Germany. ZF is Mainly engaged in engineering, well-known for its design, research and development, and manufacturing in the automotive industry. It is a partner and parts supplier of the global automotive industry, specializing in providing automotive parts such as transmission, steering, and chassis systems. The ZF Group's automotive powertrain and chassis technology has a world-leading position. As a multinational company, the ZF Group has 119 branches in 25 countries around the world.
In 1920, the company applied for a patent for the ZF Soden transmission. In 1929, driven by the rapid development of the automobile industry, the company introduced the ZF Aphon transmission for automobiles. Developed automatic transmission for passenger cars in 1961. The ZF 3HP20 transmission is interchangeable with the manual transmission produced by the same company. In the 1960s, ZF provided gearboxes for major German automobile plants such as DKW and BMW, as well as Peugeot and Alfa Romeo. Started mass production of automatic transmissions for commercial vehicles in 1977.
ZF's main products
ZF's products include: automatic transmissions, manual transmissions, chassis components, shock absorbers, electronic suppression systems, gears, hydraulic torque converters, differentials for cars, trucks, and buses Device, shaft, etc.
Technology:
Fast mainly uses Eaton’s dual-intermediate floating shaft technology. The advantages are mature technology, simple processing technology, simple operation and convenient maintenance. The disadvantage is low transmission efficiency. It is currently the largest supporting product in the heavy truck market. Since the double countershaft double-speed combined transmission can significantly reduce the mass and axial size of the transmission, using this advantage can increase the maximum transmission power and torque of the transmission and expand the scope of use.
ZF is a European single-spindle technology. Due to the use of helical gear design, gear grinding technology, active lubrication system, copper card synchronizer, etc., the transmission efficiency is high, but the corresponding processing technology and maintenance requirements are high, the price is high, and the pneumatic servo The device makes the operation easy. The domestic joint venture Qi Gear is a typical representative, and it is the largest domestic passenger car accessory product. Due to its appearance characteristics, many customers also call it horizontal gearboxes.
Main performance of Fast 12JSDX180T
Speed Ratios | |||||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | R1 | R2 |
15.53 | 12.08 | 9.39 | 7.33 | 5.73 | 4.46 | 3.48 | 2.71 | 2.1 | 1.64 | 1.28 | 1 | 14.86 | 3.33 |
Main Performance Parameters
Rated Input Power | Rated Input torque | Oil Capacity | Weight |
331kw | 1800Nm | 16L | 260Kg |
1. The use of all-aluminum alloy shell design reduces the weight of more than 110 kg and improves the fuel economy of the vehicle;
2. The main and auxiliary tanks are combined, and the auxiliary tank adopts a large center distance helical tooth design, which significantly improves the strength and life of the auxiliary tank, and the transmission efficiency High;
3. Double intermediate shafts, power split, unique structure;
4. Full synchronizer, light and flexible gear shifting, the main box is a double-cone lock ring synchronizer, with large synchronization capacity; the auxiliary box is an enhanced lock pin inertia Synchronizer, non-metallic friction material, high reliability;
5. Large first gear speed ratio, strong climbing ability under heavy load;
6. Reasonable gear arrangement, small speed ratio difference, good fuel economy;
7. Fine tooth design, vice Box helical gear design, smooth meshing, low noise;
8. Various forms of power take-off, power take-offs can be configured in all directions.
Innovation by reduction: efficiency, perfected.
With the development of the new 8-speed automatic transmission by ZF, the focus is not on the number of speeds but rather on the minimization of fuel consumption. The new 8HP 8-speed automatic transmission, which was designed to be more lightweight, sets new standards for flexibility, efficiency, and economy. It is an excellent example of how the power of innovation can create a new classic design.
1. New gear set design: four planetary gear sets and only five shift elements minimize the drag loss and increase the transmission efficiency.
2. Optional hydraulic impulse oil storage (HIS) opens up the possibility of the start-stop function and increases the fuel savings potential.
3. Integrated transmission control unit with extremely quick response time.
4. Basic transmission can be combined with multiple power take-up elements including the torque converter, the hybrid drive, and the integrated power take-up element.
5. Full hybrid compatibility: on the basis of the parallel hybrid concept, mild, full and plug-in hybrid systems can be implemented with the basic transmission of the 8-speed automatic transmission.
6. The transmission is compatible with the following all-wheel-drive concepts: All-wheel drive center differential integrated, integrated all-wheel drive system (IAS©), hang-on all-wheel-drive.
7. For input torque range from 300 to 1000 newton meter.
8. Multi-disk separation of brakes.
9. Optimized cooling: less cooling oil for low system pressures, more cooling oil for high system pressures.
10. Automatic idle shift system at vehicle standstill and engaged service break (stand-by control).
Reference:
https://www.zf.com/products/en/cars/products_29289.html
http://www.chinafastgear.com/chanpinzhongxin/chanpinliebiao/zhongkabiansuqi/2017-08-23/249.html
