Articles About transmissions
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Experts gathered at the 9th CTI Symposium to discuss the challenges of reducing noise, improving energy efficiency and meeting the changing demands of the marketplace
CTI Symposium USA Examines North American Transmission Market Strategies
Compact loaders are employed where large machines have no access or are over dimensioned. New hydrostatic drives from ZF meet the demanding needs of this market.
Oil shear brake technology is the key to quick and reliable test stand development.
The automotive industry is shifting for everyone, bearings manufacturers included. Here's what you need to know to make sure you're shifting with it.
The 8th International CTI Symposium on Automotive Transmissions, HEV and EV Drives took place in Rochester, Michigan from May 12-15. The event kicked off with its popular introductory seminar "Basics and Practice of Automotive Transmissions."
The complete Product News section from the June 2012 issue of Power Transmission Engineering.
During the past 10 years, the PM industry has put a lot of focus on how to make powder metal gears for automotive transmissions a reality. To reach this goal, several hurdles had to be overcome, such as fatigue data generation on gears, verification of calculation methods, production technology, materials development, heat treatment recipes, design development, and cost studies. All of these advancements will be discussed, and a number of vehicles with powder metal gears in their transmissions will be presented. How the transmissions have been redesigned in order to achieve the required stress levels while minimizing weight and inertia, thus increasing efficiency, will also be discussed.
In a research project at the Vienna University of Technology, the KISSsoft design software was used to check a new drivetrain concept and the micro-geometry of the bevel gear stage for a UAV (unmanned aerial vehicle).
Key technical drivers which can be addressed by advanced PM manufacturing technologies are, for example, the need for system downsizing in transmissions and differentials, the need for developing systems with higher power density and the strong NVH (Noise Vibration Harshness) requirements - especially for electrified transmissions or e-axle solutions.
In this study, a finite volume CFD simulation model of a single-stage injection-lubricated test gearbox was applied to investigate its oil flow and no-load power loss. The results provide physically plausible information on the oil supply and its distribution.
The load carrying capacity of gear transmissions depends strongly on design, material and operation conditions. Modern analysis methods, e.g. finite element analysis (FEA), consider the above parameters with more or less sufficient accuracy. Yet it remains an ongoing challenge to account for backlash and manufacturing errors, despite a definite need to do so.
In this paper, the models for different power loss sources in transmissions from literature are applied and compared, which form the two methods - ISO 14179-2 and the joint model to estimate the power losses in a transmission. A 2-speed transmission in an electric vehicle is used as a case study to compare the two methods and validate them with experimental data.
Rolling element bearings are widely used in mechanical transmission to reduce friction between two rotating parts. With the further development of the electrical motor in mechanical industry, REBs operate more and more at high rotational speed. For these applications, REBs power losses can be predominant in mechanical transmissions.
Power Transmission and control companies will be on hand during Hannover Messe 2013 to display the latest technology offerings in key product categories including roller bearings, gear wheels, pumps, motors, transmissions, drive system components, clutches and braking systems.
Power transmission and motion control companies will be on-hand during Hannover Messe 2013 to display the latest technology offerings in key product categories including roller bearings, gears, pumps, motors, transmissions, drive system components, clutches and braking systems.
In recent years the estimation of gearbox power loss is attracting more interest â” especially in the wind turbine and automotive gearbox industry â” but also in industrial gearboxes where heat dissipation is a consideration as well. As new transmissions concepts are being researched to meet both ecological and commercial demands, a quick and reliable estimation of overall efficiency becomes inevitable in designing the optimal gearbox.
The upcoming Transmissions in Vehicles conference, along with our complete technical calendar.
This paper presents a physically grounded calculation method to determine the efficiency of worm gear drives. This computation is based on the Institute of Machine Elements, Gears, and Transmissions (MEGT) tribological simulation, which can determine the local tooth friction coefficients (Ref. 1). With this knowledge other power losses such as the bearings, oil churnings and seals power losses can also be calculated.
News Items About transmissions
1 Iranian Bus Manufacturer Buys 6,000 Voith Transmissions (March 5, 2007)
Iranian citybus manufacturer Shabob Khodro ordered 6,000 DIWA 863.3E transmissions. The entire order will be shipped by the end of 201...
2 Bosch and Getrag Collaborate on Hybride Systems with Dual Clutch Transmissions (April 5, 2006)
GETRAG and Bosch signed a cooperative agreement covering the development and marketing of parallel hybrid systems in conjunction with dua...
3 Hansen Transmissions Invests More than 10 Million Euros in New Test Infrastructure (April 27, 2006)
Hansen Transmissions announced an investment of more than 10 million euros for a 13 megawatt test bench for the dynamic testing of wind t...
4 Voith Delivers 10,000 Transmissions in 2004 (April 16, 2005)
For the first time in the history of Voith's commercial vehicle transmission product group, they have delivered 10,000 DIWA transmis...
5 Thornycroft Acquires Newage Transmissions (February 26, 2005)
Thornycraft Ltd., an automotive and off-highway equipment company, has acquired Newage Transmissions Ltd. Effective immediatly, Newage...
6 New Facilities for Hansen Transmissions (December 12, 2003)
Hansen Transmissions has moved to a new assembly and repair center, located in Verona, VA. According to the company?s press release, ...
7 Hansen Transmissions Establishes Gearbox Facility in India (February 12, 2007)
Hansen Transmissions International announced plans to invest 170 million euros for a wind turbine production plant. The facility will sup...
8 Eaton Announces Bezares PTO for Endurant and Detroit Automated Transmissions (February 4, 2020)
Power management company Eaton recently announced it will expand its mobile power take-off (PTO) portfolio to include two new Bezares PTO...
9 Zero-Max VRT Transmissions Dispense Seed and Fertilizer with Precise Metering Rates (December 1, 2016)
Precise metering rates of seed and fertilizer in agricultural equipment is ensured with the latest model Zero-Max VRT Variable Ratio Tran...
10 Shaun Dean Named New CEO of Hansen Industrial Transmissions (June 2, 2015)
Hansen Industrial Transmissions N.V. recently announced that, in mutual agreement with the Japanese SHI HQ, the cooperation with Opervisi...
11 Parker Acquires PIX Transmissions Ltd. (July 12, 2012)
Parker Hannifin Corporation recently announced that it has acquired the hydraulics manufacturing division of PIX Transmissions Ltd. base...
12 Bibby Transmissions Launches New Website (August 20, 2010)
Bibby Transmissions has launched a new website which provides information on their complete range of industrial and high-performance coup...
13 Ricardo Delivers Transmissions for Japan Super Formula Series (July 26, 2018)
Japan’s Super Formula series – formerly known as Formula Nippon – is the top level of competitive single-seater racing ...