Results 141 to 150 of about 303 (176)

Development of Hydromechanical Transmission (HMT) for Bulldozers

SAE Technical Paper Series, 1994
<div class="htmlview paragraph">Conventional medium to large-sized bulldozers have a powertrain comprised of a manually operated powershift transmission connected in series with a torque converter. There is a growing need, however, for a power train that is more efficient and easy to operate, thereby increasing bulldozer productivity.</div>
Hiroyuki Mitsuya, Keiji Otani, Tsutomu Ishino, Ryouichi Maruyama, Toshiyuki Akasaka   +4 more
openaire   +1 more source

Electronic-control system of hydromechanical transmission

Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257), 2003
By using electronic control systems instead of an ordinary open-loop control systems with mechanical operation and hydraulic servos, the fluctuation of the output speed of a multi-range hydro-mechanical variable transmission (HMT) can be reduced from 17% to 2% (with PID control logic), and to 1.5% (with fuzzy control logic).
null Yuan Shihua, null Hu Jibin, null Wang Ran   +2 more
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Startup and Regeneration Problems in Hydromechanical Transmissions

SAE Technical Paper Series, 1968
<div class="htmlview paragraph">Hydromechanical transmissions employing hydrostatic pumps and motors have high inherent efficiency if the ratio of power transmitted hydraulically to that transmitted mechanically is small. Where significant horsepower is to be transmitted over a wide range of torque multiplication, however, simple input-coupled ...
openaire   +1 more source

Mode Shifting in Hybrid Hydromechanical Transmissions

ASME/BATH 2015 Symposium on Fluid Power and Motion Control, 2015
Demands for low cost sustainable solutions have increased the use of and interest in complex hydromechanical transmissions for heavy off-road vehicles. In transmissions with multiple modes, an important condition is to maintain the tractive force during the mode shifting event.
L. Viktor Larsson, Karl Pettersson, Petter Krus   +2 more
openaire   +1 more source

Design Optimization of Complex Hydromechanical Transmissions

Journal of Mechanical Design, 2013
Demands for higher fuel efficiency for off-highway applications motivate manufacturers to replace existing drive transmissions with more complex, high-efficiency transmissions. Increased intelligence and more advanced architectures are, however, more difficult to design and prototype.
Karl Pettersson, Petter Krus
openaire   +1 more source

The Safety of Mechatronic Control Systems for Hydromechanical Transmissions

SAE Technical Paper Series, 1999
<div class="htmlview paragraph">Modern vehicles have a number of safety systems, main of which are basic control systems - steering and braking systems.</div> <div class="htmlview paragraph">Requirements to these systems, defined by the vehicles design safety, are regulated by the system of the international and national standards and
L. Krasnevski, M. Vysotski, V. Boikov
openaire   +1 more source

Analysis of a Hybrid Multi-Mode Hydromechanical Transmission

SAE Technical Paper Series, 2007
<div class="htmlview paragraph">A multi-mode hybrid hydromechanical transmission (HMT) with infinite variability is designed to meet the power transmission needs of medium duty on- and off-road vehicles. A hydraulic pump-motor assembly provides output speed and torque variability in an input coupled split power configuration.
Doug Fussner, Glenn Wendel, Chris Wray
openaire   +1 more source

A Hydromechanical Transmission Optimized for Automotive Application

SAE Technical Paper Series, 1991
<div class="htmlview paragraph">The application of hydromechanical continuously variable transmission technology to a wide variety of automotive applications is made feasible by a unique design approach. Analysis indicates that the basic design scales readily to accommodate power inputs of under 7.5 KW to over 750 KW. The first prototype has been
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Reduction in Dynamicl of the Hydromechanical Transmission on the Wheeled Chassis

SAE Technical Paper Series, 2015
<div class="section abstract"><div class="htmlview paragraph">The article has represented the results of researching multiple wheeled chassis (MWC) hydromechanical transmission dynamic loading. On the basis of comparing frequencies of dynamic moment resonant fluctuations and frequencies of diesel engine indignation, the hypothesis about ...
Igor Taratorkin, Alexander Taratorkin, Viktor Derzhanskii   +2 more
openaire   +1 more source

Hydromechanical Transmissions as Applied to Mobile Equipment

SAE Technical Paper Series, 1969
<div class="htmlview paragraph">A direct hydrostatic transmission was tested in a grader in 1961 and 1962. Certain difficulties experienced led to the development in 1963 of a novel hydromechanical transmission using the same pump and motor units.
openaire   +1 more source