Browse Topic: Transmission linkages

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Contribution of the Mechanical Linkage in Gear Shift Feel of North-South Transmission06-11-01-000810/08/2017
Today’s automotive industry is facing cutthroat competition, especially in passenger vehicle business. Manufacturers around the globe are developing innovative and new products keeping focus on end customer; thus customer's opinion and perception about the product has become a factor of prime importance. Customer touch points such as gear shift lever, clutch, brakes, steering etc. are thus gaining more and more importance. Car companies are trying to induce more and more luxuries in these touch points so that they impress customer and create a positive opinion about the product. On the other hand manufacturers are also trying to manage profits. Companies thus need to find the best fit solution for improvising customer touch points with optimized costs. The performance of these touch points is driven by subsystems of mechanical components like mechanical linkage. Quality, functioning and durability of these mechanical component subsystems play a significant role in performance of touch
Deshmane, Santosh, Gurav, Onkar P., Sahu, Vipul
Journal Article
Engineering Method for Rating Shift Quality93299611/01/1993
It is common for difficult shifting to occur in synchronized transmissions. High shift effort is recognized as a basic performance malfunction that takes place during synchronization. This paper examines shift quality in vehicles with synchronized transmissions. The present study is working on three categories: a mathematical model and computer simulation of transmission shifts, an experimental verification of the model and program, and an engineering method for rating shift quality. The mathematical model in this study is a refinement of a model from an earlier paper [1]. With experience, this model has seen revisions that allow the results to be more accurate than the previous ones. The model takes into considerations many elements that affect the synchronizing process such as: synchronizing torque, inertia of both clutch disc(s) and transmission components, clutch drag, viscous drag in the transmission, shifting RPM's, etc. Furthermore, the model includes parameters of the shift
Szadkowski, Andrew, McNerney, Gerald J.
Technical Paper
Hitch System Comparison — Mechanical, Hydraulic, Electronic84113009/01/1984
Modern agricultural tractors are equipped with a hitch control system. These may be mechanical-hydraulic, hydraulic-hydraulic, or electronic-hydraulic. With the variety of design options open to the tractor manufacturer, it is important to select the system which best fits the manufacturer and end user. This paper presents a comprehensive comparison of each system. Robert Bosch has had many years experience in the design and manufacture of components for hitch systems, and hopes to help designers choose the approach best suited for them.
Hesse, Horst, Schrader, Wolfgang
Technical Paper
Utility Equipment Installation Problems: Weight Distribution84009602/01/1984
Weight distribution problems related to installing utility equipment on trucks can be reduced by considerations from the truck manufacturer's design engineers, more and better engineering from the users, equipment installers, and truck representatives in selecting the specifications, and new and increased communications, Weight distribution problems causing overloaded trucks are serious mistakes resulting in illegal and defective manufacture, liability, voided warranties, and operational problems.
Chappell, N.W.
Technical Paper
Mobile Equipment Efficiency Management with Servo Controlled Medium Duty Hydrostatic Transmissions83127509/12/1983
MEDIUM DUTY MOBILE EQUIPMENT CAN REALIZE PRODUCTIVITY GAINS THROUGH THE APPLICATION OF SERVO CONTROLLED HYDROSTATIC TRANSMISSIONS. TO ACHIEVE THESE GAINS, HYDROSTATIC TRANSMISSIONS FOR MEDIUM DUTY VEHICLES MUST POSSESS DESIGN FEATURES WHICH PROMOTE MANAGEMENT OF DRIVELINE EFFICIENCY. HOWEVER, TO ACHIEVE COMPATIBILITY WITH THE MEDIUM DUTY VEHICLE, THESE TRANSMISSIONS SHOULD BE DESIGNED WITH THE COST, LIFE, AND SIZE GOALS OF MEDIUM DUTY IN MIND. THIS PAPER PROVIDES DEFINITION OF THE MEDIUM DUTY CONCEPT AS IT PERTAINS TO HYDROSTATIC TRANSMISSION APPLICATION AND DESIGN. EXAMPLES OF THE POTENTIAL FOR PRODUCTIVITY ENHANCEMENT THROUGH THE USE OF MEDIUM DUTY HYDROSTATIC TRANSMISSIONS WITH INTEGRATED SERVO CONTROL ARE PRESENTED.
Hull, Walter E., McConeghey, Gary D.
Technical Paper
Electric Controls for Powershift Transmissions68026104/09/1968
In the past twenty years there have been extensive changes in the design concepts of heavy-duty vehicles. For instance, vehicle size has been increased, some vehicles are articulated, and some are multi-powered. These new vehicle designs with their complex geometry and often remotely-located power plants have made the range selection of the Powershift transmission difficult. Mechanical shift control systems have shown certain limitations in controlling the new vehicles and are being replaced with other system types which are controlled by air, hydraulics, or electricity. A new electric shift control system is presented in this paper. This control is easily adaptable to the new vehicle concepts and offers the additional advantages of shift inhibiting and increased transmission durability. Because of its flexibility and built-in safeguards, this system offers many advantages that should lead to its wide acceptance in future vehicle designs.
Black, R. L., Schaefer, R. H.
Technical Paper
The Buick Flight Pitch Dynaflow59005001/01/1959
THE Buick Flight Pitch Dynaflow is unique among automatic transmissions in that it contains no gear shifts. Rather, it employs three turbines, each geared at its own speed ratio to the driven shafts. The transmission contains a 5-element torque converter — an engine-driven pump member, three turbines, and the stator — combined with two planetary gearsets. The total transmission weighs about 200 lb, a result of the extensive use of aluminum. The authors outline in detail the design of the unit and its functioning.
McFarland, Forest, Chapman, Charles S.
Technical Paper
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