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Hydromechanical Automatic Transmission [PDF]

open access: yesCommunications, 2009
This contribution describes some tests of hydromechanical infinitely variable transmission (IVT) on a test stand. Further, there is described a truck with installed IVT and tests of this IVT at real conditions. There is also shown a control system of the
Lubos Kucera   +3 more
doaj   +2 more sources

Examining drivers injury severity for manual and automatic transmission vehicles-involved crashes: Random parameter mixed logit model with heterogeneity in means and variances [PDF]

open access: yesHeliyon
The effect of vehicle transmission type on driver injury severities have not been thoroughly studied. The study used four-year historical crash data that occurred between the year 2019 and 2022 in Ghana. The data shows 1856 and 2272 crashes for automatic
Charles Atombo
doaj   +2 more sources

Vibration Diagnostic Methods of Automatic Transmission Service Requirement Prediction

open access: yesInfrastructures, 2023
Automatic transmission is a key factor for autonomous driving. The transmission condition is highly affected by the quality and quantity of transmission oil in the system.
Péter Őri   +5 more
doaj   +1 more source

Influence of a New Type of Two-Speed Planetary Gear Automatic Transmission on the Performance of Battery Electric Vehicles

open access: yesEnergies, 2022
This paper introduces a new two-speed planetary gear automatic transmission using an electronically controlled wedge clutch. In order to verify the feasibility of using this transmission in pure electric vehicles, the influencing factors of the two-speed
Wei Zhang, Jue Yang, Wenming Zhang
doaj   +1 more source

Fine Detection and Analysis of Hidden Karst in Wellsite with Quasi-Three-Dimensional TDEM Based on Lateral Constraint

open access: yesGeofluids, 2023
Considering that karst caves, underground rivers, and dissolution fractures in shallow carbonate formation in the Sichuan Basin are extremely developed, leakage, failure and plugging difficulties are easy to occur in the drilling process.
Bin Wu   +8 more
doaj   +1 more source

Static Model-Based Optimization and Multi-Input Optimal Control of Automatic Transmission Upshift during Inertia Phase

open access: yesVehicles, 2023
Step-ratio automatic transmission upshift performance can be improved by modulating the off-going (OFG) clutch during the inertia phase. In this paper, a static powertrain performance model is derived and applied for the purpose of numerically efficient,
Ivan Cvok   +5 more
doaj   +1 more source

Noise Reduction of Two-Speed Automatic Transmission for Pure Electric Vehicles

open access: yesVehicles, 2023
At present, the noise of pure electric vehicles is a research hotspot, especially the noise of automatic transmission. In order to reduce the noise problem in the test, this paper proposes a method to optimize the local structure of the gearbox housing ...
Zhaoyao Shi   +4 more
doaj   +1 more source

Shift Strategy Optimization for Automatic Transmission of Heavy Trucks Based on Dynamic Programming Algorithm

open access: yesApplied Sciences, 2021
The shift strategy of automatic transmission plays a vital role in the smoothness and economy of heavy-duty mining trucks. In this paper, an engine fuel consumption model, a 6 + 2 speed automatic transmission model, and a vehicle resistance model are ...
Heng Zhang   +3 more
doaj   +1 more source

Automatic Transmissions. Complex of Algorithms of “Clutch-to-Clutch Shifts” Technology: Analysis of Architecture, Generalized Structure, Development. Part 2

open access: yesМеханика машин, механизмов и материалов, 2021
The article continues the series of the author publications, which considers the main provisions of the “Clutch-to-Clutch Shifts” (CTC) technology — technology for automatic controlling the switching of automatic transmission (AT) stages, used in the ...
Leonid G. Krasnevskiy
doaj   +1 more source

A study on torsional vibration suppression using centrifugal pendulum vibration absorber with slider-crank chain

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In recent years, high-power and low-cylinder engines are widely used. These engines produce a strong torsional vibration due to engine combustion in the powertrain. In automatic transmissions, a lock-up clutch which connects the engine and the gear train
Takahiro RYU   +3 more
doaj   +1 more source

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