Готові списки джерел за темами / Dual Clutch-Transmission (DCT)

Добірка наукової літератури з теми "Dual Clutch-Transmission (DCT)"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Dual Clutch-Transmission (DCT)"

Li, You, and Pei Liu. "Analysis of Dry Dual Clutch Transmission Technology." Applied Mechanics and Materials 184-185 (June 2012): 61–65. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.61.

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Анотація:

Dual clutch transmission (DCT) combines the advantages of AMT and AT. This paper selects a certain type of dry DCT as the study object. The structure and working principle are introduced. A shift dynamic model is established to analyse the five phases of shift process. The oil line diagram of the electro-hydraulic control system is provided, and then the characteristics of the proportional solenoid valves which are critical control components of DCT are studied. The analysis results provide theoretical basis and guidance for the design and development for DCT.

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Sun, Wei, Yu Long Hua, and Guo Qiang Liu. "A Test Study of Wet Dual Clutch Transmission during Vehicle Launch." Advanced Materials Research 490-495 (March 2012): 86–90. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.86.

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Анотація:

This paper focuses on the model and analysis of wet dual clutch transmission (DCT) during vehicle launch. Two evaluation indexes, slipping friction work and degree of jerk, is presented, and a single clutch control strategy is established and has been validated after applied for an experimental vehicle equipped with a wet dual clutch transmission.

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Inalpolat, Murat, Enes Timur Ozdemir, Bahadir Sarikaya, and Hyun Ku Lee. "A multibody dynamic model for predicting operational load spectra of dual clutch transmissions." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 2 (August 1, 2021): 4132–43. http://dx.doi.org/10.3397/in-2021-2609.

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Анотація:

In this paper, a generalized nonlinear time-varying multibody dynamic model of dual clutch transmissions (DCT) is presented. The model consists of clutches, shafts, gears and synchronizers, and can be used to model any DCT architecture. A nonlinear clutch model is used to determine the transmitted power to the transmission at any speed and clutch temperature. The clutch can be a single- or multi-plate clutch and can operate in a wet or dry-clutch configuration. A combined kinematic and powerflow simulation enables calculation of gear, shaft, bearing and clutch quasi-static loads as well as gear mesh frequencies following a duty cycle as the input. For the corresponding Linear-Time-Invariant (LTI) system model, natural frequencies and mode shapes are obtained by solving the eigenvalue problem. The modal summation technique is used to determine the steady state forced vibration response of the system. For the corresponding NTV system, Newmark's time-step marching based integration is used to determine both the steady state and transient forced vibration response of the system. The DCT model is exercised using a common transmission architecture operating at several different operating conditions. The resulting impact of changing operational conditions on gear and bearing loads as well as dynamic transmission error spectra are demonstrated.

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Kong, Hui Fang, Xiu Ping Li, and Wei Bao. "Control of Clutch on DCT during Start Process." Applied Mechanics and Materials 130-134 (October 2011): 357–60. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.357.

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Анотація:

Dual Clutch Transmission (DCT) is a new automatic transmission system, which overcomes the shortcomings of power break when shift of the automatic mechanical transmission (AMT) and not only inherit high transmission efficiency and simple structure of AMT, but also inherit small impact of hydraulic, non-power interruption characteristics of automatic transmission (AT). The core and difficulty is the clutch control in the start process, the control targets are not only to ensure the smoothness of the start process and stable operation of the engine, but also to ensure quickness[1].

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Liu, Zhen Jun, Lei Wang, and Chuan Bing Ren. "Accurate Calculation and Control of Dry Dual-Clutch Torque during Shifting Process." Advanced Materials Research 490-495 (March 2012): 1913–19. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1913.

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Анотація:

Aiming at the work and structural characteristic of dual clutch transmission (DCT), the control of clutch torque is analyzed during shifting process; A system dynamic model has been established; Several key influence factors of clutch transmit torque are raised, and then the accurate formula for each factor is derived respectively; Model and simulation are made up by MATLAB /SIMULINK, and then the clutch torque is analyzed during shifting process for a DCT car. The results indicate that the jerk will be reduced effectively by coordinated control for the changing ratio of clutch torque during shifting process.

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Huang, Jing Ying, Zhen Jun Liu, Wei Sun, and Da Tong Qin. "Thermal Effects Analysis on DCT Driven Plate in Vehicle Initial Condition." Applied Mechanics and Materials 86 (August 2011): 96–99. http://dx.doi.org/10.4028/www.scientific.net/amm.86.96.

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Анотація:

The Dry-type Dual Clutch system is designed for a certain Dual Clutch Transmission (DCT), and transient analysis is performed to investigate the thermal influence on driven plate in sophisticated slip conditions, which is determined by control strategy of DCT. First, a clutch engagement model is developed to obtain transient friction power corresponding to selected control strategy, and the distribution of time-varying heat flux is derived. On that basis, the thermal effects on the driven plate are simulated by finite element method. Finally, the temperature and thermal stress distributions on the frictional surfaces are acquired, which shows that the previously designed clutch system agrees with thermo requirements. This new approach which is more superior to the traditional clutch analysis, can adjust to different control strategies, thus it can be applied to facilitate the thermo analysis and practical design of DCT system.

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Jia, Guo Zhong, Xin Ping Wu, and Zhen Hua Jia. "Dual Clutch Automatic Transmission Two Clutch Starting Control and Simulation." Applied Mechanics and Materials 372 (August 2013): 538–42. http://dx.doi.org/10.4028/www.scientific.net/amm.372.538.

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Анотація:

According to the special structure of DCT, the control strategy of launch with two clutches has been proposed to share the friction work and extend the life of both clutches. The dynamic model of launch with two clutches and the clutch control model have been built. the control strategies of both clutches have been proposed respectively according to the requirement of the different driver intention and the limitation of the impact of vehicle. The simulation model of launch with two clutches has been built using the Matlab/Simulink platform, and the simulation has been carried out. The Simulation results show that the balance of friction work based on this launch strategy with two clutches has been validated.

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Wang, Yin Shu, Xiu Sheng Cheng, Yong Dao Song, and Peng Han. "The Wet Clutch Pressure Control of Dual Clutch Transmission Based on FCMAC." Applied Mechanics and Materials 157-158 (February 2012): 1614–19. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.1614.

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Анотація:

A wet clutch pressure control system of dual clutch transmission was presented in this paper, and clutch pressure intelligent control arithmetic based on FCMAC(Fuzzy Cerebellar Model Articulation Controller) was designed to realize accracy control of clutch pressure. The intelligent control system was verified by experiment, and the rusults showed that the clutch intelligent control algorithm with FCMAC had good adaptive ability and high precision. It could meet the requirements of the clutch peressure contol of DCT.

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Sergienko, Nikolay, Pavel Kalinin, Ivan Pavlenko, Marek Ochowiak, Vitalii Ivanov, Anton Sergienko, Natalia Pavlova, et al. "Synthesis of the Energy-Saving Dry Dual Clutch Control Mechanism." Applied Sciences 13, no. 2 (January 6, 2023): 829. http://dx.doi.org/10.3390/app13020829.

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Анотація:

A promising direction in developing up-to-date transport vehicles is the use of transmissions, an essential element of which is a dual-clutch. Improving functional performance, energy efficiency, and environmental friendliness are relevant and require appropriate research. The object of study is a dry dual-clutch working with a manual transmission with high energy efficiency. In the proposed design scheme, a rotary lever and a movable carriage can change the structural diagram of the force interaction between the pressure spring and the clutch discs. The developed mathematical model of the clutches control mechanism allowed for analyzing the process of controlling the dual-clutch transmissions (DCT) and obtaining functional dependencies between pushing forces in friction pairs and the carriage position. As a result, a method for synthesizing DCT was proposed to ensure the transmission of a given torque. Furthermore, it was determined and numerically proven that the same radial movement of the carriage when switching-on the clutches does not guarantee equal loading for the frictional discs of each clutch. This fact increases the uneven dynamics of torque and disc wear. Overall, the synthesis of the energy-saving dry dual-clutch control mechanism providing the same clutch margin for each clutch was developed. The method can be generalized and applied to designing dry dual-clutch transmissions for machines of various purposes.

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Huang, Wei, Jianlong Zhang, Jianfeng Huang, Chengliang Yin, and Lifang Wang. "Optimal Speed Regulation Control of the Hybrid Dual Clutch Transmission Shift Process." World Electric Vehicle Journal 11, no. 1 (January 15, 2020): 11. http://dx.doi.org/10.3390/wevj11010011.

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Анотація:

This paper presents a gear shift method for the dual clutch transmission (DCT) with integrated electric motor in pure electric drive mode. In contrast to clutch-to-clutch shift in conventional DCT, a good gear shifting process relies on the coordinated control of the motor and synchronizer in electric drive mode of the hybrid DCT. To shorten the torque interruption time and reduce the wear of the synchronizer during engagement, the key point is to adjust the oncoming gear speed to the output shaft speed rapidly. This study provides a speed regulation control framework based on model predictive control (MPC) and disturbance observer (DO), where the MPC controller is designed to achieve a good tracking performance and the DO is to eliminate effects from exogenous disturbances. Simulation and experimental results demonstrate that the proposed approach can attain a rapid and robust gear shifting performance.

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Більше джерел

Дисертації з теми "Dual Clutch-Transmission (DCT)"

Gustavsson, Andreas. "Development and Analysis of Synchronization Process Control Algorithms in a Dual Clutch Transmission." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17179.

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Анотація:

The Dual Clutch Transmission (DCT) is a relatively new kind of transmission which shows increased efficiency and comfort compared to manual transmissions. Its construction is much like two parallell manual transmissions, where the gearshifts are controlled automatically. The gear-shift of a manual transmission involves a synchronization process, which synchronizes and locks the input shaft to the output shaft via the desired gear ratio. This process, which means transportation of a synchronizer sleeve, is performed by moving the gear shift lever which is connected to the sleeve. In a DCT, there is no mechanical connection between the gear-shift lever and the sleeve. Hence, an actuator system, controlled by a control system, must be used.

This report includes modelling, control system design and simulation results of a DCT synchronization process. The thesis work is performed at GM Powertrain (GMPT) in Trollhättan. At the time of this thesis, there is no DCT produced by GM, and therefore the results and conclusions rely on simulations. Most of the used system parameters are reasonable values collected from employees at GMPT and manual transmission literature.

The focus of the control design is to achieve a smooth, rather than fast, movement of the synchronizer sleeve. Simulations show that a synchronization process can be performed in less than 400 ms under normal conditions. The biggest problems controlling the sleeve position occur if there is a large amount of drag torque affecting the input shaft. Delay problems also worsen the performance a lot. An attempt to predict the synchronizer sleeve position is made and simulations shows advantages of that.

Some further work is needed before the developed control software can be used on a real DCT. Investigations of sensor noise robustness and the impact of dogging forces are the most important issues to be further investigated. Implementation of additional functionality for handling special conditions are also needed.

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Sandström, Lars-Johan. "Prediction of life durability in friction for wet clutches of DCT gearboxes." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77427.

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Анотація:

Many new cars are equipped with automatic transmissions. These gearboxes often have a dual clutch transmission (DCT) that has a built-in wet clutch. The lubricants used in these gearboxes is often very advanced because it must take care of two systems, the wet clutch and the gears. There is always a strive to make the drain intervals longer. To do this a fundamental understanding of the aging mechanisms inside a DCT must be understood. This project focuses at the aging of the lubricant and friction material inside the wet clutch. A test rig at Luleå University of Technology is redesigned to be able to age this kind of systems. The test rig contains a wet clutch from Volvo Construction Equipment and the redesign focuses mainly on decreasing the oil sump volume to 6 liter and getting the oil sump to be at 100 °C during the tests. To verify the test rig a test is done that are trying to mimic a test done on a test rig called ZF GK3. The same lubricant, friction material and grove pattern are used as in the test with the ZF GK3. Due to the difference in how the test rigs are built all parameters cannot be held the same during the test. At first the same sliding speed at the mean radius, the average power over an engagement and the oil sump temperature is kept the same. A drop in the static friction can then be seen over time. This was however not the expected behavior. The sliding speed is therefore increased which also increases the average power and transferred energy per engagement. This has also big effects on the temperature inside the clutch. A drop in the coefficient of friction can then be seen at 50 % of the sliding speed which also is seen on the test carried out on the ZF GK3. This verifies that the test rig can be used for aging of these kind of systems.The aging that takes place seems to be dependent on the temperature inside the clutch.

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Barr, Matthew Phillip. "Dynamic Modeling, Friction Parameter Estimation, and Control of a Dual Clutch Transmission." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397745325.

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Andersson, Rasmus. "CAE Tool for Evaluation of Park Lock Mechanism in a DCT Transmission." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-62635.

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Анотація:

A park lock mechanism is a device that is fitted to an automatic transmission on a vehicle. The mechanism lock up the transmission so that no rolling of the vehicle can be done when the vehicle is put in the park position. The aim of this thesis is to develop a method in order the evaluate designs on a Park Lock Mechanism (PLM) that can be found in a dual clutch transmission (DCT). A Computer Aided Engineering (CAE) tool to calculate the output that is required for an evaluation of a park lock mechanism design will be created. The CAE tool shall calculate static, dynamic, and snap torque on a ratchet wheel in a gradient, with or without a trailer, also the minimum and maximum coefficient of friction between the pawl and cone, pull out force, the maximum amount of rollback, torque needed from the return spring, preload force from actuator spring, and engagement speed. The CAE tool created uses an Excel Visual Basics for Applications (VBA) workbook for all calculations. The tool allows the user to choose different vehicles with the required specification to evaluate the values for that PLM. The CAE tool will save time and cost if lots of different PLM’s are going to be designed. The CAE tool has potential for future work when more calculations can be added that can be in use for the evaluation the PLM. The CAE tool developed by the master thesis student calculates all the required values for evaluation of a PLM design, executed in a fast, efficient, and easy to use program.

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Книги з теми "Dual Clutch-Transmission (DCT)"

Dritev – Drivetrain For Vehicles 2018. VDI Verlag, 2018. http://dx.doi.org/10.51202/9783181023280.

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Die Dritev 2018, ein internationaler VDI Kongress, der es in sich hat: 3 Veranstaltungen an 2 Tagen! Neben der „Drivetrain for Vehicles“ fanden auch noch die „EDrive“ sowie die „Transmission in mobile machines“ statt. … und hier in diesem Band erhalten Sie alle Vorträge und Präsentationen. Inhalt (Auszüge): AT/DCT The all-new 8-speed AT for the Opel Grandland X 1 G. Bednarek, K. Geratz, Opel Automobile GmbH, Rüsselsheim, H. Chariou, Groupe PSA, La Garenne Colombes, France The new BMW automatic transmission – Challenges in development 11 M. Roßhuber, G. Schromm, K. Kranz, BMW AG, München Third Generation of ZF’s 8-speed automatic transmission – Reducing CO2 emissions in the 8HP transmission 23 C. Sibla, A. Donges, F. Jauch, ZF Friedrichshafen AG, Friedrichshafen Enhancement of a dual clutch transmission kit – AUDI S tronic – Version for All-Wheel Drive, Increase of Torque and HV Electrification 33 A. Schmidt, H.-P. Fleischm...

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Частини книг з теми "Dual Clutch-Transmission (DCT)"

"The Study of Dual Clutch Automatic Transmission (DCT) Control System." In International Conference on Electronics, Information and Communication Engineering (EICE 2012), 245–47. ASME Press, 2012. http://dx.doi.org/10.1115/1.859971.paper45.

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Lowis, A. R., and R. Smith. "hofer H8-DCT-850 – High Performance Dual Clutch Transmission for transaxle application." In DRITEV – Drivetrain for Vehicles 2021, 179–90. VDI Verlag, 2021. http://dx.doi.org/10.51202/9783181023815-179.

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Тези доповідей конференцій з теми "Dual Clutch-Transmission (DCT)"

Ye, Sijun. "Research on Dual Clutch Transmission (DCT)." In 2022 International Conference on Urban Planning and Regional Economy（UPRE 2022）. Paris, France: Atlantis Press, 2022. http://dx.doi.org/10.2991/aebmr.k.220502.011.

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Hebbale, Kumaraswamy, Farzad Samie, and Jonathan Kish. "Dry Dual Clutch Transmission (DCT) Thermal Model." In SAE 2015 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2015. http://dx.doi.org/10.4271/2015-01-1144.

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Liu, Jikai, Biao Ma, Heyan Li, Man Chen, and Jianwen Chen. "Downshifting Control Strategy for Dual Clutch Transmission With Single Clutch Slippage." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9793.

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Анотація:

The cooperation mode between the engagement and disengagement clutches for vehicles equipped with Dual Clutch Transmission (DCT) is of vital importance to achieve a smooth gearshift, in particular for the downshift process as its unavoidable power interruption during the inertia phase. Hence, to elevate the performance of DCT downshifting process, an analytical model and experimental validation for the analysis, simulation and control strategy are presented. Optimized pressure profiles applied on two clutches are obtained based on the detailed analysis of downshifting process. Then, according to the analysis results, a novel control strategy that can achieve downshift task with only one clutch slippage is proposed. The system model is established on Matlab/Simulink platform and used to study the variation of output torque and speed in response to different charging pressure profiles and various external loads during downshifting process. Simulation results show that, compared with conventional control strategies, the proposed one can not only avoid the torque hole and power circulation, but shorten the shift time and reduce the friction work. Furthermore, to validate the effectiveness of the control strategy, the bench test equipped with DCT is conducted and the experiment results show a good agreement with the simulation results.

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Razzacki, Syed T., and Jonathan E. Hottenstein. "Synchronizer Design and Development for Dual Clutch Transmission (DCT)." In SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-0114.

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Razzacki, Syed T. "Design Methodology for a Compact Dual Clutch Transmission (DCT)." In SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2009. http://dx.doi.org/10.4271/2009-01-0511.

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He, Dongwei, Guangqiang Wu, Yimin Shi, and Wenbin Yang. "Dynamic Performance Optimization of the Dual Clutch Transmission Based on Genetic Algorithm." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85525.

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Анотація:

Gear shift law is determined, and shifting control logic, clutch pressure control strategy are developed, Simulation models of the continuous up-shift and down-shift process of DCT are established. Comparison of simulation results by the indicators of friction work, friction power and jerk, Influence on shifting performance about clutch pressure rate and circulates pressure are analyzed qualitatively. According to the fitness function of overall performance of shifting quality, the pressure optimal control objectives of DCT are proposed, and based on genetic algorithm for present control method in engagement process of DCT, the parameter optimization is studied.

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Kim, Jeehoon, Seonmi Han, Haram Kim, and Seungman Choi. "A Guide to Handle Dry DCT (Dual Clutch Transmission) Motor." In WCX World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2018. http://dx.doi.org/10.4271/2018-01-0393.

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Roser, Holger, Paul D. Walker, and Nong Zhang. "Robustness Analysis of Two-Speed Electric Vehicles." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64139.

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Анотація:

This paper presents the findings of a theoretical analysis of a two-speed Dual-Clutch Transmission (DCT) for electric vehicle applications. Electric drives incorporating DCTs can offer improved driving economy and range, acceleration and climbing gradeability, with potentially smaller electric motors (EMs). Overall powertrain performance is simulated with different standard driving cycles, including urban, extra-urban, and constant speed driving, and different EM power ratings. Simulation results are compared against equivalent single-speed powertrain, including a conceptual evaluation of powertrain bulk, weight and cost. Despite added complexity of including a DCT, the simulated driving range is increased by shifting the operating region of the electric motor to greater efficiency regions. This is shown to be more predominant during high-speed driving. In addition, satisfactory drive performance can be achieved with smaller EMs, compensating for added transmission bulk, weight and cost. An outline of further areas of two-speed electric drive research and applications conclude this paper.

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Liu, Yonggang, Jiming Wang, Pan Zhao, Dongye Sun, Yang Yang, and Datong Qin. "Research on Driving Style Classification for Shift Schedule of Dual Clutch Transmissions." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97743.

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Анотація:

Abstract As one of the most promising vehicle automatic transmission, the dual clutch transmissions (DCT) have become a research hotspot. In order to formulate different shift schedules of DCT to meet economic and comfort requirements, it is necessary to classify and identify driving styles based on vehicle driving data. Accurate classification of driving style is a prerequisite for effective identification, and in this research, a driving style classification method is built based on feature engineering. First, a specified road test is conducted considering the influence factors, in which the driving data is collected, and the driving style is subjectively evaluated. Subsequently, the information entropy is applied to discretize the velocity and the degree of accelerator pedal degree, where 44 feature quantities are extracted to characterize the driving style. Taking into account strong correlation and redundancy between the constructed feature quantities, the principal component analysis (PCA) is employed to reduce the dimension. Finally, the fuzzy c-means (FCM) clustering algorithm is used to classify the driving style. The successful classification rate can reach 92.16% of the subjective scoring result, and is improved by 9.81% comparing with traditional feature quantities. The results show the effectiveness of the proposed driving style classification method, which lays a foundation for the adaptive control of different driving styles for the establishment of an intelligent DCT control system.

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Zhang, Yunjia, and Dengfang Ruan. "Investigation on the Lubrication Performances and Thermal Characteristics of the Tapered Roller Bearing." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67052.

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Анотація:

In this paper, the tapered roller bearing supported on the output shaft of the dual clutch transmission was studied. During the operating process of the DCT (Dual Clutch Transmission) gearbox, the heat generation of the bearing is very large due to the large operating load and high operating speed, which will easily result in bearing failure, such as pitting and abrasion, so it is necessary to investigate the lubrication performances and thermal characteristics of the tapered roller bearing. The simulation models considering or not considering the roller’s spinning (the rollers rotating on their own axles) were established based on Ansys Fluent software. The influences of the roller’s spinning on the lubrication performances of the bearing were analyzed. Furthermore, the transit heat transfer properties of the bearing were simulated and analyzed. The roller’s spinning and transit heat boundary specification were realized by using UDF (user-defined functions). At the same time, the lubrication performances and heat transfer properties of the bearing with different operating conditions are presented and analyzed.

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