Abstract and keywords
Abstract (English):
A computer dynamic model of an automobile transmission with a double dry clutch, created using the "Universal Mechanism" software package, is presented. Work objective is to analyze the possibility of improving double dry clutch efficiency at various controls of compressive forces of clutch plates. The computer model contains 7 bodies: an engine crankshaft, two clutch plates, two gearbox input shafts for odd and even gears, an output shaft, a fly wheel. The simulation of gear shifting shows that pressing a clutch pedal or letting out the clutch simultaneously, cutoff time increment increases the rotational speed justification of the engine shaft and the input shaft of the actual gear, the total work of the friction forces of both clutches and does not affect the maximum value of clutch plates rotary sliding resistance. Frictional energy of the clutch when shifting gears from lower to higher is greater than when shifting gears from higher to lower. Sequential clutch on-off reduces the total frictional energy of both clutches by 1.17...1.31 times compared to simultaneous one. The model allows looking into different gearshift modes with uniform velocity or accelerated vehicle motion, optimize the gearshift strategy.

Keywords:
driveline, dual clutch, computer model, universal mechanism
References

1. Zaitsev, A.R. The technique of determining of the optimal adjustment parameters of a dry frictional dual clutch control system. A.R. Zaitsev, Mekhanizatsija stroitel’stva [Building mechanization], 2013, no. 3, pp. 10-13.

2. Poddubko, S.N. Analytical studies of the gearshift process in drivelines with double clutch., S.N. Poddubko, A.M. Homan, V.V. Shportko, Actual'nie voprosi mashinovedeniya [Actual issues of machine science], 2015, issue 4, pp. 61-65.

3. Nghia Le Van Feedback in Automated Clutch Control Circuit for Truck Start-Up Process., L.V. Ngia. Science and Technique, 2018, vol. 17, no. 5, pp. 421-431. DOI:https://doi.org/10.21122/2227-1031-2018-17-5-421-431

4. Liu, Y. Shift control strategy and experi-mental validation for dry dual clutch trans-missions,Y. Liu, D. Qin, H. Jiang, Y. Zhang // Mechanism and Machine Theory. Vol. 75, 2014. pp. 41-53. DOI:https://doi.org/10.1016/j.mechmachtheory.2014.01.013

5. Zhao, Z. Optimal robust control of shifting process for hybrid electric car with dry dual clutch transmission/Z. Zhao, C. Wu, Y. Yang, H. Chan// J. Mech. Eng. Vol. 52 (18). 2016. pp. 105-117. DOI:https://doi.org/10.3901/JME.2016.18.105

6. Wang, Y. Comprehensive design and opti-mization of an electric vehicle powertrain equipped with a two-speed dual-clutch trans-mission/Y. Wang, E. Lu, H. Lu, N. Zhang and X. Zhou// Advances in Mechanical Engi-neering. 2017. Vol. 9(1), pp. 1-13. DOI:https://doi.org/10.1177/1687814016683144.

7. Zhou, X. Numerical and experimental in-vestigation of drag torque in a two-speed dual clutch transmission/X. Zhou, P. Walker, N. Zhang, B. Zhu, et al.// Mech. Mach. Theory. Vol. 79. 2014. pp. 46-63. DOI:https://doi.org/10.1016/j.mechmachtheory.2014.04.007.

8. Vacca, F. On the Energy Efficiency of Du-al Clutch Transmissions and Automated Ma-nual Transmissions/F. Vacca, S. Pinto, A. Hartavi Karci, P. Gruber, et al.// Energies 10(10):1562, 2017, DOI:https://doi.org/10.3390/en10101562.

9. Shen, Y. General modelling method of power losses in transmission with parameter identification/ Y. Shen, S. Rinderknecht, M. Hoppert// Forsch Ingenieurwes. Vol. 81 (2-3). 2017. pp.117-123. DOI:https://doi.org/10.1007/s10010- 017- 0241-1.

10. Habermehl, C. A modeling method for gear transmission efficiency in transient operating conditions /C. Habermehl, G. Jacobs, S. Neumann// Mechanism and Machine Theory. Vol. 153, November 2020, Article number 103996. DOI:https://doi.org/10.1016/j.mechmachtheory.2020.103996 0094-114X.

11. Data- entry program. User Manual. URL:http://www.universalmechanism.com/download/80/rus/03_um_data_input_program.pdf (accessed: 09/21/2021).

Login or Create
* Forgot password?