| 제목 |
압력제어 방식 금속 벨트 CVT 변속특성 해석 |
| 분야 |
차량동역학 및 제어 |
| 언어 |
Korean |
| 저자 |
김현수(성균관대학교), 최득환(계명대학교) |
| Key Words |
CVT(무단변속기), Ratio control valve(변속비 제어 밸브), Pressure regulating type(압력제어 방식), Shift dynamics(변속 동역학) |
| 초록 |
In this paper. a primary pressure regulating type ratio control system is developed for a metal belt CYT, and the CYT ratio changing characteristics are investigated by simulation and experiment. The hydraulic pan of the ratio control system has a simple structure with one 3-way spool valve as a main ratio control valve and one bleed type variable force solenoid as a pilot valve. The mathematical modelling of the CYT hydraulic system is derived by considering the CYT shin dynamics. Simulation results of CYT speed ratio and the primary pressure agree with the experimental results demonstrating the validity of the dynamic models. It is found from the simulation and experimental results that the response time of speed ratio and primary pressure can be shortened by increasing the ratio control valve port area, and the size of feedback orifice of ratio control valve gives a damping effect on the primary pressure oscillation. |
| 원문(PDF) |
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