Analysis of the shift characteristics of an automated manual transmission in the parallel type hybrid drivetrain system of a transit bus

Jo, Han-Sang; Jo, Sung-Tae; Lee, Jang-Moo; Park, Yeong-il

doi:10.1504/ijhvs.2001.001152

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…Based on the small deformation and large damping feature of groupware in HMCVT, the elastic deformation influence of many parts could be ignored when it is modeled [2][3][4][5][6][7]. Because the model mainly used on the research of control system, it requires higher dynamic stability.…”

Section: Multi-range Hmcvt Modelmentioning

confidence: 99%

“…The dynamic equations are as follows: Running system model. Vehicle is simplified as rigid groupware whose lumped mass is m. It is in the state of dynamic balance on the action of driving force F q , tractive force F t , rolling resistance F f , gradient resistance F β and wind resistance F w [3,4]. F q is generated by the reactive force of driving wheel torque T w .…”

Section: Governing Characteristics Model Of Diesel Enginementioning

confidence: 99%

“…The multi-range hydro-mechanical continuously variable transmission (HMCVT) achieves wide range stepless transmission by compounding hydraulic power flow with mechanical power flow. Because HMCVT can drive vehicle with large power, high efficiency and wide range of transmission ratio, it has been used in large power vehicle such as tractor, truck and army vehicle [1][2][3][4]. However, the control of it is complex and difficulty.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Control Simulation for the Multi-Range Hydro-Mechanical CVT

Zhang

Zhou

2014

KEM

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To develop the control system of multi-range hydro-mechanical continuously variable transmission (HMCVT), a model of a multi-range HMCVT is built using the principle of dynamics. According to the characteristic of power split, HMCVT is separated as axes set, variable displacement pump-motor system, clutch set. With wheel tractor as application instance, the whole model of vehicle power train is made, which includes the engine, HMCVT, running system and control system. Based on the theory of Finite State Machine, an automatic control method of speed change and range shift is present, which employs the throttle value, engine speed, range number and transmission ratio as the control parameters. The dynamic characteristic of automatic speed changing and ranges shifting is simulated. The result indicates that the model can correctly represent the dynamic characteristic of HMCVT, the engine can run at the optimal working point, the multi-range HMCVT can shift range steadily and change transmission ratio continuously when the load changes, the circularly shift range is avoided. The model can be used conveniently for the analysis of vehicle dynamic performance and the research of multi-range HMCVT control method.

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Section: Multi-range Hmcvt Modelmentioning

confidence: 99%

Section: Governing Characteristics Model Of Diesel Enginementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling and Control Simulation for the Multi-Range Hydro-Mechanical CVT

Zhang

Zhou

2014

KEM

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“…Shifting control is a typical mechanical device-control problem. Many researches have sought to improve its performances [3]- [5]. GPD is involved in not only vehicle parameters, but also driver's intentions and road environments.…”

Section: Introductionmentioning

confidence: 99%

Knowledge-Based Gear-Position Decision

Qin

Lee

2004

IEEE Trans. Intell. Transport. Syst.

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“…AMT 차량은 클러치 엑추에이 터의 변위제어를 통해 차량의 전달토크를 제어하게 되는데, 클러치 제어를 원활히 하지 못할 경우 언덕발진 같은 고부하 상황에서 주 행이 불가능 하게 되거나 변속 상황에서 변속충격이 발생할 수 있 으며 클러치의 수명 또한 짧아지게 된다. 따라서 AMT차량에서 클 러치 제어가 매우 중요하다 [4][5][6][7] . AMT가 적용된 차량에서 전달토크를 제어하기 위해서는 클러치 엑추에이터의 변위와 클러치 전달토크와의 특성을 알고 있어야 한 다. AMT는 건식클러치가 적용되어있는 경우가 대부분이며 건식 클러치는 다이어프램 스프링과 쿠션스프링의 적용에 의해 변위와 힘의 관계가 비선형으로 나타난다 [8,9] .…”

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Analysis on the Clutch Torque of Automated Manual Transmission Vehicle during Dynamometer Test

Choi¹,

Lim

Oh³

et al. 2015

Journal of the Korean Society of Manufacturing Technology Engin

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Article history:With the rise in oil prices and ongoing concerns about environment, there is an increased amount of interest in automated manual transmission (AMT) vehicles. Torque control in an AMT vehicle is attained by controlling the displacement of the dry-type clutch's actuator. To provide good ride comfort akin to that of an automatic transmission vehicle, the clutch control is vital to an AMT vehicle. In this study, a method of obtaining the clutch torque from a dynamometer test is devised. This method is able to identify the relationship between the displacement of the clutch actuator and the clutch torque. A simulator for estimating the performance of an AMT vehicle is developed using MATLAB Simulink. The results obtained from both the vehicle and simulation exhibit a similar trend.

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Analysis of the shift characteristics of an automated manual transmission in the parallel type hybrid drivetrain system of a transit bus

Cited by 10 publications

References 7 publications

Modeling and Control Simulation for the Multi-Range Hydro-Mechanical CVT

Modeling and Control Simulation for the Multi-Range Hydro-Mechanical CVT

Knowledge-Based Gear-Position Decision

Analysis on the Clutch Torque of Automated Manual Transmission Vehicle during Dynamometer Test

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