Design, Modeling, and Control of a Novel Automotive Transmission Clutch Actuation System

Song, Xingyong; Wu, Chienshin; Sun, Zongxuan

doi:10.1109/tmech.2011.2176499

Cited by 23 publications

(4 citation statements)

References 11 publications

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“…Nevertheless, inappropriate system parameters can generate self-excited vibrations, for instance, Pilot-operating pressure [5,101]. [102][103][104][105][106] Perceived stimuli in hydraulic operation lever with a hydraulic Pilot valve In construction machinery controlled by an operation lever with a hydraulic Pilot valve, it is known that operators manipulate the machine based on subtle operational reaction forces in the operating lever [5]. These articles showed the possibility of developing a novel control lever interface to enhance operational sensing.…”

Section: Pressure Control Units In Heavy Duty Automatic Transmissionmentioning

confidence: 99%

A Review of Pilot-operated Hydraulic Valves – Development, Challenges, and a Comparative Study

Elsaed,

Linjama

2023

TJFP

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Hydraulic systems have been widely used due to their high power-to-weight ratio. Despite the growing instances of being superseded by the electromechanical counterparts at low power levels, the market was incapable of presenting alternatives for large-size applications. Additionally, in recent years, the demand for more significant heavy machinery (Mobile & Industrial) has increased, which led to the necessity of even higher flow and pressure Pilot-operated valves, despite the fact that these valves have several issues. One might think the alternative could be developing a hydraulic system that does not rely on Pilot-operated valves, but after decades of research, these systems could not get close to the performance of Pilot-operated Multistage valves. The paper presents a comprehensive study of the progress accomplished from the year 2016 to early 2022 in hydraulic Pilot-operated valves; they are widely employed among ordinary valves, proportional valves, and state-of-the-art digital hydraulics. Higher efficiency will be a primary factor in the success of the new designs. The academia presented several studies to improve the Pilot valves’ performance, but still, they are limited. There are no dramatic developments, and there are only a few upgrades.

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Section: Pressure Control Units In Heavy Duty Automatic Transmissionmentioning

confidence: 99%

A Review of Pilot-operated Hydraulic Valves – Development, Challenges, and a Comparative Study

Elsaed,

Linjama

2023

TJFP

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“…The torque balance relationship of the engine and the torsional damper is shown in (1). Modeling of the torsional damper can be optionally included, or otherwise the engine torque can directly express the damper output torque…”

Section: A Model Reference Pi Observermentioning

confidence: 99%

“…Digital N OWADAYS, along with the efforts to invent novel transmission systems for various types of vehicles [1]- [5] to improve their performance, the dual clutch transmission (DCT) is emerging as an innovative and useful technology to solve the issues-driving inconvenience or low fuel efficiency-of the conventional manual or automatic transmissions in ground vehicles. This emerging technology has the potential to improve the fuel efficiency, reinforce the gear shift performance, and maintain the convenience of the automatic transmission simultaneously.…”

mentioning

confidence: 99%

Real-Time Estimation of Transmitted Torque on Each Clutch for Ground Vehicles With Dual Clutch Transmission

Choi

2015

IEEE/ASME Trans. Mechatron.

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This paper mainly focuses on the robust separate estimation of transmitted torque on each clutch of the dual clutch transmission-the task that has not yet been accomplished by previously published efforts. In order to estimate the torque on individual clutches, the observer system is composed of a shaft model-based observer, unknown input observers, and a model reference PI observer. The estimations obtained by each subcomponents are processed together to provide online torque estimation of high accuracy. The proposed estimator requires the following information: speed measurements of engine, input shafts, and wheels, and nominal engine torque information obtained as a function of driver inputs and engine speed. These are already available in the current production cars; hence, no further modification or addition to the vehicle hardware is necessary. To validate the effectiveness of the proposed estimator, experiments using an actual vehicle are conducted with various scenarios. With detailed analysis of the results obtained by the experiments, the proposed dual clutch transmission torque estimator is shown to be apt for real car application. 1083-4435

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“…However, the torque phase (H) in the case of upshifts and the torque phase (L) in case of downshifts may be absent [19][20][21]. When the oncoming clutch develops enough torque, the off-going clutch is released, marking the beginning of the inertia phase.…”

Section: Introductionmentioning

confidence: 99%

Optimal shifting control strategy in inertia phase of an automatic transmission for automotive applications

Meng

Tao

Zhang

et al. 2015

Mechanical Systems and Signal Processing

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Design, Modeling, and Control of a Novel Automotive Transmission Clutch Actuation System

Cited by 23 publications

References 11 publications

A Review of Pilot-operated Hydraulic Valves – Development, Challenges, and a Comparative Study

A Review of Pilot-operated Hydraulic Valves – Development, Challenges, and a Comparative Study

Real-Time Estimation of Transmitted Torque on Each Clutch for Ground Vehicles With Dual Clutch Transmission

Optimal shifting control strategy in inertia phase of an automatic transmission for automotive applications

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