Shift dynamics and control of dual-clutch transmissions

Kulkarni, Mukund G.; Shim, Taehyun; Zhang, Yi

doi:10.1016/j.mechmachtheory.2006.03.002

Cited by 302 publications

(134 citation statements)

References 10 publications

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“…To return to the previous speed the vehicle needs to accelerate, which leads a fuel consumption increase. In this paper it is used the transmissions clutch torque model proposed by [14] as can be seen at the Equation (8).…”

Section: Clutch Modelmentioning

confidence: 99%

Vehicle Gear Shifting Co-Simulation to Optimize Performance and Fuel Consumption in the Brazilian Standard Urban Driving Cycle

Eckert¹,

Santiciolli²,

Costa³

et al. 2014

Anais Do XXII Simpósio Internacional De Engenharia Automotiva

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The vehicle longitudinal dynamics is responsible for calculating the vehicle power consumption undergone a specific route, by means of the estimation of the forces acting on the system such as aerodynamic drag, rolling resistance, climbing resistance and the driver behavior. The gear shifting tactics influences the vehicle performance and fuel consumption because it changes the powertrain inertia and the engine speed. The literature presents gear-shifting strategies based on the engine power and torque as well as the fuel economy. The last tactics are difficult to determinate, because they depend on a large number of factors like vehicle speed, available transition ratios, engine efficiency, required acceleration, tire-ground traction limit and engine decoupling during the gear shifting process. This paper shows a study based on the Brazilian standard urban driving cycle NBR6601. As there are many factors involved in the vehicle behavior and also in the vehicle dynamics, it was developed an algorithm to optimize the gear shifting process: it makes a choice of the most adequate tactic for each cycle stretch. The analysis were performed by co-simulation between the multibody dynamics software Adams TM and Matlab/Simulink TM , in which is defined the vehicle power demand.

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Section: Clutch Modelmentioning

confidence: 99%

Vehicle Gear Shifting Co-Simulation to Optimize Performance and Fuel Consumption in the Brazilian Standard Urban Driving Cycle

Eckert¹,

Santiciolli²,

Costa³

et al. 2014

Anais Do XXII Simpósio Internacional De Engenharia Automotiva

View full text Add to dashboard Cite

show abstract

“…Taking the upshift from 1st to 2nd gear as an example, the dynamic characteristics of the shifting process are analyzed [11][12][13]. In the normal driving and shifting process without clutch, there is ω e = ω c = ω t_o · i g (n) .…”

Section: Dynamic Analysis Of Amt Shifting Without Clutchmentioning

confidence: 99%

“…As shown in Figure 3, the target output torque for the engine is determined by the engine map data in the current state. By calculating the throttle opening in the current state and the actual limited throttle opening after a change, the actual engine output torque can be estimated [13,14].…”

Section: Coordinated Torque Control Of the Engine And Motormentioning

confidence: 99%

Dynamic Coordinated Shifting Control of Automated Mechanical Transmissions without a Clutch in a Plug-In Hybrid Electric Vehicle

Liu

Liming

et al. 2012

Energies

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Abstract:On the basis of the shifting process of automated mechanical transmissions (AMTs) for traditional hybrid electric vehicles (HEVs), and by combining the features of electric machines with fast response speed, the dynamic model of the hybrid electric AMT vehicle powertrain is built up, the dynamic characteristics of each phase of shifting process are analyzed, and a control strategy in which torque and speed of the engine and electric machine are coordinatively controlled to achieve AMT shifting control for a plug-in hybrid electric vehicle (PHEV) without clutch is proposed. In the shifting process, the engine and electric machine are well controlled, and the shift jerk and power interruption and restoration time are reduced. Simulation and real car test results show that the proposed control strategy can more efficiently improve the shift quality for PHEVs equipped with AMTs.

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“…However, mainly because of the shear losses in the torque converter, conventional ATs have lower energy efficiency than manual layshaft transmissions [1]. For this reason, in the past decades automated manual transmissions (AMTs) were introduced, to provide automated gearshift capability with the same mechanical layout and efficiency of manual transmissions.…”

Section: Introductionmentioning

confidence: 99%

A novel hybridized automated manual transmission for high performance cars

Vacca

Capilli

Sorniotti

et al. 2018

2018 IEEE 15th International Workshop on Advanced Motion Control (AMC)

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Abstract-Because of the introduction of progressively more restrictive regulations that aim to reduce fuel consumption and CO2 emissions, the automotive industry is focusing its efforts on environmentally friendly passenger cars. In particular, different electrification roadmaps are pursued by the individual car makers, and electrified drivetrain layouts are progressively introduced into the market. This process involves all vehicle segments, including high performance passenger cars. In this context, this study presents a novel hybridized automated manual transmission (HAMT) for cars with high power characteristics. The HAMT includes six gear ratios associated with the internal combustion engine, and two gear ratios associated with an electric motor. The energy efficiency of the HAMT is measured on a drivetrain test rig, and compared with that of an equivalent dual clutch transmission (DCT). Simulation results based on the experimentally measured efficiency maps show the significant energy consumption reduction of the HAMT in its internal combustion engine mode, with respect to the DCT.

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Shift dynamics and control of dual-clutch transmissions

Cited by 302 publications

References 10 publications

Vehicle Gear Shifting Co-Simulation to Optimize Performance and Fuel Consumption in the Brazilian Standard Urban Driving Cycle

Vehicle Gear Shifting Co-Simulation to Optimize Performance and Fuel Consumption in the Brazilian Standard Urban Driving Cycle

Dynamic Coordinated Shifting Control of Automated Mechanical Transmissions without a Clutch in a Plug-In Hybrid Electric Vehicle

A novel hybridized automated manual transmission for high performance cars

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