Study on vibration suppression method of vehicle with engine start-stop and automatic start-stop

Wang, Daoyong; Jiang, Min; He, Kuanfang; Li, Xuejun; Li, Fajing

doi:10.1016/j.ymssp.2020.106783

Cited by 17 publications

(8 citation statements)

References 14 publications

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“…al. [18] presented three methods to isolate the vibrations of a vehicle during engine startstop operation. All three methods concluded that increasing mounting damping coefficient is more efficient to reduce these vibrations.…”

Section: Highlights Abstractmentioning

confidence: 99%

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Albaghdadi¹,

Baharom²,

Sulaimana³

2022

Eksploatacja i Niezawodność – Maintenance and Reliability

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This study aims to present mathematical modelling to evaluate and analyze double crankrocker engine performance. The study suggests the use of two methods to reduce system vibration through balancing optimization and vibrational analysis. The combination of both methods acts as a verification method; besides it can be used as a tool for further system design enhancement and condition monitoring. The derived mathematical model is then used for balancing optimization to identify system shaking forces and moments, while variable speed is considered as an added parameter to evolve the optimization process. This factor shows better enhancement in reducing system shaking forces and moments compared to constant speed balancing method. Next, the system characteristics were concluded in terms of mode shapes and natural frequencies using modal and frequency response analysis, which give clear clue for secure system operational ground. Finally, the reduction in system vibrations was translated into engine’s centre of mass velocity, which evaluates balancing process effectiveness and indicate if further enhancement should be conducted.

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Section: Highlights Abstractmentioning

confidence: 99%

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Albaghdadi¹,

Baharom²,

Sulaimana³

2022

Eksploatacja i Niezawodność – Maintenance and Reliability

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“…The installation position of the semi-active HDS is determined according to design method of the PMS. 23 The optimized dynamic characteristic parameters of the semi-active HDS in the process of in-situ shift 24 are taken to analyze the vehicle dynamic response when vehicle is in the process of in-situ shift quickly. Figure 6.…”

Section: Solution Analysismentioning

confidence: 99%

Effect of semi-active HDS on vehicle longitudinal vibration and shock in the process of in-situ shift with different shift time

Wang

Zhang

Jiang

et al. 2021

Advances in Mechanical Engineering

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In order to reduce the oil consumption, the vehicle in the process of in-situ shift should be quick enough, but the vibration and shock of the vehicle will be deteriorate. Then the effect of a novel semi-active hydraulic damping strut (HDS) on vehicle shock and vibration in the process of in-situ shift quickly in this study is analyzed. Firstly, the shift shock is analyzed from the driver system, and the powertrain mounting system (PMS) is regarded as the object to be optimized in this study. Then the 13 degree of freedoms (DOFs) vehicle dynamic model (VDM) with semi-active HDS is presented in this paper. The excitation force in the process of quick in-situ shift is identified, and the evaluation indexes (EIs) are reduced with semi-active HDS introduced. Finally, the experiments are carried out to validate the effect of the semi-active HDS on vehicle longitudinal vibration and shock in the process of quick in-situ shift, and the results show that the acceleration of the seat rail and steering wheel are reduced to a great extent. Different shift time is discussed and the results show that we can reduce the shift time to save the oil with semi-active HDS introduced.

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“…A fast mode transition process is needed to meet the requirements of maneuverability. The automatic start-stop system 6 can avoid engine running under idling speed to reduce fuel consumption and exhaust gas emission. In NEDC driving cycle, the start-stop system can reduce fuel by 3.5%–4.5%.…”

Section: Introductionmentioning

confidence: 99%

Optimal starting control strategy of compound power-split system based on dynamic programing algorithm

Wang

Zhang

2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Hybrid electric vehicle has the advantages of internal combustion engine vehicle and pure electric vehicle. The mode transition from EV (electric vehicle) mode to HEV (hybrid electric vehicle) mode requires frequent engine starting. The engine ripple torque (ERT) at low speed will affect the stable operation of the output shaft and has a significant impact on ride comfort. In order to improve the effect of mode transition process, the distribution of motor torque is optimized. The engine ripple torque model is established by combining theoretical formula with experimental data. The dynamic torque of the compound power-split model is decoupled. The mode transition process from EV mode to HEV mode is analyzed. Aiming at power, ride comfort and economy, the optimal starting control strategy of engine is designed based on dynamic programing algorithm. The influence factors of starting process are studied. When the optimization grid of motor torque is 5, the best trade-off between optimization accuracy and calculation cost is obtained. The results show that, the best ride comfort is obtained by using the dynamic programing algorithm when the speed is 30 km·h−1 and the load torque is −178 N·m. The starting effect is the best when the initial crank angle is 0° while the transient response time is 0.84 s, compared with the initial crank angle of 90°, the economy is improved by 21%.

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Study on vibration suppression method of vehicle with engine start-stop and automatic start-stop

Cited by 17 publications

References 14 publications

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Effect of semi-active HDS on vehicle longitudinal vibration and shock in the process of in-situ shift with different shift time

Optimal starting control strategy of compound power-split system based on dynamic programing algorithm

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