Transmission Gear Whine Control by Multi-Objective Optimization and Modification Design

Lei, Yulong; Hou, Liguo; Fu, Yao; Hu, Jianlong; Chen, Wei

doi:10.4271/2018-01-0993

Cited by 2 publications

(4 citation statements)

References 10 publications

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“…The TE can then be calculated for each of these spur gear slices by approximating them as a spring of known stiffness and the sum of the loads equated to the total applied load. Lei et al 10 calculated TE based on the improved Smith slice method and obtained optimum gear micro-modification parameters based on an improved particle swarm optimisation algorithm. Velex et al 11 theoretically analysed the link between dynamic mesh excitations and TEs by using a modular three-dimensional model of multi-mesh gears.…”

Section: Introductionmentioning

confidence: 99%

Model-based transmission acoustic analysis and improvement

Cao

Chen

Zang

2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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A model-based transmission acoustic performance has been studied. Both excitation source and structure-borne noise transfer are investigated. For excitation source, transmission error is the main cause. To reduce transmission error, the most effective method is gear micro-geometry modification. However, there is no direct mathematical model that could reveal the relationship between transmission error and gear micro-geometry parameters, especially in the context of transmission system with shafts, bearings and housings included. By using multiple variable linear regression method, the relationship between transmission error and gear micro-geometry parameters is connected. The optimised transmission error decreases from 9.34 to 5.65 μm at a typical working condition. For structure-borne noise transfer, the housing modal and transmission system modal have been analysed. Based on the simulation results, housing thickness around bearing assembly area is increased, and strengthen ribs are added at weak areas. As a result, the amplitude of housing vibration acceleration is reduced. Finally, the transmission noise sound pressure level at 0.3-m distance has decreased by 4.63 dB on average. The presented model-based transmission acoustic analysis work flow is demonstrated workable and effective.

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Section: Introductionmentioning

confidence: 99%

Model-based transmission acoustic analysis and improvement

Cao

Chen

Zang

2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Active measures are mainly concentrated on addressing noise sources. A high-contact ratio gear, helical gear, modified tooth profile and high-quality tooth surface can reduce the gear whining noise [83,90]. Minimizing the backlash and the inertia of loose parts, optimizing the synchronizer design and reducing torsional vibration from the ICE can help reduce the rattling noise [91].…”

Section: Nvh Technologymentioning

confidence: 99%

“…The whining noise is related to two main excitations of loaded gear pairs: transmission error and time-varying mesh stiffness [81][82][83]. The transmission error is defined as the deviation of the actual meshing position from the theoretical position, which is strongly affected by gear manufacturing errors, assembly errors and tooth deformations.…”

Section: Nvh Technologymentioning

confidence: 99%

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Progress in Automotive Transmission Technology

Dong

Liu

et al. 2018

Automot. Innov.

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Much progress has been made in the development of automotive transmissions over the past 20 years, e.g., an increased speed number, expanded ratio spread and improved efficiency and shift quality. Automotive transmissions are moving toward electrification in response to stringent legislation on emissions and the pressing demand for better fuel economy. This paper reviews progress in automotive transmission technology. Assisted by computer-aided programs, new transmission schemes are constantly being developed. We therefore first introduce the synthesis of the transmission scheme and parameter optimization. We then discuss the progress in the transmission technology of a conventional internal combustion engine vehicle in terms of new layouts; improved efficiency; noise, vibration and harshness technology; and the shifting strategy and control technology. As the major development trend, transmission electrification is subsequently discussed; this discussion includes the configuration design, energy management strategy, hybrid mode shifting control, single-speed and multi-speed electric vehicle transmission and distributed electric drive. Finally, a summary and outlook are presented for conventional automotive transmissions, hybrid transmissions and electric vehicle transmissions.

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Transmission Gear Whine Control by Multi-Objective Optimization and Modification Design

Cited by 2 publications

References 10 publications

Model-based transmission acoustic analysis and improvement

Model-based transmission acoustic analysis and improvement

Progress in Automotive Transmission Technology

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