Performance investigation and feasibility study of novel gas foil thrust bearing for hydrogen fuel cell vehicles

Shi, Ting; Huang, Haiyang; Chen, Qinlong; Peng, Xueyuan; Feng, Jianmei

doi:10.1002/er.8033

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…With the rapid development of new energy vehicles, fuel cell vehicles are gradually favored by researchers due to their zero-emission, long-range, and fast refueling rate [1][2] . Currently, the two major problems limiting the large-scale commercialization of fuel cell vehicles are cost and durability.…”

Section: Introductionmentioning

confidence: 99%

Development of aggressive driving conditions for light-duty fuel cell vehicles in Beijing

Zheng,

Liu,

et al. 2024

J. Phys.: Conf. Ser.

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As the main technology route of new energy vehicles, the reliability and durability of fuel cell vehicles have gradually become the focus of researchers. Based on the actual road driving data of fuel cell light-duty vehicles in Beijing, this paper screened out the aggressive driving segments of different speed intervals through the RPA95% quantile curve and constructed a library of aggressive driving conditions of fuel cell vehicles, based on this library, we developed the aggressive driving conditions of fuel cell vehicles that meet the actual driving scenarios of users. The driving conditions have a deviation of no more than 8% from the corresponding library in the three key indexes of average speed, average acceleration, and average deceleration. In addition, this paper also compared the differences between the constructed aggressive driving condition and the CLTC-P condition, which verifies the necessity of the aggressive driving condition in the durability test of fuel cell vehicles. So, this condition can be used as the basic condition for the subsequent durability test of fuel cell vehicles. It will help enterprises shorten the test cycle and reduce the test cost. It can also support the formulation of the durability test specification for the subsequent fuel cell vehicles. At the same time, it can also support the formulation of subsequent durability test specifications for fuel cell vehicles.

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Section: Introductionmentioning

confidence: 99%

Development of aggressive driving conditions for light-duty fuel cell vehicles in Beijing

Zheng,

Liu,

et al. 2024

J. Phys.: Conf. Ser.

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show abstract

“…For on-board applications, high durability is indispensable. However, more research has been done on the performance of GFBs, and less has focused on their durability [12][13][14][15], and the failure pattern of GFBs under long-term on-board operation is still unclear. Knowledge of this pattern is critical for commercial FCVACs that require both longevity and high safety standards.…”

Section: Introductionmentioning

confidence: 99%

The Two-Pad: A Novel Gas Foil Bearing for Fuel Cell Vehicles

Ying,

Liu,

Zhang

et al. 2023

International Journal of Energy Research

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Reducing costs and improving durability are essential factors for commercializing gas foil bearings, crucial components of fuel cell vehicle air compressors. In this paper, a two-pad gas foil bearing is proposed. By reducing the number of top foils, adopting a symmetrical design, and eliminating the welding step, the cost of processing and assembly is reduced, and the potential source of failure caused by welding is eliminated. The feasibility of the two-pad gas foil bearing was verified through testing on a commercial fuel cell vehicle air compressor. Then, durability testing was performed in accordance with fuel cell vehicle usage requirements, including an accelerated random vibration test equivalent to 6,000 h of on-board operation and a 200,000-cycle start-stop test. These tests simulated the damage caused to the bearings during fuel cell vehicle operation and start-stop periods, respectively. The durability test results indicated that the two-pad gas foil bearing provides good start-stop durability but insufficient durability against on-board random vibration. The failure causes were analyzed, and improvement measures were proposed. Our findings can be utilized to guide the manufacturing of low-cost and highly durable gas foil bearings.

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“…Similar performance tests were conducted on hydrodynamic gas foil journal bearing (GFJB) and foil thrust bearing (FTB) on a turbo-expander by T Lai et al [3] for rotating speeds up to 52,000 rpm. Effect of foil stiffness and RESEARCH nominal clearance on static performance of GFTB with top foil, bump foil, and supporting foil were tested for a centrifugal air compressors by Ting Shi and others [4]. Tae Ho Kim et al [5,6] conducted parametric studies on dynamic characteristics of GFTB in terms of axial vibrational amplitude of the rotor at 20,000 rpm.…”

Section: Introductionmentioning

confidence: 99%

Parametric Studies on Performance of Oil-Free Thrust Foil Bearings at Lower Speeds

Shivakumar¹,

Raju²,

Ravikuma³

et al. 2023

Tribol. Ind.

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The present work involves an experimental analysis on gas-lubricated foil thrust bearing (FTB) that has major applications in food processing units at lower operating speeds. Parametric studies include testing thrust foil bearings with various foil configurations in terms of foil thickness, foil geometry, and foil material. Novel bearing testing apparatus designed and fabricated for the purpose supported a larger diameter (224 mm) thrust foil bearing, operated at speeds ranging from 10,000 rpm to 18,000 rpm. Performance of air foil thrust bearing (AFTB) concerning static structural stiffness and load bearing capability was determined in optimizing the best foil configuration. A novel dimensionless number was formulated that emphasizes the affecting factors of thrust foil bearing with respect to axial loads.

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Performance investigation and feasibility study of novel gas foil thrust bearing for hydrogen fuel cell vehicles

Cited by 9 publications

References 26 publications

Development of aggressive driving conditions for light-duty fuel cell vehicles in Beijing

Development of aggressive driving conditions for light-duty fuel cell vehicles in Beijing

The Two-Pad: A Novel Gas Foil Bearing for Fuel Cell Vehicles

Parametric Studies on Performance of Oil-Free Thrust Foil Bearings at Lower Speeds

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