Design and optimization of the transition curve in the novel profiled chamber metering pump

Liu, Li; Ding, Chuan; Wang, Pengfei

doi:10.1177/1464419319900755

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…e centrifugal force is instantaneously imposed on the vehicle at the crossroad of a tangent and a horizontal curve. erefore, a transition curve should be utilized so that this defect is removed and the force is imposed gradually [3,4]. Moreover, the superelevation should be provided in the curve so that the safe movement of the vehicle is feasible.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Application of Maximum Radius in Horizontal Curves Using Vehicle Dynamic Simulation

Aldeen

Kordani

Hosseinian

et al. 2022

Advances in Civil Engineering

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Most road design standards recommend using a spiral curve for transitions. The main advantages of using this curve are the gradual increase in the centrifugal force, creating a suitable space for presenting superelevation, and providing a correct perception of the curve for the driver. In this research, vehicle dynamic simulation software CarSim and TruckSim is used to assess the forces imposed on the vehicles. In this regard, 360 scenarios are considered for sedans, SUVs, and trucks, which consist of variations of the road geometry (simple or spiral horizontal curve), curve radius, and type and speed of the vehicle. In addition, the regression analysis is performed to examine the relationships between the lateral acceleration (as a dependent variable) and the vehicle speed, curve radius, and vehicle type (as independent variables). The results indicate that in all cases, safety in the spiral horizontal curve is greater than that in the simple horizontal curve, and the maximum side friction factor, lateral acceleration, roll rate, roll angle, yaw rate, and lateral distance in the simple horizontal curve are higher than those in the spiral horizontal curve. Moreover, the difference percentage of the side friction factor, lateral acceleration, yaw rate, and lateral distance between the simple and spiral horizontal curves is the highest in SUVs, followed by sedans and trucks, while the difference percentage of the roll rate and roll angle is the highest in sedans, followed by SUVs and trucks. The results of regression analysis illustrate that the coefficient of determination (R2) in the proposed model is 0.972, 0.964, and 0.981 for sedans, SUVs, and trucks, respectively, indicating the strong relationships between the dependent and the explanatory variables as well as the capability of the model to cover the data.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Application of Maximum Radius in Horizontal Curves Using Vehicle Dynamic Simulation

Aldeen

Kordani

Hosseinian

et al. 2022

Advances in Civil Engineering

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Hybrid surface modification for improved tribological performance of IC engine components – a review

Murari

Nahak

Pratap

2023

Proceedings of the Institution of Mechanical Engineers, Part E:

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The worldwide increase in demand for automotive sectors requires improved components life cycle, fuel economy and emission control. However, the occurrence of high temperature and variable loading on contact surfaces of internal combustion (IC) engine causes excessive friction results into reduced component life cycle, degrades emission level and fuel economy too. A small improvement in tribological performance and oil sealing through surface modification can able to enhance the functional performance of IC engine components significantly. Hence, in this work, a detailed discussion on the comparison of different hybrid surface modification techniques such as coatings, textures, and nanoparticles can work synergistically to improve the tribological performance of IC engine components. The process capabilities, limitations, and their effect on tribological performances of IC engine components are also presented. An analysis of surface texture parameters such as geometry, dimension, motion parameters, surface roughness, and oil transport mechanism is done to know the effects on the performance of the IC Engine. Further, the hybridization of different processes with nanoparticles (metallic, metallic oxides, carbon nanoparticles) is briefly presented. Finally, the effect of modified surface chemistry and characterization such as asperity, topography, microhardness, residual stress, and adhesive strength characteristics is also related to the tribological performances of IC engine components.

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Stator Curvature Optimization and Analysis of Axial Hydraulic Vane Pumps

et al. 2022

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Aiming at the problem of large vibration of a high-subside stator inner cavity curve vane pump, the force analysis of the vane at the transition curve is carried out, and the functional relationship between the vane turning angle θ, the large arc radius R, the small arc radius r and the sliding friction is established. The particle swarm algorithm is used to optimize the solution of the objective function, and the optimized parameter values are brought into the MATLAB simulation program to obtain the optimized stator curve profile diagram. The dynamic performance of the vane pump before and after optimization is simulated using ADAMS. The results show that: the acceleration of the vane pump slide is significantly reduced; the friction between the slide and the slide groove is significantly reduced; the contact force between the slide and the stator is significantly reduced; the impact vibration of the optimized vane pump is significantly reduced; and the dynamic performance of the vane pump is improved.

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Design and optimization of the transition curve in the novel profiled chamber metering pump

Cited by 3 publications

References 21 publications

Evaluation of the Application of Maximum Radius in Horizontal Curves Using Vehicle Dynamic Simulation

Evaluation of the Application of Maximum Radius in Horizontal Curves Using Vehicle Dynamic Simulation

Hybrid surface modification for improved tribological performance of IC engine components – a review

Stator Curvature Optimization and Analysis of Axial Hydraulic Vane Pumps

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