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The Influence of Fuel Pressure Ripple on Performances of Engine Control System [PDF]
Linköping Electronic Conference Proceedings, 2013 Pressure and flow ripple generated by a fuel pump have essential impact on static and dynamic performances of an engine control system. It is especially dangerous for open-loop control used at a turbojet starting mode. The fuel consumption deviation at the engine starting caused by nonlinear averaging of fluctuations over throttling elements can reach ...
V Shorin, A Gimadiev, V Sverbilov
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Energies, 2021 The efficiency requirements for hydraulic pumps applied in automatic transmissions in future generations of automobiles will increase continuously. In addition, the pumps must be able to cope with multiphase flows to a certain extent.
Thomas Lobsinger +3 more
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PRESSURE AND FLOW RIPPLES OF A VARIABLE-DISPLACEMENT VANE-PUMP
Proceedings of the JFPS International Symposium on Fluid Power, 1989 Pressure and flow ripples of a variable-displacement vane-pump with a pressure compensator were analyzed by numerical calculations, and their results were compared with experiments. The behavior of the leakages and the other factors affecting pressure ripples were examined in detail.
Ueno, Hisanori +2 more
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Current Directions in Biomedical Engineering, 2015 The reduction of the pulsation of flow and pressure as well as the increase of the mean flow of a displacement pump will be a benefit to many technical processes, especially in the pharmaceutical industry and in biomedicine.
Klopsch Vincent +2 more
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Influence of oil temperature changing over time on pump-induced pressure ripples in a hydraulic line
Nihon Kikai Gakkai ronbunshu, 2017 It is known that fluid-borne noise emitted from a hydraulic system often causes severe discomfort of the operator. It is also known that the noise can change as the system warms up.
Shuichi NAKAGAWA +2 more
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Chinese-style incentives: The intraindustry ripple effects of CEO awards.
PLoS ONE, 2021 Considering the background of traditional Chinese culture, which emphasizes that "when we see outstanding people, we should think of emulating them", and social comparison theory, this study explores how CEO awards impact the R&D investment of award ...
Yu Wu, Yingyi Hu
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Harmonic Suppression and Torque Ripple Reduction of a High-Speed Permanent Magnet Spindle Motor
IEEE Access, 2021 In this paper, the method of harmonic suppression and torque ripple reduction is studied for the structure characteristics and design requirements of a high-speed permanent magnet spindle motor.
Haining Zhao, Shenbo Yu, Feng Sun
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Experimental Study on R32 Flow and Condensation Heat Transfer in Tubes with Enhanced Surface
Zhileng xuebao, 2023 Experiments were conducted to study the condensation heat transfer and pressure drop characteristics of refrigerant R32 in aluminum herringbone tubes, ripple tubes, and smooth tubes. The experimental refrigerant mass flow rate is 100-350 kg/(m2·s).
Liu Xiangzeng +6 more
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Theoretical Analysis for the Flow Ripple of a Tandem Crescent Pump with Index Angles
Applied Sciences, 2017 This paper presents a theoretical approach for lowering the outlet flow ripple of a crescent pump by applying a tandem crescent pump consisting of two gear pairs with an index angle between them.
Hua Zhou +3 more
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EnergiesThis paper concerns the utilisation of a gas bladder hydraulic suppressor to mitigate oscillations in the delivery flow rate of positive displacement machines.
Paolo Casoli +3 more
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