Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler
Engine mounts serve three primary purposes: (1) to support the weight of the engine, (2) to lessen the transmitted engine disturbance forces to the vehicle structure/chassis or airplane fuselage, and (3) to limit the engine motion brought on by shock excitations. The engine mount’s stiffness must be...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/6/2568 |
| _version_ | 1827307143381909504 |
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| author | Nader Vahdati Aamna Alteneiji Fook Fah Yap Oleg Shiryayev |
| author_facet | Nader Vahdati Aamna Alteneiji Fook Fah Yap Oleg Shiryayev |
| author_sort | Nader Vahdati |
| collection | DOAJ |
| description | Engine mounts serve three primary purposes: (1) to support the weight of the engine, (2) to lessen the transmitted engine disturbance forces to the vehicle structure/chassis or airplane fuselage, and (3) to limit the engine motion brought on by shock excitations. The engine mount’s stiffness must be high to control large engine motions and low to control chassis or vehicle body vibration. When hydraulic engine mounts are used, a device called a decoupler creates the dual stiffness requirement. However, numerous investigations have shown that the decoupler has the potential to rotate within its cage bound and become stuck or sink and obstruct fluid flow between the fluid chambers due to a density mismatch between the decoupler and the working fluid. In addition, most hydraulic engine mounts with a decoupler no longer act as vibration isolators but as hydraulic dampers. This study suggests a new amplitude-sensitive hydraulic engine mount design without a decoupler, where the vibration isolation of the engine mount is retained and there is a 75% reduction in the peak frequency, which further enhances the engine mount’s capabilities in comparison to the current hydraulic engine mounts with a decoupler. The new design concept and its mathematical model and simulation results will be presented. |
| first_indexed | 2024-04-24T18:34:15Z |
| format | Article |
| id | doaj.art-465bd7ccb40647b69c486eff8a830889 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-24T18:34:15Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-465bd7ccb40647b69c486eff8a8308892024-03-27T13:20:07ZengMDPI AGApplied Sciences2076-34172024-03-01146256810.3390/app14062568Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a DecouplerNader Vahdati0Aamna Alteneiji1Fook Fah Yap2Oleg Shiryayev3Mechanical and Nuclear Engineering Department, Healthcare Engineering Innovation Center (HEIC), Khalifa University of Science and Technology, SAN Campus, Abu Dhabi 127788, United Arab EmiratesMechanical and Nuclear Engineering Department, Khalifa University of Science and Technology, Main Campus, Abu Dhabi 127788, United Arab EmiratesSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, SingaporeMechanical Engineering Department, University of Alaska Anchorage, 3211 Providence Dr., Anchorage, AK 99508, USAEngine mounts serve three primary purposes: (1) to support the weight of the engine, (2) to lessen the transmitted engine disturbance forces to the vehicle structure/chassis or airplane fuselage, and (3) to limit the engine motion brought on by shock excitations. The engine mount’s stiffness must be high to control large engine motions and low to control chassis or vehicle body vibration. When hydraulic engine mounts are used, a device called a decoupler creates the dual stiffness requirement. However, numerous investigations have shown that the decoupler has the potential to rotate within its cage bound and become stuck or sink and obstruct fluid flow between the fluid chambers due to a density mismatch between the decoupler and the working fluid. In addition, most hydraulic engine mounts with a decoupler no longer act as vibration isolators but as hydraulic dampers. This study suggests a new amplitude-sensitive hydraulic engine mount design without a decoupler, where the vibration isolation of the engine mount is retained and there is a 75% reduction in the peak frequency, which further enhances the engine mount’s capabilities in comparison to the current hydraulic engine mounts with a decoupler. The new design concept and its mathematical model and simulation results will be presented.https://www.mdpi.com/2076-3417/14/6/2568nonlinear vibrationhydraulic engine mountsamplitude sensitivedecouplerpassive |
| spellingShingle | Nader Vahdati Aamna Alteneiji Fook Fah Yap Oleg Shiryayev Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler Applied Sciences nonlinear vibration hydraulic engine mounts amplitude sensitive decoupler passive |
| title | Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler |
| title_full | Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler |
| title_fullStr | Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler |
| title_full_unstemmed | Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler |
| title_short | Amplitude-Sensitive Single-Pumper Hydraulic Engine Mount Design without a Decoupler |
| title_sort | amplitude sensitive single pumper hydraulic engine mount design without a decoupler |
| topic | nonlinear vibration hydraulic engine mounts amplitude sensitive decoupler passive |
| url | https://www.mdpi.com/2076-3417/14/6/2568 |
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