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: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/179830 |
| _version_ | 1826111869720461312 |
|---|---|
| author | Vahdati, Nader Alteneiji, Aamna Yap, Fook Fah Shiryayev, Oleg |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Vahdati, Nader Alteneiji, Aamna Yap, Fook Fah Shiryayev, Oleg |
| author_sort | Vahdati, Nader |
| collection | NTU |
| 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 | 2024-10-01T02:57:38Z |
| format | Journal Article |
| id | ntu-10356/179830 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:57:38Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1798302024-08-31T16:48:27Z Amplitude-sensitive single-pumper hydraulic engine mount design without a decoupler Vahdati, Nader Alteneiji, Aamna Yap, Fook Fah Shiryayev, Oleg School of Mechanical and Aerospace Engineering Engineering Nonlinear vibration Hydraulic engine mounts 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. Published version 2024-08-27T01:05:55Z 2024-08-27T01:05:55Z 2024 Journal Article Vahdati, N., Alteneiji, A., Yap, F. F. & Shiryayev, O. (2024). Amplitude-sensitive single-pumper hydraulic engine mount design without a decoupler. Applied Sciences, 14(6), 2568-. https://dx.doi.org/10.3390/app14062568 2076-3417 https://hdl.handle.net/10356/179830 10.3390/app14062568 2-s2.0-85192544503 6 14 2568 en Applied Sciences © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). application/pdf |
| spellingShingle | Engineering Nonlinear vibration Hydraulic engine mounts Vahdati, Nader Alteneiji, Aamna Yap, Fook Fah Shiryayev, Oleg Amplitude-sensitive single-pumper hydraulic engine mount design without a decoupler |
| 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 | Engineering Nonlinear vibration Hydraulic engine mounts |
| url | https://hdl.handle.net/10356/179830 |
| work_keys_str_mv | AT vahdatinader amplitudesensitivesinglepumperhydraulicenginemountdesignwithoutadecoupler AT alteneijiaamna amplitudesensitivesinglepumperhydraulicenginemountdesignwithoutadecoupler AT yapfookfah amplitudesensitivesinglepumperhydraulicenginemountdesignwithoutadecoupler AT shiryayevoleg amplitudesensitivesinglepumperhydraulicenginemountdesignwithoutadecoupler |