Characteristics of throttles in hydraulic shock absorber considering temperature changes of fluid

Igor Nochnichenko, Oleksandr Uzunov

Abstract


The work is devoted to experimental research of hydraulic damper throttle elements characteristics. The throttles that are formed by the functional gaps between the piston and the cylinder and piston and rod, the piston throttles and the bottom-throttles of the damper were investigated. The dependencies of flow coefficient from Reynolds numbers, which based on experimental data, for power fluids with different viscosities were calculated and represented for a temperature range 13.5 ... 60.1 ° C of the power liquid. Using these characteristics for design calculations could be more accurately determine the resistance force of the dampers. This recommendations allow reducing the temperature influence on the hydraulic damper's characteristics.

Keywords


valve-throttle unit; hydraulic throttle; flow coefficient; temperature; shock absorber

Full Text:

PDF

References


Derbaremdiker, A.D. (1985), Amortizatory transportnyh mashin, [Shock absorbers transport vehicles], 2nd ed., Mashinostroenie, Moscow, Russia.

Strutyns`kyj, V.B. and Kolot, O.V. (2005), Matematychne modelyuvannya stoxastychnyx procesiv u systemax pryvodiv, [Mathematical modeling of stochastic processes in drive systems], ZAT “Tyrazh-51”, Kramators`k, Ukraine.

Raimpel, I. (1986), Shassi avtomobilya: Amortizatory, shiny i kolesa [Car chassis: Absorbers, tires and wheels], 2nd ed., Mashinostroenie, Moscow, Russia.

Platonov, V.F. (1989), Polnoprivodnye avtomobili, [All-wheel drive cars], Mashinostroenie, Moscow, Russia.

Malomyzhev, O.L., Semenov, A.G. and Skutel'nik, V.V. (2016), “Degazacija rabochej zhidkosti gidravlicheskogo amortizatora”, Nauchnyj recenziruemyj zhurnal "Vestnik SibADI”. vol. 50, no. 4, pp. 65–70.

Uzunov, O.V., Nochnichenko, I.V. and Galec'kyj, O.S. (2009), “Vplyv temperaturnyh zmin harakterystyk droseliv na robotu gidravlichnogo amortyzatora”, Vestnik Nacional'nogo tehnicheskogo universiteta "Kievskij politehnicheskij institut". Serija mashinostroenie" no. 57, pp.157–163.

Nochnichenko, I.V. and Uzunov, O.V. (2012), “Stabilizacija harakterystyk avtomobil'noi' pidvisky v zminnyh umovah ekspluatacii' za rahunok adaptyvnyh vlastyvostej amortyzatora”, Promyslova gidravlika i pnevmatyka Vseukra'ins'kyj naukovotehnichnyj visnyk. vol. 38, no. 4, pp. 90-95.

Nochnichenko, I.V. (2014), Gidravlichny`j amortyzator z avtomatychnoyu stabilizaciyeyu xarakterystyk v zminnyx umovax ekspluataciyi', Visnyk Kremenchucz`kogo nacional nogo universytetu im. M.Ostrograds`kogo vol. 86, no. 3, pp. 117-124.

Uzunov, O.V., Nochnichenko, I.V. and Galecz`kyj, O.S. (2014), Utochnennya koeficiyentu vytraty dlya gidravlichnyx droseliv klapanno-drosel`nyx grup, Journal of Mechanical Engineering NTUU “Kyiv Polytechnic Institute, vol. 72 no. 3 pp. 169–174.

Uzunov, O.V., Nochnichenko, I.V. and Galec'kyj, O.S. (2010), Klapanno-drosel'nyj vuzol amortyzatora [Valve-throttle shock absorber unit], Patent Ukrainy no 90180.


GOST Style Citations






DOI: https://doi.org/10.20535/2521-1943.2017.80.109169

Refbacks

  • There are currently no refbacks.