scholarly journals Modeling and Analysis of the Pressure Shock Characteristics of a Load-sensitive Hydraulic System Jointly Controlled by Pump and Valve

2021 ◽  
Vol 631 ◽  
pp. 012081
Author(s):  
Yiou Liu ◽  
Qiwei Lai ◽  
Runlin Zhang ◽  
Nei Wang
Keyword(s):  
Hydraulic System ◽  
Pressure Shock ◽  
Modeling And Analysis

Modeling and Analysis of the Hydraulic System for Oil Budget in an Automotive Transmission

2008 ◽  
Author(s):  
Hsu-Chiang Miao ◽  
Zongxuan Sun ◽  
Jonathan Fair ◽  
Joshua Lehrmann ◽  
Samuel Harbin
Keyword(s):  
Fuel Economy ◽  
Hydraulic System ◽  
Dynamic Performance ◽  
Operating Conditions ◽  
Modeling And Analysis ◽  
Budget Analysis ◽  
Automotive Transmission ◽  
Transmission Oil ◽  
Dynamic Operating ◽  
Cooling And Lubrication

Many automotive transmissions, including automatic and hybrid transmissions, employ electro-hydraulics for gear shift, system cooling, and lubrication. Transmission oil budget refers to the process of dynamically distributing pressurized fluid from the pump into the sub-systems of the transmission. The oil budget will ultimately determine the transmission pump size and directly impact vehicle fuel economy. It will further affect the dynamic performance of the transmission. Due to large number of components, complex hydraulic circuits, and dynamic operating conditions, estimating transmission oil budget is extremely complex. To obtain a precise oil budget, we need to not only model each hydraulic component accurately, but also analyze the flow requirement in a dynamic fashion. This paper presents the modeling of the transmission hydraulic system and its application for oil budget analysis.

scholarly journals Modeling and Analysis of Different Architecture for Civil Aircraft Hydraulic System

2021 ◽  
Vol 2068 (1) ◽  
pp. 012028
Author(s):  
Xunan He ◽  
YuanLi Kang ◽  
Yannian Hui
Keyword(s):  
Fuel Consumption ◽  
Hydraulic System ◽  
Modeling Method ◽  
Traditional Architecture ◽  
Modeling And Analysis ◽  
Important Index ◽  
Civil Aircraft ◽  
Weight Penalty

Abstract For the evaluation of civil aircraft hydraulic system, Fuel Consumption is a very important index. However, there is no effective method to perform analysis for different architecture. This paper proposes that taking fuel weight penalty as a major mathmatical modeling method to analysis traditional architecture and more electric architecture. The result shows that the fuel consumption of more electric architecture is less than traditional architecture.

Modeling and analysis of an intersection on AGT

1981 ◽  
Vol 64 (10) ◽  
pp. 18-27
Author(s):  
Yoshio Hamamatsu ◽  
Katsuhiro Nakada ◽  
Ikuo Kaji ◽  
Osamu Doi
Keyword(s):  
Modeling And Analysis

Simulation and Analysis of Two-Mass Suspension Modification Using MATLAB Programming

2019 ◽  
Vol 3 (1) ◽  
pp. 160-165
Author(s):  
Hendry D. Chahyadi
Keyword(s):  
Vibrational Energy ◽  
State Space Model ◽  
Mass System ◽  
Modeling And Analysis ◽  
The Road ◽  
Final Project ◽  
Quarter Car ◽  
Automotive Suspension ◽  
Mass Spring ◽  
Matlab Programming

The designs of automotive suspension system are aiming to avoid vibration generated by road condition interference to the driver. This final project is about a quarter car modeling with simulation modeling and analysis of Two-Mass modeling. Both existing and new modeling are being compared with additional spring in the sprung mass system. MATLAB program is developed to analyze using a state space model. The program developed here can be used for analyzing models of cars and vehicles with 2DOF. The quarter car modelling is basically a mass spring damping system with the car serving as the mass, the suspension coil as the spring, and the shock absorber as the damper. The existing modeling is well-known model for simulating vehicle suspension performance. The spring performs the role of supporting the static weight of the vehicle while the damper helps in dissipating the vibrational energy and limiting the input from the road that is transmitted to the vehicle. The performance of modified modelling by adding extra spring in the sprung mass system provides more comfort to the driver. Later on this project there will be comparison graphic which the output is resulting on the higher level of damping system efficiency that leads to the riding quality.

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