scholarly journals State-of-the-art and some considerations on thermal load analysis and thermal management for hydraulic system in MEA

2018 ◽  
Vol 2018 (13) ◽  
pp. 399-405 ◽  
Author(s):  
Dong Li ◽  
Sujun Dong ◽  
Jun Wang ◽  
Yunhua Li
Keyword(s):  
Thermal Management ◽  
Thermal Load ◽  
Hydraulic System ◽  
State Of The Art ◽  
Load Analysis

Emerging interface materials for electronics thermal management: experiments, modeling, and new opportunities

2020 ◽  
Vol 8 (31) ◽  
pp. 10568-10586 ◽  
Author(s):  
Ying Cui ◽  
Man Li ◽  
Yongjie Hu
Keyword(s):  
Thermal Management ◽  
High Performance ◽  
State Of The Art ◽  
Interface Materials

State-of-the-art experiments and modeling, challenges, and future opportunities for developing high-performance interface materials for electronics thermal management.

System integration of high intensity energy subsystems – a thermal management challenge

2008 ◽  
Vol 112 (1134) ◽  
pp. 477-482
Author(s):  
D. M. Pratt ◽  
D. Moorhouse
Keyword(s):  
Thermal Management ◽  
Air Force ◽  
System Integration ◽  
High Intensity ◽  
State Of The Art ◽  
Cooling Capacity ◽  
Future Research ◽  
Current State ◽  
Management Capability ◽  
Management Challenge

Current and future Air Force weapons systems lack the necessary power and cooling capacity to provide full systems level capability as a result of energy and thermal management limitations. Cooling capacity of fuel is already fully utilised leaving little room for additional cooling needs. Additionally, increasing speed, power, and miniaturisation of future systems continue to stress any thermal management capability that we can now deliver. Thus, the focus of this paper is a conceptual assessment of the key energy and thermal management technologies to meet the future energy challenges. It presents an overview of the current state of the art and also possible future research.

State-of-the-art thermal management demonstrated on cabin air conditioning

ATZ worldwide ◽  
2007 ◽  
Vol 109 (2) ◽  
pp. 29-32
Author(s):  
Thomas Schneider ◽  
Michael Ellinger ◽  
Stefan Paulke ◽  
Stefan Wagner ◽  
Henry Pastohr
Keyword(s):  
Thermal Management ◽  
Air Conditioning ◽  
State Of The Art

The Working Hydraulics of Valve-Controlled Mobile Machines: Classification and Review

2020 ◽  
Vol 142 (7) ◽  
Author(s):  
Damiano Padovani ◽  
Massimo Rundo ◽  
Gabriele Altare
Keyword(s):  
Hydraulic System ◽  
Review Paper ◽  
State Of The Art ◽  
Comprehensive Overview ◽  
Fuel Price ◽  
System Architectures ◽  
Emission Regulations ◽  
Pros And Cons ◽  
Key Aspects ◽  
Research Stage

Abstract Productivity, reliability, controllability, flexibility, and affordable costs represent key aspects in mobile machines. Additionally, due to the high fuel price and the introduction of stringent emission regulations for diesel engines, the reduction of fuel consumption while persevering the existing performance is the current demand. In order to satisfy and maximize the above requirements, different hydraulic system architectures have been developed during the last decades. Both academia and industry have been investing considerable resources delivering numerous outcomes that require a classification. This review paper closes this gap by analyzing and classifying the working hydraulics of nonhybrid, valve-controlled mobile machines starting from the 1980s to the state of the art. Hydraulic layouts are addressed and categorized by both discussing their fundamentals and evolutions, and by pointing out their pros and cons in a way to provide the readers with a comprehensive overview of the systems currently available on the market and at the research stage.

Thermal Load Analysis of Piston in a Biogas Engine

2011 ◽  
Vol 63-64 ◽  
pp. 1005-1008
Author(s):  
Yi Wu ◽  
Yi Qiang Peng ◽  
Chong Huai Shi
Keyword(s):  
Thermal Stress ◽  
Thermal Load ◽  
Thermal Deformation ◽  
Temperature Fields ◽  
Supporting Evidence ◽  
Thermal Strength ◽  
Geometry Model ◽  
Combustion Duration ◽  
Load Analysis ◽  
Set Up

As a kind of new renewable energy, biogas is receiving more and more attentions. However, its combustion duration is longer than diesel, which causes the bigger thermal load of engine. A geometry model of a biogas engine’s piston is set up in Proe 4.0. The temperature fields, thermal stress and thermal deformation of the piston are calculated using ANSYS 10.0. The result shows that the thermal load of biogas engine is still within the thermal strength of the material, thus provides supporting evidence for the popularity of biogas.

Spring Parameters Design for the New Hydraulic Actuated Quadruped Robot

2014 ◽  
Vol 6 (2) ◽  
Author(s):  
Xianbao Chen ◽  
Feng Gao ◽  
Chenkun Qi ◽  
Xinghua Tian ◽  
Jiaqi Zhang
Keyword(s):  
Hydraulic System ◽  
Stance Phase ◽  
State Of The Art ◽  
Dynamic Performance ◽  
Weight Ratio ◽  
Quadruped Robot ◽  
Hydraulic Pressure ◽  
System Pressure ◽  
Pump Pressure ◽  
Very High

More and more state-of-the-art robots have employed hydraulic actuating systems. It has a high power-to-weight ratio. Robots with these actuators can bear more payloads and achieve highly dynamic performance. However, the energy consumption is also very high and the system is very complicated comparing to the electronic motor actuated robot. A lot of research has been done to save the energy. Among which the application of springs is one of the most commonly used methods. This paper presents another use of the spring to save the energy by reducing the hydraulic system pressure of a newly built robot called the “Baby Elephant.” The configuration of the spring is designed according to the leg mechanism. The spring gives an assist force in the stance phase of the leg and exerts a passive payload in the swing phase. The maximum cylinder force is then reduced so as to bring down the pump pressure. The energy to be saved depends on how much the hydraulic pressure can be reduced. In this paper, the Baby Elephant is briefly introduced, the design of the springs on saving the energy are described. Simulations and experiments are carried out to confirm the effect.

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