Search for dissertations about: "hydraulic pump"

Showing result 1 - 5 of 21 swedish dissertations containing the words hydraulic pump.

  2. 1. Mobile Working Hydraulic System Dynamics

    Author : Mikael Axin; Petter Krus; Marcus Geimer; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis deals with innovative working hydraulic systems for mobile machines. Flow control systems are studied as an alternative to load sensing. The fundamental difference is that the pump is controlled based on the operator’s command signals rather than feedback signals from the loads. READ MORE

  4. 2. Noise reduction of hydraulic systems : design considerations and methods

    Author : Andreas Johansson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : AS A CONSEQUENCE OF increased requirements concerning pleasant working conditions, the system designer of today is facing challenges besides the traditional performance related ones. Subjects such as cleanliness, low sound and vibration levels etc. play important roles in modern system development. READ MORE

  5. 3. Flow Pulsations in Fluid Power Machines - a Measurement and Simulation Study

    Author : Liselott Ericson; Linköpings universitet; []
    Keywords : noise; pump; motor; measurement; optimisation; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : Stricter requirements for better working environment involve noise and vibration control of hydraulic machines. The operational conditions for hydraulic machines, such as pressure and rotational speed, are also increasing and this makes it even more difficult to develop a quiet, vibration-free machine due to the interdependence between noise and escalating operational conditions. READ MORE

  6. 4. Design principles for noise reduction in hydraulic piston pumps : simulation, optimisation and experimental verification

    Author : Andreas Johansson; Kevin Edge; Linköpings universitet; []
    Keywords : hydraulic piston pumps; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : Noise reduction in hydmulic systems has been an important research topic for several decades. In recent years, industry's interest in the area has grown dramatically. The reason is new national and international requirements and legislation governing working conditions. READ MORE

  7. 5. Design of Electro-Hydraulic Energy Converters : With Focus on Integrated Designs and Valve Plate Rotation

    Author : Thomas Heeger; Liselott Ericson; Andreas Johansson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : In mobile working machines, there is a trend towards replacing combustion engines by electric machines to reduce their carbon footprint. This provides several advantages and challenges for the hydraulic system. The low efficiency of conventional hydraulic systems is no longer acceptable due to the volume and cost of batteries. READ MORE