Innovation in Fluid Power - RWTH Aachen · PDF fileIFAS – Innovation in Fluid Power 2 of 32 Englisch RWTH Aachen University – Facts and Figures Established in 1870 9 faculties,

Innovation in Fluid Power

Institute for Fluid Power Drives and Controls

Institut für fluidtechnische Antriebe und Steuerungen

2 of 32 IFAS – Innovation in Fluid Power

Englisch

RWTH Aachen University – Facts and Figures

Established in 1870

9 faculties, 260 institutes (55 in mech. engineering)

9,191 employees (538 professors)

42,298 students (12,050 in mech. engineering)

Budget: 839.5 Mio. €


Englisch


Testing facilities of 1300 m² including:

- More than 50 test rigs for hydraulic and

pneumatic components

- 6 machine beds on isolated foundation

- 5 isolated test chambers with machine beds

- Anechoic room on isolated foundation,

6.5 × 8 m², 90/200 kW with energy recovery

- Climatic test chamber measuring

4.7 × 3.5 × 3 m³, -70 °C to +70 °C,

- Test rigs for ageing of hydraulic

fluids and components

25 scientific staff members working in

various fields of fluid power applications

Qualification of young post graduate

engineers, students and apprentices

Competence in simulation and special test

equipment for hydrostatic machines


Englisch


Testing facilities of 1300 m² including:

- More than 50 test rigs for hydraulic and

pneumatic components

- 6 machine beds on isolated foundation

- 5 isolated test chambers with machine beds

- Anechoic room on isolated foundation,

6.5 × 8 m, 90/200 kW with energy recovery

- Climatic test chamber measuring

4.7 × 3.5 × 3 m, -70 °C to +70 °C,

- Test rigs for ageing of hydraulic

fluids and components

22 scientific staff members working in

various fields of fluid power applications

Qualification of young post graduate

engineers, students and apprentices

Competence in simulation and special test

equipment for hydrostatic machines

Technology Transfer

Lectures and courses

- Fundamentals of Fluid Power

- Servohydraulics

- Fluid power technology for mobile application

- Simulation of Fluid Power Systems

- Lubricants and pressure media

- Design of fluid power machines and

components

Conferences

- Industrial conferences

- International conference on Fluid Power


Englisch

Personnel Structure

Aug 2015

25 22 Technic-administrative departments Research groups


Englisch

Budget


Englisch

References


Englisch

Research Groups


Englisch

Tribology and Fluid Analysis

Main research

Investigation and determination of

fluid properties and fluid ageing

Excellence cluster TMFB

(Tailor-Made Fuels from Biomass)

Sealing technology

Equipment:

Surface measuring room, oil laboratory

Software:

ANSYS, COSMO-RS, FIRST,

in-house developed tribosimulation tools


Englisch


Prediction of oil ageing

based on a mathematical

description

Viscosity,

acid number,

water content,

particle content,

pourpoint,

foaming characteristics

…

Main research





Sealing technology


Englisch


Investigation of viscosity

and lubricity of fuels

Measurement of

temperature- and

pressure-dependent

viscosity

Molecular description of

viscosity and lubricity

Main research





Sealing technology


Englisch


Main research





Sealing technology

Friction measurement

at high velocity

Immersion tests to determine

chemical interactions between

fluid and sealing material


Englisch

Pump and Motor Technology

Optimization of hydrostatic

machines

Fundamental investigations using

simulation tools

Hydrostatic transmission

for wind energy application

Current fields of research

Equipment

- Test facilities for component tests of hydraulic pumps

- Measurement technology designed for hydraulic

applications

Software

- Ansys, MSC Adams, DSHplus, PumpLinx

- In-house developed simulation tools


Englisch


Simulation of the

lubricating film

focused on piston-

bushing contact

CFD-simulation of flow

channels of axial piston

machines

Simulation of the

commutation of pumps

using DSHplus

0 30 60 90 120 150 180 210 240 270 300 330 360

Drehwinkel Außenrad [°]

05

101520253035404550556065707580859095

100

Dru

ck

[b

ar]

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

Flä

ch

e

[mm

²]

0

250

500

750

1000

1250

1500

1750

Vo

lum

en

[m

m³]

Druck HD2Druck HD1ZellendruckA NDA HD1A HD2V Zelle

Druckverläufe bei n=2000 min-1, Kennfeld: boc0118f

Maximaler Zellendruck: 627.14 bar

Druckschwankungsamplitude HD1: 2.15 bar

Druckschwankungsamplitude HD2: 23.87 bar


machines


simulation tools





Englisch


generator 1

generator 2


machines


simulation tools





Englisch


Axial piston pump with

coated pistons

(Collaborative Research

Centre 442)

“Radax” – novel design

approach for radial piston

machines

Investigation of

churning losses in

axial piston machines

using CFD


machines


simulation tools





Englisch

System and Control Technology

Approach

Analysis and optimisation

Efficient and compact

systems

Condition monitoring


Englisch

Gang 1

Zu

gkra

ft F

Zu

g

Gang 2 Gang 3

G 1 G 2 Gang 3 Gang 4

gear 1 gear 2 gear 3

g 1 g 2 gear 3 gear 4

Velocity v T

ractio

n F

tra

c

ge

ar

eff

icie

ncy

Tra

ctio

n F

tra

c

Velocity v Velocity v

Velocity v

Tra

ctio

n F

tra

c

Tra

ctio

n F

tra

c


Approach



systems



Englisch


Self energising electro hydraulic brake

Optimisation of

controller and design

Validation of simulation

results on test bench

Improvement of hydrostatic

transmissions for ocean energy

Approach



systems



Englisch


master

display error

diagnosis

control

other

devices

actuator valve spool drive

measure-

ment data

formatting interpretation HMI sensors

temperature

humidity

permittivity

conductivity

viscosity

particle number

rule base

training data

state definitions

Approach



systems



Englisch

Valves and Mechatronics

Main research

Valve development for

circuit breaker drives

Short-time ageing test

for hydraulic valves

Equipment

- Valve test rig

- Ageing test rig

Equipment

- Ansys CFX, ICEM CFD, Flux 3, DSHplus

Actuation Flow resistance

Electro mechanics

Fluid mechanics

Flow forces

Mechanics

Valves & Mechatronics


Englisch


Main research





Valve development

Leakage investigation


Englisch

Stirrer

Particle reservoir

Heat exchanger

Membrane pump

Filters

Main reservoir

Valve manifold

Flow sensors

Main pump


Main research





Wear dependent

flow rate changes


Englisch

Pneumatics

Main research

Servopneumatic

Aachen-IFAS-Hand

Analytic determination of

pneumatic seal friction

Handling devices

Equipment

- Pneumatic laboratory

- Flow measurement test rig

- Rapid characterization of pneumatic components


Englisch

Pneumatics

Main research

Servopneumatic Aachen-IFAS-Hand:

Electromagnetic commutation valve



Handling devices

Functional principle

Magnetic simulation

Prototype testing

Target application


Englisch

Pneumatics

Main research

Servopneumatic

Aachen-IFAS-Hand



Handling devices

Friction law

System

simulation

Characteristic

diagrams /

Correlations

Real system

Test rig /

Simulation


Englisch

Pneumatics

Main research

Servopneumatic

Aachen-IFAS-Hand



Handling devices

S. Gorb, MPI for Metal

Research, Stuttgart


Englisch

Non-profit association for the advancement of fluid power technology

Technology transfer (e.g. organization of conferences)

Promotion of students (e.g. study trips to companies)

Promotion of research (e.g. purchase of equipment)

Technical literature

275 members (41 company members)


Englisch








Englisch








Englisch







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Innovation in Fluid Power - RWTH Aachen · PDF fileIFAS – Innovation in Fluid Power 2 of 32 Englisch RWTH Aachen University – Facts and Figures Established in 1870 9 faculties,