Application
Performance test bench for water pumps
Test bench for validating electric coolant pumps in the automotive sector. The system enables the operation of up to six test specimens within a climate chamber and provides the necessary measurement and control technology as well as the supply of electrical power and the temperature-controlled medium.
Compact calibration test stand for volume flow sensors
The structure of the test bench consists, on the one hand, of the temperature chamber and, on the other hand, of the test bench frame arranged directly next to it, in which the fluid temperature control is housed. The measurement technology and the operating station are installed in a 19″ rack on the opposite side.
The conditioned medium is kept in a reservoir that feeds the 6 test specimen strands with 6,000 L/h each at temperatures between -40…+120 °C. Using slide valves in the return line, the flow resistance for the test specimens can be adjusted individually. The volume flow of the test items is measured in the return line with one MID magnetic inductive flow meter per line.
The medium is recooled either via the integrated cryogenic unit or, at higher temperature levels, directly via the building cooling circuit for the most efficient cooling possible.
Measurement data for the control behavior of the water-glycol circuit (-> blue: medium temperature setpoint, -> orange: medium temperature actual value). The setpoints are changed at 3K/min. The auxiliary lines at a distance of 1K show that the control accuracy in the stationary state is significantly below the required +-1K.
Benchmarks:
Medium conditioning system
- Medium water/glycol
- Minimum temperature: -40°C
- Maximum temperature: +120°C
- Temperature change rate for cooling: 3K/min
- Temperature change rate for heating: 3K/min
- Control accuracy: +- 1K stationary
Measurement Parameters
Voltage
Current
Temperature
Flow
Differential pressure across the test specimen
System pressure
DUT communication
- PWM
- LIN
- CAN
Temperature Chamber
- Minimum temperature: -40°C
- Maximum temperature: +140°C
- Temperature change rate for cooling: 3K/min
- Temperature change rate for heating: 3K/min
Our intuitive test bench software allows you to create various temperature profiles and test runs yourself.
New ldf or dbc files can be loaded independently and the test variables can then be used directly in the application. These can, for example, be defined in the sequence editor as manipulated variables for automated tests.
You can find more information about our process editor here:
Safety is the top priority: Our test bench has an extensive safety system including emergency stop and temperature limiters to ensure the protection of the operators and the system.
Benefits
High-Performance Test Stand, Perfectly Tailored to Your Application
Measuring and control technology in every strand
Volume flow, pressure, current, voltage and temperature are recorded separately in each of the six test circuits. There is no need to switch between the individual strands and the test items are permanently measured and monitored.
High level of automation
Our sequencer enables complex test scenarios to be easily translated into automated test sequences to ensure high utilization of the test bench.
Direct integration of LIN and CAN
The test object variables are directly available in our software. Be it as manipulated or monitoring variables or even as measured variables. The test object variables are saved in the same file as all other measured values, which saves the laborious synchronization of separate measurement records.
Precise regulation
Our self-developed servo injection technology also provides exceptionally precise control of the temperature in the water-glycol mixture in this project.
