Labs at Vehicular systemsVehicular systems currently has two main laboratories, the Engine lab and the Vehicle Lab.
The Vehicle Lab is in fact a complete building, L-huset (the L-building), which is a new building at LiU, incorporating three laboratories for vehicle related research; The Laboratory for Vehicle Propulsion, The Laboratory for Vehicle Informatics and The Laboratory for Energy Conversion and Energy Storage.
Engine testing possibilities
We have two engine test stands suited for testing passenger
car engines. Both test stands are equipped with modern asynchronous machines
which can act both as a drive and a load to the engines.
These test stands gives us the possibility to run both steady state and dynamic tests, with torque rise-times less than 10 ms. We are able to do road load simulations.
After a small fire in year 2001 both the old asynchronous machines were replaced whith new ones. The new dynamometers are also asynchronous machines deliverd from Schenck and has a braking capability of 250 kW (~340 hp) and a rated torque of 480 Nm.
|Test stand 1 and 2|
|Type||Schenck Dynas3 LI 250|
|Maximum Speed [rpm]||10 000|
|Rated Torque [Nm]||480|
For measuring purposes we have a data acquisition system consisting of
a VXI mainframe and a PC. The VXI mainframe is fitted with a fast 8 channel
digitizer + DSP capable of anti-alias protected sampling up to 196 kHz/ch
and a slower module more suited for stationary measurement of up to 64
channels of combined voltage, temperature, current and frequency
The slower module is also capable of closed loop control. All VXI components
are delivered by Hewlett-Packard.
Most of our measurements concern in-cylinder pressure, ion-current, charger/manifold pressure and temperature, engine speed and torque, lambda, turbo charger speed etc.
By connecting the measurement system to the dynamometer and letting the measurement system control the behavior of the dynamometer we do automatic engine mapping and cycle tests.
Informationsansvarig: Per Öberg
Senast uppdaterad: 2012-12-14