Blow-By Test System for Gravimetric and Photometric Oil Content Determination

The Blow-By Test Rig BBT 143 is a mobile measuring system for the determination of oil droplet content in the crankcase gases (blow-by) on engine test stands. It combines the accuracy of a gravimetric measurement by the GMS 141 with the dynamics of an optical concentration measurement by the aerosol photometers PAP 610 and PAP 612, and it allows effective and time-saving recording of oil consumption values of complete engine maps. For an optional pressure compensation, a blower is available which is capable of compensating the differential pressure across the measuring system (e. g. in filter measurements) compared to a pipe guidance without measuring devices. Additionally, the compact photometer PAP 612 offers the possibility of detecting oil films in tubes and gushes of oil, for example, in swivel test rigs.
 
Features
◆ Time-saving and reproducible determination of oil content in blow-by gases in a wide concentration range
◆ Integration in engine test stands (CAN)
◆ Measurement in the full flow of the blow-by (up to 300 l/min), possible bypass flow measurements at large blow-by volume flow rates)
◆ Compensation of the differential pressure of the filter measurement
◆ Heated measuring chamber of the GMS 141 and the PAP 610 to avoid condensation
◆ High temporal resolution photometric measurements in aerosols of two different wavelengths
◆ Easy to use and quick commissioning
 
Features
 Determination of oil content in blow-by on the engine test stand
Evaluation of oil mist separators on the engine test stand
On-line concentration monitoring of oil mist aerosols