Test system for the characterisation of the oil content in blow-by gases at engine test systems
The Blow-By Test System is a compact and precise measurement system designed for the characterization of oil content in blow-by gases from engine test rigs. It combines gravimetric measurement accuracy with the time-resolved capabilities of an optical Process Aerosol Photometer, allowing both oil droplet concentration and oil film/gush detection in pipes or tilt test stands.
Application
(1) Determination of oil content in blow-by gases on engine test stands.
(2) Evaluation of oil mist separators and filtration systems in engines.
(3) On-line monitoring of oil mist aerosol concentrations in crankcase ventilation systems.
(4) Measurement of oil films or gushes in pipes and ducts.
(5) Research and development of engine ventilation and crankcase filtration systems.
(6) Quality assurance and testing of engine blow-by management components.
Standards
Currently, the system aligns with general gravimetric and optical aerosol measurement practices; specific international standards can be applied depending on engine test protocols.
Features
(1) Combines gravimetric and optical aerosol measurement for high accuracy.
(2) Time-resolved measurements allow rapid detection of concentration changes.
(3) Measures full blow-by flow rates up to 300 L/min.
(4) Compensates for differential pressure during gravimetric sampling.
(5) Integration-ready for existing engine test stands.
(6) Capable of detecting oil films and gushes in pipes.
(7) Time-saving and reproducible measurements for laboratory and production testing.
Parameters
| Parameter | Unit | Value |
|---|---|---|
| Compressed air supply | bar | 6 |
| Aerosol flow rate | L/min | max. 300 |
| Measurement principle | – | Gravimetric + Optical Photometry |
| Operating medium | – | Blow-by gas (engine crankcase) |
| System dimensions (W × H × D) | mm | Custom / dependent on integration |
| Weight | kg | Compact design, approx. 100–150 (depending on configuration) |
Test Procedures
(1) Connect the Blow-By Test System to the engine crankcase ventilation outlet.
(2) Activate the gravimetric sampling unit for precise oil mass determination.
(3) Start the Process Aerosol Photometer for time-resolved concentration measurement.
(4) Monitor full flow blow-by up to 300 L/min.
(5) Observe oil films or gushes in pipelines if required.
(6) Record and analyze data using integrated or external software systems.
Maintenance Information
(1) Regularly clean the gravimetric collection filters and sampling lines.
(2) Inspect optical sensors and ensure the photometer’s calibration is up to date.
(3) Verify compressed air supply and flow stability.
(4) Periodically check connections to engine test stand for leaks.
(5) Replace any worn components as recommended by the manufacturer.
FAQ
(1) What is this product?
– A compact test system for measuring oil content in engine blow-by gases.
(2) What is it used for?
– To characterize oil droplet concentration, evaluate oil mist separators, and monitor oil films in engine ventilation systems.
(3) What types of this product exist?
– Configurations combining gravimetric and optical measurement, with options for inline flow or pipe/gush detection.
(4) What industry problems does it solve?
– Provides reproducible, time-resolved oil content measurements for engine development, testing, and quality assurance of crankcase ventilation and filtration systems.
(5) How is it operated?
– Connect to the engine test stand, run gravimetric and optical measurements simultaneously, monitor full blow-by flow, and analyze collected data.
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