Contributions to the Development of Oil Consumption / Oil Dilution January 2014
Contents Application Areas Proportion of Oil Consumption Measuring Method Oil Consumption Entire Engine Oil Consumption Components Oil Dilution Measurement February 2014 OilConsumption_OilDilution.ppt Slide 2
Application Areas Oil Consumption Analyses / Separate Analyses of Sub-Assemblies (e.g. Turbo Chargers) Ageing / Fault Simulation on Fuel Injection System Effect of Oil Dilution Ol Oil Dilution /C Consumption using alternative fuels and lubricants Testing of Fuels and Lubricants loaded with Additives February 2014 OilConsumption_OilDilution.ppt Slide 3
Proportion of Oil Consumption Approx. 3/4 of oil consumption ist transmitted by the cylinder wall Turbocharger, ATL, neu new condition 16% Blowby 3% Ventile Valvetrain 0,4% Oil consumption can be overlapped by fuel ingress (cold start, post-injection) Rise of turbocharger oil consumption with increasing mileage Turbocharger, ATL, usedgebraucht 25% Blowby 2% Ventile Valvetrain 0,4% Cylinder Zylinder- wall wand rohr 81% Relative proportion of engine oil consumption Source: FVV-Vorhaben Nr. 748 Zylinderrohr Cylinder wall wand 73% February 2014 OilConsumption_OilDilution.ppt Slide 4
Measuring Method Advantages of Radiotracer Method: Real-time data logging High resolution: consumption measurement > 0.1 g/h dilution measurement > 0.01 %/h Tracer embedded in oil molecules, i.e. no modification to tribological characteristics Contamination-free test sample after test end Oil Consumption Oil Dilution February 2014 OilConsumption_OilDilution.ppt Slide 5
Measuring Method Functional Diagram of Oil Consumption Measurement Exhaust Line DPF + Sensor Engine Lubricant + Tracer Data Logging February 2014 OilConsumption_OilDilution.ppt Slide 6
Oil Consumption / Entire Engine n [g/h] consumption Consumption Oil oil c C rpm 50 1000 1/min 2000 1/min rpm 3000 1/min rpm 40 4000 1/min rpm 30 20 10 0 25% 50% 75% 100% (Load) Total Consumption February 2014 OilConsumption_OilDilution.ppt Slide 7
Oil Consumption / Components Oil Consumption Measurement Turbocharger Exhaust Abgasleitung Line Oil trap + Sensor DPF + Sensor Engine Motor Schmierstoff Lubricant + Tracer + Tracer Datenerfassung Data Logging February 2014 OilConsumption_OilDilution.ppt Slide 8
Oil Consumption / Components Ölverbrauc ch [g/h] oiil O il consumptio Consumpti ion [g/h] 1000 100 10 1 1000 1/min rpm 2000 1/min rpm 3000 1/min rpm 4000 1/min rpm 0 <0,1 <0,1 <0,1 <0,1 <0,1 <0,1 0,3 0,2 2,8 2,9 36,5 124 Partial Teillast Load Full Volllast Load Clogged Luftfilter Air Filter verunreinigt Consumption on Diesel Passenger Car (Turbo Charger) February 2014 OilConsumption_OilDilution.ppt Slide 9
Oil Dilution Measurement Functional Scheme Valve Chamber Lead Shield Parameters of Samples: Volume Flow Rate ~ 1 l/min Chamber Volume ~ 0.3 l Pressure = 3-5 bar Pump Data Logging Sensor Scheme of Oil Dilution Measurement February 2014 OilConsumption_OilDilution.ppt Slide 10
Oil Dilution Measurement Range of Application Optimization of DPF regeneration process Cold start Oil dilution for wear analyses Detection of non-evaporating fuel fractions February 2014 OilConsumption_OilDilution.ppt Slide 11
Oil Dilution Measurement Engine engine_spe Spee ed eed [rpm] [1/min] 6000 240 low load low temperature cycle heat up full load 5000 200 engine_torque 4000 160 engine_speed 3000 oil_temperature 120 2000 coolant_temperature 80 1000 40 0 0 0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 Measuring measure time Time [h] [h] C] Torque [Nm], Temperature [ Nm]; res[ C] torque [ temperatu Engine Cycle for Oil Dilution Measurement (Partial Load following Full Load) February 2014 OilConsumption_OilDilution.ppt Slide 12
Oil Dilution Measurement Oil temperature measurement in D-Lube for density compensation remaining heavier fuel fractions Dilution phase with fuel adding 20 ml/ 10 min Evaporation phase to engine oil pan heat up of engine oil to 132 C Online Graph of Oil Dilution Measurement during Dilution Cycle (Oil Dilution with following Evaporation Phase) February 2014 OilConsumption_OilDilution.ppt Slide 13
Locations Berlin KST Motorenversuch GmbH & Co. KG Bruchstraße 24-32 67098 Bad Dürkheim Germany Telephone: +49 6322-799 0 Fax: +49 6322-799 353 E-Mail: info@kst-motorenversuch.de Internet: http://www.kst-motorenversuch.de Bad Dürkheim GEVA Gesellschaft für Entwicklung und Versuch Adlershof mbh Willy Wolf-Bau Friedrich-Wöhler-Straße 1 12489 Berlin Germany Telephone: +49 30 63 92-74 10 Fax: +49 30 63 92-74 70 E-mail: service@geva-adlershof.de Internet: http://www.geva-adlershof.de de February 2014 OilConsumption_OilDilution.ppt Slide 14
Contact KST Motorenversuch GmbH & Co. KG Bruchstraße 24-32 D-67098 Bad Dürkheim Telefon : +49 6322-799 0 Fax : +49 6322-799 353 E-Mail : info@kst-motorenversuch.de Internet : www.kst-motorenversuch.de Bad Dürkheim February 2014 OilConsumption_OilDilution.ppt Slide 15