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Engine Oil Consumption Measurements




                                                                           Contact Information
Increased demands for environmentally friendly engines, through
                                                                           MAHLE Powertrain, LLC
reduced emissions, has become a key driver for engine
                                                                           Novi, MI 48375
manufacturers worldwide.             As a result, the requirement for
                                                                           powertrain@us.mahle.com
optimized engine lube oil consumption is a key factor in achieving
                                                                           (248) 473-6600
this goal.      In order for this to occur, the need for accurate
measurement of engine oil consumption exists.                MAHLE has
developed        three        advanced,   analytical   oil   consumption
measurement systems that either utilize tracer elements within
the lube oil or directly detect the lube oil molecules.           These
systems include the Radiometric, the Sulfur Trace, and the Mass
Spectrometer.




MAHLE Product Information 06/2009                                                                    1
©MAHLE Powertrain LLC, 2009
Engine Oil Consumption Measurements

Key Features                                               Sulfur Trace System
Radiometric System                                           Real time measurement
  Repeatability & Reproducibility (R&R) rating of            Overall, breather and turbo measurements
  “excellent” and low Coefficient of Variance (CofV)         Transient cycle influence diagnostics
  Proven field correlation
  System analysis of overall, breather, valve stem seal,
  turbo and power cylinder influence measurements
  Steady state, transient and break-in operation
  measurements
  Customer specified components, fuels and oils




                                                           Technical Data
                                                           Radiometric System
                                                           Tracer Element:            Tritium (H3)
                                                           Response Time:            3 - 5 minutes
                                                           Fundamental Basis:         Mass flow rate of hydrogen
                                                           Detection Limit:          < 0.1 grams / hour
Mass Spectrometer                                          Actual Measurement:        Counts/minute of radioactivity
  No tracer necessary
                                                           Sulfur Trace System
  Steady state and transient operation measurements
                                                           Tracer Element:            Sulfur dioxide (SO2)
  High dynamic real time measurement
                                                           Response Time:            1 second
  Cylinder selective measurements
                                                           Fundamental Basis:         Mass flow rate of sulfur
  Fast engine mapping possible
                                                           Detection Limit:          1.0 grams / hour (gasoline)
  Detection of operating parameter influence
                                                                                     3.0 grams /hour (diesel)
  Customer specified components, fuels and oils
                                                           Actual Measurement:        PPM sulfur dioxide

                                                           Mass Spectrometer System
                                                           Tracer Element:           None
                                                           Response Time:            < 10 msec
                                                           Fundamental Basis:        Concentration of oil HC
                                                           Detection Limit:          0.2 grams / hour (gasoline)
                                                                                     0.5 grams / hour (diesel)
                                                           Actual Measurement:        Counts per time / crank angle
                                                                                     (°CA) of oil hydrocarbon
                                                                                     molecules


MAHLE Product Information 06/2009                                                                                  2
©MAHLE Powertrain LLC, 2009

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Oil Consumption Testing

  • 1. Engine Oil Consumption Measurements Contact Information Increased demands for environmentally friendly engines, through MAHLE Powertrain, LLC reduced emissions, has become a key driver for engine Novi, MI 48375 manufacturers worldwide. As a result, the requirement for powertrain@us.mahle.com optimized engine lube oil consumption is a key factor in achieving (248) 473-6600 this goal. In order for this to occur, the need for accurate measurement of engine oil consumption exists. MAHLE has developed three advanced, analytical oil consumption measurement systems that either utilize tracer elements within the lube oil or directly detect the lube oil molecules. These systems include the Radiometric, the Sulfur Trace, and the Mass Spectrometer. MAHLE Product Information 06/2009 1 ©MAHLE Powertrain LLC, 2009
  • 2. Engine Oil Consumption Measurements Key Features Sulfur Trace System Radiometric System Real time measurement Repeatability & Reproducibility (R&R) rating of Overall, breather and turbo measurements “excellent” and low Coefficient of Variance (CofV) Transient cycle influence diagnostics Proven field correlation System analysis of overall, breather, valve stem seal, turbo and power cylinder influence measurements Steady state, transient and break-in operation measurements Customer specified components, fuels and oils Technical Data Radiometric System Tracer Element: Tritium (H3) Response Time: 3 - 5 minutes Fundamental Basis: Mass flow rate of hydrogen Detection Limit: < 0.1 grams / hour Mass Spectrometer Actual Measurement: Counts/minute of radioactivity No tracer necessary Sulfur Trace System Steady state and transient operation measurements Tracer Element: Sulfur dioxide (SO2) High dynamic real time measurement Response Time: 1 second Cylinder selective measurements Fundamental Basis: Mass flow rate of sulfur Fast engine mapping possible Detection Limit: 1.0 grams / hour (gasoline) Detection of operating parameter influence 3.0 grams /hour (diesel) Customer specified components, fuels and oils Actual Measurement: PPM sulfur dioxide Mass Spectrometer System Tracer Element: None Response Time: < 10 msec Fundamental Basis: Concentration of oil HC Detection Limit: 0.2 grams / hour (gasoline) 0.5 grams / hour (diesel) Actual Measurement: Counts per time / crank angle (°CA) of oil hydrocarbon molecules MAHLE Product Information 06/2009 2 ©MAHLE Powertrain LLC, 2009