1 / 8

Phosphorus Volatility in GF4 Engine Tests: Summary and Recommendations

This presentation discusses the assessment of phosphorus volatility in GF4 engine tests, emphasizing the importance of understanding absolute P levels, Ca levels, and loss of base oil volatiles. Recommendations for efficient data utilization are provided. Variations in ZDDP additives and their impact on P volatility and antiwear performance are highlighted based on recent OEM data.

tyanne
Download Presentation

Phosphorus Volatility in GF4 Engine Tests: Summary and Recommendations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Phosphorus Volatility inGF4 Engine Tests Presentation for ASTM ESCITMay 4, 2006

  2. Absolute P Levels

  3. Absolute Ca Levels

  4. Loss of Baseoil Volatiles

  5. Phosphorus, Adjusted for Baseoil Loss

  6. Bulk Oil Temperatures

  7. Phosphorus VolatilitySummary and Recommendations • Can be determined using conventional UOA • Sequence VIB appears to show “reasonable” scale • Possibilities for “multitasking” of a GF5 engine test to also yield measures of P volatility should be investigated • Analogous to IIIGA and T10A • Not as an extra P/F criterion • Goal is efficient utilization of data

  8. Another Important Point • There are substantial differences among ZDDP additives, both for P volatility and for antiwear performances • Recent OEM data compare a “Conventional” ZDDP versus a “Low Impact” ZDDP • Meaning of these terms are unclear • May be relevant to a single additive supplier

More Related