Browse Publications Technical Papers 2007-01-1990
2007-07-23

Low Volatility ZDDP Technology: Part 1 - Engines and Lubricant Performance in Field Applications 2007-01-1990

Newly developed, low volatility zinc dialkyldithiophosphate (ZDDP) technology significantly reduces the amounts of volatile phosphorus (P) species while retaining their antiwear protective behavior and antioxidant performances. In the past researchers gathered a variety of engine data supporting the hypothesis that P volatility can have a significant impact on catalytic converter efficiency, but corresponding field performance results were limited.
A recent field trial was conducted with New York City taxi cabs that provided extended sets of engine and drain performance parameters data. This trial compared side-by-side performance of oils formulated with conventional and low volatility ZDDPs. Following completion of the test, the extensive engine inspections and used oil analysis revealed excellent antiwear control and oxidation inhibition with both types of ZDDP technologies. Furthermore, the amount of volatile P produced by novel ZDDP that is capable of interacting and deactivating the three way catalysts was cut in half.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Comparison of the Physical and Chemical Changes Occurring in Oils During Aging in Vehicle and Engine Fuel Economy Tests

982504

View Details

TECHNICAL PAPER

Engine Oil Aging Effects on Fuel Economy as Measured by the EPA FTP Vehicle Dynamometer Test in a GM Engine

2002-01-1635

View Details

TECHNICAL PAPER

Pour Point Depressant Robustness after Severe Use in Passenger Car Engines in the Field and in the Sequence IIIGA Engine

2005-01-2174

View Details

X