Development of an Engine-Based Catalytic Converter Poisoning Test to Assess the Impact of Volatile ZDDP Decomposition Products from Passenger Car Engine Oils 2007-01-4079
An engine test has been developed to assess the impact of volatile phosphorus from passenger car engine oils on catalytic converter efficiency. The ten-day, steady-state, catalyst aging test was established to promote the production and consumption of volatile phosphorus species contained in crankcase vapors that are evacuated and combusted via the PCV system. A system for sampling, analyzing and identifying crankcase vapors led to a greater understanding of the phosphorus-based poisoning mechanism. Catalytic converter conversion efficiency was assessed through an engine-based system that swept catalyst inlet temperature from low to high while using a constant flow of controlled exhaust gas. The test results indicate correct ranking of field-tested oils that have catalyst poisoning data.
Citation: Guinther, G. and Danner, M., "Development of an Engine-Based Catalytic Converter Poisoning Test to Assess the Impact of Volatile ZDDP Decomposition Products from Passenger Car Engine Oils," SAE Technical Paper 2007-01-4079, 2007, https://doi.org/10.4271/2007-01-4079. Download Citation
Gregory H. Guinther, Michael M. Danner
Afton Chemical Corporation
Powertrain & Fluid Systems Conference and Exhibition
SAE 2007 Transactions Journal of Fuels and Lubricants-V116-4