Using Gasoline Properties to Predict CCD Performance

In a series of bench engine, road simulation dynamometer and on-road fleet tests various single fuel parameters have been examined to check their efficacy as potential predictors of CCD. Parameters included TGA residue, unwashed gum, T95, sulfur, PNA, and aromatics. The tests show that no fuel parameter acts as a good predictor of CCD thickness (maximum or mean) and that more complex physical-chemical models are required.