Evaluation of Effectiveness of PTFE (Polytetrafluoroethylene) Type Friction Reducers on Reducing Friction and Wear

摘要

Friction reducer containing colloidal polytetrafluoroethylene (PTFE) is one of the new lubricating materials recently developed abroad for automobile engines. This paper mainly reports: (1) the effectiveness of friction reducers (three American products and one Chinese product) on the anti-friction and fuel-saving of Chinese multi-cylinder gasoline engines; and (2) the effectiveness of these friction reducers on the anti-wear of Chinese gasoline engines. The evaluations were conducted in Beijing, Shanghai, and Guangdong with identical test procedures. Results obtained from various methods at various places provide a better basis for correlation. These results prove that friction reducers are effective in reducing friction and wear, when applied to Chinese gasoline engines. It was found that the fuel consumption at a constant speed decreased about 4%, the fuel consumption during 100 km operation decreased about 3% and the wear of engine cylinder decreased about 10% to 40%.