Advanced liquid lubricants for engines

The advancement of new engine technology in the next decade will require the successful development of advanced lubricants. The lubricants are critical to the success of the system. New materials offer the opportunity for better, more efficient engines but the widespread use of these materials depends on a number of factors including durability and emission control technology. The requirements for friction, wear and lubrication increase accordingly with the operating severity of the system. Current research lubricants developed under DOE programs should have the ability to meet the requirements of the advanced engines of the next decade. This presentation describes research on high temperature liquid lubricants conducted at NIST. Development of a significant data base of information and test methodology resulted from this research. Some of the methodology used and evaluations of base stocks, additives, and candidate high temperature liquid lubricants will be discussed. Cooperative efforts with industry resulted in several candidate high temperature liquid lubricants for advanced engine tests.