Engine materials.

Status and Prognosis for Alternative Engine Materials

The purpose of this paper is to review the current state of research and development of new materials for advanced aircraft engines. The advantages and disadvantages of intermetal1ic compounds and refractory metals as replacements for today's nickel-base alloys are discussed, along with some results of research directed at overcoming some of the problems which restrict their application. It is ...

Effects of Additive Materials on Engine Performance and Parts in a Diesel Engine

In this study; metanol-diesel fuel, organometal MnO2 fuels were used to improve the properties of diesel fuel. Besides, the effect of methanol fuel on engine oil was also examined experimentally in a four cylinder, direct injection diesel engine running at 200 bar. Three different diesel fuels were prepared by adding 5, 10 and 15% methanol into diesel fuel. In order to prevent phase separation ...

Durability Challenges for Next Generation of Gas Turbine Engine Materials

Aggressive fuel burn and carbon dioxide emission reduction goals for future gas turbine engines will require higher overall pressure ratio, and a significant increase in turbine inlet temperature. These goals can be achieved by increasing temperature capability of turbine engine hot section materials and decreasing weight of fan section of the engine. NASA is currently developing several advanc...

Understanding Materials Uncertainty for Prognosis of Advanced Turbine Engine Materials (preprint)

Evaluation of Gasoline Engine Piston with Various Coating Materials Using Finite Element Method

The purpose of this paper is to examine the piston stress distribution using several thicknesses of the coating materials to achieve higher gasoline engine performance. First of all, finite element structure analysis is used to uncoated petrol piston made of aluminum alloy. Then, steel and cast iron piston materials are conducted and compared with the aluminum piston. After that, investigation ...