Zz2

■■ ORIGINAL CONTRACT tZZ2 CONTRACT EXTENSION

FIG. 5. DOE/NASA THICK TBC WORK PLAN

pri-mary purpose for evaluating the ceramic coatings in such an engine is enhanced fuel efficiency which will impact favorably on the import of foreign fuel.

Figure 5 shows the milestone work plan under this contract. It has three primary tasks -- Task 1 is the analysis and design which has been essentially completed: the report I'm giving today is Task 2, which is the bench test work including the coating system development and both the environmental and mechanical testing of the coatings. At the end of Task 2, which we are nearing at the present time, we will reevaluate the design prior to actually coating the engine components. Under Task 3 we will test the components as redesigned in a single cylinder test engine.

Figure 6 shows the commercial version of the single cylinder test engine which Caterpillar designed and which is marketed by Caterpillar. Often this engine is used for oil control testing; however, it makes a low cost engine for evaluating ceramic coatings or other advanced components in diesel engines without going to multicylinder test engines.

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