Applications of net-shape molded carbon-carbon composites in IC engines

Unique thermal and mechanical properties of carbon-carbon (C-C) composites make them suitable for internal combustion (IC) engine applications. However, the current high manufacturing cost of C-C composites greatly limits their commercial applications. Recent advances in C-C composites manufacturing technologies offer a potentially low cost ($50/lb) material. Thus, forming technologies become the critical factor controlling the application of low cost C-C composites in IC engines. This paper demonstrates the feasibility of using low-cost, molded C-C composites in spark ignition engine applications such as pistons and valves. Problem areas in IC applications of C-C composites are addressed together with a cost estimate to produce C-C pistons at high volume.