Search Results

In response to new customer needs in recent years, development efforts related to car engines are now being directed toward higher loads, speeds and output through the adoption of turbo chargers and other types of superchargers. Requirements for a lower Emission (EM) and better fuel Economy (FE) must also be satisfied in order to cope with the environmental problems such as the greenhouse effect and acid rain. Under such circumstances where so many factors must be taken into consideration, pistons, which are a central component of car engines, must have higher performance. They must also be lightweight and have low friction to produce a high FE, which should be much improved over that in a conventional design. Thus, it seems that research and development on pistons has become increasingly complicated, sophisticated and time-consuming.