Abstract:
An apparatus (100) includes a first component (102) having a first surface (106) and a second component (104) having a second surface (110). The first surface includes sputtered gold, and the second surface includes a stainless steel alloy. The first surface is configured to contact the second surface, and one of the components is configured to move against another of the components. The stainless steel alloy could consist of a UNS 21800/AISI Type S21800 metal. The sputtered gold could include ion sputtered gold, and the sputtered gold could have a thickness of about 1 micron. The first component could include a first blade (306) of an adjustable aperture mechanism, where the adjustable aperture mechanism also includes a second blade (308). The second component could include a first plate (310) of the adjustable aperture mechanism, where the adjustable aperture mechanism further includes a second plate (312). The blades can be configured to move within a space between the plates.
Abstract:
A piston for a diesel internal combustion engine including a crown portion at least partially formed of steel and having a combustion surface with a combustion bowl formed therein is provided. The combustion bowl presents a combustion bowl rim area, and a coating including at least one of a noble metal and a refractory metal is applied to substantially only the combustion bowl rim area. The coating is preferably applied in the areas of the combustion bowl rim area that are in line with the sprays of diesel fuel when the piston is in a top dead center position during operation of the engine.
Abstract:
적어도 부분적으로 강으로 형성되어 있되 그 내부에 형성되어 있는 연소통을 가진 연소 표면을 가지고 있는 크라운부를 포함하는, 디젤 내연 기관용 피스톤이 제공된다. 연소통은 연소통 림 영역이 존재하고, 귀금속과 내화 금속 중 적어도 하나를 포함하는 코팅물질은 실질적으로 연소통 림 영역에만 도포된다. 코팅물질은 바람직하게는, 피스톤이 엔진의 작동 동안 상사점 위치에 있을 때 디젤 연료의 분무와 일직선을 이루고 있는 연소통 림 영역으로 된 영역에 도포된다.