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    • 7. 发明申请
    • ENCAPSULATED HEATING FILAMENT FOR GLOW PLUG
    • 封闭式加热灯
    • WO1991018244A1
    • 1991-11-28
    • PCT/US1990004751
    • 1990-08-23
    • CATERPILLAR INC.
    • CATERPILLAR INC.BAILEY, John, M.TOWE, Carey, A.SHAFER, Scott, F.BLANCO, Michael, M.
    • F23Q07/00
    • F23Q7/001
    • The service life of conventional glow plugs is extremely short when they are continuously energized at an elevated temperature during engine operation in order to assist ignition of non-autoignitable fuels. Such glow plugs typically fail due to thermal stresses and/or oxidation and corrosion. Herein is disclosed an improved heating element assembly (10, 10', 10'') adapted for incorporation in a glow plug. The heating element assembly (10, 10', 10'') includes a monolithic sheath (24) having a relatively-thin and generally annular wall (30) defining a blind bore (34). The heating element assembly (10) further includes a heating device (26, 26', 26'') positioned in the blind bore (34) and adapted to emit heat, and a heat transfer device (28) adapted to transfer heat from the heating means (26) to the sheath (24). The heating device includes a heating filament (42, 42') and a ceramic insulator (40, 40', 40''). The heating filament (42, 42') is protected against oxidation by being encapsulated in the insulator (40, 40', 40''). The insulator is protected against corrosion by being encapsulated in the sheath (24). The sheath (24) is formed of a preselected material which is chosen and configured so as to minimize failure of the heating element assembly (10, 10', 10'') caused by thermal stresses, oxidation and/or corrosion.
    • 10. 发明申请
    • SHEATHED ELEMENT GLOW PLUG
    • 电热塞
    • WO1998004870A1
    • 1998-02-05
    • PCT/DE1997001241
    • 1997-06-18
    • ROBERT BOSCH GMBHLOCHER, JohannesTESCHNER, WernerNISSEN, Jörg-Chr.
    • ROBERT BOSCH GMBH
    • F23Q07/00
    • F23Q7/001D03D47/267F23Q2007/004
    • The invention relates to a sheathed element glow plug for arrangement in the combustion chamber of an air-compression internal combustion engine with a plug shell, a connection member for the glow current and with a tube fastened to said plug shell and closed at the end thereof facing away from the plug shell. A wire filament arrangement embedded in insulating material is positioned in the tube part used as the glow element and projecting from the plug shell. The plug shell (11) comprises two sections and, depending on the desired overall length of the sheathed element glow plug, an intermediate member (23) of selectable length is provided which connects a first part (21) and a second part (22) of the plug shell (11) with each other.
    • 电热塞用于与插头壳体内的空气压缩内燃机的燃烧室结构中,与具有连接到其在​​其端部从所述插头壳体端关闭远程管中的插头外壳的辉光电流的连接元件,和。 在其中突出于插头壳体的,作为嵌入在绝缘材料导线线圈装置被布置在管的电热塞的一部分。 插头壳体(11)在两片拷贝制成,这取决于电热塞的所希望的总长度,可选择的长度的中间片(23)被提供,其连接的第一部分(21)和所述插头壳体(11)彼此的第二部分(22)。