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    • 82. 发明申请
    • IN-CYLINDER PRESSURE DETECTING DEVICE OF DIRECT INJECTION TYPE INTERNAL COMBUSTION ENGINE
    • 直列式内燃机缸内压力检测装置
    • US20140048041A1
    • 2014-02-20
    • US13985143
    • 2012-02-20
    • Shusuke AkazakiYuji YamamotoToshitaka HachiroGaku Sato
    • Shusuke AkazakiYuji YamamotoToshitaka HachiroGaku Sato
    • F02M69/00
    • F02M69/00F02B23/104F02B2075/125F02D35/023F02M57/005F02M61/14F02M2200/247G01L23/10Y02T10/123Y02T10/125
    • An in-cylinder pressure detecting device of a direct injection type internal combustion engine is provided in which a ring-shaped pressure detection element (34) surrounding a fuel injection hole (33b) is provided in the vicinity of an extremity of an injector (20) that injects fuel into a combustion chamber. Since the pressure detection element is provided on the injector, not only is it unnecessary to change the shape or structure of the cylinder head or the combustion chamber in order to provide the pressure detection element, but it is also possible to cool the pressure detection element (34) by fuel passing through the inside of the injector to thus enhance the precision of pressure detection and the durability. Further, since the ring-shaped pressure detection element (34) surrounds the periphery of the fuel injection hole (33b), it is possible to maximize the dimensions of the pressure detection element (34) to thus further enhance the precision of pressure detection while avoiding interference between the pressure detection element (34) and fuel injected via the fuel injection hole (33b).
    • 提供一种直喷式内燃机的缸内压力检测装置,其中,在喷射器(20)的末端附近设置围绕燃料喷射孔(33b)的环状压力检测元件(34) )将燃料喷射到燃烧室中。 由于压力检测元件设置在喷射器上,为了提供压力检测元件,不仅不需要改变气缸盖或燃烧室的形状或结构,而且还可以将压力检测元件 (34)通过喷射器内部的燃料,从而提高压力检测的精度和耐久性。 此外,由于环状压力检测元件34围绕燃料喷射孔33b的周围,所以能够使压力检测元件34的尺寸最大化,能够进一步提高压力检测的精度, 避免压力检测元件(34)与经由燃料喷射孔(33b)喷射的燃料之间的干扰。