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2. 发明申请

WO1997022787A1 THROTTLE VALVE CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：用于内燃机的节流阀控制装置
公开(公告)号：WO1997022787A1
公开(公告)日：1997-06-26
申请号：PCT/JP1996002375
申请日：1996-08-26
申请人： HITACHI, LTD. , NISHIMURA, Mitsunori , ADACHI, Hidefumi , HASHIMOTO, Yoshikatu
发明人： HITACHI, LTD.
IPC分类号： F02D09/10
CPC分类号： F02D9/10 , F02D9/104 , F02D11/10
摘要： A throttle valve control device for an internal combustion engine characterized in that a throttle valve is rotatably mounted on a throttle body via throttle shaft, that the configuration of a bore in the inner surface of the throttle body is a straight bore type in which the centre of rotation of the throttle valve is located on the centre line of the throttle body, that a spherically surfaced internal profile portion is provided in an idle control area which is in the vicinity of the fully closed angle of the throttle valve, that a spherically surfaced internal profile portion is further provided as an area continuing from the sphrically surfaced internal profile, that provided as an area continuing from the spherically surfaced internal profile is an area comprising a compound surface profile comprising in turn a spherical surface and a cylindrical surface substantially parallel to a flow of air or an area comprising a conical surface profile, and that the centre of the spherically surfaced profiles is on the centre line of the bore and vertically offset, whereby a gap between the spherical surface profile and the throttle valve increases as the opening of the throttle valve increases. When applied to an electronically controlled throttle valve control device, the device is designed such that an engine rotational speed changes 20 rpm for each incremental throttle valve opening of 0.10 in a low throttle valve opening area, thereby eliminating an idle control by an ISC valve.
摘要翻译：一种用于内燃机的节流阀控制装置，其特征在于，节气门通过节流轴可旋转地安装在节气门体上，节气门体内表面中的孔的构型是直孔型，其中中心节流阀的旋转位于节气门体的中心线上，在与节气门完全闭合的角度附近的怠速控制区域内设置有球面状的内部轮廓部分，球形表面内部轮廓部分还被设置为从表面纹理的内部轮廓延伸的区域，其提供为从球形表面的内部轮廓延伸的区域是包括复合表面轮廓的区域，该区域又包括球形表面和基本上平行于空气流或包括锥形表面轮廓的区域，以及球形的中心表面轮廓在孔的中心线上并且垂直偏移，由此球形表面轮廓和节流阀之间的间隙随着节流阀的打开而增加。当应用于电子控制的节流阀控制装置时，该装置被设计成使得在低节气门开口面积上的每个增量节气门开度为0.10的发动机转速改变20rpm，由此消除由ISC阀的空转控制。

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