Valvetrain drive stretch compensation for camshaft to crankshaft correlation
    1.
    发明授权
    Valvetrain drive stretch compensation for camshaft to crankshaft correlation 有权
    齿轮传动拉伸补偿凸轮轴与曲轴相关

    公开(公告)号:US07519465B2

    公开(公告)日:2009-04-14

    申请号:US11940693

    申请日:2007-11-15

    IPC分类号: G01P3/481 G06F19/00

    CPC分类号: F02D41/009

    摘要: A method of correlating a rotational position of a crankshaft to a rotational position of a camshaft includes determining a stretch value of a timing connection, which drivingly couples the crankshaft and the camshaft, and calculating a crankshaft to camshaft rotational position value indicative of the rotational position of the crankshaft with respect to the rotational position of the camshaft. The crankshaft to camshaft rotational position value is compensated based on the stretch value to provide a compensated crankshaft to camshaft rotational position value and whether the rotational position of the crankshaft correlates to the rotational position of the camshaft is determined based on the compensated crankshaft to camshaft rotational position value.

    摘要翻译: 将曲轴的旋转位置与凸轮轴的旋转位置相关联的方法包括确定驱动地连接曲轴和凸轮轴的定时连接的拉伸值,以及计算曲轴至表示旋转位置的凸轮轴转动位置值 相对于凸轮轴的旋转位置。 基于拉伸值来补偿曲轴到凸轮轴旋转位置值,以将凸轮轴转动位置值提供经补偿的曲轴,以及曲轴的转动位置是否与凸轮轴的旋转位置相关,基于经补偿的曲轴到凸轮轴转动 位置值。

    VALVETRAIN DRIVE STRETCH COMPENSATION FOR CAMSHAFT TO CRANKSHAFT CORRELATION
    2.
    发明申请
    VALVETRAIN DRIVE STRETCH COMPENSATION FOR CAMSHAFT TO CRANKSHAFT CORRELATION 有权
    VALVETRAIN驱动力补偿用于CAMSHAFT至CRANKSHAFT相关

    公开(公告)号:US20090030586A1

    公开(公告)日:2009-01-29

    申请号:US11940693

    申请日:2007-11-15

    IPC分类号: F02D13/02

    CPC分类号: F02D41/009

    摘要: A method of correlating a rotational position of a crankshaft to a rotational position of a camshaft includes determining a stretch value of a timing connection, which drivingly couples the crankshaft and the camshaft, and calculating a crankshaft to camshaft rotational position value indicative of the rotational position of the crankshaft with respect to the rotational position of the camshaft. The crankshaft to camshaft rotational position value is compensated based on the stretch value to provide a compensated crankshaft to camshaft rotational position value and whether the rotational position of the crankshaft correlates to the rotational position of the camshaft is determined based on the compensated crankshaft to camshaft rotational position value.

    摘要翻译: 将曲轴的旋转位置与凸轮轴的旋转位置相关联的方法包括确定驱动地连接曲轴和凸轮轴的定时连接的拉伸值,以及计算曲轴至表示旋转位置的凸轮轴转动位置值 相对于凸轮轴的旋转位置。 基于拉伸值来补偿曲轴到凸轮轴旋转位置值,以将凸轮轴转动位置值提供经补偿的曲轴,以及曲轴的转动位置是否与凸轮轴的旋转位置相关,基于经补偿的曲轴到凸轮轴转动 位置值。

    Variable intake manifold with trimode resonance tuning control valve
    3.
    发明授权
    Variable intake manifold with trimode resonance tuning control valve 失效
    可变进气歧管与三分谐振调谐控制阀

    公开(公告)号:US06955149B1

    公开(公告)日:2005-10-18

    申请号:US10911889

    申请日:2004-08-05

    IPC分类号: F02B27/02 F02D9/10 F02M35/10

    摘要: A simplified variable intake manifold is disclosed for use with an internal combustion engine. The manifold utilizes a single valve actuator to vary the resonant frequency of a pair of plenums. The two plenums are joined by first and second communication passages of differing lengths connected to provide cross flow between two plenums. Each plenum has an inlet for receiving intake air from a throttle body and a group of runners adapted for connection with a like group of engine cylinders to direct inlet air from the plenums to combustion chambers of the cylinders. A control valve having an elongated shaft extends through the first and second communication passages and includes separate blades rotatable with the shaft to open or close the passages to provide at least three modes of tuning of the plenums. A stepper motor or other suitable device acts upon the shaft to rotate the blades within the communication passages.

    摘要翻译: 公开了一种与内燃机一起使用的简化的可变进气歧管。 歧管利用单个阀致动器来改变一对增压室的共振频率。 两个增压室通过不同长度的第一和第二连通通道连接,以在两个通气室之间提供横流。 每个气室具有用于接收来自节气门体的进气的入口和适于与相同组的发动机气缸连接的一组流道,以将来自气室的入口空气引导到气缸的燃烧室。 具有细长轴的控制阀延伸穿过第一和第二连通通道,并且包括可与轴一起旋转的独立叶片以打开或关闭通道,从而提供至少三种调压方式。 步进电机或其他合适的装置作用在轴上以使连接通道内的叶片旋转。

    Method for determining air mass in a crankcase scavenged two-stroke
engine
    4.
    发明授权
    Method for determining air mass in a crankcase scavenged two-stroke engine 失效
    确定曲轴箱清扫二冲程发动机空气质量的方法

    公开(公告)号:US4995258A

    公开(公告)日:1991-02-26

    申请号:US514997

    申请日:1990-04-26

    申请人: Richard M. Frank

    发明人: Richard M. Frank

    摘要: A method is described for determining the cylinder mass of air available for combustion in a crankcase scavenged, two-cycle engine, based upon the Ideal Gas Law relationship and indications of pressure, volume, and temperature of air in the crankcase chamber, at predetermined points in the engine operating cycle. This is achieved by first determining the mass of air trapped and compressed in a crankcase chamber, and thereafter, determining the residual air mass remaining in the crankcase after the transfer of air to the associated combustion chamber. Then, the actual air mass transferred to the combustion chamber is determined as a function of the difference between the trapped and residual air masses. Engine trapping efficiency can be used to correct for air leakage from the combustion chamber prior to cylinder exhaust port closure. The volume of the air within the crankcase chamber is derived as a function of engine cycle position, with crankcase air temperature being derived as a function of intake air temperature. Air pressure in the crankcase is monitored with a pressure transducer.