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1. 发明申请

US20090064977A1 METHOD TO DETERMINE AN ALCOHOL CONTENT 审中-公开
标题翻译：确定酒精含量的方法
公开(公告)号：US20090064977A1
公开(公告)日：2009-03-12
申请号：US12114241
申请日：2008-05-02
申请人： Oliver MIERSCH-WIEMERS , Georg Mallebrein , Stephan Uhl , Juergen Pfeiffer
发明人： Oliver MIERSCH-WIEMERS , Georg Mallebrein , Stephan Uhl , Juergen Pfeiffer
IPC分类号： F02D41/14 , G01N33/22
CPC分类号： F02D41/0025 , F02D19/0628 , F02D19/084 , F02D19/088 , F02D41/1438 , F02D2200/0612 , F02M55/025 , F02M63/029 , F02M2200/28 , Y02T10/36
摘要： The invention relates to a method to determine an alcohol content in the fuel of an internal combustion engine, in which the fuel is delivered to the individual cylinders of the internal combustion engine by way of a fuel supply via a fuel rail; and the exhaust gas of the internal combustion engine is discharged via an exhaust gas manifold of an exhaust gas system, wherein at least one exhaust gas probe is present, and in which current changes in the alcohol content of the fuel are evaluated from the signal flow of a lambda signal of the exhaust gas probe, and said signal results from a closed-loop lambda control.With this method a change in the alcohol content of the fuel can be detected and an explicit condition for a change in fuel can be derived. Moreover with the method, fuel-mixture errors can be distinguished from a changed fuel composition after a filling of the tank (fueling).
摘要翻译：本发明涉及一种确定内燃机燃料中酒精含量的方法，其中燃料经由燃料轨道通过燃料供给被输送到内燃机的各个气缸; 并且内燃机的废气经由排气系统的排气歧管排出，其中存在至少一个排气探针，并且其中燃料的醇含量的电流变化从信号流的排气探针的λ信号，并且所述信号来自闭环λ控制。通过这种方法，可以检测燃料的醇含量的变化，并且可以得出燃料变化的明确条件。此外，通过该方法，燃料混合误差可以在填充罐（加油）之后与改变的燃料组成区分开。

2. 发明申请

US20090064969A1 METHOD FOR DETERMINING THE COMPOSITION OF A FUEL BLEND 有权
标题翻译：用于确定燃料混合物组合物的方法
公开(公告)号：US20090064969A1
公开(公告)日：2009-03-12
申请号：US12203532
申请日：2008-09-03
申请人： Oliver MIERSCH-WIEMERS
发明人： Oliver MIERSCH-WIEMERS
IPC分类号： F02P5/04
CPC分类号： F02D19/087 , F02D19/0623 , F02D19/084 , F02D19/088 , F02D35/023 , F02D41/0025 , F02D41/1498 , F02D2200/0612 , F02P5/1527 , Y02T10/36 , Y02T10/46
摘要： The invention relates to a method for determining the composition of a fuel blend from a first and at least a second fuel for operating an internal combustion engine. The method makes provision for the ignition angle of the internal combustion engine to be altered and for a non-intermittent fluctuation in the torque, which is a function of the ignition angle, and/or a non-intermittent rotational discontinuity and/or a variable derived from said discontinuity to be used as the parameter for determining the composition of the fuel blend. The degree of efficiency of an internal combustion engine is a function of the ignition angle. It is known that the optimal ignition angle is a function of the composition of the fuel blend. Furthermore, fuel blends which have different compositions have a different knocking limit. The knocking limit thereby denotes the ignition angle, whereat a predetermined quantity of knocking combustion occurs. If the ignition angle is now displaced from the optimal ignition angle in the direction of an advanced or a retarded ignition point, the engine smoothness decreases. For instance, the displacement of the ignition angle in the direction of a retarded ignition point, leads to misfires, which cause a decrease in engine smoothness and consequently a non-intermittent fluctuation in the engine rotational speed and the engine torque.
摘要翻译：本发明涉及一种用于确定来自用于操作内燃机的第一和至少第二燃料的燃料共混物的组成的方法。该方法提供了要改变内燃机的点火角度和作为点火角的函数的扭矩的非间歇波动和/或非间歇旋转不连续性和/或变量来源于所述不连续性，以用作确定燃料混合物的组成的参数。内燃机的效率是点火角度的函数。已知最佳点火角度是燃料混合物的组成的函数。此外，具有不同组成的燃料共混物具有不同的敲除极限。因此，爆震极限是指发生预定量的爆震燃烧的点火角。如果点火角现在从先进或延迟着火点的方向偏离最佳点火角，则发动机平滑度降低。例如，点火角度在延迟着火点的方向上的位移导致失火，这导致发动机平稳度的降低，从而引起发动机转速和发动机扭矩的非间歇性波动。

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