公开(公告)号：US20160258367A1

公开(公告)日：2016-09-08

申请号：US15051349

申请日：2016-02-23

申请人： Robert Bosch GmbH

发明人： Martin Rauscher ,  Andreas Roth ,  Raffael Hedinger ,  Wolfgang Fischer ,  David Gaenzle ,  Christopher H. Onder

IPC分类号： F02D35/02 ,  G01M15/08 ,  F02D41/00

CPC分类号： F02D35/024 ,  F02D35/023 ,  F02D41/008 ,  F02D41/009 ,  F02D41/2432 ,  G01M15/08

摘要： A method for determining a signal offset between a crankshaft angle signal and a combustion chamber pressure signal in an internal combustion engine, in which an instantaneously measured combustion chamber pressure profile is compared to a calculated, modeled combustion chamber pressure profile. In a method in which the correction values of the signal offset may be ascertained in any operating state of the internal combustion engine, the instantaneously measured combustion chamber pressure profile is shifted with respect to the calculated, modeled combustion chamber pressure profile along a crankshaft angle for generating an artificial signal offset, and a reconstruction quality is determined from this shifted combustion chamber pressure profile in that, from the artificial signal offset along the crankshaft angle of the shifted instantaneously measured combustion chamber pressure profile, a reconstruction error is ascertained as a measure of the effective signal offset between the crankshaft angle signal and the combustion chamber pressure signal.

摘要翻译： 一种用于确定内燃机中的曲轴角度信号和燃烧室压力信号之间的信号偏移的方法，其中瞬时测量的燃烧室压力分布与计算出的建模的燃烧室压力分布进行比较。 在其中可以在内燃机的任何操作状态下确定信号偏移的校正值的方法中，瞬时测量的燃烧室压力分布相对于沿着曲轴角度计算的建模的燃烧室压力分布而偏移， 产生人造信号偏移，并且从该偏移的燃烧室压力分布确定重建质量，因为从沿着所转换的瞬时测量的燃烧室压力分布曲线的曲轴角度的人造信号偏移确定重建误差作为 曲轴角度信号与燃烧室压力信号之间的有效信号偏移。

公开(公告)号：US10012156B2

公开(公告)日：2018-07-03

申请号：US15051349

申请日：2016-02-23

申请人： Robert Bosch GmbH

发明人： Martin Rauscher ,  Andreas Roth ,  Raffael Hedinger ,  Wolfgang Fischer ,  David Gaenzle ,  Christopher H. Onder

IPC分类号： F02D35/00 ,  F02D41/04 ,  G01M15/08 ,  G01M15/06 ,  F02D35/02 ,  F02D41/00 ,  F02D41/24

CPC分类号： F02D35/024 ,  F02D35/023 ,  F02D41/008 ,  F02D41/009 ,  F02D41/2432 ,  G01M15/08

摘要： A method for determining a signal offset between a crankshaft angle signal and a combustion chamber pressure signal includes: measuring the combustion chamber pressure signal; shifting an alignment of the measured combustion chamber pressure signal with respect to the crankshaft angle signal by a plurality of respective offset angles to generate a plurality of offset combustion chamber pressure signals; reconstructing the offset combustion chamber pressure signals using a plurality of predetermined inherent pressure curves to generate reconstructed combustion chamber pressure signals; determining reconstruction errors of the reconstructed combustion chamber pressure signals as a function of differences between the offset combustion chamber pressure signals and the reconstructed combustion chamber pressure signals; and determining the signal offset between the crankshaft angle signal and the combustion chamber pressure signal as a one of the plurality of offset angles producing the reconstruction error having the lowest value.