发明名称 |
Method for estimating the pinking intensity of an internal combustion engine by inverting a wave equation |
摘要 |
The method involves constructing a wave equation model of a cylinder-head based on a physical model describing propagation of waves in a solid medium. Coefficients of a Fourier decomposition of a vibration signal from a cylinder pressure sensor/an accelerometric sensor is determined in real time by inverting dynamics of the equation model by using an adaptive non-linear estimator. Energy contained in the signal is calculated by summing squares of the coefficients. A parameter correlated with knocking intensity equal to a square root of a maximum of the energy is determined (CAL) in real time. |
申请公布号 |
EP2530446(A2) |
申请公布日期 |
2012.12.05 |
申请号 |
EP20120290178 |
申请日期 |
2012.05.30 |
申请人 |
IFP ENERGIES NOUVELLES |
发明人 |
CHAUVIN, JONATHAN |
分类号 |
G01L23/22;F02B77/08;F02D35/02;F02P5/152;G01M15/04 |
主分类号 |
G01L23/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|