Title:
An estimation method of the knock intensity of the internal-combustion engine by reversal of a wave equation, and the control method of combustion of an organization
Document Type and Number:
Japanese Patent JP6053335
Kind Code:
B2
Abstract:
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.
Inventors:
Jonathan Shovan
Application Number:
JP2012126160A
Publication Date:
December 27, 2016
Filing Date:
June 01, 2012
Export Citation:
Assignee:
IFP ENERGIES NOUVELLES
International Classes:
F02D45/00; F02D41/22
Domestic Patent References:
| JP4152238A | ||||
| JP2005023902A | ||||
| JP2011516179A | ||||
| JP2009529115A | ||||
| JP4066753A | ||||
| JP2006322372A | ||||
| JP200958467A | ||||
| JP200857531A |
Foreign References:
| FR2949511A1 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata