Steuerungsvorrichtung zur Unterdrückung des Verbrennungsgeräusches für eine Brennkraftmaschine

Details

Veröffentlichungs-Nr.

EP3103990

Aktenzeichen

EP16173159

Anmeldetag

6. Juni 2016

Veröffentlichung

25. Juli 2018

Erteilung

25. Juli 2018

Rechtsraum

EP

IPC

F02D35/02F02D41/14F02D41/40F02D41/00F02D41/24

Abstract

Data on an in-cylinder pressure (CP) resulting from pilot injection are extracted based on in-cylinder pressure data (Dcp) (S12), and are subjected to Fourier transform to be thereby converted into data indicating a relationship between a frequency and a sound pressure level (S14). Subsequently, the converted data are subjected to bandpass filter processes for a plurality of frequencies respectively (S16). When the sound level at each of the frequencies exceeds a threshold (Th1, Th2, Th3...) provided for each of the frequencies, an amount of excess over the threshold is calculated (S18). Then, a combustion noise correction amount (”Qpcs) is calculated based on the amount of excess (S22).

Anmelder

Firma

Toyota Jidosha Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete