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Patent Searching and Data


Title:
HEAT RELEASE RATE ESTIMATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/035647
Kind Code:
A1
Abstract:
A map of distances between cylinder pressure sensors and combustion areas in which the distances between cylinder pressure sensors and combustion fields are acquired by determining the main injection timing, a map of burning velocities in which burning velocities are acquired according to engine speed and fuel injection pressure, and a map of minimum required filter frequencies in which minimum required filter frequencies are acquired according to the distances between cylinder pressure sensors and combustion areas and the burning velocities, are stored in ROM. Heat release waveforms are estimated by filtering cylinder pressure data from the cylinder pressure sensors that detect the pressure in the combustion chambers according to the abovementioned minimum required filter frequencies, and the combustion start timing for fuel injected by the main injection is identified.

Inventors:
MINAMI, Masahiro (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
Application Number:
JP2010/066171
Publication Date:
March 22, 2012
Filing Date:
September 17, 2010
Export Citation:
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Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町1番地 Aichi, 〒4718571, JP)
International Classes:
F02D45/00; F02D35/00; F02D41/38
Foreign References:
JP2010196556A
JP2010112312A
JP2009197672A
JP2009138675A
JP2005273576A
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (Sumitomoseimei Midosuji Bldg, 14-3 Nishitemma 4-chome, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)
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Claims: