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Title:
SUCTION AIR VOLUME ESTIMATING DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2003/033897
Kind Code:
A1
Abstract:
A throttle model (M2) estimates a throttle−passed air flow rate mt from an equation obtained based on the energy conservation law, the momentum conservation law, and the mass conservation law. A suction pipe model (M3) estimates an in−suction−pipe air pressure Pm and an in−suction−pipe air temperature Tm from an equation based on the mass conservation law and the energy conservation law. A suction valve model (M4) estimates an air flow rate mc passing around a suction valve from an equation obtained based on the energy conservation law, the momentum conservation law, the mass conservation law and a state equation. A cylinder model (M5) estimates an in−cylinder pressure Pc and an in−cylinder air temperature Tc from an equation based on the energy conservation law. These models permit an in−cylinder suction air volume Mc to be determined by calculation without using many table retrievals.

Inventors:
Tanaka, Satoru (Toyota Jidosha Kabushiki Kaisha, 1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Bickel, Robert (Toyota Jidosha Kabushiki Kaisha, 1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Ohata, Akira (Toyota Jidosha Kabushiki Kaisha, 1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Application Number:
PCT/JP2002/010642
Publication Date:
April 24, 2003
Filing Date:
October 15, 2002
Export Citation:
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Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi, Aichi, 471-8571, JP)
Tanaka, Satoru (Toyota Jidosha Kabushiki Kaisha, 1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Bickel, Robert (Toyota Jidosha Kabushiki Kaisha, 1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Ohata, Akira (Toyota Jidosha Kabushiki Kaisha, 1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
International Classes:
F02D11/10; F02D41/18; G01F1/86; G01F15/04; F02D41/06; F02D41/30; (IPC1-7): F02D45/00
Foreign References:
JPH11229936A1999-08-24
US5889205A1999-03-30
EP0326065A21989-08-02
JPS63289237A1988-11-25
EP0522908A11993-01-13
Other References:
See also references of EP 1443199A4
P.E. MORAAL ET AL.: "An Observer Design for Single-Sensor Individual Cylinder Pressure Control", PROCEEDINGS OF THE 32ND CONFERENCE ON DECISION AND CONTROL, 15 December 1993 (1993-12-15)
Attorney, Agent or Firm:
Oba, Sakio (Prospec Patent Firm, 2nd Floor Nagoya-KS Building, 1-18, Taiko-3-chom, Nagoya-shi Aichi, 453-0801, JP)
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