Internal-combustion engines – Charge forming device – Including cylinder pressure or temperature responsive means
Reexamination Certificate
2007-02-27
2007-02-27
Kwon, John T. (Department: 3747)
Internal-combustion engines
Charge forming device
Including cylinder pressure or temperature responsive means
C123S704000, C701S103000
Reexamination Certificate
active
10563829
ABSTRACT:
An internal combustion engine (1) generates power by burning a mixture of fuel and air in each combustion chamber (3). The internal combustion engine (1) is provided with an in-cylinder pressure sensor (15) disposed in the combustion chamber (3) and an ECU (20). The ECU (20) calculates control parameters each of which is a product of an in-cylinder pressure detected by the in-cylinder pressure sensor (15) and a value obtained by exponetiating an in-cylinder volume at timing of detecting the in-cylinder pressure with a predetermined index at two predetermined points during a period from opening timing of an intake valve (Vi) to closing timing thereof, and calculates a quantity of air aspirated into each combustion chamber (3) based upon a difference in the control parameter between the two predetermined points.
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Goya Yoichiro
Moriya Hidenori
Kwon John T.
Toyota Jidosha & Kabushiki Kaisha
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