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Patent Searching and Data


Title:
CONTROL DEVICE OF SPARK IGNITION ENGINE
Document Type and Number:
Japanese Patent JP2004076616
Kind Code:
A
Abstract:

To impart the fuel consumption improving effect by lean combustion; and to expand a traveling area for obtaining the effect.

Burnt gas is exhausted from exhaust stroke side preceding cylinders 2A and 2D between a pair of cylinders overlapping in an exhaust stroke and an intake stroke, and is introduced as it is into intake stroke side succeeding cylinders 2B and 2C via a gas passage 22 between the cylinders, and only gas exhausted from the succeeding cylinders 2B and 2C is introduced into an exhaust passage 20. Combustion is performed in the lean air fuel ratio larger by a prescribed quantity than the theoretical air fuel ratio in the preceding cylinders 2A and 2D, and the combustion is performed by supplying fuel to the burnt gas introduced from the preceding cylinders 2A and 2D in the succeeding cylinder 2B and 2C. Fuel supply to a prescribed cylinder is stopped in the prescribed timing when an air-fuel mixture temperature of the succeeding cylinders 2B and 2C is a relatively high state.


Inventors:
SHINYA YOSHIYUKI
HITOMI MITSUO
SUMITA KOJI
HAYASHI YOSHINORI
ARAKI KEIJI
Application Number:
JP2002235205A
Publication Date:
March 11, 2004
Filing Date:
August 12, 2002
Export Citation:
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Assignee:
MAZDA MOTOR
International Classes:
F01L9/04; F02B15/00; F02B69/06; F02B75/02; F02B75/18; F02D17/02; F02D21/08; F02D41/02; F02D41/04; F02D43/00; F02D45/00; F02F1/24; F02M25/07; (IPC1-7): F02D41/04; F01L9/04; F02B15/00; F02B69/06; F02B75/02; F02B75/18; F02D17/02; F02D21/08; F02D41/02; F02D43/00; F02D45/00; F02M25/07
Attorney, Agent or Firm:
Etsushi Kotani
Kyuichi Ueki
Jiro Higuchi