Title:
The control system of a jump-spark-ignition type internal-combustion engine
Document Type and Number:
Japanese Patent JP6098477
Kind Code:
B2
Abstract:
In an internal combustion engine, an ignition plug is arranged near a center of an upper wall surface of a combustion chamber, and is used to ignite air-fuel mixture. Fuel injected from a port fuel injection valve is directed toward the center of the combustion chamber when the intake valve is open. The engine is configured to generate a tumble flow in a cylinder. A flow speed of gas around the ignition plug during ignition is controlled by changing a pattern of tumble flow between an ordinary first tumble flow pattern and a different second tumble flow pattern on the basis of an engine rotation speed. The tumble flow having the second pattern is generated by overlapping a fuel injection period of the port fuel injection valve with the open period of the intake valve.
Inventors:
Tsuchidate
Application Number:
JP2013231124A
Publication Date:
March 22, 2017
Filing Date:
November 07, 2013
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02B31/00; F02B23/08; F02B23/10; F02D41/02; F02D41/04
Domestic Patent References:
| JP2011236859A | ||||
| JP8004641A | ||||
| JP2012163010A | ||||
| JP2012002107A |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi