Title:
Combustion control device of engine
Document Type and Number:
Japanese Patent JP6001920
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a combustion control device for an engine which properly controls an air/fuel ratio in an exhaust gas flowing into a catalyst, materializes stabilized combustion in fast idle and can avoid the occurrence of knocking in a low speed heavy load operation or in WOT (Wide Open Throttle).SOLUTION: An ECU 26 controls the phase of a sub cam 20 and causes an exhaust valve 7 to open in a predetermined timing through an intake stroke into a compression stroke to discharge a part of in-cylinder air to an exhaust system. After the exhaust valve 7 is closed, the ECU 26 causes an injector 11 for in-cylinder direct injection to inject fuel. Since the injection of the fuel from the injector 11 is carried out after the exhaust valve 7 is closed, the fuel does not blow through the exhaust system, the in-cylinder air/fuel-ratio becomes rich and the occurrence of the knocking is avoided. The exhaust gas is mixed with the discharged air when passing through the exhaust system to have the air/fuel ratio corresponding to the cleaning capacity of a catalyst 14.
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Inventors:
Koji Oiwa
Ishida Rei
Ishida Rei
Application Number:
JP2012116683A
Publication Date:
October 05, 2016
Filing Date:
May 22, 2012
Export Citation:
Assignee:
Fuji Heavy Industries Ltd.
International Classes:
F02D13/02; F01N3/24; F02D41/04; F02D43/00; F02D45/00
Domestic Patent References:
| JP2010024975A | ||||
| JP2009085034A | ||||
| JP2010190077A |
Foreign References:
| WO2012070148A1 |
Attorney, Agent or Firm:
Susumu Ito
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