Internal combustion engine control device and control method

Title:

Internal combustion engine control device and control method

Document Type and Number:

Japanese Patent JP6326728

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To suppress the generation of abnormal combustion before an ignition time resulting from in-cylinder injection.SOLUTION: A control device of an internal combustion engine comprises an in-cylinder injection fuel injection valve and a port injection fuel injection valve. When abnormal combustion before an ignition time resulting from in-cylinder injection is detected (S1), the generation of the abnormal combustion is suppressed by lowering a sharing ratio of in-cylinder injection, and increases a sharing ratio of port injection so as to compensate for a fuel injection amount accompanied by the lowering of the sharing ratio of the in-cylinder injection (S2). Furthermore, a compression ratio is lowered (S3) so as to suppress the generation of a normal spark knock accompanied by the lowering of the sharing ratio of the in-cylinder injection, and the ignition time is retarded (S4).

Inventors:

Tadaki Mano

Application Number:

JP2013123313A

Publication Date:

May 23, 2018

Filing Date:

June 12, 2013

Export Citation:

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