CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

    公开(公告)号:EP3617487A1

    公开(公告)日:2020-03-04

    申请号:EP19193435.5

    申请日:2019-08-23

    发明人: NISHIDA, Kentaro

    摘要: A controller includes a valve control unit and a target calculation unit. The valve control unit is configured to control a fuel injection valve such that divergence decreases between an ignition delay of fuel injected into a cylinder through main injection and an ignition delay target value. The target calculation unit is configured to calculate the ignition delay target value such that the ignition delay target value decreases as estimated ignitability of the fuel in the cylinder increases during an engine operation in a region where diffusion combustion and premix combustion are both performed, the ignitability of the fuel in the cylinder being estimated based on a parameter that varies the ignitability.

    CONTROL SYSTEM FOR ENGINE, ENGINE, METHOD OF CONTROLLING ENGINE, AND COMPUTER PROGRAM PRODUCT

    公开(公告)号:EP3502433A1

    公开(公告)日:2019-06-26

    申请号:EP18209036.5

    申请日:2018-11-29

    IPC分类号: F02B1/12 F02B31/06

    摘要: A control system for a compression-ignition engine is provided, which includes an engine having a combustion chamber, an injector configured to supply fuel into the combustion chamber, a spark plug, a swirl valve provided to an intake passage of the engine, and a controller. The controller includes a processor configured to execute a swirl adjusting module to adjust a swirl valve opening to generate a swirl flow inside the combustion chamber, a fuel injection amount controlling module to control fuel injection amounts of pre-injection and post-injection so as to increase a ratio of an injection amount of the post-injection to a total fuel injection amount into the combustion chamber in one cycle as an engine speed increases, and a combustion controlling module to control the spark plug to ignite at a given ignition timing after the swirl generation and fuel injection, so that partial compression-ignition combustion is performed.