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    ELECTRONIC FUEL INJECTION TYPE DIESEL ENGINE
    1.
    发明公开
    ELECTRONIC FUEL INJECTION TYPE DIESEL ENGINE 审中-公开

    公开(公告)号：EP4269781A1

    公开(公告)日：2023-11-01

    申请号：EP21914980.4

    申请日：2021-10-25

    申请人： Kubota Corporation

    发明人： OSO, Hiroki ,  TAGASHIRA, Yuki ,  TAMURA, Akira ,  KANEKO, Rina ,  SUEHIRO, Kiichi

    IPC分类号： F02M61/14 ,  F02M61/16

    摘要： Provided is an electronic fuel injection type diesel engine capable of performing precise electronic fuel injection control. A fuel injector 7 includes a main body portion 7c having a large diameter, a nozzle portion 7d having a small diameter, and a pressing surface 7e formed at a step portion between the main body portion 7c and the nozzle portion 7d, in which the nozzle portion 7d of the fuel injector 7 is inserted from an inside of a sleeve 10 into an inside of an insertion hole 1a, the fuel injector 7 is pressed toward a vortex chamber 2 by a pressing force 11, and the pressing force 11 applied to the fuel injector 7 is received by a pressure receiving surface 10b of the sleeve 10 from the pressing surface 7e of the fuel injector 7 via the washer 12.

    DIESEL ENGINE
    2.
    发明公开
    DIESEL ENGINE 审中-公开

    公开(公告)号：EP4446574A1

    公开(公告)日：2024-10-16

    申请号：EP22903795.7

    申请日：2022-08-29

    申请人： Kubota Corporation

    发明人： KOBAYASHI, Yasushi ,  NAGAI, Naotaro ,  KANEKO, Rina ,  TENNOMI, Masanari ,  MATSUO, Naruhiro

    IPC分类号： F02B19/14 ,  F02D41/40 ,  F02D45/00

    摘要： To provide a diesel engine which can realize reduction of NOx and reduction of PM at the same time. A diesel engine 1 includes: an injector 15 which is provided facing an auxiliary combustion chamber 13 and injects fuel to the auxiliary combustion chamber 13; a control device which controls an injection timing of fuel 81 injected from the injector 15; and exhaust circulating means which circulates exhaust of the engine. The control device controls the injection timing of main injection and pre-injection performed prior to the main injection and executes control such that, by ensuring a premixing period of the pre-injection from start of the pre-injection until ignition of an air-fuel mixture of the fuel 81 injected by the pre-injection and the air AR, a homogenous and lean premixed air-fuel mixture is generated in the auxiliary combustion chamber 13 by the fuel 81 injected by the pre-injection and air AR, and the premixing period of the main injection from the start of the main injection until ignition of the air-fuel mixture of the fuel 81 injected by the main injection and the air AR is ensured.