公开(公告)号：EP4394174A1

公开(公告)日：2024-07-03

申请号：EP22860816.2

申请日：2022-02-21

申请人： Kubota Corporation

发明人： KOBAYASHI, Yasushi ,  OSO, Hiroki ,  SUEHIRO, Kiichi ,  TAGASHIRA, Yuki ,  NAKAKITA, Koji

IPC分类号： F02M51/00 ,  F02M51/06 ,  F02M47/00 ,  F02D41/26

CPC分类号： Y02T10/40 ,  F02M51/00 ,  F02M47/00 ,  F02D41/26 ,  F02M51/06

摘要： [Problem] There are provided a diesel engine, a diesel engine manufacturing method, and a diesel engine injection-amount correction system which can easily improve accuracy of correction of variations in fuel injection amount. [Solution] A diesel engine 30 includes an injector 4 that uses a solenoid to directly drive a needle valve and inject a fuel and an injector control device 2 that controls the driving by the injector 4. The injector control device 2 includes a charge voltage control circuit 22, a storage unit 25 that stores a correction value related to an injection amount of the fuel injected from the injector 4, and an injector control circuit 24 that controls the driving by the injector 4 on the basis of each of a voltage supplied from the charge voltage control circuit 22 and the correction value stored in the storage unit 25. The correction value is set according to a voltage applied to a terminal of the injector control device 2 connected to a load when a current starts to flow in the load connected to the injector control device 2.

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.