公开(公告)号：US11781501B2

公开(公告)日：2023-10-10

申请号：US17785528

申请日：2021-03-08

申请人： KUBOTA Corporation

发明人： Akira Tamura ,  Kensuke Fujita ,  Hiroki Oso ,  Yasushi Kobayashi ,  Shingo Matsunobu ,  Mitsugu Okuda

IPC分类号： F02F1/24 ,  F02M35/02 ,  F02M55/02

CPC分类号： F02F1/242 ,  F02M55/025 ,  F02M2200/857

摘要： To provide an engine head structure for “omission or shortening a fuel pipe that withstands a high pressure”, “simplification or omission of a support bracket for a fuel accumulator and/or a fuel injection device”, “reduction of the number of parts” by devising a fuel accumulator and a support structure therefor, and the like. An engine head structure has a support bracket for mounting a fuel accumulator including a joining portion with a fuel injection device on a cylinder head, is disposed on a side of the fuel injection device or between adjacent fuel injection devices. The support bracket includes a member having a mounting portion on which the fuel accumulator is placed and mounted, a mounting leg portion extending from the mounting portion and mounted on the cylinder head, and an aligning leg portion extending from the mounting portion for positioning the support bracket with respect to the cylinder head.

公开(公告)号：US12012909B2

公开(公告)日：2024-06-18

申请号：US18254280

申请日：2022-02-21

申请人： KUBOTA CORPORATION

发明人： Yasushi Kobayashi ,  Shingo Matsunobu ,  Kiichi Suehiro ,  Naotaro Nagai

IPC分类号： F02D41/40

CPC分类号： F02D41/402

摘要： Provided is an injector control device which is capable of setting a preceding injection amount to a fuel injection amount that is less than a main injection amount, while suppressing situations where preceding injections executed prior to a main injection in multi-stage injection are eliminated.
An injector control device 2 includes: an injection amount setting unit 211 that sets, as a total injection amount, a total of fuel injection amounts in multi-stage injection in a single cycle, and sets, as a preceding injection amount, a fuel injection amount in a preceding injection executed prior to a main injection in the multi-stage injection; an energization period setting unit 212 that sets an energization period of an injector 31 based on the fuel injection amounts set by the injection amount setting unit 211; and an injector driving unit 213 that controls driving of the injector 31 based on the energization period set by the energization period setting unit 212. The injection amount setting unit 211 sets a fuel injection amount that is a predetermined percentage of the total injection amount as the preceding injection amount.

公开(公告)号：US11261780B2

公开(公告)日：2022-03-01

申请号：US16659628

申请日：2019-10-22

申请人： KUBOTA Corporation

发明人： Hiroki Oso ,  Nobuyoshi Okada ,  Shingo Matsunobu ,  Yoshinori Tanaka ,  Ayako Sakurai

IPC分类号： F01P3/12 ,  F01P11/08 ,  F02B39/14 ,  F02D41/00 ,  F01P3/02 ,  F02B39/00 ,  F02M35/10 ,  F01P3/00 ,  F02B39/16

摘要： There is provided an engine equipped with a supercharger that suppresses heat deterioration of engine oil. The engine equipped with a supercharger includes a supercharger; an oil supply passage that supplies engine oil to a shaft bearing part of the supercharger; an oil discharge passage that discharges the engine oil from the shaft bearing part of the supercharger; and a water-cooling-type oil cooler. The water-cooling-type oil cooler is provided in the oil discharge passage, and the engine oil discharged from the shaft bearing part of the supercharger is cooled by the engine cooling water that passes the water-cooling-type oil cooler. The engine cooling water is desirably supplied from the cylinder jacket to the water-cooling-type oil cooler.