公开(公告)号：US20200284208A1

公开(公告)日：2020-09-10

申请号：US16652420

申请日：2018-08-08

申请人： Yanmar Co., Ltd.

发明人： Isao Takagishi ,  Masaki Nanko ,  Ryota Iwano ,  Hiroyuki Machiyama ,  Kenichi Nakaguchi ,  Yusei Fukuda

IPC分类号： F02D1/04 ,  F16C11/04

摘要： A technology that can extend the life of a fuel injection device of an engine while maintaining its good responsiveness is provided. A fuel injection device 100 for an engine includes: a control rack 55 supported to be slidable in an axial direction and capable of adjusting of a fuel pressure-feed amount of a fuel pressure-feed mechanism unit 51, based on its slide-position relative to the axial direction; an actuator 40 capable of reciprocating its operating unit 41; and a link lever 20 swingably supported by a pivot shaft member 25 and configured to swing in association with reciprocation of the operating unit 41 of the actuator 40 thereby causing the control rack 55 to slide, wherein the fuel injection device includes an actuator-side connecting part 20A connecting an operating unit 41 of the actuator 40 to the link lever 20, and the actuator-side connecting part 20A is positioned on the same axis as the operating unit 41 of the actuator 40.

公开(公告)号：US11441491B2

公开(公告)日：2022-09-13

申请号：US17239847

申请日：2021-04-26

申请人： Yanmar Co. Ltd.

发明人： Isao Takagishi ,  Masaki Nanko ,  Ryota Iwano ,  Hiroyuki Machiyama ,  Kenichi Nakaguchi ,  Yusei Fukuda

IPC分类号： F02D1/04 ,  F16C11/04 ,  F02D41/30 ,  F02D1/00

摘要： Provided is a fuel injection device for engines, configured using a technique which can extend service life while good responsiveness is maintained. This fuel injection device for engines is provided with: a control rack supported so as to be slidable in an axial direction and configured so that the amount of fuel delivered under pressure by a fuel pumping mechanism can be adjusted by changing the sliding position of the control rack in the axial direction; an actuator which can move forward and backward an operation section; and a link lever which is supported in a rockable manner by a support shaft and which rocks as the operation section of the actuator moves forward and backward, thereby sliding the control rack. The fuel injection device for engines is further provided with an actuator-side connection section for connecting the operation section of the actuator to the link lever. The actuator-side connection section is disposed coaxially with the operation section of the actuator.

公开(公告)号：US10443554B2

公开(公告)日：2019-10-15

申请号：US15025938

申请日：2014-09-10

申请人： YANMAR CO., LTD.

发明人： Masaki Nankou ,  Ryota Iwano ,  Isao Takagishi

IPC分类号： F02M59/36 ,  F04B49/22 ,  F02M59/34 ,  F02M59/20 ,  F04B19/22 ,  F02M59/26 ,  F02M59/28 ,  F02D1/10 ,  F02M59/04 ,  F02M59/48 ,  F02D1/00

摘要： A fuel injection pump includes a plunger, a plunger barrel which supports the plunger, a body which houses the plunger and the plunger barrel, a plate which covers an opening formed on the body, a control lever turnably attached near the plate, and an adjuster bolt which abuts against the control lever to restrict turn of the control lever and is supported by a stay disposed on the plate.

公开(公告)号：US11041448B2

公开(公告)日：2021-06-22

申请号：US16652420

申请日：2018-08-08

申请人： Yanmar Co. Ltd.

发明人： Isao Takagishi ,  Masaki Nanko ,  Ryota Iwano ,  Hiroyuki Machiyama ,  Kenichi Nakaguchi ,  Yusei Fukuda

IPC分类号： F02D1/04 ,  F16C11/04 ,  F02D41/30 ,  F02D1/00

摘要： A technology that can extend the life of a fuel injection device of an engine while maintaining its good responsiveness is provided. A fuel injection device 100 for an engine includes: a control rack 55 supported to be slidable in an axial direction and capable of adjusting of a fuel pressure-feed amount of a fuel pressure-feed mechanism unit 51, based on its slide-position relative to the axial direction; an actuator 40 capable of reciprocating its operating unit 41; and a link lever 20 swingably supported by a pivot shaft member 25 and configured to swing in association with reciprocation of the operating unit 41 of the actuator 40 thereby causing the control rack 55 to slide, wherein the fuel injection device includes an actuator-side connecting part 20A connecting an operating unit 41 of the actuator 40 to the link lever 20, and the actuator-side connecting part 20A is positioned on the same axis as the operating unit 41 of the actuator 40.

公开(公告)号：US10968838B2

公开(公告)日：2021-04-06

申请号：US16616392

申请日：2018-03-26

申请人： Yanmar Co., Ltd.

发明人： Ryosuke Shimomura ,  Ryota Iwano ,  Tomoaki Morita

IPC分类号： F02D41/02 ,  F02D45/00 ,  F02D1/04 ,  F02D41/30

摘要： An engine speed control device performing: a first PID gain calculation step of calculating a target engine speed to thereby calculate a first PID gain based on an engine speed deviation between the target engine speed and an engine speed; a target rack position calculation step of correcting the first PID gain based on a cooling water temperature to thereby calculate a target rack position of a fuel injection pump; a second PID gain calculation step of calculating a second PID gain based on a rack position deviation between the target rack position and a rack position; and a rack control signal producing step of correcting the second PID gain based on a lubricating oil temperature to thereby produce a rack control signal. The engine speed control device thus controls an engine speed by controlling the rack position based on the rack control signal.

公开(公告)号：US20210239055A1

公开(公告)日：2021-08-05

申请号：US17239847

申请日：2021-04-26

申请人： Yanmar Co. Ltd.

发明人： Isao Takagishi ,  Masaki Nanko ,  Ryota Iwano ,  Hiroyuki Machiyama ,  Kenichi Nakaguchi ,  Yusei Fukuda

IPC分类号： F02D1/04 ,  F16C11/04

摘要： Provided is a fuel injection device for engines, configured using a technique which can extend service life while good responsiveness is maintained. This fuel injection device for engines is provided with: a control rack supported so as to be slidable in an axial direction and configured so that the amount of fuel delivered under pressure by a fuel pumping mechanism can be adjusted by changing the sliding position of the control rack in the axial direction; an actuator which can move forward and backward an operation section; and a link lever which is supported in a rockable manner by a support shaft and which rocks as the operation section of the actuator moves forward and backward, thereby sliding the control rack . The fuel injection device for engines is further provided with an actuator-side connection section for connecting the operation section of the actuator to the link lever. The actuator-side connection section is disposed coaxially with the operation section of the actuator.

公开(公告)号：US10557437B2

公开(公告)日：2020-02-11

申请号：US15776934

申请日：2016-11-10

申请人： Yanmar Co., Ltd.

发明人： Ryota Iwano ,  Satoshi Hiroya ,  Hiroyuki Machiyama ,  Kosuke Hara ,  Ryosuke Okamoto

IPC分类号： F02D41/40 ,  F02D41/20 ,  F02M59/20 ,  F02D41/06 ,  F02M59/36 ,  F02M59/46

摘要： A fuel injection pump (100) provided in a diesel engine, including: an electromagnetic spill valve (20) configured to adjust a fuel injection amount by releasing a pressurized fuel with opening/closing of a spill valve body (23); and an ECU (Engine Control Unit, 50) configured to form a current waveform of drive current of the electromagnetic spill valve (20). The ECU (50), during the warm state, detects a valve-close timing of the electromagnetic spill valve (20), forms an optimum current waveform of drive current based on the detected valve-close timing, and applies drive current with thus formed optimum current waveform to the electromagnetic spill valve (20), whereas, during the cold state, the ECU (50) applies only drive current with a pre-set current waveform to the electromagnetic spill valve (20).