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公开(公告)号：US10557437B2
公开(公告)日：2020-02-11
申请号：US15776934
申请日：2016-11-10
Applicant: Yanmar Co., Ltd.
Inventor： Ryota Iwano , Satoshi Hiroya , Hiroyuki Machiyama , Kosuke Hara , Ryosuke Okamoto
Abstract: 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).
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公开(公告)号：US10550787B2
公开(公告)日：2020-02-04
申请号：US15573671
申请日：2016-05-13
Applicant: Yanmar Co., Ltd.
Inventor： Kazuma Kishio , Hiroyuki Otsubo , Yoshinori Mizukami
Abstract: This disclosure includes engines that are capable of controlling an air-fuel ratio responsive to rapid changes in the calorific value of a fuel gas. Some engines include an A/F valve, a solenoid valve, and a control unit configured to close the A/F valve when an average opening degree of the solenoid valve is lower than a preset target opening degree, and open the A/F valve when the average opening degree is equal to or higher than the target opening degree. In some engines, when the opening degree of the solenoid valve has been an upper limit opening degree or a lower limit opening degree of the solenoid valve over a predetermined number of times, the control unit is configured to compare with the upper or lower limit opening degree, in lieu of the average opening degree, against the target opening degree to open or close the A/F valve.
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公开(公告)号：US10549626B2
公开(公告)日：2020-02-04
申请号：US15278580
申请日：2016-09-28
Applicant: YANMAR CO., LTD.
Inventor： Yoshiaki Kurokawa
Abstract: A working vehicle includes an engine mounted in a front portion of a travelling vehicle, and a post-processing device configured to purify exhaust gas from the engine. The engine and the post-processing device are covered with a hood. An upper surface side of the hood is inclined to extend diagonally upward from a front side to a rear side. The post-processing device is mounted on an upper side of the engine, and is positioned on a rear and inner side of the inclined upper surface side of the hood.
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公开(公告)号：US20200033856A1
公开(公告)日：2020-01-30
申请号：US16490436
申请日：2018-01-19
Applicant: Yanmar Co., Ltd.
Inventor： Yasuto NISHII
Abstract: A travel route determination system including: a route generating unit generating planned travel routes including work routes along which a work vehicle performs autonomous travel; a control unit capable of causing the work vehicle to perform autonomous travel along the planned travel routes; an information obtaining unit obtaining position information and orientation information on the work vehicle; and a determination unit determining an autonomous travel candidate route at which the work vehicle can start autonomous travel, before the work vehicle starts autonomous travel. The determination unit sets a candidate determination region based on the position information and orientation information on the work vehicle, and the determination unit determines, among the work routes, a work route in the candidate determination region as the autonomous travel candidate route.
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公开(公告)号：US10533474B2
公开(公告)日：2020-01-14
申请号：US15475677
申请日：2017-03-31
Applicant: Yanmar Co. Ltd.
Inventor： Tomoyuki Kimura
IPC: F01N3/28 , B60K13/04 , F02M26/03 , F02M26/15 , F02M26/23 , B60K5/12 , F01N3/021 , F01N3/20 , F01N13/10
Abstract: In the engine device having an exhaust gas purification device which removes particulate matters in exhaust gas of the engine or nitrogen oxides in the exhaust gas of the engine, the exhaust gas purification device is firmly fixed to a support base, and an exhaust gas outlet pipe of the engine is provided with an exhaust connection portion which connects an exhaust gas inlet of the exhaust gas purification device, and a support base connection portion which connects the support base.
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Patent Agency Ranking
公开(公告)号：US20190383245A1
公开(公告)日：2019-12-19
申请号：US16089167
申请日：2017-03-13
Applicant: YANMAR CO., LTD.
Inventor： Takayuki ONODERA
Abstract: An engine device 1 including: a cylinder head (2) provided with a plurality of intake fluid passages (36) for taking fresh air into a plurality of intake ports and a plurality of exhaust fluid passages (37) for emitting an exhaust gas from a plurality of exhaust ports. An intake manifold (3) which aggregates the plurality of intake fluid passages 36 is formed integrally with one of left and right side portions of the cylinder head (2).
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公开(公告)号：US10473046B2
公开(公告)日：2019-11-12
申请号：US15269699
申请日：2016-09-19
Applicant: YANMAR CO., LTD.
Inventor： Masataka Mitsuda
IPC: F01N3/00 , F02D41/02 , F01N3/10 , F01N13/18 , F01N3/021 , F01N1/08 , F01N3/023 , F01N13/00 , F01N1/00 , F01N13/08 , F01N13/10 , F02D41/24 , F02D41/26 , E02F9/08
Abstract: An engine system for a working machine includes an engine disposed in a main body of the working machine, an exhaust manifold coupled to the engine, a tail pipe, an exhaust-gas purification device disposed in the main body and including an exhaust-gas inlet-side housing. The exhaust-gas inlet-side housing includes an exhaust-gas inlet coupled to the exhaust manifold, and an exhaust-gas outlet-side housing including an exhaust-gas outlet coupled to the tail pipe. The exhaust-gas purification device is configured to purify exhaust gas discharged from the engine and to cause the purified exhaust gas to be discharged from the tail pipe to an outside of the engine system. The engine system is configured such that a silencer housing is disposable in the exhaust-gas inlet-side housing, the exhaust-gas outlet-side housing, or both, to attenuate exhaust sound of the engine.
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公开(公告)号：US10457372B2
公开(公告)日：2019-10-29
申请号：US16064996
申请日：2016-12-21
Applicant: Yanmar Co., Ltd.
Inventor： Yuji Hashimoto
Abstract: A propulsion device for a ship capable of preventing idling of a propeller without any limitation on the type of clutch. The propulsion device includes: a forward and reverse switching clutch for transmitting the driving power from an input shaft to a forward gear or a reverse gear; a forward one-way clutch, disposed between the input shaft and the forward gear, for connecting the forward gear and the input shaft when the forward gear is rotated at a higher speed than that of the input shaft; and a reverse one-way clutch, disposed between the input shaft and the reverse gear, for connecting the reverse gear and the input shaft when the reverse gear is rotated at a higher speed than that of the input shaft.
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公开(公告)号：US10451015B2
公开(公告)日：2019-10-22
申请号：US15764081
申请日：2016-09-26
Applicant: Yanmar Co., Ltd.
Inventor： Seiji Yukishige , Ryuichiro Murakami , Hiroyuki Nakagawa
Abstract: A diesel engine including: a cam shaft driven by a crankshaft, a fuel injection pump driving cam provided on the cam shaft and configured to drive a fuel injection pump, and an intake cam provided on the cam shaft and configured to drive an intake valve. The fuel injection pump driving cam has a maximum radius portion, a minimum radius portion, an intermediate portion having a radius smaller than that of the maximum radius portion and larger than that of the minimum radius portion, and a slant portion where the intermediate portion shifts to the minimum radius portion in a reverse rotation direction of the driving cam. The position where the intermediate portion shifts to the slant portion begins after the intake valve is opened to an extent corresponding to at least half of a maximum lift of the intake valve.
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公开(公告)号：US10449851B2
公开(公告)日：2019-10-22
申请号：US15749372
申请日：2016-07-28
Applicant: Yanmar Co., Ltd.
Inventor： Daisuke Takii
Abstract: A work vehicle such as a tractor including an engine and a fan shroud. The engine includes a diesel particulate filter (DPF) for purifying exhaust gas. The fan shroud is disposed ahead of the engine. The DPF includes a soot filter for collecting PM (particulate matter) in exhaust gas. The engine further includes a pressure difference sensor for detecting a pressure difference between an upstream side and a downstream side of the soot filter of the DPF in a direction in which exhaust gas flows. The pressure difference sensor is supported by the fan shroud.
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