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公开(公告)号：US09784153B2
公开(公告)日：2017-10-10
申请号：US14614483
申请日：2015-02-05
Applicant: KUBOTA Corporation
Inventor： Shunji Okano , Naoki Inoue , Tamotsu Ohashi , Hiroyuki Kawasoe
CPC classification number: F01N1/083 , F01N1/089 , F01N3/2807 , F01N3/2885 , F01N13/10 , F01N2230/04 , F01N2470/02 , F02B23/08 , F02B31/02 , F02F1/42 , F02M61/145 , Y02T10/125 , Y02T10/146
Abstract: An engine capable of reducing the content of hydrocarbon in exhaust gas is provided. When viewed parallel to cylinder center axes, tangential virtual lines extending from endpoints of curved port central axes along tangent lines of the endpoints pass intake valve ports, straight port central axes extending from the endpoints of the curved port central axes are further away from a partition wall than the tangential virtual lines, and intake air bent through curved ports passes straight ports and is sucked through the intake valve ports along the wall between the cylinders.
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公开(公告)号：US08997724B2
公开(公告)日：2015-04-07
申请号：US14188159
申请日：2014-02-24
Applicant: KUBOTA Corporation
Inventor： Eishin Nakashima , Shunji Okano , Hiroyuki Kawasoe , Tamotsu Ohashi , Naoki Inoue , Yuki Ozaki
CPC classification number: F02B75/12 , F02B23/08 , Y02T10/125
Abstract: A spark-ignition engine capable of reducing the content of hydrocarbon in exhaust gas is provided. When viewed from a direction parallel to a cylinder center axis, given a central virtual line passing a squish area maximum-width section and the center of a combustion chamber recessed section, and one area a and the other area b divided by the central virtual line, an intake valve port or an exhaust valve port is opened in one area of any opposed section of opposed sections of the combustion chamber recessed section. A spark-plug attachment hole is formed in the other area of the opposed section, such that, when viewed from the direction parallel to the cylinder center axis, a spark discharge section at a tip of a spark plug does not overlap the central virtual line.
Abstract translation: 提供能够降低废气中的烃含量的火花点火发动机。 当从平行于气缸中心轴线的方向观察时，给出通过挤压区域最大宽度部分和燃烧室凹部的中心的中心虚拟线，以及由中心虚拟线分开的一个区域a和另一个区域b 在燃烧室凹部的相对部分的相对部分的一个区域中打开进气门口或排气门口。 在相对部分的另一区域中形成火花塞附接孔，使得当从平行于气缸中心轴线的方向观察时，在火花塞尖端处的火花放电部分不与中心虚线 。
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公开(公告)号：US12234786B2
公开(公告)日：2025-02-25
申请号：US18663584
申请日：2024-05-14
Applicant: KUBOTA CORPORATION
Inventor： Michisuke Iga , Tomotaka Tanaka , Kosuke Aoki , Hiroyuki Kawasoe , Kengo Hidaka
Abstract: Provided is an engine control device and an engine device that enable stable self-travelling of the engine in a limp home mode. The engine control device includes a revolution speed detection unit that detects revolution speed of the engine, and an arithmetic unit that calculates an opening of a throttle valve opened by an electronic throttle mechanism, and an injection amount of fuel injected by injectors. In an operation of the engine in the limp home mode, in a case where the revolution speed of the engine detected by the revolution speed detection unit exceeds a predetermined limiting value, the arithmetic unit performs an operation to suppress injection of the fuel to be injected by the injectors.
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公开(公告)号：US10287953B2
公开(公告)日：2019-05-14
申请号：US15579761
申请日：2016-03-01
Applicant: KUBOTA Corporation
Inventor： Yuki Ozaki , Naoki Inoue , Tamotsu Ohashi , Kengo Hidaka , Hiroyuki Kawasoe , Masaru Hayashida , Shunji Okano , Michisuke Iga
Abstract: An exhaust purifying apparatus is provided, that can be manufactured at low manufacturing costs and is capable exhibiting high exhaust purifying performance. The exhaust purifying apparatus includes an exhaust passage, and an exhaust purifying member disposed in the exhaust passage. The exhaust purifying member is made of stainless steel. The surface of the stainless steel material is not covered with a catalyst coat containing a catalyst component, so that the surface of the stainless steel material is brought into contact with exhaust. The exhaust purifying member is made of precipitation hardening stainless steel and/or austenitic stainless steel.
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