Patents by Inventor Katsuhiro Ashihara
Katsuhiro Ashihara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10900393Abstract: A control device controls an internal combustion engine including: an elastic wave sensor arranged and configured to output a signal responsive to the strength of an acoustic emission wave produced at a sliding portion; and a variable oil pump. The control device is configured to execute an oil pressure control such that the oil pressure approaches a target oil pressure according to an engine operating condition. This oil pressure control includes a first pressure-increase processing executed where an AE correlation value correlated with the strength or occurrence frequency of the acoustic emission wave detected by the elastic wave sensor is greater than a first threshold value. The first pressure-increase processing increases the target oil pressure associated with a first engine operating condition present when the AE correlation value becomes greater than the first threshold value, as compared to when the AE correlation value is not greater than that.Type: GrantFiled: January 4, 2019Date of Patent: January 26, 2021Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., Ltd.Inventors: Yusuke Morita, Motoichi Murakami, Takeshi Fukui, Yuichiro Kajiki, Katsuhiro Ashihara, Alan Hase, Takashi Izumi
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Publication number: 20190226366Abstract: A control device controls an internal combustion engine including: an elastic wave sensor arranged and configured to output a signal responsive to the strength of an acoustic emission wave produced at a sliding portion; and a variable oil pump. The control device is configured to execute an oil pressure control such that the oil pressure approaches a target oil pressure according to an engine operating condition. This oil pressure control includes a first pressure-increase processing executed where an AE correlation value correlated with the strength or occurrence frequency of the acoustic emission wave detected by the elastic wave sensor is greater than a first threshold value. The first pressure-increase processing increases the target oil pressure associated with a first engine operating condition present when the AE correlation value becomes greater than the first threshold value, as compared to when the AE correlation value is not greater than that.Type: ApplicationFiled: January 4, 2019Publication date: July 25, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., Ltd.Inventors: Yusuke MORITA, Motoichi MURAKAMI, Takeshi FUKUI, Yuichiro KAJIKI, Katsuhiro ASHIHARA, Alan HASE, Takashi IZUMI
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Patent number: 9964139Abstract: Provided is a slide bearing 1 with which friction can be reduced and the total amount of effluent oil can be reduced. In the slide bearing in which halved members, made by dividing a cylinder in two in a direction parallel to the axial direction are disposed vertically, grooves are provided at an end of the axial direction of the lower halved member in the circumferential direction and the depth of the groove in the radial direction is changed corresponding to the circumstance direction and the gradient of the depth (d) of the groove in the radial direction is configured in asymmetry using the center (the bearing angle (?) is (?2)) in the circumferential direction as a symmetry axis.Type: GrantFiled: November 7, 2014Date of Patent: May 8, 2018Assignee: TAIHO KOGYO CO., LTD.Inventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata
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Patent number: 9964140Abstract: Provided is a slide bearing with which friction can be reduced and the total amount of effluent oil can be reduced. In the slide bearing in which halved members, made by dividing a cylinder in two in a direction parallel to the axial direction are disposed vertically, grooves are provided at an end of the axial direction of the lower halved member in the circumferential direction and the height of a peripheral edge part configured at the outside of the groove in the axial direction is changed corresponding to the circumstance direction and the gradient of the height of the peripheral edge part is configured in asymmetry using the center (the bearing angle (?) is (?2)) in the circumferential direction as a symmetry axis.Type: GrantFiled: November 7, 2014Date of Patent: May 8, 2018Assignee: TAIHO KOGYO CO., LTD.Inventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata
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Patent number: 9958007Abstract: A slide bearing, in which halved members, made by dividing a cylinder parallel to the axial direction are disposed vertically, includes a groove circumferentially provided at the axial end of a lower halved member and a recess provided on an axially outer periphery of the groove, where a circumferential length of the recess is formed to be shorter than a length of the groove. The recess is formed such that its upstream end in the axial rotation direction aligns with an upstream end in the rotation direction of the groove. The recess is formed such that its downstream end in the rotation direction is located upstream relative to the circumferential center of the groove.Type: GrantFiled: January 16, 2015Date of Patent: May 1, 2018Assignee: TAIHO KOGYO CO., LTD.Inventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata
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Patent number: 9933007Abstract: Provided is a sliding bearing that has a bearing inner peripheral surface covered by a resin overlay layer configured from a binder resin and a solid lubricant and/or hard substance, reduces the running-in time during an operation start, and can obtain the effect of increasing wear resistance and the effect of reducing friction. In the sliding bearing, halved members resulting from halving a cylinder parallel to the axial direction are disposed at the top and bottom, the inner peripheral surfaces of the top and bottom halved members are covered by a resin overlay layer configured from a binder resin and a solid lubricant and/or hard substance, and a fine groove is provided to an axial-direction end of the bottom halved member in the peripheral direction from the mating surface at the downstream side in the rotational direction to a predetermined bearing angle.Type: GrantFiled: January 13, 2015Date of Patent: April 3, 2018Assignees: TAIHO KOGYO CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata, Akihiro Honda, Motoichi Murakami
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Patent number: 9879725Abstract: Provided is a slide bearing with which friction can be reduced and the total amount of effluent oil can be reduced. In the slide bearing in which the halved members made by dividing the cylinder in two in the direction parallel to the axial direction are disposed vertically, the narrow grooves are provided at an end of the lower halved member in the circumferential direction from a mating surface on a downstream side of a rotation direction to a predetermined bearing angle and peripheral edge parts are provided outside the narrow grooves in an axial direction.Type: GrantFiled: April 25, 2014Date of Patent: January 30, 2018Assignees: TAIHO KOGYO CO., LTD., TOYOYTA JIDOSHA KABUSHIKI KAISHAInventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata, Akihiro Honda, Motoichi Murakami
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Patent number: 9657769Abstract: Provided is a slide bearing with which friction-reducing effects are obtained and the total volume of effluent oil is limited. In a slide bearing an end of the narrow groove on a downstream side of the rotation direction is disposed at the position which is adjacent to a mating surface on the downstream side of the rotation direction and not communicated with the mating surface on the downstream side of the rotation direction and an end of the narrow groove on an upstream side of the rotation direction is disposed at the position which is the upstream side from the end on the downstream side of the rotation direction and is rotated by an angle no more than 90 degrees from the mating surface on the downstream side of the rotation direction.Type: GrantFiled: March 19, 2014Date of Patent: May 23, 2017Assignees: TAIHO KOGYO CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata, Akihiro Honda, Motoichi Murakami
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Publication number: 20160333922Abstract: Provided is a sliding bearing that has a bearing inner peripheral surface covered by a resin overlay layer configured from a binder resin and a solid lubricant and/or hard substance, reduces the running-in time during an operation start, and can obtain the effect of increasing wear resistance and the effect of reducing friction. In the sliding bearing, halved members resulting from halving a cylinder parallel to the axial direction are disposed at the top and bottom, the inner peripheral surfaces of the top and bottom halved members are covered by a resin overlay layer configured from a binder resin and a solid lubricant and/or hard substance, and a fine groove is provided to an axial-direction end of the bottom halved member in the peripheral direction from the mating surface at the downstream side in the rotational direction to a predetermined bearing angle.Type: ApplicationFiled: January 13, 2015Publication date: November 17, 2016Applicants: TAIHO KOGYO CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Katsuhiro ASHIHARA, Yuichiro KAJIKI, Hiroki TAKATA, Akihiro HONDA, Motoichi MURAKAMI
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Publication number: 20160333930Abstract: A slide bearing, in which halved members, made by dividing a cylinder parallel to the axial direction are disposed vertically, includes a groove circumferentially provided at the axial end of a lower halved member and a recess provided on an axially outer periphery of the groove, where a circumferential length of the recess is formed to be shorter than a length of the groove. The recess is formed such that its upstream end in the axial rotation direction aligns with an upstream end in the rotation direction of the groove. The recess is formed such that its downstream end in the rotation direction is located upstream relative to the circumferential center of the groove.Type: ApplicationFiled: January 16, 2015Publication date: November 17, 2016Inventors: Katsuhiro ASHIHARA, Yuichiro KAJIKI, Hiroki TAKATA
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Patent number: 9470266Abstract: Provided is a slide bearing with which friction-reducing effects can be obtained and the total volume of effluent oil can be limited. A slide bearing in which halved members made by dividing a cylinder in two in a direction parallel to the axial are disposed vertically, wherein narrow grooves are provided at the ends of the slide bearing in the axial direction, the narrow grooves extending in the circumferential direction from the mating surface on the downstream side of the rotation direction to a specified bearing angle is an angle rotated in the range of ?0 degree to ?90 degrees from the mating surface on the downstream side in the rotation direction (bearing angle of 180 degrees) towards the upstream side in the rotation direction. In other words, the bearing angle is the range of 180 degrees to 270 degrees.Type: GrantFiled: February 21, 2014Date of Patent: October 18, 2016Assignees: TAIHO KOGYO CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Katsuhiro Ashihara, Yuichiro Kajiki, Hiroki Takata, Akihiro Honda, Motoichi Murakami
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Publication number: 20160298676Abstract: Provided is a slide bearing 1 with which friction can be reduced and the total amount of effluent oil can be reduced. In the slide bearing in which halved members, made by dividing a cylinder in two in a direction parallel to the axial direction are disposed vertically, grooves are provided at an end of the axial direction of the lower halved member in the circumferential direction and the depth of the groove in the radial direction is changed corresponding to the circumstance direction and the gradient of the depth (d) of the groove in the radial direction is configured in asymmetry using the center the bearing angle (?) is (?2)) in the circumferential direction as a symmetry axis.Type: ApplicationFiled: November 7, 2014Publication date: October 13, 2016Inventors: Katsuhiro Ashihara, Yuichiro KAJIKI, Hiroki TAKATA
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Publication number: 20160273577Abstract: Provided is a slide bearing with which friction can be reduced and the total amount of effluent oil can be reduced. In the slide bearing in which halved members, made by dividing a cylinder in two in a direction parallel to the axial direction are disposed vertically, grooves are provided at an end of the axial direction of the lower halved member in the circumferential direction and the height of a peripheral edge part configured at the outside of the groove in the axial direction is changed corresponding to the circumstance direction and the gradient of the height of the peripheral edge part is configured in asymmetry using the center (the bearing angle (?) is (?2)) in the circumferential direction as a symmetry axis.Type: ApplicationFiled: November 7, 2014Publication date: September 22, 2016Inventors: Katsuhiro Ashihara, Yuichiro KAJIKI, Hiroki TAKATA
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Publication number: 20160195127Abstract: Provided is a slide bearing with which friction-reducing effects are obtained and the total volume of effluent oil is limited. In a slide bearing an end of the narrow groove on a downstream side of the rotation direction is disposed at the position which is adjacent to a mating surface on the downstream side of the rotation direction and not communicated with the mating surface on the downstream side of the rotation direction and an end of the narrow groove on an upstream side of the rotation direction is disposed at the position which is the upstream side from the end on the downstream side of the rotation direction and is rotated by an angle no more than 90 degrees from the mating surface on the downstream side of the rotation direction.Type: ApplicationFiled: March 19, 2014Publication date: July 7, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.Inventors: Katsuhiro ASHIHARA, Yuichiro KAJIKI, Hiroki TAKATA, Akihiro HONDA, Motoichi MURAKAMI
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Publication number: 20160102707Abstract: Provided is a slide bearing with which friction can be reduced and the total amount of effluent oil can be reduced. In the slide bearing in which the halved members made by dividing the cylinder in two in the direction parallel to the axial direction are disposed vertically, the narrow grooves are provided at an end of the lower halved member in the circumferential direction from a mating surface on a downstream side of a rotation direction to a predetermined bearing angle and peripheral edge parts are provided outside the narrow grooves in an axial direction.Type: ApplicationFiled: April 25, 2014Publication date: April 14, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.Inventors: Katsuhiro ASHIHARA, Yuichiro KAJIKI, Hiroki TAKATA, Akihiro HONDA, Motoichi MURAKAMI
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Publication number: 20150377285Abstract: Provided is a slide bearing with which friction-reducing effects can be obtained and the total volume of effluent oil can be limited. A slide bearing in which halved members made by dividing a cylinder in two in a direction parallel to the axial are disposed vertically, wherein narrow grooves are provided at the ends of the slide bearing in the axial direction, the narrow grooves extending in the circumferential direction from the mating surface on the downstream side of the rotation direction to a specified bearing angle is an angle rotated in the range of ?0 degree to ?90 degrees from the mating surface on the downstream side in the rotation direction (bearing angle of 180 degrees) towards the upstream side in the rotation direction. In other words, the bearing angle is the range of 180 degrees to 270 degrees.Type: ApplicationFiled: February 21, 2014Publication date: December 31, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.Inventors: Katsuhiro ASHIHARA, Yuichiro KAJIKI, Hiroki TAKATA, Akihiro HONDA, Motoichi MURAKAMI
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Patent number: 8714823Abstract: A sliding bearing 5 is composed of a pair of halved bearings 11, 12 and is provided with crush reliefs 11E, 12E in positions adjoining abutment surfaces 11B, 12B of these halved bearings. Chamfered portions 11D, 12D are formed in inward edge portions of the above-described abutment surfaces 11B, 12B, and a dust pocket 15 is formed on the middle side of the chamfered portions 11D, 12D. The relative angle ? formed by the above-described crush reliefs 11E, 12E with sliding surfaces 13 in positions adjoining the crush reliefs 11E, 12E is set at 0.69° or more.Type: GrantFiled: April 17, 2009Date of Patent: May 6, 2014Assignee: Taiho Kogyo Co., Ltd.Inventors: Yukiyasu Taguchi, Masaru Kondo, Takashi Tomikawa, Katsuhiro Ashihara, Masao Takahashi
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Patent number: 8556514Abstract: A sliding support structure includes: a support member (12; 106) and a shaft member (10; 120) that relatively rotates with respect to the support member (12; 106) wherein lubricating oil is supplied to between a sliding surface of the shaft member and a sliding surface of the support member, the support member (12; 106) has a sliding surface portion (x) that corresponds to a load concentrating portion between the shaft member (10; 120) and the support member (12; 106), and sliding surface regions (Ya, Yb) that are higher in oil repellency than the sliding surface portion are respectively provided on upstream and downstream sides of the sliding surface portion in a flow direction of the lubricating oil.Type: GrantFiled: August 31, 2010Date of Patent: October 15, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd.Inventors: Motoichi Murakami, Shoji Miyazaki, Yoshiki Ariizumi, Ryuji Koike, Naoto Koyamaishi, Shuzou Sanda, Shigeru Hotta, Katsuhiro Ashihara, Yasuhiro Hikita
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Publication number: 20120148180Abstract: A sliding support structure includes: a support member (12; 106) and a shaft member (10; 120) that relatively rotates with respect to the support member (12;106) wherein lubricating oil is supplied to between a sliding surface of the shaft member and a sliding surface of the support member, the support member (12; 106) has a sliding surface portion (x) that corresponds to a load concentrating portion between the shaft member (10; 120) and the support member (12; 106), and sliding surface regions (Ya, Yb) that are higher in oil repellency than the sliding surface portion are respectively provided on upstream and downstream sides of the sliding surface portion in a flow direction of the lubricating oil.Type: ApplicationFiled: August 31, 2010Publication date: June 14, 2012Applicants: Taiho Kogyo Co., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motoichi Murakami, Shoji Miyazaki, Yoshiki Ariizumi, Ryuji Koike, Naoto Koyamaishi, Shuzou Sanda, Shigeru Hotta, Katsuhiro Ashihara, Yasuhiro Hikita
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Publication number: 20110002563Abstract: A sliding bearing 5 is composed of a pair of halved bearings 11, 12 and is provided with crush reliefs 11E, 12E in positions adjoining abutment surfaces 11B, 12B of these halved bearings. Chamfered portions 11D, 12D are formed in inward edge portions of the above-described abutment surfaces 11B, 12B, and a dust pocket 15 is formed on the middle side of the chamfered portions 11D, 12D. The relative angle ? formed by the above-described crush reliefs 11E, 12E with sliding surfaces 13 in positions adjoining the crush reliefs 11E, 12E is set at 0.69° or more. Foreign substances 14 in a lubricating oil are discharged from openings of side portions of the crush reliefs 11E, 12E to the outside and are prevented from easily entering the sliding surfaces 13. A sliding bearing excellent in seizure resistance compared to that of conventional art can be provided.Type: ApplicationFiled: April 17, 2009Publication date: January 6, 2011Inventors: Yukiyasu Taguchi, Masaru Kondo, Takashi Tomikawa, Katsuhiro Ashihara, Masao Takahashi