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公开(公告)号：WO2023034888A1
公开(公告)日：2023-03-09
申请号：PCT/US2022/075800
申请日：2022-09-01
Applicant: CUMMINS INC.
Inventor： VALENTIN, Steven , WALTERS, Daniel A. , TREVINO, Juan Pablo Acosta , BENHAM, Eric A. , SHORT, Bryce A. , PRATER, Russell
IPC: F04B1/0538 , F02M59/10 , F02M59/44
Abstract: A camshaft having a length that spans along a longitudinal axis. The camshaft has a front bearing journal opposite a rear bearing journal, wherein at least one of the front and/or the rear bearing journals has an asymmetric outer profile that extends along the longitudinal axis.
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公开(公告)号：WO2022101301A1
公开(公告)日：2022-05-19
申请号：PCT/EP2021/081302
申请日：2021-11-10
Applicant: DELPHI TECHNOLOGIES IP LIMITED , BORGWARNER FRANCE SAS
Inventor： JONES, David
Abstract: A fuel pump assembly (110) for an internal combustion engine comprises a plunger (114) arranged to reciprocate within a plunger bore (132) under the influence of a drive arrangement (123) driven by means of a drive shaft (18), to perform a pumping cycle comprising a pumping stroke and a return stroke, the pumping stroke comprising movement of the plunger (114) from a bottom dead centre (BDC) position to a top dead centre (TDC) position to pressurise fuel within a pump chamber (36), and the return stroke comprising movement of the plunger (114) from the TDC position to the BDC position. The fuel pump assembly comprises a spring assembly including a return spring (154) configured to apply a return force to the plunger (114) to effect the return stroke, wherein the return spring (154) is cooperable, at a first end (62), with a first member (150) coupled to the plunger (114) and movable at a first speed dependent on the speed of rotation of the drive shaft (18) and, at a second end (64), with a second member (70) which is movable at a damped speed relative to the first speed so that the return spring has a variable stroke length depending on the speed of rotation of the drive shaft (18).
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公开(公告)号：WO2021229862A1
公开(公告)日：2021-11-18
申请号：PCT/JP2021/003643
申请日：2021-02-02
Applicant: 日立Ａｓｔｅｍｏ株式会社
Abstract: 弁体の傾きや偏心の抑制及び弁体の応答性低下の抑制を図りつつ、製造が容易な弁機構及びそれを備えた高圧燃料供給ポンプを提供する。 吸入弁機構３００は、弁シート部３１ｂに着座及び離座が可能な吸入弁３０と、吸入弁３０の開弁方向への移動を規制する吸入弁ストッパ３２とを備える。吸入弁３０は、弁シート部３１ｂに着座する弁本体部７１と、弁本体部７１における弁シート部３１ｂよりも径方向内側の位置から吸入弁ストッパ３２側に向かって延在する筒状の被ガイド部７２とを有する。吸入弁ストッパ３２は、被ガイド部７２の先端部７２ｃに当接することで吸入弁３０の開弁方向への移動を規制するストッパ本体部８１と、ストッパ本体部８１から弁シート部３１ｂ側に向かって延在し、被ガイド部７２が摺動することで吸入弁３０の移動を弁シート部３１ｂに対する接離方向に案内するガイド部としての筒状部８２とを有する。
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公开(公告)号：WO2021167078A1
公开(公告)日：2021-08-26
申请号：PCT/JP2021/006412
申请日：2021-02-19
Applicant: 三菱重工エンジン＆ターボチャージャ株式会社
Inventor： 小川 久雄
Abstract: カムの最大リフト量の増加及び燃料噴射能力の低下を抑制しつつ、燃料の圧力を高くする。カムは、プランジャの軸方向への移動により燃料供給室内に供給された燃料を増圧する燃料噴射ポンプに用いられるカムであって、プランジャが燃料供給室内の燃料を増圧するまでのプリストローク期間における、カムが一定速度で回転する際のプランジャの軸方向における速度の上昇率が、第１上昇率となるような第１カム面と、プランジャが燃料供給室内の燃料の増圧を開始してからの期間である増圧期間における、カムが一定速度で回転する際のプランジャの軸方向における速度の上昇率が、第２上昇率となるような第２カム面と、含み、第１上昇率が第２上昇率より高くなるように設定されている。
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公开(公告)号：WO2021088324A1
公开(公告)日：2021-05-14
申请号：PCT/CN2020/086386
申请日：2020-04-23
Applicant: 重庆红江机械有限责任公司
Abstract: 一种船用低速机多缸组合式高压油泵，包括：泵体组件（1），包括：泵体（101）和轴瓦（102），泵体（101）具有第一水平中孔和多个第一竖直中孔，第一水平中孔和第一竖直中孔相连通；泵盖（2），其安装在泵体（101）的上侧，泵盖（2）具有相连通的第二水平中孔（201）和多个第二竖直中孔；在第一竖直中孔和第二竖直中孔所形成的竖直中孔内安装有：柱塞偶件（4）、柱塞弹簧（6）、下弹簧座（7）和导向活塞组件（8）；柱塞偶件（4）螺接于第二竖直中孔内，柱塞偶件（4）内安装有进出油阀组件（9）；安装于泵体（101）的第一水平中孔内的凸轮轴（10）；电控比例阀内设置有冷却循环油路；泵盖（2）内设置有混合油路。通过电子控制、油路分层和优化密封结构提高高压油泵供油调节灵敏度和重油可靠性，同时拓展低速机重油的应用范围，满足750Cst重油使用环境。
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Patent Agency Ranking
公开(公告)号：WO2021008648A1
公开(公告)日：2021-01-21
申请号：PCT/DE2020/100482
申请日：2020-06-09
Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventor： GEYER, Norbert , JUNKER, Marco
IPC: F04B1/0426 , F02M59/10 , F04B1/0439 , F16J1/10 , F04B9/04
Abstract: Vorgeschlagen ist ein Rollenstößel (1) für eine Kraftstoffhochdruckpumpe, mit einem Gehäuse (2), bei dessen antriebsseitiger Ringstirn (3) eine Nockenanlaufrolle (4) aufgenommen ist, wobei an einem Innenmantel (28) des Gehäuses (2), von der antriebsseitigen Ringstirn (3) aus gesehen, nach der Nockenanlaufrolle (4), ein Brückenstück (5) sitzt, dessen Außenstirn (6) eine Anlage (7) für einen Pumpenkolben hat, wobei von der Anlage (7) ein separater Adapterbolzen (8) über die abtriebsseitige Ringstirn (29) des Gehäuses (2) hinausragt, wobei eine brückenstückferne Endstirn (9) des Adapterbolzens (8) als unmittelbare Anlage für den Pumpenkolben dient und wobei bei der abtriebsseitigen Ringstirn (29) des Gehäuses (2) ein den Adapterbolzen (8) mit seiner Bohrung (10) umfassender und haltender Ringteller (11) sitzt.
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7.发明申请
公开(公告)号：WO2020263216A1
公开(公告)日：2020-12-30
申请号：PCT/US2019/038723
申请日：2019-06-24
Applicant: GT TECHNOLOGIES
Inventor： BRUNE, John, E. , GOSSMAN, Luke , LANDIS, Dennis
Abstract: A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly comprises a tappet body defining a pair of apertures and at least one seat, and a follower assembly. The follower assembly has a shaft, a first bearing, and a second bearing, each supported on the shaft for engaging the camshaft lobe. An intermediate element is further supported on the shaft between the first and second bearings and has a platform for engaging the fuel pump assembly. The intermediate element is at least partially disposed in the at least one seat of the tappet body and the shaft is disposed in the pair of apertures of the tappet body.
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公开(公告)号：WO2020177928A1
公开(公告)日：2020-09-10
申请号：PCT/EP2020/025106
申请日：2020-03-02
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： MOHADIKAR, Kapil , SHIRSAT, Chetankumar
Abstract: A pump actuator for use between a cam and a pump is disclosed. The pump actuator comprises a pump actuator body having a structural enhancing feature. The pump actuator body comprises a pad defined between a plunger facing surface and an opposite roller facing surface. The plunger facing surface is recessed into the pump actuator body and offset from a radial end. The pump actuator body further includes a cylindrical wall defined between the radial end and the plunger facing surface. The structural enhancing feature is formed on the pad on the plunger facing surface. The structural enhancing feature increases load carrying capacity of the pump actuator body.
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公开(公告)号：WO2020157538A1
公开(公告)日：2020-08-06
申请号：PCT/IB2019/050669
申请日：2019-01-28
Applicant: WÄRTSILÄ SERVICES SWITZERLAND LTD
Inventor： BACHMANN, Daniel
Abstract: The fuel injection system for introducing gaseous fuel into the cylinders (2) of a multi-cylinder piston engine (1) comprises a gas supply line (3) for supplying gaseous fuel at a first pressure level, and for each cylinder (2) of the engine (1) at least one gas injector (4), which is configured to inject gaseous fuel directly into the cylinder (2), and a hydraulically actuatable gas compression device (5), which is configured to receive gaseous fuel at the first pressure level, to raise the pressure of the gaseous fuel to a second pressure level by means of a movable compression piston (9), and to supply the gaseous fuel at the second pressure level towards the at least one gas injector (4).
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公开(公告)号：WO2019201640A1
公开(公告)日：2019-10-24
申请号：PCT/EP2019/058784
申请日：2019-04-08
Applicant: ROBERT BOSCH GMBH
Inventor： SHI, Kai
Abstract: The present application discloses a contact mating structure between a cam (201, 202) and a tappet assembly (500) and a plunger pump using the contact mating structure, wherein the cam (201, 202) is formed in a rotatable shaft, the tappet assembly (500) is movable perpendicularly relative to the rotatable shaft, the contact mating structure comprises a cam follower (800) pivotally provided at one end of the tappet assembly (500), and the cam follower (800) has a contact side (820) for contacting the profile of the cam (201, 202), wherein viewed in a cross-section perpendicular to a central axis of rotation of the rotatable shaft, the contact side (820) is concaved towards the cam (201, 202).
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