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公开(公告)号：US20190063311A1
公开(公告)日：2019-02-28
申请号：US15687836
申请日：2017-08-28
CPC分类号： F02B75/32 , F02B47/08 , F02B75/048 , F02D41/0047 , F02D41/008 , F02M26/43 , F16C3/08 , F16C3/28 , F16C11/02 , F16C2360/22
摘要： A four stroke internal combustion engine with dedicated exhaust gas recirculation and method of operating such engine, wherein the engine comprises a plurality of combustion cylinders including main cylinders and a dedicated exhaust gas recirculation cylinder, wherein each cylinder includes a piston; a crankshaft, which is rotatable in a direction, and defines a main crankshaft axis, and includes a plurality of crankpins. Each of the crankpins is coupled to at least one of the pistons. The crankpins affixed to the pistons of the main cylinders are spaced at an interval around the main crankshaft axis. The crankpin affixed to the piston of the dedicated exhaust gas recirculation cylinder is spaced at an offset of 5 to 50 degrees from the interval in either direction relative to the direction of crankshaft rotation.
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公开(公告)号：US20180172064A1
公开(公告)日：2018-06-21
申请号：US15819462
申请日：2017-11-21
发明人： Koichi ONO , Yoshihiko UKAI , Keiichi MATSUNAGA
摘要： A method for manufacturing a crankshaft including a pin portion and a journal portion includes: a preparation process of preparing a die that is formed such that a parting plane of the pin portion and a parting plane of the journal portion are spaced apart from each other in a stamping direction; and a stamping process of forming a shaft portion including the pin portion and the journal portion by stamping a blank with the die.
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公开(公告)号：US20180156263A1
公开(公告)日：2018-06-07
申请号：US15735496
申请日：2016-06-06
CPC分类号： F16C3/20 , F16C3/08 , F16C3/14 , F16C2360/22 , F16F15/24 , F16F15/283
摘要： A crankshaft includes journals serving as a central axis of rotation, crank pins decentered from the journals, and crank arms connecting the journals and the crank pins. Some or all of the crank arms have counterweights integrated therewith. At least one of the crank arms has a recess in a crank pin facing surface. The crank arm includes ribs formed respectively in two side portions of the recess along a periphery of the crank arm.
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公开(公告)号：US20170167529A1
公开(公告)日：2017-06-15
申请号：US15325112
申请日：2015-07-14
发明人： Koichiro ISHIHARA , Ken YOSHINO , Kunihiro YABUNO
摘要： A load due to combustion pressure is applied to each of the crank pins via a connecting rod in a direction from the axis of a piston pin to the axis of the crank pin. Each of the crank arms includes a recess in a surface adjacent to the journal, in a region inward of a peripheral region along the edge of the surface. The recess extends along the peripheral region, and is asymmetric with respect to a crank arm centerline connecting the axis of each of the crank pins to the axis of each of the journals. Each of the crank arms has a maximum flexural rigidity at a point of time when the load onto each of the crank pins due to the combustion pressure reaches a maximum. The crankshaft has a reduced weight and an increased torsional rigidity in combination with an increased flexural rigidity.
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公开(公告)号：US20160250679A1
公开(公告)日：2016-09-01
申请号：US15031294
申请日：2014-11-19
发明人： Kenji TAMURA , Junichi OKUBO , Koichiro ISHIHARA , Ken YOSHINO , Kunihiro YABUNO , Hiroyuki KUROKAWA , Tomohisa YAMASHITA , Sho TAKAMOTO
IPC分类号： B21K1/08
CPC分类号： B21K1/08 , B21J5/025 , B23P15/00 , B23P2700/07 , F16C3/08 , F16C2220/46
摘要： A method for producing a forged crankshaft includes a die forging step, a trimming step, and an excess projecting portion bending step. The die forging step forms a finish forged blank with flash, the finish forged blank including a shape of the crankshaft, in which crank arms have excess projecting portions at outer peripheries of side portions thereof near a crank pin, the excess projecting portions projecting from the outer peripheries. The trimming step removes the flash from the finish forged blank formed in the die forging step. The excess projecting portion bending step bends the excess projecting portions of the crank arms toward a journal-side surface of the crank arm by inserting a first die having a U-shape from a direction of eccentricity of the crank pin to the crankshaft obtained by removing the flash in the trimming step.
摘要翻译： 锻造曲轴的制造方法包括模锻步骤，修整步骤和多余的突出部弯曲步骤。 模锻步骤形成具有闪光的精加工的坯件，精加工的坯件包括曲轴的形状，其中曲柄臂在曲柄销附近的侧部的外周具有多余的突出部分，多余的突出部分从 外围。 修整步骤从在锻模步骤中形成的精加工锻造坯料中去除闪光。 通过从曲柄销的偏心方向插入具有U形的第一模具到通过去除了曲柄轴而获得的曲轴，多余的突出部分弯曲步骤使曲柄臂的多余的突出部分朝向曲柄臂的轴颈侧表面弯曲 闪光灯在修整步骤中。
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公开(公告)号：US20160084295A1
公开(公告)日：2016-03-24
申请号：US14492714
申请日：2014-09-22
发明人： Dale Edward Murrish , Edward R. Romblom , Brian J. McClory , Ronald M. Tkac , Donald J. Perella
CPC分类号： F16C3/08 , B22C9/10 , B22C9/103 , B22C9/22 , B22D25/02 , B22D29/001 , C22C38/00 , F16F15/283
摘要： A crankshaft includes a pin bearing journal, and a counterweight. The pin bearing journal defines a hollow pin core. The hollow pin core includes a first pin core section and a second pin core section, and an enlarged central section disposed between the first pin core section and the second pin core section. The first and second pin core sections each define a cross section having a first and second cross sectional area respectively, and the enlarged central section defines a third cross section defining a third cross sectional area, with the third cross sectional area larger than the first and second cross sectional areas. An isolation window extends through the counterweight. The crankshaft is cast from a high shrink steel alloy having a shrinkage factor equal to or greater than 1%. The enlarged central section and the isolation window improve the castability of the high shrink steel alloy.
摘要翻译： 曲轴包括销轴承轴颈和配重。 销轴承轴颈定义了空心销芯。 中空销芯包括第一销芯部分和第二销芯部分，以及设置在第一销芯部分和第二销钉部分之间的扩大中心部分。 第一和第二销芯部分分别限定具有第一和第二横截面面积的横截面，并且扩大的中心部分限定限定第三横截面积的第三横截面，第三横截面积大于第一横截面积 第二横截面。 隔离窗延伸穿过配重。 曲轴由收缩率等于或大于1％的高收缩钢合金铸造。 扩大的中心部分和隔离窗提高了高收缩钢合金的铸造性能。
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公开(公告)号：US20160084294A1
公开(公告)日：2016-03-24
申请号：US14489568
申请日：2014-09-18
发明人： Ronald M. TKAC , Edward R. ROMBLOM
CPC分类号： F16C3/08 , B22C9/10 , B22C9/103 , B22C9/108 , F16C2220/02
摘要： A core structure for a cast crankshaft is provided which eliminates the need to machine and install plugs in one or more of the main bearing lightening holes. This is achieved by configuring the core structure to take out all but a thin wall of material in the center of the main bearing journals.
摘要翻译： 提供了一种用于铸造曲轴的芯结构，其不需要在一个或多个主轴承减轻孔中加工和安装插头。 这可以通过配置核心结构来取出主轴承轴颈中心的材料薄壁。
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公开(公告)号：US20150321245A1
公开(公告)日：2015-11-12
申请号：US14647472
申请日：2013-12-09
发明人： Hiroaki TAHIRA , Kisung KIM , Junichi OKUBO
CPC分类号： B21K1/08 , B21J5/025 , B21J5/12 , F16C3/08 , F16C2204/64 , F16C2220/46 , Y10T74/2173
摘要： A forged crankshaft (1) includes a carbon steel containing S, wherein in a portion corresponding to a machined outer circumferential surface of a shaft part such as journals (J), crank pins (P), a front part (Fr), and a flange (Fl), a ratio x/y of an area rate x of sulfide in a position (X) corresponding to a parting surface of a die for finish forging to an area rate y of sulfide in a position (Y) corresponding to a bottom of a die impression of the die for finish forging is equal to or lower than 1.5. The forged crankshaft (1) can avoid an occurrence of machined surface cracks on the journals (J) and the crank pins (P) after the outer circumferential surface is machined.
摘要翻译： 锻造曲轴（1）包括含有S的碳素钢，其中在对应于诸如轴颈（J），曲柄销（P），前部（Fr）和轴的部分的加工的外圆周表面的部分中 法兰（F1），在对应于用于精锻的模具的分型面的位置（X）中硫化物的面积率x的比率x / y与对应于（a）的位置（Y）的硫化物的面积率y 用于精锻的模具的模具底部等于或低于1.5。 锻造的曲轴（1）可以避免在外周表面被加工之后在轴颈（J）和曲柄销（P）上发生加工表面裂纹。
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公开(公告)号：US20150267743A1
公开(公告)日：2015-09-24
申请号：US14432306
申请日：2013-10-01
申请人： WHIRLPOOL S.A.
发明人： Adilson Luiz Manke , Rinaldo Puff , Diego Sacomori
CPC分类号： F16C25/04 , F04B9/045 , F04B39/0094 , F16C3/08 , F16C3/14 , F16C3/22 , F16C9/02 , F16C9/03 , F16C33/10 , F16C33/1025 , F16C33/106 , F16C33/121 , F16C33/125 , F16C33/128 , F16C33/20 , F16C33/205 , F16C2208/20 , F16C2208/58 , F16C2223/60
摘要： The compressor comprises: a crankcase (10) carrying a cylinder (20) and a bearing hub (40) having a first and a second end portions (40a, 40b) and defining a radial bearing (41), in which is housed a crankshaft (50); and a connecting rod (60) coupled to a piston (30) housed in the cylinder (20) and having a larger eye (61) mounted in an eccentric end portion (55) of the crankshaft (50). Each of said end portions (40a, 40b) is defined by a bushing extension (45, 46) affixed in the interior of the bearing hub (40) and having an end portion (45a, 46a) projecting outwards from the bearing hub (40), in order to be elastically and radially deformed when pressed by a confronting portion of the crankshaft (50), which presents coaxiality deviation in relation to the axis (X1) of the radial bearing (41).
摘要翻译： 压缩机包括：承载缸体（20）的曲轴箱（10）和具有第一和第二端部（40a，40b）并且限定径向轴承（41）的轴承座（40），其中容纳有曲轴 （50）; 以及联接到容纳在所述气缸（20）中并具有安装在所述曲轴（50）的偏心端部（55）中的较大的眼睛（61）的活塞（30）的连杆（60）。 每个所述端部（40a，40b）由固定在所述轴承座（40）的内部中的衬套延伸部（45,46）限定，并且具有从所述轴承毂（40）向外突出的端部（45a，46a） ），以便在由曲轴（50）的相对部分按压时相对于径向轴承（41）的轴线（X1）产生同轴度偏差而弹性和径向变形。
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公开(公告)号：US20150128416A1
公开(公告)日：2015-05-14
申请号：US14597307
申请日：2015-01-15
CPC分类号： B21K1/08 , B21J5/025 , B21J5/027 , B21J5/08 , F16C3/08 , F16C2220/46 , Y10T29/49286
摘要： A method of manufacturing a die forged crankshaft to be mounted in a two or more cylinder reciprocating apparatus includes: an upsetting step that includes upsetting a billet having a constant cross-sectional area along an entire length thereof to form a blank having an enlarged cross-sectional area at a region between a portion to be formed into a leading crank arm of the crankshaft and a portion to be formed into a trailing crank arm thereof; a die forging step that includes die forging the blank formed in the upsetting step to form a forged blank having a shape of the crankshaft with a flash; and a trimming step that includes trimming the flash from the forged blank formed in the die forging step. This makes it possible to improve the material utilization and to use a billet having a cross-sectional size as small as possible.
摘要翻译： 一种制造要安装在两个或更多个气缸往复运动装置中的模锻曲轴的方法包括：镦锻步骤，包括镦锻沿其整个长度具有恒定横截面积的钢坯，以形成具有扩大横截面的坯料， 要形成曲轴的前置曲柄臂的部分与要形成其后曲柄臂的部分之间的区域的截面积; 模锻步骤，其包括在镦锻步骤中形成的坯件的锻造，以形成具有闪光的曲轴形状的锻造坯料; 以及修整步骤，其包括从在锻模步骤中形成的锻造坯件修整闪光。 这使得可以提高材料利用率，并且可以使用横截面尺寸尽可能小的坯料。
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