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公开(公告)号：US09429101B2
公开(公告)日：2016-08-30
申请号：US14331374
申请日：2014-07-15
Applicant: Caterpillar Inc.
Inventor： Robert Nacke , Stuart Niese , Aaron Ness , Fabio Menotti , Chris Hoops , Andrew Gaarder
CPC classification number: F02F3/26 , F02B23/0636 , Y02T10/125
Abstract: A piston for an internal combustion engine is disclosed. The piston includes an upper surface configured to at least partly face a cylinder head of the internal combustion engine. The upper surface includes a combustion bowl surface, and a squish face having an internal edge disposed a first distance from the longitudinal axis along a radial direction. The combustion bowl surface includes a planar surface extending radially outward from the longitudinal axis of the piston, a first concave surface disposed outside the planar surface in the radial direction, the first concave surface having a first radius of curvature, and a second concave surface disposed outside the first concave surface in the radial direction, the second concave surface having a second radius of curvature, the second radius of curvature being smaller than the first radius of curvature.
Abstract translation: 公开了一种用于内燃机的活塞。 活塞包括构造成至少部分地面对内燃机的气缸盖的上表面。 上表面包括燃烧碗表面和具有沿着径向方向设置在距纵向轴线第一距离的内边缘的挤压面。 燃烧碗表面包括从活塞的纵向轴线径向向外延伸的平坦表面，在径向方向上设置在平坦表面外侧的第一凹面，第一凹面具有第一曲率半径，第二凹面设置 在第一凹面的径向外侧，第二凹面具有第二曲率半径，第二曲率半径小于第一曲率半径。
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公开(公告)号：US20150053167A1
公开(公告)日：2015-02-26
申请号：US14331374
申请日：2014-07-15
Applicant: Caterpillar Inc.
Inventor： Robert Nacke , Stuart Niese , Aaron Ness , Fabio Menotti , Chris Hoops , Andrew Gaarder
IPC: F02F3/26
CPC classification number: F02F3/26 , F02B23/0636 , Y02T10/125
Abstract: A piston for an internal combustion engine is disclosed. The piston includes an upper surface configured to at least partly face a cylinder head of the internal combustion engine. The upper surface includes a combustion bowl surface, and a squish face having an internal edge disposed a first distance from the longitudinal axis along a radial direction. The combustion bowl surface includes a planar surface extending radially outward from the longitudinal axis of the piston, a first concave surface disposed outside the planar surface in the radial direction, the first concave surface having a first radius of curvature, and a second concave surface disposed outside the first concave surface in the radial direction, the second concave surface having a second radius of curvature, the second radius of curvature being smaller than the first radius of curvature.
Abstract translation: 公开了一种用于内燃机的活塞。 活塞包括构造成至少部分地面对内燃机的气缸盖的上表面。 上表面包括燃烧碗表面和具有沿着径向方向设置在距纵向轴线第一距离的内边缘的挤压面。 燃烧碗表面包括从活塞的纵向轴线径向向外延伸的平坦表面，在径向方向上设置在平坦表面外侧的第一凹面，第一凹面具有第一曲率半径，第二凹面设置 在第一凹面的径向外侧，第二凹面具有第二曲率半径，第二曲率半径小于第一曲率半径。
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公开(公告)号：US09422857B2
公开(公告)日：2016-08-23
申请号：US14573321
申请日：2014-12-17
Applicant: Caterpillar Inc.
Inventor： Ryan McHenry , Ronald Maloney , Andrew Gaarder , Christopher Reed , Lee Kress
CPC classification number: F02B37/02 , F01N3/046 , F01N13/10 , F01N13/102 , F01N13/1855 , F01N13/1861 , F01N2260/06 , Y02T10/144 , Y02T10/20
Abstract: An exhaust nozzle tip for an exhaust runner conveying a first flow of an exhaust gas includes an inlet, outlet, and nozzle passageway. The inlet receives a second flow of the exhaust gas from an internal combustion engine. The outlet introduces the second flow into the first flow in the exhaust runner. The nozzle passageway conveys the second flow from the inlet to the outlet and is defined by an upstream curved surface, and a downstream surface. The downstream surface includes a first downstream curve, a straight portion, and a second downstream curve. The first downstream curve transitions from perpendicular to the first flow to between 60 degrees and 15 degrees relative to the first flow. The straight portion extends from the first downstream curve. The second downstream curve transitions from the straight portion to a downstream portion of the exhaust runner.
Abstract translation: 用于输送排气的第一流的排气流道的排气喷嘴末端包括入口，出口和喷嘴通道。 入口接收来自内燃机的排气的第二流。 出口将第二流引入排气流道中的第一流。 喷嘴通道将第二流从入口传送到出口，并由上游曲面和下游表面限定。 下游表面包括第一下游曲线，直线部分和第二下游曲线。 第一下游曲线相对于第一流从垂直于第一流的过渡到60度和15度之间。 直线部分从第一下游曲线延伸。 第二下游曲线从排气流道的直线部分向下游部分转变。
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公开(公告)号：US20160177815A1
公开(公告)日：2016-06-23
申请号：US14573321
申请日：2014-12-17
Applicant: Caterpillar Inc.
Inventor： Ryan McHenry , Ronald Maloney , Andrew Gaarder , Christopher Reed , Lee Kress
CPC classification number: F02B37/02 , F01N3/046 , F01N13/10 , F01N13/102 , F01N13/1855 , F01N13/1861 , F01N2260/06 , Y02T10/144 , Y02T10/20
Abstract: An exhaust nozzle tip for an exhaust runner conveying a first flow of an exhaust gas includes an inlet, outlet, and nozzle passageway. The inlet receives a second flow of the exhaust gas from an internal combustion engine. The outlet introduces the second flow into the first flow in the exhaust runner. The nozzle passageway conveys the second flow from the inlet to the outlet and is defined by an upstream curved surface, and a downstream surface. The downstream surface includes a first downstream curve, a straight portion, and a second downstream curve. The first downstream curve transitions from perpendicular to the first flow to between 60 degrees and 15 degrees relative to the first flow. The straight portion extends from the first downstream curve. The second downstream curve transitions from the straight portion to a downstream portion of the exhaust runner.
Abstract translation: 用于输送排气的第一流的排气流道的排气喷嘴末端包括入口，出口和喷嘴通道。 入口接收来自内燃机的排气的第二流。 出口将第二流引入排气流道中的第一流。 喷嘴通道将第二流从入口传送到出口，并由上游曲面和下游表面限定。 下游表面包括第一下游曲线，直线部分和第二下游曲线。 第一下游曲线相对于第一流从垂直于第一流的过渡到60度和15度之间。 直线部分从第一下游曲线延伸。 第二下游曲线从排气流道的直线部分向下游部分转变。
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