Combustion chamber structure for an internal combustion engine
    22.
    再颁专利
    Combustion chamber structure for an internal combustion engine 有权
    内燃机燃烧室结构

    公开(公告)号:USRE37714E1

    公开(公告)日:2002-05-28

    申请号:US09276450

    申请日:1999-03-25

    IPC分类号: F02F324

    摘要: To accelerate a combustion with an entire combustion chamber including the vicinity of an opening portion for air suction to thereby make uniform a flame propagation in a combustion chamber structure for an internal combustion engine, and to provide a technology for preventing the generation of knocks, a longitudinal sectional shape of a top wall surface of the combustion chamber is in the form of a substantially triangular shape in longitudinal section defined and surrounded by a cylinder head, a cylinder and a piston. A projection is provided on a circumferential edge portion of a top surface of the piston, with a surface, facing the top wall surface of the combustion chamber, of the projection being substantially in parallel with the top wall surface of the combustion chamber. A cutaway portion is formed in the vicinity of at least a portion, facing the intake opening portion, of the projection of the top surface of the piston.

    摘要翻译: 为了加速包括用于吸气的开口部附近的整个燃烧室的燃烧,从而使内燃机的燃烧室结构中的火焰传播均匀,并且提供防止产生爆震的技术, 燃烧室的顶壁表面的纵向截面形状呈纵向截面形状,形状为三角形形状,由气缸盖,气缸和活塞限定和围绕。 突起设置在活塞的顶表面的周缘部分上,突出部的面向燃烧室的顶壁表面的表面基本上与燃烧室的顶壁表面平行。 在活塞的上表面的突起的至少一部分附近形成切口部分,该部分面向进气开口部分。

    Fuel injection system for a lean burn engine
    23.
    发明授权
    Fuel injection system for a lean burn engine 失效
    燃油喷射系统,用于稀燃燃烧发动机

    公开(公告)号:US5704333A

    公开(公告)日:1998-01-06

    申请号:US733167

    申请日:1996-10-17

    摘要: According to the present invention, each of the cylinders of an engine is provided with a swirl port, which generates a swirl in the cylinder, and a conventional straight port. A swirl control valve is disposed in an inlet air passage connected to the straight port for blocking the flow of inlet air through the straight port. A fuel injection port is disposed in each of the swirl port and the straight port. The fuel injection port in the straight port is disposed at the position adjacent to the upper edge of the valve seat of the straight port inlet valve. When the swirl control valve blocks the inlet air passage leading to the straight port, fuel is injected from the fuel injection port of the straight port in the latter half of the intake stroke of the piston. The direction of fuel injection from the fuel injection port in the straight port is determined in such a manner that fuel is injected in the direction between the center axis of the cylinder and the center axis of the stem of the valve element of the inlet valve toward the opposite wall of the cylinder head or the upper part of the opposite wall of the cylinder.

    摘要翻译: 根据本发明,发动机的每个气缸设置有在气缸中产生涡流的旋流口和常规的直口。 旋流控制阀设置在连接到直口的入口空气通道中,用于阻挡通过直通口的入口空气流。 燃料喷射口设置在每个旋流口和直通口中。 直通口中的燃料喷射口设置在与直通入口阀的阀座的上边缘相邻的位置处。 当涡流控制阀阻塞通向直通口的入口空气通道时,在活塞的进气冲程的后半部分中,从直接口的燃料喷射口喷射燃料。 从直线上的燃料喷射口喷射的燃料的方向是这样确定的,即燃料沿气缸的中心轴线与入口阀的阀元件的杆的中心轴线之间的方向被喷射到 气缸盖的相对壁或气缸的相对壁的上部。

    Internal combustion engine cylinder head variable swirl siamese type
intake port structure with bypass passage from straight intake passage
communicated by gap to helical intake passage
    25.
    发明授权
    Internal combustion engine cylinder head variable swirl siamese type intake port structure with bypass passage from straight intake passage communicated by gap to helical intake passage 失效
    内燃机气缸盖可变旋流暹罗式进气口结构,带有从间隙连接到螺旋进气通道的直进通道的旁路通道

    公开(公告)号:US4699104A

    公开(公告)日:1987-10-13

    申请号:US869890

    申请日:1986-06-03

    申请人: Takeshi Okumura

    发明人: Takeshi Okumura

    摘要: A variable swirl siamese type intake port structure for an internal combustion engine cylinder head includes a first generally straight intake passage which leads to a first intake port and a second generally helical intake passage which leads to a second intake port which is formed with a helical end vortex portion. A control valve is fitted in the first generally straight intake passage at an upstream portion thereof so as to control its flow resistance. A bypass passage opens from a point downstream of the control valve in the first generally straight intake passage to the helical end vortex portion of the second intake port. And a downstream portion of the bypass passage is communicated to a downstream portion of the second generally helical intake passage. Thereby the resistance to flow of air-fuel mixture of the generally helical intake passage is diminished, and the engine volumetric efficiency and the maximum attainable engine output power are increased.

    摘要翻译: 用于内燃机气缸盖的可变旋流ese式进气口结构包括通向第一进气口的第一大致直的进气通道和通向第二进气口的第二大致螺旋形进气通道,第二进气通道形成有螺旋端 涡流部分。 控制阀在其上游部分处装配在第一大致直的进气通道中,以便控制其流动阻力。 旁通通道从第一大体上直的进入通道中的控制阀下游的点开口到第二进气口的螺旋端涡流部分。 并且旁路通路的下游部分连通到第二大致螺旋形进气通道的下游部分。 因此,通常螺旋式进气通道的空气 - 燃料混合物的流动阻力减小,并且发动机容积效率和最大可达到的发动机输出功率增加。

    Helically-shaped intake port of an internal-combustion engine
    26.
    发明授权
    Helically-shaped intake port of an internal-combustion engine 失效
    内燃机的螺旋形进气口

    公开(公告)号:US4516544A

    公开(公告)日:1985-05-14

    申请号:US494387

    申请日:1983-05-13

    IPC分类号: F02F1/42

    CPC分类号: F02F1/4228

    摘要: An engine comprising an intake port which has a separating wall projecting downwardly from the upper wall of the intake port. The separating wall defines a helical portion, an inlet passage portion tangentially connected to the helical portion, and a bypass passage interconnecting the inlet passage portion and the helical portion. The side wall of the helical portion has a slightly inclined portion located near the outlet portion of the bypass passage and expanding towards the separating wall so as to define a narrow passage portion between the inclined portion and the separating wall. A rotary valve is arranged in the bypass passage and is actuated by a vacuum-operated diaphragm apparatus. The rotary valve is opened when the amount of air fed into the cylinder of the engine is increased beyond a predetermined value.

    摘要翻译: 一种发动机,其特征在于,具有从所述进气口的上壁向下突出的分隔壁的进气口。 分隔壁限定螺旋部分,与螺旋部分切向连接的入口通道部分和将入口通道部分和螺旋部分相互连接的旁路通道。 螺旋部分的侧壁具有位于旁通通道的出口部分附近的稍微倾斜的部分,并且朝向分隔壁扩张,以便在倾斜部分和分隔壁之间限定一个狭窄的通道部分。 旋转阀设置在旁通通道中并由真空操作的隔膜装置致动。 当进入发动机气缸的空气量增加超过预定值时,旋转阀打开。

    Helically-shaped intake port of an internal combustion engine
    27.
    发明授权
    Helically-shaped intake port of an internal combustion engine 失效
    内燃机的螺旋形进气口

    公开(公告)号:US4481916A

    公开(公告)日:1984-11-13

    申请号:US491770

    申请日:1983-05-05

    IPC分类号: F02B1/04 F02B31/08 F02F1/42

    摘要: An engine comprising an intake port which has a separating wall projecting downward from the upper wall of the intake port. The separating wall defines a helical portion, an inlet passage portion tangentially connected to the helical portion, and a bypass passage interconnecting the inlet passage portion to the helical portion. A rotary valve is arranged in the bypass passage and actuated by a vacuum operated diaphragm apparatus. The rotary valve is opened when the amount of air fed into the cylinder of an engine is increased beyond a predetermined value. The separating wall has a height which is equal to approximately half the height of the intake port in the vicinity of the rotary valve.

    摘要翻译: 一种发动机,其特征在于,具有从所述进气口的上壁向下突出的分隔壁的进气口。 分隔壁限定螺旋部分,与螺旋部分切向连接的入口通道部分,以及将入口通道部分与螺旋部分相互连接的旁通通道。 旋转阀布置在旁路通道中并由真空操作的隔膜装置致动。 当进给发动机气缸的空气量增加超过预定值时,旋转阀打开。 分离壁的高度等于旋转阀附近的进气口的高度的大约一半。

    Internal combustion engine with helical intake port and combustion
chamber with two squish areas
    28.
    发明授权
    Internal combustion engine with helical intake port and combustion chamber with two squish areas 失效
    内燃机具有螺旋形进气口和燃烧室两个挤压区域

    公开(公告)号:US4480625A

    公开(公告)日:1984-11-06

    申请号:US421302

    申请日:1982-09-22

    IPC分类号: F02B1/04 F02B23/08

    CPC分类号: F02B23/08 F02B1/04 Y02T10/125

    摘要: An internal combustion engine has a cylinder head formed with a wedge shaped cylinder head recess which has on its one side closer to a spark plug a steeply inclined roof surface of about 38.degree. to 40.degree. inclination and on its other side a gently inclined roof surface of about 5.degree. to 20.degree. inclination formed with an intake valve opening, and a piston formed with a piston recess which generally mates with the cylinder head recess and which has on its one side closer to the spark plug an inclined side surface of about 45.degree. inclination. The planar surface portion of the piston crown and the planar surface portion of the cylinder head on opposite sides of the recessed portions mutually define a relatively large squish area on the side of the gently inclined roof surface and a relatively small squish area on the side of the steeply inclined roof surface. A helical port is connected to the intake valve opening so as to generate a swirl flow of air-fuel mixture in the combustion chamber.

    摘要翻译: 内燃机具有形成有楔形气缸盖凹部的气缸盖,其在其一侧更靠近火花塞,倾斜的倾斜顶部表面大约为38°至40°,另一侧具有倾斜的倾斜顶面 大约5°至20°的倾斜形成有进气门开口,以及形成有活塞凹部的活塞,活塞凹槽通常与气缸盖凹槽配合,并且其一侧在更靠近火花塞的一侧具有约45°的倾斜侧表面 DEG倾角。 活塞冠的平面表面部分和凹陷部分相对侧上的气缸盖的平面表面部分相互限定了在轻度倾斜的屋顶表面侧面上相对较大的挤压区域,以及相对较小的挤压区域 倾斜的屋顶表面。 螺旋口连接到进气门开口,以在燃烧室中产生空气 - 燃料混合物的旋流。

    Helically-shaped intake port of an internal combustion engine
    29.
    发明授权
    Helically-shaped intake port of an internal combustion engine 失效
    内燃机的螺旋形进气口

    公开(公告)号:US4478182A

    公开(公告)日:1984-10-23

    申请号:US490339

    申请日:1983-05-02

    IPC分类号: F02B31/08 F02F1/42

    CPC分类号: F02B31/082 Y02T10/146

    摘要: An engine comprising an intake port which has a separating wall projecting downward from the upper wall of the intake port. The separating wall defines a helical portion, an inlet passage portion tangentially connected to the helical portion, and a bypass passage interconnecting the inlet passage portion to the helical portion. A rotary valve is arranged in the bypass passage and actuated by a vacuum operated diaphragm apparatus. The rotary valve is opened when the amount of air fed into the cylinder of an engine is increased beyond a predetermined value. A conical shaped groove is formed on the bottom wall of the intake port. The lower end of the rotary valve is located in the groove.

    摘要翻译: 一种发动机,其特征在于,具有从所述进气口的上壁向下突出的分隔壁的进气口。 分隔壁限定螺旋部分,与螺旋部分切向连接的入口通道部分,以及将入口通道部分与螺旋部分相互连接的旁通通道。 旋转阀布置在旁路通道中并由真空操作的隔膜装置致动。 当进给发动机气缸的空气量增加超过预定值时,旋转阀打开。 在进气口的底壁上形成圆锥形槽。 旋转阀的下端位于凹槽内。

    Helically shaped intake port of an internal combustion engine
    30.
    发明授权
    Helically shaped intake port of an internal combustion engine 失效
    内燃机的螺旋形进气口

    公开(公告)号:US4308832A

    公开(公告)日:1982-01-05

    申请号:US072159

    申请日:1979-09-05

    IPC分类号: F02B1/04 F02B31/00 F02F1/42

    摘要: A helically-shaped intake port comprising a helical portion and an inlet passage portion which is tangentially connected to the helical portion and extends so as to be slightly curved. The intake valve is arranged at the outlet open end of the helical portion. The side wall of the inlet passage portion, which is located near the axis of the intake valve, has on its upper portion an inclined wall portion which is arranged to be directed downwards. A projection projecting downwards and arranged to enclose the valve stem of the intake valve is formed in one piece on the upper wall of the helical portion. The projection has a maximum thickness at a position near the cross point of the circumferential wall of the projection and the straight line passing through the axis of the intake valve, and extending in parallel with a plane containing the inlet open end of the inlet passage portion. The upper half of the inclined wall portion of the side wall of the inlet passage portion is tangentially connected to the circumferential wall of the projection, which has the maximum thickness.

    摘要翻译: 螺旋状进气口包括螺旋部分和入口通道部分,该通道部分切向地连接到螺旋部分并且延伸成稍微弯曲。 进气阀布置在螺旋部分的出口开口端。 位于进气门轴线附近的入口通道部分的侧壁在其上部具有倾斜的壁部分,该壁部被布置成向下指向。 向下突出并且布置成包围进气门的阀杆的突起在螺旋部分的上壁上形成为一体。 突起在靠近突起的周壁的交叉点的位置和通过进气阀的轴线的直线上具有最大厚度,并且与包含入口通道部分的入口开口端的平面平行延伸 。 入口通道部分的侧壁的倾斜壁部分的上半部切向地连接到具有最大厚度的突起的周壁。