公开(公告)号：US5988136A

公开(公告)日：1999-11-23

申请号：US41673

申请日：1998-03-13

Applicant: Walter Piock ,  Martin Wirth

Inventor： Walter Piock ,  Martin Wirth

IPC: F02D9/02 ,  F02B1/10 ,  F02B17/00 ,  F02B75/12 ,  F02D41/02 ,  F02D41/06 ,  F02D41/30

CPC classification number: F02B17/005 ,  F02D41/0255 ,  F02D41/062 ,  F02D41/3023 ,  F02B2075/125 ,  F02D2041/0015 ,  Y02T10/123 ,  Y02T10/26

Abstract: In order to reduce No.sub.x and HC emissions during starting and warm-up of a throttled internal combustion spark-ignition engine with direct injection, the beginning of fuel injection into the combustion chamber is shifted into the compression phase, while the total air ratio .lambda. is 1 or slightly lean.

Abstract translation: 为了在直接喷射的节流内燃式点火式发动机起动和预热期间减少Nox和HC排放，燃料喷射到燃烧室的开始转变为压缩阶段，而总空气比λ为 1或稍瘦。

公开(公告)号：US5921215A

公开(公告)日：1999-07-13

申请号：US829344

申请日：1997-03-31

Applicant: Martin Wirth ,  Walter Piock

Inventor： Martin Wirth ,  Walter Piock

IPC: F02B1/04 ,  F02B23/10 ,  F02B31/00 ,  F02B75/02 ,  F02B75/12 ,  F02F1/24 ,  F02F1/42 ,  F02F3/26 ,  F02B3/04

CPC classification number: F02B23/101 ,  F02B23/104 ,  F02F1/4214 ,  F02F1/4221 ,  F02F3/26 ,  F02B1/04 ,  F02B2023/106 ,  F02B2023/108 ,  F02B2031/006 ,  F02B2075/027 ,  F02B2075/125 ,  F02B2275/18 ,  F02B2275/20 ,  F02B2275/48 ,  F02F2001/241 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

Abstract: In order to optimize combustion in a four-stroke spark-ignition engine with direct fuel injection, the conditions of charge flow are improved by providing the top surface of each piston with an essentially T-shaped configuration of guiding ribs, i.e., a longitudinal rib extending transversely to the crankshaft axis running and a cross-rib running in the direction of the crankshaft axis.

Abstract translation: 为了优化具有直接燃料喷射的四冲程点火式发动机的燃烧，通过使每个活塞的顶表面具有基本上T形的引导肋构造来改善充气流动的条件，即纵肋 横向于曲轴轴线延伸延伸的横肋和沿曲轴轴线方向延伸的横肋。

公开(公告)号：US5727520A

公开(公告)日：1998-03-17

申请号：US829342

申请日：1997-03-31

Applicant: Martin Wirth ,  Walter Piock ,  Frank Mundorff

Inventor： Martin Wirth ,  Walter Piock ,  Frank Mundorff

IPC: F02B1/04 ,  F02B3/06 ,  F02B23/10 ,  F02B31/00 ,  F02B75/02 ,  F02B75/12 ,  F02F1/24 ,  F02F1/42 ,  F02F3/26 ,  F02F3/28 ,  F02B31/04

CPC classification number: F02F1/4214 ,  F02B23/101 ,  F02B23/104 ,  F02F1/4221 ,  F02F3/26 ,  F02B1/04 ,  F02B2023/106 ,  F02B2023/108 ,  F02B2031/006 ,  F02B2075/027 ,  F02B2075/125 ,  F02B2275/18 ,  F02B2275/20 ,  F02B2275/48 ,  F02B3/06 ,  F02F2001/241 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

Abstract: In order to optimize combustion in a four-stroke spark-ignition engine with direct fuel injection, the conditions of charge flow are improved by providing the top surface of each piston with an essentially U-shaped guiding rib, which is open towards the exhaust side of the combustion chamber, fuel injection taking place into the concave area inside the guiding rib. The nozzle opening of the fuel injection device as well as the ignition source are positioned in the area of the cylinder center, i.e., preferably on different sides of the longitudinal center plane of the engine.

Abstract translation: 为了优化具有直接燃料喷射的四冲程点火式发动机的燃烧，通过为每个活塞的顶表面提供基本上为U形的引导肋来改善充气流动的条件，该导向肋朝向排气侧开口 燃烧室内的燃料喷射发生在导向肋内部的凹入区域中。 燃料喷射装置的喷嘴开口以及点火源位于气缸中心的区域中，优选位于发动机的纵向中心平面的不同侧。

公开(公告)号：US5642706A

公开(公告)日：1997-07-01

申请号：US641751

申请日：1996-05-02

Applicant: Martin Wirth ,  Walter Piock

Inventor： Martin Wirth ,  Walter Piock

IPC: F02B23/10 ,  F02B75/12 ,  F02F3/26 ,  F02B5/00

CPC classification number: F02F3/26 ,  F02B23/104 ,  F02B2023/108 ,  F02B2075/125 ,  F02B23/101 ,  Y02T10/123 ,  Y02T10/125

Abstract: A combustion chamber formed by a recess in the piston of an internal combustion engine is divided by restrictions into two or more partial chambers. The ratio between the minimum distance in the area of the restrictions and the maximum distance in concave areas of the wall of the combustion chamber, as measured from the axis of the combustion chamber, is between 0.2 and 0.5. In the area of the minimum distance downstream of the restriction, the wall of each partial chamber is inclined relative to the axis of the combustion chamber, the inclination decreasing continuously in downstream direction. To achieve extremely lean operation with low exhaust emissions, the fuel injection device is located in a position eccentric to the center of the combustion chamber, and the ignition device is located approximately in the center of the combustion chamber. The restrictions of the piston recess are provided with guide faces located approximately parallel to the axis of the combustion chamber and directed towards the center of the combustion chamber, the smallest distance of these guide faces from the center of the combustion chamber being 0-0.2 times the piston diameter.

Abstract translation: 由内燃机的活塞中的凹部形成的燃烧室被限制分割成两个以上的部分室。 从燃烧室的轴线测量的限制区域中的最小距离与燃烧室壁的凹陷区域中的最大距离之间的比率在0.2和0.5之间。 在限制下游的最小距离区域，每个局部室的壁相对于燃烧室的轴线倾斜，倾斜度沿下游方向连续减小。 为了实现具有低废气排放的极端精馏操作，燃料喷射装置位于与燃烧室中心偏心的位置，点火装置大致位于燃烧室的中心。 活塞凹槽的限制设置有引导面，其大致平行于燃烧室的轴线并且指向燃烧室的中心，这些引导面距燃烧室中心的最小距离为0-0.2倍 活塞直径。