Four-stroke engine
    4.
    发明公开
    Four-stroke engine 失效
    四冲程发动机

    公开(公告)号:EP0636777A3

    公开(公告)日:1995-04-26

    申请号:EP94201920.9

    申请日:1994-07-04

    发明人: Wu, Ko-Jen

    IPC分类号: F02D13/02 F02D9/02

    摘要: An engine charge control system operates by initially reducing power from full load by retarding exhaust valve (20) closing timing to increase exhaust gas charge dilution up to the limit for efficient operation. Further load reductions are made by reducing charge mass without increased dilution via alternative steps such as throttling (in conjunction with intake check valves or using individual cylinder valves) or retarding intake valve (19) opening timing without throttling. Partial substitution of external charge dilution is also contemplated.

    摘要翻译: 发动机充气控制系统通过首先通过减速排气门(20)关闭正时来减少来自满载的功率来操作,以将排气充气稀释增加到高效操作的极限。 进一步减少负荷通过减少荷电质量而不会通过替代步骤(例如节流(与进气止回阀或使用单个气缸阀)或延迟进气门(19)打开正时而不增加稀释而无节流)进行。 也考虑了外部电荷稀释的部分替代。

    Four-stroke engine
    5.
    发明公开
    Four-stroke engine 失效
    Viertaktbrennkraftmaschine。

    公开(公告)号:EP0636777A2

    公开(公告)日:1995-02-01

    申请号:EP94201920.9

    申请日:1994-07-04

    发明人: Wu, Ko-Jen

    IPC分类号: F02D13/02 F02D9/02

    摘要: An engine charge control system operates by initially reducing power from full load by retarding exhaust valve (20) closing timing to increase exhaust gas charge dilution up to the limit for efficient operation. Further load reductions are made by reducing charge mass without increased dilution via alternative steps such as throttling (in conjunction with intake check valves or using individual cylinder valves) or retarding intake valve (19) opening timing without throttling. Partial substitution of external charge dilution is also contemplated.

    摘要翻译: 提供给进气门的进气压力和相对于相关活塞的曲柄角度的排气门关闭的定时是可变的。 在各种操作速度下,以最大额定功率向进气门提供期望的最大进气压力和用于操作发动机的选定气门正时。 通过逐渐延迟排气阀关闭到最大延迟选择以避免对气缸中的充气燃烧产生不利影响,在大功率范围内将动力降低到最低功率范围内。 通过减少进气阀的进气压力,同时将排气门关闭时间提前回到初始定时设定,完成在空转以上的低功率范围内运行的功率降低。

    Intake venting system for an internal combustion engine
    6.
    发明公开
    Intake venting system for an internal combustion engine 失效
    Einlassentlüftungssystemfüreine Brennkraftmaschine。

    公开(公告)号:EP0508506A1

    公开(公告)日:1992-10-14

    申请号:EP92200649.9

    申请日:1992-03-06

    发明人: Wu, Ko-Jen

    IPC分类号: F02B29/00 F02M35/10

    CPC分类号: F02B29/00 Y02T10/146

    摘要: An intake venting system comprising a plurality of intake passages (22). Each of the intake passages (22) leads to a respective cylinder (12) in an engine. A reed valve (24) is disposed in and attached to each intake passage (22). Each of the reed valves (22) allows fluid flow towards the respective cylinder (12) and obstructs fluid back-flow in the reverse direction. An intake valve (20) is seated in each of the intake passages (22) between the reed valve (24) therein and the cylinder (12) to which the respective intake passage (22) leads. A bypass port (26) is located on each intake passage (22) so that each bypass port (26) communicates with a trapped volume (28) defined by the portion of the intake passage (22) between the reed valve (24) and intake valve therein (20). A control valve (32) is connected to each of the bypass ports (26), with the control valve (32) enabling communication between a predetermined pair of the trapped volumes (28) during a portion of the engine cycle when the pressure in one of the pair of trapped volumes (28) exceeds the pressure immediately upstream thereof, and the pressure in the other of the pair of trapped volumes (28) is less than the pressure in the one of the pair of trapped volumes (28).

    摘要翻译: 一种进气排气系统,包括多个进气通道(22)。 每个进气通道(22)通向发动机中的相应气缸(12)。 簧片阀(24)设置在并连接到每个进气通道(22)上。 每个簧片阀(22)允许流体朝向相应的气缸(12)流动,并阻止在相反方向上的流体回流。 在其中的簧片阀(24)和相应的进气通道(22)所引导的气缸(12)之间的进气通道(22)中的进气阀(20)中。 在每个进气通道(22)上设置旁通口(26),使得每个旁通通道(26)与由进气通道(22)的部分在簧片阀(24)和 其中的进气阀(20)。 控制阀(32)连接到每个旁通端口(26),其中控制阀(32)能够在发动机循环的一部分期间在预定的一对被捕获的容积(28)之间进行通信,当压力在一个 一对被捕获体积(28)的压力超过其紧上游的压力,并且该对捕集体积(28)中的另一个中的压力小于该对捕集体积(28)中的压力。

    Intake port pressure control apparatus for engine induction system
    7.
    发明公开
    Intake port pressure control apparatus for engine induction system 失效
    Druckregelvorrichtung eines Einlasskanalsfürein Auszugssystem einer Brennkraftmaschine。

    公开(公告)号:EP0460728A1

    公开(公告)日:1991-12-11

    申请号:EP91201167.3

    申请日:1991-05-15

    IPC分类号: F02B29/02 F02M25/06

    摘要: An intake port pressure control apparatus (20) comprises an intake passage (32) leading to a cylinder (22) in an engine, and a check valve (34) in the intake passage to allow fluid flow toward the cylinder and obstruct fluid back-flow in the reverse direction. A bypass port (38) is located on the intake passage so that the bypass port communicates with a trapped volume (36) defined by the portion of the intake passage between the check valve and intake valve. The intake port pressure control apparatus further comprises a control valve means (54) having an outlet passage (55,58), a secondary passage (56,59), and an actuating means (57) enabling communication between the outlet passage and secondary passage. The actuating means further enables active adjustment of the flow area of the flowpath between the secondary passage and outlet passage throughout a range of engine operating conditions. The outlet passage is connected to the bypass port, and the secondary passage is connected to a secondary air source. The control valve means enables a controlled air flow from the secondary air source into the trapped volume when the intake valve is closed.

    摘要翻译: 进气口压力控制装置(20)包括通向发动机中的气缸(22)的进气通道(32)和进气通道中的止回阀(34),以允许流体朝向气缸流动, 流向相反方向。 旁通口(38)位于进气通道上,使得旁通口与由止回阀和进气​​阀之间的进气通道的部分限定的被捕集体(36)连通。 进气口压力控制装置还包括具有出口通道(55,58),次级通道(56,59)和致动装置(57)的控制阀装置(54),该致动装置使得出口通道和副通道 。 致动装置还能够在整个发动机工作条件的范围内主动地调节次级通道和出口通道之间的流动路径的流动面积。 出口通道连接到旁通端口,次级通道连接到二次空气源。 当进气门关闭时,控制阀装置使得能够将来自二次空气源的受控气流流入被捕获的容积。