公开(公告)号：US4368703A

公开(公告)日：1983-01-18

申请号：US223225

申请日：1981-01-07

Applicant: Hirotaka Shibata

Inventor： Hirotaka Shibata

IPC: F01L1/36 ,  F01L7/12 ,  F02B61/02 ,  F02B75/02 ,  F02D13/02 ,  F02D9/06

CPC classification number: F02D13/0284 ,  F01L7/12 ,  F02B2075/025 ,  F02B61/02 ,  Y02T10/18

Abstract: A two stroke engine having an exhaust port formed in the cylinder wall. At the upper portion of the exhaust port, there is provided a rotary type exhaust timing control valve which is adapted to be actuated by a centrifugal governor device to control the exhaust timing in accordance with the engine speed. The centrifugal governor device has a governor shaft which extends coaxially with the engine crankshaft and directly connected at one end with the adjacent end of the crankshaft. At the other end, the crankshaft is provided with a magneto device so that the magneto does not have any magnetic influence on the centrifugal governor device.

Abstract translation: 具有形成在气缸壁中的排气口的二冲程发动机。 在排气口的上部设置有旋转式排气正时控制阀，其适于由离心调速器装置致动，以根据发动机转速控制排气正时。 离心调速器装置具有调速器轴，其与发动机曲轴同轴地延伸并且在一端与曲轴的相邻端直接连接。 在另一端，曲轴设置有磁性装置，使得磁铁对离心调速器装置不具有任何磁影响。

公开(公告)号：US4364346A

公开(公告)日：1982-12-21

申请号：US219328

申请日：1980-12-22

Applicant: Masakazu Shiohara

Inventor： Masakazu Shiohara

IPC: F02B33/30 ,  F01L1/36 ,  F01L1/38 ,  F01L21/00 ,  F02B25/14 ,  F02B25/20 ,  F02B75/02 ,  F02D13/02 ,  F02F1/22 ,  F02B25/06

CPC classification number: F02D13/0284 ,  F01L5/02 ,  F01L7/10 ,  F02B25/14 ,  F02B2075/025 ,  Y02T10/18

Abstract: An exhaust timing control device for a two-cycle internal combustion engine, in which a valve member functioning as the upper edge of an exhaust port that opens into the inner circumference of a cylinder is disposed in the upper wall of an exhaust passage from said exhaust port. A valve hole having an elongated cross-section is opened in the wall of the exhaust passage in the vicinity of the exhaust port, and is formed at an inclination with respect to the axis of said cylinder. The valve member is arranged slidably in said valve hole so that it can be retracted into said valve hole until the leading end portion thereof becomes substantially coextensive with the inner wall surface of said exhaust passage.

Abstract translation: 一种用于双循环内燃机的排气正时控制装置，其中，作为从气缸内周开口的排气口的上边缘起作用的阀构件设置在排气通道的上壁中， 港口。 具有细长横截面的阀孔在排气口附近在排气通道的壁上开口，并且相对于所述气缸的轴线倾斜地形成。 阀构件可滑动地布置在所述阀孔中，使得其可以缩回到所述阀孔中，直到其前端部与所述排气通道的内壁表面大致共同延伸。

公开(公告)号：US4333431A

公开(公告)日：1982-06-08

申请号：US192860

申请日：1980-10-01

Applicant: Toshimitsu Iio ,  Yuusaku Yamaoka

Inventor： Toshimitsu Iio ,  Yuusaku Yamaoka

IPC: F01L1/36 ,  F01L7/12 ,  F02B25/20 ,  F02D13/02 ,  F02B75/02

CPC classification number: F02D13/0284 ,  F02B25/20 ,  Y02T10/18

Abstract: A water-cooled two stroke engine including a cylinder formed with an exhaust port which is adapted to be cyclically closed by a piston reciprocating in the cylinder. The exhaust port is provided at the upper portion with a port timing control valve which is operated to control the port timing in accordance with the engine speed by a piston-cylinder type actuator. The actuator is adaped to be operated by the engine cooling water pressure and has an operating pressure chamber at one side of the piston and a compensating pressure chamber at the other side. The cooling water supply passage has a flow restriction and the pressure upstream of the restriction is introduced into the operating pressure chamber and that downstream of the restriction into the compensating pressure chamber.

Abstract translation: 一种水冷二冲程发动机，其包括形成有排气口的气缸，该排气口适于由在气缸中往复运动的活塞循环地闭合。 排气口在上部设置有端口正时控制阀，该端口正时控制阀通过活塞 - 气缸式致动器根据发动机转速来控制端口正时。 致动器适于由发动机冷却水压力操作，并且在活塞的一侧具有工作压力室，另一侧具有补偿压力室。 冷却水供给通道具有流动限制，并且将限制的上游压力引入到操作压力室中，并将限流器的下游引入补偿压力室。

公开(公告)号：US2428199A

公开(公告)日：1947-09-30

申请号：US65751846

申请日：1946-03-27

Applicant: NAT PRESSURE COOKER CO

Inventor： BUSKE GILBERT E

IPC: F01L1/36 ,  F02B75/02

CPC classification number: F01L1/36 ,  F02B2075/025