JPS6188007U

JPS6188007U -

Info

Publication number: JPS6188007U
Application number: JP17346384U
Authority: JP
Priority date: 1984-11-15
Filing date: 1984-11-15
Publication date: 1986-06-09

Description

[Brief explanation of the drawing]

第１図は部分縦断面図、第２図はその平面図、
第３図は要部の分解斜視図、第４図は部分断面図
、第５図は従来例の部分縦断面図である。１……シリンダブロツク、２……ヘツド部、３
……吸気管、４……燃焼室、５……吸気孔、６…
…排気管、７……排気孔、８……収納部、９……
吸気連通口、１０……吸気用円板バルブ、１１…
…排気用連通口、１２……排気用円板バルブ、１
３ａ，１３ｂ……バルブシート、１５……連通窓
口、１６……密封凸条、１７……密封凹条、Ｒ…
…膨張間隙。 Figure 1 is a partial vertical sectional view, Figure 2 is its plan view,
FIG. 3 is an exploded perspective view of essential parts, FIG. 4 is a partial sectional view, and FIG. 5 is a partial vertical sectional view of a conventional example. 1...Cylinder block, 2...Head part, 3
...Intake pipe, 4...Combustion chamber, 5...Intake hole, 6...
...exhaust pipe, 7...exhaust hole, 8...storage section, 9...
Intake communication port, 10...Intake disc valve, 11...
...Exhaust communication port, 12...Exhaust disc valve, 1
3a, 13b...Valve seat, 15...Communication window, 16...Sealing protrusion, 17...Sealing groove, R...
...expansion gap.

Claims

[Scope of utility model registration request]

The head of the cylinder block is provided with an intake hole that communicates between the intake pipe and the combustion chamber, and an exhaust hole that communicates with the exhaust pipe and the combustion chamber, and an intake port is provided in the storage section formed in the head. A disc valve for intake and exhaust and a disc valve for exhaust having an exhaust communication port are rotatably provided, and the disc valve for intake and exhaust is rotated at a rotation speed that provides valve timing synchronized with the rotation of the crankshaft to perform intake and exhaust. In the rotary intake/exhaust type reciprocating engine, a pair of valve seats are closely covered on each side of each of the intake and exhaust disc valves, and each valve seat is provided with a pair of valve seats in the intake hole or the exhaust hole. Together, they form a communication window, and furthermore, several sealing protrusions are protruded from the outer surface of the valve seat to surround the communication window, and several sealing protrusions that engage with the sealing protrusions are connected to the housing part. 1. A combustion chamber sealing device for a rotary intake/exhaust type reciprocating engine, characterized in that an expansion gap is formed on the inner surface of the storage section and the outer surface of the valve seat.