CN2462076Y

CN2462076Y - Shaft chamber fan-like clack valve actuating mechanism

Info

Publication number: CN2462076Y
Application number: CN 00225974
Authority: CN
Inventors: 黄坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-15
Filing date: 2000-11-15
Publication date: 2001-11-28
Anticipated expiration: 2010-11-15

Abstract

The utility model relates to a shaft chamber fan-shaped clack valve type gas distribution mechanism, which comprises at least a pair of respiratory chambers arranged in a cylinder cover. The point on a gas distribution shaft which is communicated with the respiratory chambers is provided with a fan-shaped valve clack which can do directional rotation in the respiratory chambers. The respiratory chambers, an attached bottom opening and an attached side opening form air entering passages and exhaust passages of an internal combustion engine, and the central angle of the cross section of the fan-shaped valve clack is between 120 DEG to 180 DEG. The utility model not only can satisfy the requirements of the gas distribution phase position of the two-stroke piston type internal combustion engine with different rotating speed, and can also further improve the efficiency of the internal combustion engine, so the utility model has practical significance and exploiting value.

Description

Shaft chamber fan clack valve type distribution device

The utility model relates to a kind of shaft chamber fan clack valve type distribution device, relates in particular to the distribution device of quartastroke engine, and it belongs to the valve machine mechanism class that is used for piston IC engine.

In the past few years, the inventor is the intrinsic defect that overcomes traditional valve type distribution device, once spends many time up and down at design axle, cavate distribution device, and has successively got two Chinese patent: ZL97238675.0 and ZL98230208.8.Compared with the prior art, they have simple in structure, low cost of manufacture, and the minimum and intake efficiency advantages of higher of operating noise, but still have some deficiency, and for example bad adjustment of port timing, intake efficiency is still waiting further raising etc.

The purpose of this utility model is for society provides a kind of more practical, is easier to adjust axle, the cavate distribution device of installation, to satisfy the needs of various two-stroke piston internal-combustion engines better.

Below be the explanation to technical solutions of the utility model: a kind of shaft chamber fan clack valve type distribution device comprises cylinder head 1, cylinder 2 and distribution axle, in described cylinder head 1, be provided with the respiratory cavity 3 of at least one pair of pipe shape, and be provided with the fan-shaped flap 4 of doing directed rotation in the chamber in the place of passing through at above-mentioned distribution axle mutually with respiratory cavity 3, described respiratory cavity 3 has then constituted the inlet and outlet passage of internal-combustion engine together with bottom opening of setting up 31 and side opening 32; 120 °≤the W of central angle of described fan-shaped flap 4≤180 °.In addition, be in corresponding fan-shaped flap 4 in the inlet and outlet passage several angle that should stagger mutually.

The utility model except simple in structure, cost of production is low, outside the little and intake efficiency advantage of higher of operating noise, also have both following benefit: one, can be better by changing the position and the central angle of fan-shaped flap, and the position and the size of bottom opening, side opening on the corresponding respiratory cavity, adapting to the different rotating speeds motor to the requirement on the port timing, thereby practicability is stronger; Its two, the design of respiratory cavity side opening not only can further reduce the height of cylinder head, simultaneously also is convenient to increase the inlet and outlet open area, therefore also helps further improving the efficiency of internal combustion engine.

Accompanying drawing is a structural representation of the present utility model.Among the figure, the 1. side opening of bottom opening 32. respiratory cavitys of cylinder head 2. cylinders 3. respiratory cavitys 4. fan-shaped flap 31. respiratory cavitys.

Claims

1, a kind of shaft chamber fan clack valve type distribution device comprises cylinder head (1), cylinder (2) and distribution axle, it is characterized in that: the respiratory cavity (3) that in described cylinder head (1), is provided with at least one pair of pipe shape, and be provided with the fan-shaped flap (4) of doing directed rotation in the chamber in the place of passing through at above-mentioned distribution axle mutually with respiratory cavity (3), described respiratory cavity (3) has then constituted the inlet and outlet passage of internal-combustion engine together with bottom opening of setting up (31) and side opening (32); 120 °≤W of central angle≤180 of described fan-shaped flap (4)) °.

2, a kind of shaft chamber fan lobe formula valve formula distribution device as claimed in claim 1 is characterized in that: be in corresponding fan-shaped flap (4) in the inlet and outlet passage several angle that should stagger mutually.