CN2511797Y

CN2511797Y - Gas feeder for internal combustion engine

Info

Publication number: CN2511797Y
Application number: CN 01258201
Authority: CN
Inventors: 刘庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-21
Filing date: 2001-11-21
Publication date: 2002-09-18
Anticipated expiration: 2011-11-21

Abstract

The utility model relates to a gas feeder for an internal combustion engine which comprises a main channel and a main gas feeding valve, wherein, an outlet of the main gas feeding valve is communicated with a through hole on a side wall surface of the main channel, a valve cavity of the main gas feeding valve is a piston cylinder, and a valve core is a piston rod in the piston cylinder, an axial clearance is reserved between a peripheral wall of the piston rod and a wall of the piston cylinder as a gas channel, amount of gas flow can be changed when the piston rod slides. The utility model can satisfy requirements of gas and air mixing ratio under different conditions, overcome the defects that the prior gas feeder mixes a gas too densely or too thinly under certain condition, and improve an exhaustion index.

Description

The fuel gas in use for internal-combustion engine steam-supplying device

Technical field

The utility model relate to a kind of that on internal-combustion engine, use, with the Gas supply apparatus of combustion gas and air mixing.

Background technique

With combustion gas, as the internal-combustion engine that rock gas, petroleum gas etc. acts as a fuel, all must adopt Gas supply apparatus with combustion gas and air mixing, provide flammable combination gas as internal-combustion engine.For this reason, Gas supply apparatus all has a main passage and a main steam supply valve, the outlet of main steam supply valve is communicated with through hole on the side wall surface of main passage, its working principle is that air flows through the main passage under the suction of internal combustion engine cylinder, the operator opens main steam supply valve by controlling line, makes combustion gas enter main passage and air mixing.In prior art, the similar reduction valve of main steam supply valve mainly is made of crank and lever, is controlling when rotating under the line traffic control when crank, and an end of lever is depressed, and makes the perk of the lever the other end, thereby steam supply valve is opened.The main steam supply valve that this shows this structure only plays on-off action, can not satisfy the requirement of gas-air proportions of ingredients under the different operating modes.Therefore existing Gas supply apparatus can only satisfy the requirement of a certain operating mode.

Summary of the invention

The purpose of this utility model provides a kind of Gas supply apparatus that the gas-air proportions of ingredients requires under the different operating modes that satisfies.

The utility model is achieved in that Gas supply apparatus comprises a main passage and a main steam supply valve, the air outlet of main steam supply valve is communicated with through hole on the side wall surface of main passage, especially, the valve pocket of main steam supply valve is a piston cylinder, spool is the piston rod in the piston cylinder, leaves axial clearance as blast tube between the casing wall of the periphery wall of piston rod and piston cylinder.Said structure makes can change gas flow when piston rod slides, therefore as long as by controlling the position of line traffic control piston rod, just can change gas-air proportions of ingredients under the different operating modes, thereby make Gas supply apparatus can satisfy the requirement of gas-air proportions of ingredients under the different operating modes.

The utility model has the advantages that the requirement of satisfying gas-air proportions of ingredients under the different operating modes, overcome existing Gas supply apparatus combination gas overrich under some operating mode, rare excessively again shortcoming under some operating mode has improved exhaust index.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, wherein:

Fig. 1 is the structural representation of the utility model example I;

Fig. 2 is the A-A sectional drawing of Fig. 1;

Fig. 3 is the structural representation of example II;

Fig. 4 is the structural representation of EXAMPLE III;

Fig. 5 is the B-B sectional drawing of Fig. 4;

Fig. 6 is the structural representation of EXAMPLE IV;

Fig. 7 is the structural representation of EXAMPLE V;

Fig. 8 is the C-C sectional drawing of Fig. 7;

Fig. 9 is the structural representation of example VI;

Figure 10 is the D-D sectional drawing of Fig. 9;

Figure 11 is the structural representation of example VII A;

Figure 12 is that E from Figure 11 is to the piston rod construction schematic representation of seeing.

Embodiment

Example I

Referring to Fig. 1,2, Gas supply apparatus comprises a main passage 1 and a main steam supply valve 2, the air outlet 3 of main steam supply valve 2 is communicated with through hole on 1 side wall surface of main passage, the valve pocket of main steam supply valve 2 is piston cylinders 4, spool is the piston rod 5 in the piston cylinder 4, periphery wall at piston rod 5 has axial notch 6, the degree of depth of groove 6 changes vertically, this groove is as the axial clearance between the casing wall of piston rod 5 periphery walls and piston cylinder 4, and position corresponding with groove 6 on piston cylinder 4 sidewalls also has suction port 7.Combustion gas is from suction port 7 groove 6 of flowing through, and 3 enters in the main passage 1 and air mixing from the air outlet at last.When piston rod 5 endwisely slips, can change gas flow.The piston rod 5 of present embodiment is by 8 controls of spring 12 and cam, when the operator by controlling the axial position that can change piston rod 5 when line rotates cam 8.The slip that also available in addition other mechanical structure commonly used is come control piston bar 5.

Example II

Referring to Fig. 3, clear for making view, only schematically show the structure of piston cylinder 4 and piston rod 5, other structure the same with example I (same down) among the figure.The difference of present embodiment and example I is not offer specially suction port on casing wall, when piston rod 5 during to lower slider, combustion gas can enter from the lower end of piston cylinder 4 in the groove 6 of piston rod 5, and when piston rod 5 axial positions changed, gas flow also changed.

EXAMPLE III

Referring to Fig. 4,5, present embodiment is offered groove 9 on piston cylinder 4 sidewalls, groove 9 degree of depth change vertically, and this groove is as the axial clearance between piston rod 5 periphery walls and piston cylinder 4 casing walls, and position corresponding with groove 9 on piston cylinder 4 sidewalls also offers suction port 7.When piston rod 5 can change gas flow during to lower slider.

EXAMPLE IV

Referring to Fig. 6, the difference of present embodiment and EXAMPLE III is not offer specially suction port on the casing wall of piston cylinder 4, when piston rod 5 during to lower slider, combustion gas can enter in the groove 9 of piston cylinder 4 from the lower end of piston cylinder 4, when piston rod 5 axial positions changed, gas flow also changed.

EXAMPLE V

Referring to Fig. 7,8, the termination of the piston rod 5 of present embodiment is taper, constitutes the axial clearance between piston rod periphery wall and the piston in cylinder wall between the casing wall of tapered slope and piston cylinder 4.When piston rod 5 can change gas flow during to lower slider.

Example VI

Referring to Fig. 9,10, present embodiment has axial slits 10 on the sidewall of piston cylinder 4, and this slit is as the axial clearance between the casing wall of piston rod 5 periphery walls and piston cylinder 4, when piston rod 5 can change gas flow during to lower slider.

Example VII A

In the foregoing description I to V, the size variation rule of the axial clearance between piston rod periphery wall and the piston in cylinder wall all changes towards single trend, that is all be to change from small to big singlely, or from large to small, in fact the size variation rule of axial clearance can also be other form, the groove 11 of piston rod 5 as shown in figure 11 changes from small to big earlier, more from large to small.

Axial clearance between piston rod periphery wall and the piston in cylinder wall except the degree of depth changes vertically, also can only be that width changes vertically, and perhaps the degree of depth and width all change vertically.For example shown in Figure 12, the width of the groove 11 on the piston rod 5 changes vertically.As long as the different axial clearance Changing Pattern of design just can make Gas supply apparatus be applicable to different combustion gas, make the adaptability of Gas supply apparatus stronger.

Claims

1. fuel gas in use for internal-combustion engine steam-supplying device, comprise a main passage and a main steam supply valve, the air outlet of main steam supply valve is communicated with through hole on the side wall surface of main passage, it is characterized in that: the valve pocket of main steam supply valve is a piston cylinder, spool is the piston rod in the piston cylinder, leaves axial clearance as blast tube between the casing wall of the periphery wall of piston rod and piston cylinder.

2. Gas supply apparatus as claimed in claim 1 is characterized in that: the size of axial clearance changes vertically.

3. Gas supply apparatus as claimed in claim 1 is characterized in that: the periphery wall at piston rod has axial notch, and depth of groove changes vertically, and this groove is as the axial clearance between piston rod periphery wall and the piston in cylinder wall.

4. Gas supply apparatus as claimed in claim 1 is characterized in that: have groove on the piston cylinder sidewall, depth of groove changes vertically, and this groove is as the axial clearance between piston rod periphery wall and the piston in cylinder wall.

5. Gas supply apparatus as claimed in claim 1 is characterized in that: the termination of piston rod is taper, constitutes the axial clearance between piston rod periphery wall and the piston in cylinder wall between tapered slope and the piston in cylinder wall.

6. Gas supply apparatus as claimed in claim 1 is characterized in that: have axial slits on the piston cylinder sidewall, this slit is as the axial clearance between piston rod periphery wall and the piston in cylinder wall.

7. as the described Gas supply apparatus of one of claim 2 to 6, it is characterized in that: the width of the axial clearance between piston rod periphery wall and the piston in cylinder wall changes vertically.