CN101280740A - Ultra low temperature environment protection type gasoline device - Google Patents
Ultra low temperature environment protection type gasoline device Download PDFInfo
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- CN101280740A CN101280740A CNA2008100620348A CN200810062034A CN101280740A CN 101280740 A CN101280740 A CN 101280740A CN A2008100620348 A CNA2008100620348 A CN A2008100620348A CN 200810062034 A CN200810062034 A CN 200810062034A CN 101280740 A CN101280740 A CN 101280740A
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Abstract
The invention discloses an ultra-low-temperature and environment-friendly gasoline device which comprises a hand-operated pump fuel device. The hand-operated pump fuel device comprises an enrichment valve seat and a rubber enrichment valve, wherein, the enrichment valve seat is provided with an air exhaust pipe which is communicated with the connector of a balance hole by a balance rubber tube; at least two steps connected with the balance rubber tube are arranged on the excircle face; a snap spring is arranged on a position corresponding to the steps on the excircle face of the balance rubber tube; an annular groove with a downward opening is positioned at the lower end of the air exhaust pipe; the enrichment valve comprises a main body with a cavity; an annular body which extrudes outwards and is sealed with the annular groove is arranged at the upper end of the main body of the enrichment valve while an air inlet hole is positioned at the bottom of the main body thereof. The invention can improve the starting performance of the gasoline device in an ultra-low temperature (-30DEG C). The hand-operated pump fuel device which has simple structure and reliable performance adopts environment-friendly materials and is characterized by easy operation, high durability and environmental protection.
Description
Technical field
The present invention relates to a kind of gasoline device, particularly the ultra low temperature environment protection type gasoline device of cold-starting small utility gasoline engine.
Background technique
Gasoline device is the main device of realizing the oil-fired system function, finishing the inflammable mixture preparation, is the vitals in the gasoline device formula gasoline engine fuel system.But, traditional gasoline device formula petrol engine is when cold start-up, because of the low gasoline of temperature is not easy the evaporation atomizing, rotating speed is low by (50～100r/min) when adding startup, the speed that air flows through gasoline device is very low, and gasoline atomizing is bad, causes in the mixed gas that enters cylinder gasoline vapor very little, mixture strength is rare excessively, can not fire burns.At this problem, generally adopt the gasoline device of choke gate-type structure both at home and abroad, but this gasoline device can not make this problem be solved effectively at present.The use of small utility gasoline engines such as lawn machine, snowplow under low temperature condition can be very limited because of this problem, thereby be necessary to improve, reform, to satisfy the requirement of cold-starting.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of ultra low temperature environment protection type gasoline device, and it can guarantee that petrol engine normally starts at low temperatures for small utility gasoline engine provides the mixed gas that is fit to burning concentration under ultralow temperature.
The present invention is achieved by following technical proposals: a kind of ultra low temperature environment protection type gasoline device, comprise mixing chamber and float chamber, described float chamber is provided with the equalizing orifice body, described equalizing orifice body is provided with the equalizing orifice connecting head that is tightly connected with the balance sebific duct, also comprise hand pump oil device, described hand pump oil device comprises enriching valve seat and rubber upgrading valve, described enriching valve seat is provided with the outlet pipe that is connected with the equalizing orifice connecting head by the balance sebific duct, the periphery of described outlet pipe is provided with the step of two-stage at least that links to each other with the balance sebific duct, corresponding position with described step on the balance sebific duct periphery is provided with jump ring, and the lower end of outlet pipe is provided with the annular slot under shed; Described upgrading valve comprises the body that is provided with cavity, and the upper end of described upgrading valve body is provided with the cambered outwards annular solid that is tightly connected with annular slot, and the bottom of described upgrading valve body is provided with inlet hole.
The material of described upgrading valve is an epichlorohydrin rubber.
The material of described enriching valve seat is a nylon 66.
Step on the described outlet pipe periphery is a two-stage.
The invention has the beneficial effects as follows: because the present invention is provided with manually operated type pump oil device, manually bring pressure to bear on before gasoline engine starting on the upgrading valve of pump oil device, the extruding upgrading valve raises the gas pressure in the upgrading valve, force gas to enter float chamber, remove pressure then through the overbalance sebific duct.3～5 times so repeatedly, make abundant gas enter float chamber, cause the gas pressure of the interior gas pressure of float chamber greater than main jet pipe outlet port trunnion, thereby make the gasoline in the float chamber spray into trunnion in moment, the gasoline that sprays into can produce the mixed gas that satisfies combustion requirements concentration through atomizing.Because just have fuel oil to spray into trunnion before the gasoline engine starting, produced denseer mixed gas, thereby can improve the starting performance of (30 ℃) petrol engine under utmost point low ambient temperature.Simple in structure, the reliable performance of manually operated type pump of the present invention oil device adopts environment-friendly materials, have easy to operate, durability strong and the characteristic of environmental protection.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the C-C sectional view of Fig. 1.
Reference character: 1, throttle plate pin parts, 2, the mixing chamber body, 3, closure, 4, float, 5, float chamber body, 6, main jet, 7, pump oil device, 7-1, upgrading valve, 7-2, enriching valve seat, 8, jump ring, 9, the balance sebific duct, 10, jump ring, 11, equalizing orifice connecting head, 12, float pin, 13, the idle needle-valve, 14, the main jet pipe, 15, trunnion, 16, chock plate, 17, Air strangler spindle, 18, idle metering jet, 19, the idle metering jet body, 20, the chock plate control arm.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
See also Fig. 1 to Fig. 3.
A kind of ultra low temperature environment protection type gasoline device of the present invention comprises mixing chamber, float chamber and manually operated type pump oil device three parts composition.Mixing chamber is made of parts such as mixing chamber body 2, trunnion 15, main jet pipe 14, main jet 6, idle metering jet 18, idle metering jet body 19, closure 3, throttle plate pin parts 1, chock plate 16, Air strangler spindle 17, chock plate control arm 20, idle needle-valves 13, and closure 3 and chock plate 16 are separately positioned on the two ends in the trunnion 15; Float chamber is made of float chamber body 5, float 4, float pin 12, equalizing orifice connecting head 11 etc.; Pump oil device 7 comprises upgrading valve 7-1, enriching valve seat 7-2, and pump oil device 7 is communicated with float chamber by balance sebific duct 9.Manually operated type pump oil device 7 is connected with float chamber in the following way: utilize the tension force of the annular solid of upgrading valve 7-1 evagination that upgrading valve is installed in the enriching valve seat 7-2 annular slot, form between upgrading valve 7-1 and enriching valve seat 7-2 and be tightly connected; Enriching valve seat 7-2 outlet pipe inserts balance sebific duct 9 one ends, effect by jump ring 8 is fixedlyed connected enriching valve seat 7-2 with balance sebific duct 9, because the periphery of enriching valve seat 7-2 outlet pipe is provided with two-stage step at least, thereby this structure can guarantee good sealing property; Equalizing orifice connecting head 11 is inserted the other end of balance sebific duct 9, utilize jump ring 8 that both are fixedly connected, because equalizing orifice connecting head 11 peripheries have the step of two-stage at least, equalizing orifice connecting head 11 peripheries adopt the two-stage step usually, therefore can guarantee the sealing of this connection.Because equalizing orifice connecting head 11 communicates with the float indoor air, therefore, manually operated type pump oil device 7 is communicated with float chamber by balance sebific duct 9, equalizing orifice connecting head 11.Upgrading valve base 7-2 is provided with pin, can be used for fixedlying connected with petrol engine, and hand pump oil device 7 can be fixed on the petrol engine body by this mode like this.The material of upgrading valve 7-1 is an epichlorohydrin rubber, and the material of enriching valve seat 7-2 is a nylon 66, be the nonhazardous material and make, and degradable, have environmental protection characteristic.
In the gasoline device course of normal operation, because the throat tubular construction characteristic causes trunnion place air velocity to increase, thereby produce certain degree of vacuum, promptly trunnion place pressure is less than atmospheric pressure.Because the air pressure in the float chamber is similar to atmospheric pressure, so certain pressure difference is arranged between float chamber and trunnion.Because the existence of pressure difference, gasoline enters the main jet pipe via main jet from float chamber, and is sucked into trunnion, produces the mixed gas of atomizing, enters cylinder through closure, participates in burning.Because the aperture of closure can have influence on the air pressure at trunnion place, thereby can control air-fuel mixture amount by the control throttle opening, promptly throttle opening reduces, and the mixed gas that enters cylinder reduces the also corresponding reduction of the power of petrol engine.
In the prior art, during the petrol engine cold start-up, because rotating speed is low, throttle opening is minimum, trunnion place air velocity is very little, thereby make the pressure difference between trunnion and float chamber very little, cause in the mixed gas that enters cylinder gasoline vapor very little, the gasoline that enters cylinder is difficult for atomizing.The comprehensive like this mixed gas that caused is rare excessively, can not fire burns.For improving mixture strength, original gasoline device utilizes chock plate, by reducing the aperture of chock plate, reduces air inflow, thereby has improved the concentration of mixed gas to a certain extent, makes cold start-up become relatively easy.But under the low environment of temperature,, need more gasoline to participate in atomizing under the cold start-up operating mode and satisfy the mixture strength of combustion condition, and only utilize choke gate-type structure can't obtain the mixed gas that this requires concentration with acquisition because gasoline atomizing is not enough.
The present invention utilizes hand-operated pump oil device can obtain to satisfy the mixed gas of gasoline engine starting requirement concentration under the extremely low temperature.Before gasoline engine starting, at first manually bring pressure to bear on the upgrading valve of pump oil device, the extruding upgrading valve increases the gas pressure in the upgrading valve, forces gas to enter float chamber through the overbalance sebific duct, removes pressure then.3～5 times so repeatedly, make abundant gas enter float chamber, and cause the pressure of the interior gas pressure of float chamber greater than main jet pipe outlet port trunnion, thus make the gasoline in the float chamber spray into trunnion in moment, the gasoline that sprays into can produce the mixture strength that satisfies combustion requirements.
Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (4)
1, a kind of ultra low temperature environment protection type gasoline device, comprise mixing chamber and float chamber, described float chamber is provided with the equalizing orifice body, described equalizing orifice body is provided with the equalizing orifice connecting head that is tightly connected with the balance sebific duct, it is characterized in that, also comprise hand pump oil device, described hand pump oil device comprises enriching valve seat and rubber upgrading valve, described enriching valve seat is provided with the outlet pipe that is connected with the equalizing orifice connecting head by the balance sebific duct, the periphery of described outlet pipe is provided with the step of two-stage at least that links to each other with the balance sebific duct, corresponding position with described step on the balance sebific duct periphery is provided with jump ring, and the lower end of outlet pipe is provided with the annular slot under shed; Described upgrading valve comprises the body that is provided with cavity, and the upper end of described upgrading valve body is provided with the cambered outwards annular solid that is tightly connected with annular slot, and the bottom of described upgrading valve body is provided with inlet hole.
2, ultra low temperature environment protection type gasoline device according to claim 1 is characterized in that, the material of described upgrading valve is an epichlorohydrin rubber.
3, ultra low temperature environment protection type gasoline device according to claim 2 is characterized in that, the material of described enriching valve seat is a nylon 66.
According to claim 1 or 2 or 3 described ultra low temperature environment protection type gasoline devices, it is characterized in that 4, the step on the described outlet pipe periphery is a two-stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100620348A CN101280740A (en) | 2008-05-23 | 2008-05-23 | Ultra low temperature environment protection type gasoline device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100620348A CN101280740A (en) | 2008-05-23 | 2008-05-23 | Ultra low temperature environment protection type gasoline device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101280740A true CN101280740A (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100620348A Pending CN101280740A (en) | 2008-05-23 | 2008-05-23 | Ultra low temperature environment protection type gasoline device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101280740A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022226A (en) * | 2010-12-13 | 2011-04-20 | 福鼎市佳磐通用部件有限公司 | Cold-starting enrichment device and carburetor provided with cold-starting enrichment device |
| CN104279081A (en) * | 2013-07-05 | 2015-01-14 | 宁德市鑫明动力配件有限公司 | Improved carburetor |
-
2008
- 2008-05-23 CN CNA2008100620348A patent/CN101280740A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022226A (en) * | 2010-12-13 | 2011-04-20 | 福鼎市佳磐通用部件有限公司 | Cold-starting enrichment device and carburetor provided with cold-starting enrichment device |
| CN102022226B (en) * | 2010-12-13 | 2014-04-02 | 福鼎市佳磐通用部件有限公司 | Cold-starting enrichment device and carburetor provided with cold-starting enrichment device |
| CN104279081A (en) * | 2013-07-05 | 2015-01-14 | 宁德市鑫明动力配件有限公司 | Improved carburetor |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20081008 |