CN103422970B - A kind of ignition mechanism adopting the gas engine of precombustion chamber - Google Patents
A kind of ignition mechanism adopting the gas engine of precombustion chamber Download PDFInfo
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- CN103422970B CN103422970B CN201310300813.8A CN201310300813A CN103422970B CN 103422970 B CN103422970 B CN 103422970B CN 201310300813 A CN201310300813 A CN 201310300813A CN 103422970 B CN103422970 B CN 103422970B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a kind of ignition mechanism adopting the gas engine of precombustion chamber, comprise spark plug, main component, this ignition mechanism also comprises nozzle and suction valve, main component have be installed into air valve suction valve duct, precombustion chamber and installation nozzle port and for ignition mechanism being fixed on the assembly department in cylinder head, the electrode that rear spark plug installed by spark plug stretches in precombustion chamber, the air outlet of suction valve is also connected with precombustion chamber, and the gas inlet hole that the suction port of suction valve is then offered by the sidewall of main component is connected with outer combustion gas; Suction valve is breather cheek valve, for increasing combustion gas for precombustion chamber; Install the port of nozzle to be arranged on precombustion locular wall, the nozzle being arranged on this port is then for stretching in the cylinder of motor, and the combustion gas that spark plug is lighted at precombustion chamber is sprayed into by nozzle in the cylinder of motor lights a fire.The present invention can solve the ignition energy problem of gas engine and the concentration problems of mixed gas simultaneously.
Description
Technical field
The present invention relates to a kind of ignition mechanism of gas engine, specifically refer to a kind of ignition mechanism adopting the gas engine of precombustion chamber.
Background technique
The cylinder spark mode of existing gas engine adopts spark plug to light a fire mostly.Namely spark plug is directly installed in cylinder head, and the electrode of spark plug stretches into the firing chamber of motor, directly lights a fire to the combustion gas in firing chamber.In prior art, the ignition mechanism of gas engine as shown in Figure 1, this ignition mechanism comprises spark plug 5, main component 3, main component 3 is arranged in cylinder head 7, and spark plug 5 is vertically inserted on main component 3, and the bottom of spark plug 5 is stretched in the cylinder 8 of motor.
For motor itself, in cylinder, the thin then performance of inflammable mixture is good, on the contrary poor performance.But the ignition energy of spark plug is lower, thin mixed gas can not be lighted, need just can light when in-cylinder mixture strength is larger, therefore, current gas engine, for meeting plug ignition requirement, the concentration of inflammable mixture in raising cylinder of having to.Cause producing a series of negative effects such as such as engine heat load is high, output power is restricted, dynamic response is poor, gas consumption rate is high, emission performance is poor.Therefore, how to improve the concentration of mixed gas around spark plug, solve the problem that plug ignition energy is low, simultaneously can ensure that again in cylinder, mixed gas is thin mixed gas, thus reduce engine heat load, promote the output power of motor, improve dynamic response, reduce gas consumption, improve emission performance and then become a great problem that current gas engine faces.
Summary of the invention
The object of this invention is to provide a kind of ignition mechanism adopting the gas engine of precombustion chamber, this ignition mechanism arranges a precombustion chamber, the ignition space of spark plug being confined to one separates in the little space of coming with engine chamber, and improve gas concentration at this precombustion chamber, to meet the igniting requirement of spark plug, the interior maintenance of the cylinder of motor can be allowed again to use thin inflammable mixture simultaneously, improve operating mode, thus solve the contradictory problems between mixture strength that spark plug is suitable for because of ignition energy desired gas concentration and motor.
This purpose of the present invention is achieved by the following technical solution: a kind of ignition mechanism adopting the gas engine of precombustion chamber, comprise spark plug, main component, described main component has the spark plug duct of installing spark plug, it is characterized in that: this ignition mechanism also comprises nozzle and suction valve, described main component has the suction valve duct being installed into air valve, precombustion chamber is with the port of installation nozzle and for ignition mechanism being fixed on the assembly department in cylinder head, described spark plug and suction valve are inserted in spark plug duct on described main component and suction valve duct respectively, the electrode that rear spark plug installed by spark plug stretches in described precombustion chamber, the air outlet of suction valve is also connected with described precombustion chamber, the gas inlet hole that the suction port of suction valve is then offered by the sidewall of described main component is connected with outer combustion gas, described suction valve is breather cheek valve, for increasing combustion gas for described precombustion chamber, the port of described installation nozzle is arranged on precombustion locular wall, and the nozzle being arranged on this port is then for stretching in the cylinder of motor, and the combustion gas that spark plug is lighted at precombustion chamber is sprayed into by nozzle in the cylinder of motor lights a fire.
Working principle of the present invention is: precombustion chamber is communicated with the cylinder of motor by nozzle by ignition mechanism, and the work of motor is done manual work by air inlet → compression → igniting expansion → is vented is a work cycle:
When intake stroke, descent of piston in cylinder, the outer combustion gas pressure that suction valve of the present invention is communicated with is higher than the in-cylinder pressure in cylinder, ball valve in suction valve is opened, outer combustion gas enters precombustion chamber by suction valve, waste gas residual for the circulation of this office work is discharged in cylinder by nozzle simultaneously, till lower dead center, the combustion gas entered due to outer combustion gas accounts for 1% of the total air inflow of engine gas, therefore, combustion gas in precombustion chamber of the present invention enters in cylinder, little on the concentration impact of the comparatively thin combustion gas of cylinder.
During to compression stroke, engine piston is up, pressure in cylinder is far away higher than the pressure of described outer combustion gas, the combustion gas that cylinder is thin has part by described nozzle press-in precombustion chamber, and the outer combustion gas entered in lastrow journey with indoor mixes, and suction valve cuts out by jack-up ball valve simultaneously, outer combustion gas stops entering in precombustion chamber, the work combustion gas of cylinder is pressed in precombustion chamber gradually, and indoor combination gas concentration is improved, gradually till piston arrives top dead center.
During to expansion stroke, the electrode of spark plug discharges in precombustion chamber, because indoor fuel gas concentration is higher, electrode discharge a bit with, and spraying in cylinder by nozzle, by the combustion gas compressed in the whole cylinder that ignites, thin fuel gas buring expands, descent of piston acting is promoted, till lower dead center with good operating mode.
When entering exhaust stroke, piston stroking upward, pressure in the outer combustion gas pressure of suction valve of the present invention and cylinder is close, ball valve is in the threshold state of Push And Release, combustion gas a small amount of in cylinder enters precombustion chamber, the effect of clearing away waste gas can be played, complete a work cycle, then next new work cycle.
The present invention can adopt following corrective measure, described suction valve adopts following special one-way valve, to make ignition mechanism have the suitable bodily form, the space of suitable installation position: described suction valve has valve body, valve seat, valve pocket and ball valve, the external frame of valve body and valve pocket is cylindrical, valve seat is positioned at below valve body, valve pocket support valve seat described in being set with by trepanning, and valve pocket is connected with the bottom of valve body, described valve body has the blast tube be connected with gas inlet hole, this blast tube one end is positioned on the bottom end face of valve body, there is in described valve seat up big and down small ladder counterbore, comprise superposed large counterbore and the little counterbore being positioned at bottom, large counterbore is connected with the air outlet of blast tube, offer one and two counterbore in the middle part of valve seat all to intersect through cross through hole, the bottom of valve seat vertically offers the air outlet hole be connected with little counterbore, air outlet hole is connected with precombustion chamber, described ball valve is positioned at described large counterbore, the size of ball valve is greater than the air outlet of blast tube and the size of little counterbore, be less than the size of large counterbore, the gaseous-pressure of described ball valve in blast tube moves down higher than during gas pressure in precombustion chamber, combustion gas enters precombustion chamber after blast tube and valve seat, gas pressure in precombustion chamber is higher than the shutoff blast tube that moves up during gaseous-pressure in blast tube, the conducting of blast tube is controlled by ball valve, thus the concentration of adjustment precombustion indoor fuel gas, described nozzle is connected with the bottom of described main component, and is connected with described precombustion chamber.
In the present invention, the spark plug duct that described main component is offered and suction valve duct are all vertically offered, spark plug duct is connected with precombustion chamber, described main component is in valve opening road and the inclination duct also offering two ends between precombustion chamber and be connected with precombustion chamber with valve opening road respectively, described spark plug is inserted in described spark plug duct, described suction valve is inserted in described valve opening road, the air outlet hole that seat bottom portion is offered is connected with inclination duct, and air outlet hole is connected with described precombustion chamber by inclination duct.
In the present invention, the top in described valve opening road has tapped hole section, and the top of valve body has fastening stud, and valve body is inserted in valve opening road, and the fastening stud of valve body is threaded with the tapped hole section in valve opening road.
In the present invention, the blast tube that described valve body has is made up of the inlet hole of cross setting and the combustion gas duct of vertical setting, wherein, the inlet hole of blast tube is the suction port of described suction valve, described inlet hole is connected with the gas inlet hole of main component, combustion gas duct is circular duct, and the suction port in combustion gas duct is connected with inlet hole, and air outlet is connected with large counterbore.
In the present invention, described air outlet hole is eccentric through-hole, and the eccentric distance between the center line of air outlet hole and the center line of little counterbore is 0.5 ~ 1 millimeter, and eccentric through-hole makes ball valve with the effect rolling being subject to unbalanced force during air motion, plays honing effect to sealing surface.
In the present invention, the bottom of described valve body is for having externally threaded stud, and described valve pocket and stud opposite position place offer the female screw of tool, and valve pocket is connected with valve body screw thread.
In the present invention, the bottom of described main component has the screw be connected with precombustion chamber, and the top of described nozzle is for having externally threaded stud, and described nozzle is threaded with the bottom of described main component; The bottom of described nozzle has the spray orifice of several oblique layouts, for leading to the cylinders of motor
In the present invention, described nozzle and described main body be also provided with seal washer between mating face up and down.
In the present invention, the inflammable mixture that in the middle part of installation cavity, the cooling liquid of surrounding, outer combustion gas and cylinder are thin enters gas storage chamber, makes the operating temperature that this device remains suitable.
In the present invention, the external cylindrical surface of described main body circumferentially offers some roads sealer ring recess, is all provided with a circle cushion rubber in every one O-ring seal groove.
Compared with prior art, the inflammable mixture of ignition mechanism of the present invention is that concentration is higher from mixed gas thin in cylinder and total mixed gas of combustion gas of independently entering, volume be about piston when upper dead center volume of cylinder 2%.During engine operation, the rich mixture of spark ignitor ignition mechanism, burning things which may cause a fire disaster energy is exaggerated, and the mixed gas that the whole cylinder that ignites is thin promotes piston acting.Reach the igniting of motor and run all in the object carrying out work under the combustion gas concentration be applicable to separately
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail;
Fig. 1 is that in prior art, ignition mechanism is arranged on the using state reference drawing on cylinder;
Fig. 2 is the using state reference drawing that ignition mechanism of the present invention is arranged on cylinder;
Fig. 3 is the integral installation figure of ignition mechanism of the present invention;
Fig. 4 is the parts drawing of spark plug in ignition mechanism of the present invention;
Fig. 5 is the parts drawing of nozzle in ignition mechanism of the present invention;
Fig. 6 is the parts drawing of main body in ignition mechanism of the present invention;
Fig. 7 is the parts drawing of suction valve in ignition mechanism of the present invention;
Fig. 8 is that the A of Fig. 7 is to enlarged view;
Fig. 9 is the parts drawing of valve pocket in ignition mechanism of the present invention;
Figure 10 is the parts drawing of valve seat in ignition mechanism of the present invention;
Figure 11 is B-B sectional view of Figure 10.
Description of reference numerals
1, installation cavity; 2, nozzle; 21, supporting surface; 22, stud; 23, counterbore; 24, passage; 25, spray orifice; 3, main component; 31, precombustion chamber; 32, screw; 33, spark plug duct; 34, suction valve duct; 35, screw thread; 36, tapped hole section; 37, the conical surface; 38, inclination duct; 39, aprons slot; 310, cushion rubber; 311, gas inlet hole; 312, aprons slot; 313, cushion rubber; 314, hole; 4, suction valve; 41, valve pocket; 411, the conical surface; 412, through hole; 413, counterbore; 414, screw; 415, supporting surface; 42, valve seat; 421, large counterbore; 422, conical surface; 423, little counterbore; 424, air outlet hole; 425, cross through hole; 426, bottom supporting face; 427, top-supported face; 43, valve body; 431, hexagon head; 432, aprons slot; 433, fastening stud; 434, body base supporting surface; 435, stud; 436, combustion gas duct; 437, inlet hole; 438, bottom chamfer; 44, ball valve; 45 O-ring seals; 5, spark plug; 51, spark cock body; 52, joint; 53, spark plug thread; 54, electrode; 6, seal washer; 7, cylinder head; 8, cylinder; 9, sleeve
Embodiment
The ignition mechanism of a kind of gas engine as shown in Figures 2 to 11, comprise nozzle 2, main component 3, suction valve 4, spark plug 5 and seal washer 6, spark plug 5 upper end is also set with sleeve 9, play a protective role, one is offered for installing the installation cavity 1 of main component 3 in the central authorities of cylinder of gas engine lid 7, in the middle part of installation cavity 1, surrounding is cooling liquid, the bottom of installation cavity 1 and supporting surface 21 close contact of nozzle 2, some roads O-ring seal is provided with between the top of installation cavity 1 and main component 3, play seal action, nozzle 2 top is for having externally threaded stud 22, center offers a broad counterbore 23, bottom has the spray orifice 25 of several oblique layouts, there is bottom counterbore 23 passage 24, this passage 24 is connected with the spray orifice 25 of oblique setting, for being communicated with the cylinder of motor.
Main component 3 has the spark plug duct 33 of installing spark plug 5, be installed into the suction valve duct 34 of air valve 4, precombustion chamber 31 is with the port of installation nozzle 2 and for ignition mechanism being fixed on the assembly department in cylinder head 7, spark plug 5 and suction valve 4 are inserted in spark plug duct 33 on main component 3 and suction valve duct 34 respectively, the electrode 54 that rear spark plug 5 installed by spark plug 5 stretches in precombustion chamber 31, the air outlet of suction valve 4 is also connected with precombustion chamber 31, the gas inlet hole 311 that the suction port of suction valve 4 is then offered by the sidewall of main component 31 is connected with outer combustion gas, suction valve 4 is breather cheek valve, for increasing combustion gas for precombustion chamber 31, install the port of nozzle to be arranged on precombustion chamber 31 wall, 2, the nozzle being arranged on this port is for stretching in the cylinder 8 of motor, and the combustion gas that spark plug 5 is lighted at precombustion chamber 31 is sprayed into by nozzle 2 in the cylinder 8 of motor lights a fire.
In the present embodiment, spark plug 5 and suction valve 4 are all vertically inserted on main component 3, spark plug duct 33 and suction valve duct 34 be arranged in parallel, spark plug duct 33 is connected with precombustion chamber 31, the electrode 54 that rear spark plug 5 installed by spark plug 5 is positioned at precombustion chamber 31, main component 3 also offers the inclination duct 38 that two ends are connected with precombustion chamber 31 with suction valve duct 34 respectively between suction valve duct 34 with precombustion chamber 31, spark plug 5 is inserted in spark plug duct 33, suction valve 4 is inserted in suction valve duct 34, the air outlet hole 424 offered bottom valve seat 42 is connected with 38, the sidewall of main component 3 offers gas inlet hole 311, a screw thread 35 is had bottom the spark plug duct 33 of installation spark plug 5, a tapped hole section 36 is had above the suction valve duct 34 being installed into air valve 4, the conical surface 37 is arranged at bottom, an inclination duct 38 is had bottom the conical surface 37, namely the oblique main component 3 that is opened in inclination duct 38 is between precombustion chamber 31 and suction valve duct 34, main component top external cylindrical surface is provided with some roads sealer ring recess 39, in every one O-ring seal groove 39, a circle cushion rubber 310 is all installed, gas inlet hole 311 is between sealer ring recess 39, the aprons slot 312 that the upper end of main component 3 has one to have a seal action, cushion rubber 313 is installed in aprons slot 312, the Ge Youyi hole, upper end flange two side 314 of main component 3, clamping bolt is fixed on main component 3 in cylinder head 7 by two holes 314, thus this device is fixed in cylinder head 7, nozzle 2 and main component 3 pass through scyewed joint, seal washer 6 is had between joint, the bottom of main component 3 has the screw 32 be connected with precombustion chamber 31, nozzle 2 is by the screw 32 of stud 22 precession main component 3, be threaded with the bottom of main component 3, nozzle 2 spins after main component 3, the spray orifice 25 of nozzle 2 is connected with the precombustion chamber 31 of main component 3 by passage.For improving the connection sealing energy between nozzle 2 and main component 3, nozzle 2 and main component 3 be also provided with seal washer 6 between mating face up and down.
Described suction valve 4 comprises valve pocket 41, valve seat 42, valve body 43, non-return valve 44 and O-ring seal 45, the external frame of valve body 43 and valve pocket 41 is cylindrical, the conical surface 37 close contact bottom valve pocket 41 lower tapered surface 411 and main component mounting hole, the counterbore 413 and through hole 412 that connect is offered along medial axis, wherein, counterbore 413 is positioned at top, through hole 412 is positioned at bottom, counterbore 413 is arranged at top, the counterbore 413 on top is namely as the trepanning of valve pocket 41, suit valve seat 42, the through hole 412 of bottom is the air outlet of suction valve 4, there is screw thread 414 in the aperture of counterbore, counterbore base has supporting surface 415, valve seat 42 is positioned at below valve body 43, valve pocket 41 is by trepanning support and be set with valve seat 42, and valve pocket 41 is connected with the bottom of valve body 43, valve seat 42 also has bottom supporting face 426 and top-supported face 427, top-supported face 427 is for supporting valve body 43, bottom supporting face 426 support is on valve pocket 41, valve pocket 41 with the concrete linkage structure of valve body 43 is: the bottom of valve body 43 is for having externally threaded stud 435, valve pocket 41 and stud 435 opposite position place offer the female screw 414 of tool, valve pocket 41 is threaded with valve body 43, the top in suction valve duct 34 has tapped hole section 36, the top of valve body 43 has fastening stud 433, valve body 43 is inserted in suction valve duct 34, the fastening stud 433 of valve body 43 is threaded with the tapped hole section 36 in suction valve duct 34, valve body has combustion gas duct along medial axis, this combustion gas duct Single port is positioned at one end of valve body, this end claims valve body nose end, the other end in described combustion gas duct is blind hole, be positioned at the middle part of valve body, connected with described gas inlet hole by inlet hole, valve body 43 has the blast tube be connected with gas inlet hole 311, one end of this blast tube is positioned on the bottom end face of valve body, this blast tube is made up of the inlet hole 437 of cross setting and the combustion gas duct 436 of vertical setting, wherein, the inlet hole 437 of blast tube is the suction port of suction valve 4, inlet hole 437 is connected with the gas inlet hole 311 of main component 3, combustion gas duct 436 is circular duct, the suction port in combustion gas duct 436 is connected with inlet hole 437, air outlet is connected with the large counterbore 421 of valve seat 42, there is in valve seat 42 up big and down small concentric ladder counterbore, this ladder counterbore comprises a superposed circular large counterbore 421 and is positioned at the circular little counterbore 423 of of bottom, large counterbore 421 is connected with the circular air outlet of blast tube, the circular air outlet of blast tube is the circular air outlet in combustion gas duct 436, the cross through hole 425 that one and two counterbore all intersects through is offered in the middle part of valve seat 42, the bottom of valve seat 42 vertically offers the air outlet hole 424 be connected with little counterbore 423, the air outlet hole 424 offered bottom valve seat 42 is connected with inclination duct 38, air outlet hole 424 is connected by inclination duct 38 thus with the precombustion chamber 31 of main component 3, non-return valve 44 is positioned at large counterbore 421, the size of non-return valve 44 is greater than the air outlet of blast tube and the size of little counterbore 423, be less than the size of large counterbore 421, a hexagon head 431 is in addition arranged at the top of valve body 43, one aprons slot 432, one binding thread 433, supporting surface 434 is arranged at bottom, the bottom of valve body 43 is for having externally threaded stud 435, valve pocket 41 and stud 435 opposite position place offer the female screw 414 of tool, valve pocket 41 is threaded with valve body 43, chamfering 438 is arranged at the bottom in the combustion gas duct 436 that valve body 43 is vertically arranged, valve seat 42 is contained in valve pocket 41, bottom supporting face 426 bottom valve seat 42 and supporting surface 415 close contact of valve pocket counterbore, the bottom supporting face 434 of valve body 43 and top-supported face 427 close contact of valve seat 42.The gaseous-pressure of non-return valve 44 in blast tube moves down higher than during gas pressure in precombustion chamber 31, combustion gas enters precombustion chamber 31 after blast tube and valve seat 42, the gas pressure of non-return valve 44 in precombustion chamber 31 is higher than the shutoff blast tube that moves up during gaseous-pressure in blast tube, the conducting of blast tube is controlled by non-return valve 44, thus the concentration of combustion gas in adjustment precombustion chamber 31, to improve the concentration of mixed gas around spark plug, solve the problem that plug ignition energy is low, can ensure that again in cylinder, mixed gas is thin mixed gas simultaneously, ensure the performance that motor is good.
Air outlet hole 424 is eccentric through-hole, and the eccentric distance between the center line of air outlet hole 424 and the center line of little counterbore 423 is 0.5 millimeter, and this eccentric distance is value between 0.5 ~ 1 millimeter.The non-return valve 44 that the design of eccentric air outlet hole 424 makes in use is subject to the effect rolling of unbalanced force with air motion, honing effect is play to sealing surface, prevent non-return valve 44 from rising to fall is all conical surfaces that counterbore is touched at identical position at every turn, improves the working life of non-return valve 44.
In the present embodiment, air outlet hole 424, counterbore 413, through hole 412 connect from top to bottom, through hole 412 and inclination duct 38 connect, air outlet hole 424 is by being connected with precombustion chamber 31 with counterbore 413, through hole 412, inclination duct 38, and the through hole 412 of valve pocket 41 bottom is the air outlet of suction valve 4.
Described spark plug 5 has spark cock body 51, joint 52, spark plug thread 53 and electrode 54, joint 52 connects with external power supply, spark plug thread 53 spark plug 5 that is threaded with the screw thread 35 of main component 3 is fixed in spark plug duct 33, spark plug 5 is fixed rear electrode 54 and is positioned at precombustion chamber 31, for lighting the mixed gas in precombustion chamber 31.
In the present embodiment, carry out according to air inlet, compression, expansion, exhaust process circulation during engine operation.
When intake stroke, descent of piston, gaseous-pressure in blast tube is higher than the in-cylinder pressure in cylinder, non-return valve is touched with the conical surface 422 of little counterbore 423 after falling for 44 times, pure combustion gas enters from gas inlet hole 311, through inlet hole 437, combustion gas duct 436, large counterbore 421, little counterbore 423, cross through hole 425, eccentric air outlet hole 424, and enter precombustion chamber 31 behind the oblique inclination duct 38 offered, the waste gas that on precombustion chamber 31, a work cycle remains is with the purging of descent of piston and pure combustion gas, through counterbore 23, passage 24, spray orifice 25 is discharged to cylinder.
When compression stroke, piston stroking upward, pressure in cylinder is far away higher than the gaseous-pressure in blast tube, combustion gas stops entering, the thin inflammable mixture of cylinder is from the spray orifice 25 of oblique layout, enter precombustion chamber 31 through passage 24 and change the higher inflammable mixture of concentration into pure combustion gas mixing, non-return valve 44 is by jack-up and combustion gas duct 436 bottom chamfer 438 close contact, by the air outlet shutoff in combustion gas duct 436, thus the pure combustion gas in inflammable mixture higher for the concentration in precombustion chamber 31 and combustion gas duct 436 is isolated.
When expansion stroke, the electrode 53 of spark plug discharges, and lights the inflammable mixture that concentration in precombustion chamber 31 is higher, flame bamboo telegraph, through counterbore 23, passage 24, spray orifice 25, the thin inflammable mixture ignited in whole cylinder, promotes descent of piston acting.
In exhaust stroke, gaseous-pressure in blast tube and the pressure in cylinder close, non-return valve 44 is in the threshold state of Push And Release, the combustion gas entered from gas inlet hole 311 accounts for 1% of the total air inflow of engine gas, wherein a small amount of combustion gas enters precombustion chamber 31 in exhaust stroke, play the effect of clearing away waste gas, and little on the impact of motor fortune property Economy.
The inflammable mixture that in the middle part of installation cavity 1, the cooling liquid of surrounding, pure combustion gas and cylinder are thin enters precombustion chamber 31, makes the operating temperature that this device remains suitable.
The above embodiment of the present invention is not limiting the scope of the present invention; embodiments of the present invention are not limited thereto; according to foregoing of the present invention; according to ordinary technical knowledge and the customary means of related domain; do not departing under the present invention's above-mentioned basic fundamental thought prerequisite; to the amendment of other various ways that said structure of the present invention is made, replacement or change, all should drop within protection scope of the present invention.
Claims (9)
1. one kind adopts the ignition mechanism of the gas engine of precombustion chamber, comprise spark plug (5), main component (3), described main component (3) has the spark plug duct (33) of installation spark plug (5), it is characterized in that: this ignition mechanism also comprises nozzle (2) and suction valve (4), described main component (3) has the suction valve duct (34) being installed into air valve (4), precombustion chamber (31) and install nozzle (2) port and for ignition mechanism being fixed on the assembly department in cylinder head (7), described spark plug (5) and suction valve (4) are inserted in spark plug duct (33) on described main component (3) and suction valve duct (34) respectively, the electrode (54) that rear spark plug (5) installed by spark plug (5) stretches in described precombustion chamber (31), the air outlet of suction valve (4) is also connected with described precombustion chamber (31), the gas inlet hole (311) that the suction port of suction valve (4) is then offered by the sidewall of described main component (31) is connected with outer combustion gas, described suction valve (4) is breather cheek valve, for increasing combustion gas for described precombustion chamber (31), the port of described installation nozzle is arranged on precombustion chamber (31) wall, the nozzle (2) being arranged on this port is then for stretching in the cylinder (8) of motor, and the combustion gas that spark plug (5) is lighted at precombustion chamber (31) is sprayed into by nozzle (2) in the cylinder (8) of motor lights a fire, described suction valve (4) has valve body (43), valve seat (42), valve pocket (41) and ball valve (44), the external frame of valve body (43) and valve pocket (41) is cylindrical, valve seat (42) is positioned at valve body (43) below, valve pocket (41) support valve seat (42) described in being set with by trepanning, and valve pocket (41) is connected with the bottom of valve body (43), described valve body (43) has the blast tube be connected with gas inlet hole (311), this blast tube one end is positioned on the bottom end face of valve body, in described valve seat (42), there is up big and down small ladder counterbore, comprise superposed large counterbore (421) and be positioned at the little counterbore (423) of bottom, large counterbore (421) is connected with the air outlet of blast tube, valve seat (42) middle part offers the cross through hole (425) that one and two counterbore all intersects through, the bottom of valve seat (42) vertically offers the air outlet hole (424) be connected with little counterbore (423), air outlet hole (424) is connected with precombustion chamber (31), described ball valve (44) is positioned at described large counterbore (421), the size of ball valve (44) is greater than the air outlet of blast tube and the size of little counterbore (423), be less than the size of large counterbore (421), the gaseous-pressure of described ball valve (44) in blast tube moves down higher than during gas pressure in precombustion chamber (31), combustion gas enters precombustion chamber (31) after blast tube and valve seat (42), gas pressure in precombustion chamber (31) is higher than the shutoff blast tube that moves up during gaseous-pressure in blast tube, the conducting of blast tube is controlled by ball valve (44), thus the concentration of adjustment precombustion chamber (31) interior combustion gas, described nozzle (2) is connected with the bottom of described main component (3), and is connected with described precombustion chamber (31).
2. the ignition mechanism of the gas engine of employing precombustion chamber according to claim 1, it is characterized in that: the spark plug duct (33) that described main component (3) is offered and suction valve duct (34) are all vertically offered, spark plug duct (33) is connected with precombustion chamber (31), described main component (3) also offers the inclination duct (38) that two ends are connected with precombustion chamber (31) with valve opening road (34) respectively between valve opening road (34) with precombustion chamber (31), described spark plug (5) is inserted in described spark plug duct (33), described suction valve (4) is inserted in described valve opening road (34), the air outlet hole (424) that valve seat (42) bottom is offered is connected with inclination duct (38), air outlet hole (424) is connected with described precombustion chamber (31) by inclination duct (38).
3. the ignition mechanism of the gas engine of employing precombustion chamber according to claim 2, it is characterized in that: the top of described valve opening road (34) has tapped hole section (36), the top of valve body (43) has fastening stud (433), valve body (43) is inserted in valve opening road (34), and the fastening stud (433) of valve body (43) is threaded with the tapped hole section (36) of valve opening road (34).
4. the ignition mechanism of the gas engine of employing precombustion chamber according to claim 3, it is characterized in that: the blast tube that described valve body (43) has is made up of the inlet hole (437) of cross setting and the combustion gas duct (436) of vertical setting, wherein, the inlet hole (437) of blast tube is the suction port of described suction valve (4), described inlet hole (437) is connected with the gas inlet hole (311) of main component (3), combustion gas duct (436) is circular duct, the suction port in combustion gas duct (436) is connected with inlet hole (437), air outlet is connected with large counterbore (421).
5. the ignition mechanism of the gas engine of employing precombustion chamber according to claim 4, it is characterized in that: described air outlet hole (424) is eccentric through-hole, eccentric distance between the center line of air outlet hole (424) and the center line of little counterbore (423) is 0.5 ~ 1 millimeter, eccentric through-hole makes ball valve (44) with the effect rolling being subject to unbalanced force during air motion, plays honing effect to sealing surface.
6. the ignition mechanism of the gas engine of the employing precombustion chamber according to any one of claim 1 to 5, it is characterized in that: the bottom of described valve body (43) is for having externally threaded stud (435), described valve pocket (41) and stud (435) opposite position place offer the female screw of tool (414), and valve pocket (41) is threaded with valve body (43).
7. the ignition mechanism of the gas engine of the employing precombustion chamber according to any one of claim 1 to 5, it is characterized in that: the bottom of described main component (3) has the screw (32) be connected with precombustion chamber (31), the top of described nozzle (2) is for having externally threaded stud (22), and described nozzle (2) is threaded with the bottom of described main component (3); The bottom of described nozzle (2) has the spray orifice (25) of several oblique layouts, for leading to the cylinders of motor.
8. the ignition mechanism of the gas engine of employing precombustion chamber according to claim 7, is characterized in that: described nozzle (2) and described main component (3) be also provided with seal washer (6) between mating face up and down.
9. the ignition mechanism of the gas engine of the employing precombustion chamber according to any one of claim 1 to 5, it is characterized in that: the external cylindrical surface of described main component (3) circumferentially offers some roads sealer ring recess (39), in every one O-ring seal groove (39), a circle cushion rubber (310) is all installed.
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| CN201310300813.8A CN103422970B (en) | 2013-07-17 | 2013-07-17 | A kind of ignition mechanism adopting the gas engine of precombustion chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106016363A (en) * | 2016-05-17 | 2016-10-12 | 中国人民解放军63820部队吸气式高超声速技术研究中心 | Igniter |
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| CN104913936B (en) * | 2015-06-09 | 2018-03-30 | 中国科学院广州能源研究所 | Single inlet and outlet miniature scale CONSTANT VOLUME MODEL COMBUSTION CHAMBER |
| CN105318047B (en) * | 2015-11-18 | 2018-01-16 | 中国船舶重工集团公司第七一一研究所 | Check valve, gas engine precombustion chamber and gas engine |
| CN106894934A (en) * | 2017-03-24 | 2017-06-27 | 潍柴动力股份有限公司 | Spark plug and the engine with spark plug |
| DE102017005478B3 (en) * | 2017-06-08 | 2018-09-27 | L'orange Gmbh | fuel injector |
| CN108023276B (en) * | 2017-08-08 | 2020-04-28 | 应用太空科技有限公司 | Spark plug |
| AT522050B1 (en) * | 2019-01-22 | 2020-09-15 | Avl List Gmbh | LIQUID-COOLED COMBUSTION MACHINE |
| CN109989822A (en) * | 2019-04-10 | 2019-07-09 | 广西玉柴机器股份有限公司 | Gas engine pre-combustion chamber |
| CN115263527B (en) * | 2022-07-07 | 2023-06-23 | 广西玉柴机器股份有限公司 | Ignition device with active intake prechamber |
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| CN1563681A (en) * | 2004-03-18 | 2005-01-12 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| CN101008338A (en) * | 2006-01-28 | 2007-08-01 | 田恩泽 | Dual-fuel hot compression engine |
| CN101855427A (en) * | 2007-11-09 | 2010-10-06 | 瓦锡兰芬兰有限公司 | Prechamber arrangement of a combustion engine |
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| CN106016363A (en) * | 2016-05-17 | 2016-10-12 | 中国人民解放军63820部队吸气式高超声速技术研究中心 | Igniter |
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| CN103422970A (en) | 2013-12-04 |
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