CN103670773A - Four-valve gas engine - Google Patents
Four-valve gas engine Download PDFInfo
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- CN103670773A CN103670773A CN201210345192.0A CN201210345192A CN103670773A CN 103670773 A CN103670773 A CN 103670773A CN 201210345192 A CN201210345192 A CN 201210345192A CN 103670773 A CN103670773 A CN 103670773A
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- longitudinal axis
- spark plug
- mounting hole
- cylinder sleeve
- plug mounting
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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 four-valve gas engine which comprises a cylinder sleeve, a cylinder cover and a piston. The cylinder cover is arranged at the top of the cylinder sleeve, a deep-basin-shaped combustion chamber is arranged at the top of the piston, the central longitudinal axis of the combustion chamber is positioned on one side of that of the cylinder sleeve, the cylinder cover is provided with a spark plug mounting hole, and the axis of the spark plug mounting hole is positioned on the other side of the central longitudinal axis of the cylinder sleeve. The four-valve gas engine is simple and reasonable in structure, the central longitudinal axis of the combustion chamber and the axis of the spark plug mounting hole are arranged on the two sides of the central longitudinal axis of the cylinder sleeve respectively, and through intake swirl, flame transmission speed of the combustion chamber is increased, combustion duration is shortened, combustion consumption rate is decreased, and reliability of an exhaust system is improved.
Description
Technical field
The present invention relates to field of internal combustion engine, particularly a kind of four valve gas engines.
Background technique
Gas engine output is fewer at present, and manufacturer, in order to guarantee the profit, adopts diesel engine simple refit to make gas engine substantially.Therefore the gas engine that repacking is produced at present has following characteristics:
The one, intake and exhaust port is used diesel engine completely.For gas engine, although employing ignition way, owing to substantially using at present diesel engine cylinder cover, so in cylinder, air-flow is also the eddy current (air-flow rotating around the cylinder sleeve longitudinal axis in eddy current-cylinder, be generally used for compression ignition engine, as diesel engine etc.).The air-flow that diesel engine cylinder cover intake duct makes to enter in cylinder is eddy current, rather than roll stream and (roll the air-flow rotating around transverse axis in stream-cylinder, be generally used for spark-ignition engine, as petrol engine etc.), the fuel oil that eddy current can spray into oil sprayer is with flow rotation, and air-fuel mixture uniformity is improved like this, thereby improves burning, improve discharge, so eddy current is very favorable to diesel engine; Yet eddy current is to gas engine, use is little, because the burning of gas engine and air are pre-mixed, does not therefore need eddy current to improve mixing uniformity.The stream that rolls that need to be used for strengthening velocity of propagation of flame does not have.
The 2nd, the direct spark plug mounting hole that oil spraying device of diesel oil engine hole is arranged to gas engine, as depicted in figs. 1 and 2, gas engine comprises: cylinder sleeve 1, cylinder cap 2 and piston 3, cylinder cap 2 is located at cylinder sleeve 1 top, and piston 3 moves up and down in cylinder sleeve 1; Piston 3 tops offer deep dish firing chamber 31; Wherein, the center longitudinal axis 11 of cylinder sleeve 1 is positioned at the left side of the center longitudinal axis 32 of firing chamber 31.
On cylinder cap 2, offer respectively two intake duct holes 21, two gas-discharging channel holes 22 and spark plug mounting hole 23, wherein, two intake duct holes 21 are distributed in cylinder cap 2 left sides, two gas-discharging channel holes 22 are distributed in cylinder cap 2 right sides, spark plug mounting hole 23 is positioned in the middle of two intake duct holes 21 and two gas-discharging channel holes 22, because four diesel engine are in order to reduce intake resistance, improve air inflow, conventionally intake valve is larger than exhaust valve, make oil injector hole generally be positioned at the inclined to one side air outlet flue side of cylinder sleeve 1 center longitudinal axis 11, 32 of firing chamber 31 center longitudinal axis are consistent with oil sprayer center, be positioned at equally the inclined to one side air outlet flue side of cylinder sleeve 1 center longitudinal axis 11, make like this to repack into spark plug mounting hole 23 and be also naturally positioned at (spark plug mounting hole 23 axis overlap with firing chamber 31 center longitudinal axis 32) on 31 center longitudinal axis 32 of firing chamber, and be co-located at the right side (deflection air outlet flue side) of cylinder sleeve 1 center longitudinal axis 11.
There is following shortcoming with the layout that firing chamber 31 center longitudinal axis 32 overlap in spark plug mounting hole 23 axis: the one, and spark plug is positioned at center, firing chamber, and before igniting, gas in the jar is squeezed in firing chamber in piston moves upward process, the eddy current of air inlet is centered close to 31 center longitudinal axis 32 places, firing chamber, thereby eddy current center is substantially consistent with spark plug center, and eddy current central gas stream speed is very low, near the gas of spark plug first eddy current center fire lights eddy current center, by this gas, flame is propagated to the gas of surrounding again, at this moment eddy current central gas stream speed is very low, be unfavorable for accelerating velocity of propagation of flame, combustion duration is long, specific fuel consumption is high, the 2nd, because velocity of propagation of flame is slow, if ignition angle is easily caused to pinking in advance, if ignition angle is postponed, can cause delivery temperature high, reduce the reliability of vent systems.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, provide a kind of simple and reasonable, firing chamber center longitudinal axis and spark plug mounting hole axis are arranged in the both sides of cylinder sleeve center longitudinal axis, by intake swirl, improved the velocity of propagation of flame combustion chamber, combustion duration is short, specific fuel consumption is low, and four high valve gas engines of vent systems reliability.
For achieving the above object, according to the invention provides a kind of four valve gas engines, comprising: cylinder sleeve, cylinder cap and piston, cylinder cap is located at cylinder sleeve top, and the top of piston offers deep dish firing chamber; The center longitudinal axis of firing chamber is positioned at a side of cylinder sleeve center longitudinal axis; Cylinder cap offers spark plug mounting hole, and the axis of spark plug mounting hole is positioned at the opposite side of cylinder sleeve center longitudinal axis.
In technique scheme, also offer two intake duct holes and two gas-discharging channel holes on cylinder cap, spark plug mounting hole is positioned in the middle of two intake duct holes and two gas-discharging channel holes, and a side of two gas-discharging channel holes of deflection.
In technique scheme, the lateral separation of firing chamber center longitudinal axis and spark plug mounting hole axis misalignment is 5-20mm.
Compared with prior art, the present invention has following beneficial effect: this four valves gas engine is simple and reasonable, firing chamber center longitudinal axis and spark plug mounting hole axis are arranged in the both sides of cylinder sleeve center longitudinal axis, by intake swirl, improved the velocity of propagation of flame combustion chamber, shortened combustion duration, reduce specific fuel consumption, and improved the reliability of vent systems.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing four valve gas engines;
Fig. 2 is the sectional structure schematic diagram of the A-A direction of Fig. 1;
Fig. 3 is the structural representation of four valve gas engines of the present invention;
Fig. 4 is the sectional structure schematic diagram of the B-B direction of Fig. 3;
Description of reference numerals:
1-cylinder sleeve, 11-center longitudinal axis, 2-cylinder cap, 21-intake duct hole, 22-gas-discharging channel hole, 23-spark plug mounting hole, 3-piston, 31-firing chamber, 32-center longitudinal axis, 4-cylinder sleeve, 41-center longitudinal axis, 5-cylinder cap, 51-intake duct hole, 52-gas-discharging channel hole, 53-spark plug mounting hole, 54-axis, 6-piston, 61-firing chamber, 62-center longitudinal axis.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technological scheme of the present invention.
As shown in Figure 3 and Figure 4, four valve gas engines of the present invention are reequiped by four-valve diesel engine, firing chamber center longitudinal axis and spark plug mounting hole axis are arranged in to the both sides of cylinder sleeve center longitudinal axis, by intake swirl, improve the velocity of propagation of flame combustion chamber, shorten combustion duration, reduce specific fuel consumption, and improve the reliability of vent systems, concrete structure comprises: cylinder sleeve 4, cylinder cap 5 and piston 6, cylinder cap 5 lids are located at cylinder sleeve 4 tops, form the cavity that moves up and down of piston 6; Piston 6 is positioned at this motion cavity, and top offers deep dish firing chamber 61; Wherein, firing chamber 61 center longitudinal axis 62 are positioned at the left side of cylinder sleeve 4 center longitudinal axis 41.
On cylinder cap 5, offer respectively two intake duct holes 51, two gas-discharging channel holes 52 and spark plug mounting hole 53, wherein, two intake duct holes 51 are distributed in cylinder cap 5 left sides, two gas-discharging channel holes 52 are distributed in cylinder cap 5 right sides, spark plug mounting hole 53 is positioned in the middle of two intake duct holes 51 and two gas-discharging channel holes 52, because former diesel engine is in order to reduce intake resistance, improve air inflow, conventionally intake valve is larger than exhaust valve, for fear of entering two intake duct holes 51, interfere with the edge of cylinder cap 5, make the spark plug mounting hole 53 being repacked into by oil injector hole be positioned at a side of being partial to two gas-discharging channel holes 52, from sectional view, can find out, the axis 54 of spark plug mounting hole 53 is positioned at the right side of cylinder sleeve 4 center longitudinal axis 41.
Like this, as shown in Figure 4, the axis 54 of firing chamber 61 center longitudinal axis 62 and spark plug mounting hole 53 is arranged in the both sides of cylinder sleeve 4 center longitudinal axis 41, it is a side of firing chamber 61 center longitudinal axis 62 deflection gas-discharging channel holes 52, one side in the axis 54 deflection intake duct holes 51 of spark plug mounting hole 53, make the axis 54 of firing chamber 61 center longitudinal axis 62 and the spark plug mounting hole 53 one section of suitable lateral separation that staggers, this lateral separation is 5-20mm.
Now, spark plug is near the inflammable gas of axis 54 of light up plug mounting hole 53 first, because this inflammable gas of lighting is not or not the very low eddy current center of airspeed (61 center longitudinal axis 62 places, firing chamber), make this inflammable gas of lighting can utilize eddy current to accelerate the flame velocity of propagation of inflammable gas towards periphery, thereby shortening combustion duration, reduce specific fuel consumption, reduce delivery temperature; Avoid the pinking causing in advance because of ignition angle, and the delivery temperature that ignition angle postponement causes is high, and then improves vent systems reliability.
This four valves gas engine is simple and reasonable, firing chamber center longitudinal axis and spark plug mounting hole axis are arranged in the both sides of cylinder sleeve center longitudinal axis, by intake swirl, improved the velocity of propagation of flame combustion chamber, shortened combustion duration, reduce specific fuel consumption, and improved the reliability of vent systems.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (3)
1. four valve gas engines, is characterized in that, comprising: cylinder sleeve, cylinder cap and piston, and described cylinder cap is located at cylinder sleeve top, and the top of described piston offers deep dish firing chamber; The center longitudinal axis of described firing chamber is positioned at a side of described cylinder sleeve center longitudinal axis; Described cylinder cap offers spark plug mounting hole, and the axis of described spark plug mounting hole is positioned at the opposite side of described cylinder sleeve center longitudinal axis.
2. four valve gas engines according to claim 1, it is characterized in that: on described cylinder cap, also offer two intake duct holes and two gas-discharging channel holes, described spark plug mounting hole is positioned in the middle of described two intake duct holes and two gas-discharging channel holes, and is partial to a side of described two gas-discharging channel holes.
3. four valve gas engines according to claim 1 and 2, is characterized in that: the lateral separation of described firing chamber center longitudinal axis and spark plug mounting hole axis misalignment is 5-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345192.0A CN103670773A (en) | 2012-09-18 | 2012-09-18 | Four-valve gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345192.0A CN103670773A (en) | 2012-09-18 | 2012-09-18 | Four-valve gas engine |
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| Publication Number | Publication Date |
|---|---|
| CN103670773A true CN103670773A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210345192.0A Pending CN103670773A (en) | 2012-09-18 | 2012-09-18 | Four-valve gas engine |
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| CN (1) | CN103670773A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106536889A (en) * | 2014-07-19 | 2017-03-22 | 道依茨股份公司 | Combustion method |
| CN107355297A (en) * | 2017-07-31 | 2017-11-17 | 天津大学 | A kind of engine chamber for using Fuel Petroleum burning instead suitable for diesel engine |
| CN112031920A (en) * | 2020-09-11 | 2020-12-04 | 潍柴动力股份有限公司 | Diesel engine combustion system and diesel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958604A (en) * | 1988-02-10 | 1990-09-25 | Toyota Jidosha Kabushiki Kaisha | Direct fuel injection type spark ignition internal combustion engine |
| US5140958A (en) * | 1990-06-27 | 1992-08-25 | Toyota Jidosha Kabushiki Kaisha | Two-stroke engine |
| US5305720A (en) * | 1992-02-28 | 1994-04-26 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Internal combustion engine |
| CN101440742A (en) * | 2008-12-30 | 2009-05-27 | 西安交通大学 | Direct spraying composite flow guide laminating combustion system in spark ignition methanol cylinder |
| CN102251843A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作公司 | Engine including valve geometry relative to bore size |
| CN202832821U (en) * | 2012-09-18 | 2013-03-27 | 广西玉柴机器股份有限公司 | Four-valve gas engine |
-
2012
- 2012-09-18 CN CN201210345192.0A patent/CN103670773A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958604A (en) * | 1988-02-10 | 1990-09-25 | Toyota Jidosha Kabushiki Kaisha | Direct fuel injection type spark ignition internal combustion engine |
| US5140958A (en) * | 1990-06-27 | 1992-08-25 | Toyota Jidosha Kabushiki Kaisha | Two-stroke engine |
| US5305720A (en) * | 1992-02-28 | 1994-04-26 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Internal combustion engine |
| CN101440742A (en) * | 2008-12-30 | 2009-05-27 | 西安交通大学 | Direct spraying composite flow guide laminating combustion system in spark ignition methanol cylinder |
| CN102251843A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作公司 | Engine including valve geometry relative to bore size |
| CN202832821U (en) * | 2012-09-18 | 2013-03-27 | 广西玉柴机器股份有限公司 | Four-valve gas engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106536889A (en) * | 2014-07-19 | 2017-03-22 | 道依茨股份公司 | Combustion method |
| CN107355297A (en) * | 2017-07-31 | 2017-11-17 | 天津大学 | A kind of engine chamber for using Fuel Petroleum burning instead suitable for diesel engine |
| CN107355297B (en) * | 2017-07-31 | 2022-12-09 | 天津大学 | Engine combustion chamber suitable for gasoline fuel combustion instead of diesel engine |
| CN112031920A (en) * | 2020-09-11 | 2020-12-04 | 潍柴动力股份有限公司 | Diesel engine combustion system and diesel engine |
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Application publication date: 20140326 |