CN2340912Y - Three air gates jetting combustion chamber of gasoline engine - Google Patents
Three air gates jetting combustion chamber of gasoline engine Download PDFInfo
- Publication number
- CN2340912Y CN2340912Y CN 98214978 CN98214978U CN2340912Y CN 2340912 Y CN2340912 Y CN 2340912Y CN 98214978 CN98214978 CN 98214978 CN 98214978 U CN98214978 U CN 98214978U CN 2340912 Y CN2340912 Y CN 2340912Y
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- China
- Prior art keywords
- jet
- valve
- combustion chamber
- chamber
- bore
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a gasoline engine with a three-valve jet combustion chamber. The utility model is characterized in that a jet combustion chamber, two inlet valves and one exhaust valve are arranged on an overhead valve and a cylinder cover for an overhead or side camshaft structure. Thereby, the gasoline engine not only has the characteristics of good fuel economy and low blowdown of a gasoline engine with double-valve jet combustion, but also has the characteristics of high rotation speed and large power of a three-valve gasoline engine.
Description
The utility model relates to a kind of three valve jet bore in combustion chamber petrol engine, and it belongs to the improvement of jet bore in combustion chamber petrol engine.
Each cylinder that present inventors develop has the dual valve jet bore in combustion chamber petrol engine of an intake valve and an exhaust valve, through practicing, its superiority is: improved the firing effect in the firing chamber, improve the Economy of fuel oil and the power performance of machine, also reduced exhaust pollution simultaneously.But practice has also proved that this petrol engine still has further and can improve part: one. its air exchange system is desirable not enough.Original dual valve jet bore in combustion chamber petrol engine, intake valve on each cylinder is consistent with the inblock cylinder column direction with the orientation of exhaust valve, inlet and exhaust valve is subjected to the restriction of cylinder dimensions, be difficult to strengthen again, therefore influenced the inlet of ozone and fuel mixture and the emptying of burning back waste gas.Two. the intake valve of jet bore in combustion chamber is long heavier, is unfavorable for improving petrol engine rotational speed, and therefore the peak output under maximum speed has been subjected to restriction.
Existing each cylinder is provided with the three valve petrol engine of two intake valves and an exhaust valve, because valve quantity is many, total cross section can increase during corresponding valve opening, therefore can inhale fresh air fully and the mixed gas of fuel oil, also can more unobstructed ground emptying waste gas, thus help the raising of peak output.With regard to each valve,, help improving the rotating speed and the power of petrol engine in addition because the less and light weight of size can reduce reciprocal inertia force.But the chamber structure of existing three valve petrol engine does not all adopt jet bore in combustion chamber, though improved rotating speed and power, because of not realizing the characteristics of jet combustion, its specific fuel consumption and pollutant emission index are advanced inadequately.
The purpose of this utility model is to provide a kind of three valve jet bore in combustion chamber petrol engine.This petrol engine both had dual valve jet bore in combustion chamber petrol engine high compression ratio, use the characteristics of weak mixture and rapid combustion, have the rotating speed height of three valve petrol engine, high-power characteristics again.
In order to achieve the above object, the utility model is realized by following proposal.Three valve jet combustion chamber petrol engine, mainly by cylinder, piston, formations such as cylinder head, adopt overhead valve and overhead type or side-mounted camshaft structure, it is characterized in that: on each cylinder of cylinder head along axis one side of inblock cylinder column direction, be symmetrical arranged two intake valves, opposite side is provided with the one jet chamber, space than the intake valve projection, an exhaust valve is set above the jet chamber, between two intake valves, be inclined upwardly from the cylinder head bottom surface and offer a jet hole and jet chamber upper chambers wall connects, on facing to the jet chamber wall of jet hole direction, be provided with spark plug; For guaranteeing the realization of the utility model technical characteristics, above-mentioned jet hole center line and cylinder head lower plane angle β are 28～37 °, and jet hole can be straight-through circular hole, or are straight-through conical bore, or are the ladder circular hole.
Fig. 1 is the structural representation worm's eye view of the utility model cylinder head.Fig. 2 is Figure 1A-A sectional view.1 is intake duct among the figure, and 2 is intake valve, and 3 is exhaust valve, and 4 is air outlet flue, and 5 is main combustion chamber, and 6 is jet hole, and 7 is spark plug, and 8 is the jet chamber, and 9 is the main passage, and 10 is cylinder, and 11 is piston.
The utility model is described in further detail below in conjunction with accompanying drawing.Constitute the agent structure of jet bore in combustion chamber in the utility model by jet hole 6 and jet chamber 8, its groundwork process is: in the exhaust process of piston stroking upward, an exhaust valve of jet bore in combustion chamber top is opened, air outlet flue and intake duct set up both sides again separately, air outlet flue can be designed more unobstructed, so can scavenge more neatly.Intake valve is opened when descent of piston, because have two intake valves and intake duct and air outlet flue to set up both sides separately, intake duct can be designed to such an extent that more unobstructedly help the more incoming mixture of inspiration,, the power character of original jet bore in combustion chamber further be improved so improved ventilation effect greatly.Compression process, be that piston is up once more, when the inlet and outlet door is all closed, inflammable gas is compressed in the cylinder, through main passage, jet bore in combustion chamber below and jet hole to enter jet indoor, the bump of two strands of air-flows makes the indoor inflammable gas of jet produce strong turbulent flow, comprise a large amount of micro swirls, kept the original characteristics of jet bore in combustion chamber.Behind spark plug sparking, the combustion flame Yin Gaowen of jet chamber expands, and regurgitates by jet hole and main passage and becomes owner of the combustion firing chamber.Therefore piston is near top dead center position the time, gap between piston and the cylinder head bottom surface is very little, so flame of regurgitating out and gas can form very strong micro swirl once more, can greatly improve velocity of combustion, the unburned gas that the while jet hole is guided the farthest into, there is very strong inhibition to produce the ability of detonation, original all advantages of jet bore in combustion chamber are all kept.
The utility model is to existing " ridge " (or Peng Ding) formula firing chamber three valve petrol engine, be " making something perfect even more perfect ", it has drawn three air valve structure characteristics, add the jet combustion technology, overcome the deficiency that " ridge " formula chamber structure is difficult to realize high compression ratio, weak mixture rapid combustion aspect; The utility model is compared with the petrol engine of the dual valve jet bore in combustion chamber of developing before us, be again " introduction synergy ", the utility model is except the good characteristics of the firing effect that kept former dual valve jet bore in combustion chamber petrol engine to be had, because of valve being transformed into the three valve structure, can improve rotating speed and power effectively, thereby make the utility model both have the characteristics that power is big, rotating speed is high of three valve petrol engine, have the high compression ratio that the jet bore in combustion chamber petrol engine has, the advantage of weak mixture rapid combustion again.Make the performance of petrol engine climb up a new step all sidedly.
Advantage of the present utility model: 1. the gasoline engine at existing two valves, three valve overhead type or side-mounted camshaft changes Make and be easy to realize; 2 because inlet and outlet road and inlet and outlet door branch are located at the both sides of cylinder head, have so can reduce because of inlet and outlet The head gasket that the temperature difference caused and brought more than 800 ℃ is fragile to be caused leaking gas affects the phenomenon in life-span; 3 because jet bore in combustion chamber The low and exhaust valve height of two inlet valves, not in one plane, air flue is arranged alone respectively, can be made air flue design more Add rationally, ventilation effect is improved, thereby the dynamic property of gasoline engine is improved, and fuel economy is better, and exhaust pollution more Low.
Claims (3)
1. three valve jet bore in combustion chamber petrol engine, mainly constitute by cylinder, piston, cylinder head etc., adopt overhead valve, it is characterized in that: the side along the axis of inblock cylinder column direction on each cylinder of cylinder head is symmetrical arranged two intake valves, opposite side is provided with the one jet chamber, space than the intake valve projection, an exhaust valve is set above the jet chamber, between two intake valves, tilt from the cylinder head bottom surface and to offer a jet hole and jet chamber upper chambers wall connects, on jet chamber wall, be provided with spark plug the jet hole direction.
2. according to the described three valve jet bore in combustion chamber of claim 1 petrol engine, it is characterized in that jet hole center line and cylinder head lower plane angle β are 28～37 °, jet hole can be straight-through circular hole, or is straight-through conical bore, or is the ladder circular hole.
3. according to the described three valve jet bore in combustion chamber of claim 1 petrol engine, it is characterized in that camshaft structure can adopt overhead type or side-mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98214978 CN2340912Y (en) | 1998-05-29 | 1998-05-29 | Three air gates jetting combustion chamber of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98214978 CN2340912Y (en) | 1998-05-29 | 1998-05-29 | Three air gates jetting combustion chamber of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2340912Y true CN2340912Y (en) | 1999-09-29 |
Family
ID=33968437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98214978 Expired - Fee Related CN2340912Y (en) | 1998-05-29 | 1998-05-29 | Three air gates jetting combustion chamber of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2340912Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518503A (en) * | 2011-12-19 | 2012-06-27 | 力帆实业(集团)股份有限公司 | Gas passage and combustion chamber structure of three-valve engine |
-
1998
- 1998-05-29 CN CN 98214978 patent/CN2340912Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518503A (en) * | 2011-12-19 | 2012-06-27 | 力帆实业(集团)股份有限公司 | Gas passage and combustion chamber structure of three-valve engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |