CN207212485U - A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine - Google Patents
A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine Download PDFInfo
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- CN207212485U CN207212485U CN201720940189.1U CN201720940189U CN207212485U CN 207212485 U CN207212485 U CN 207212485U CN 201720940189 U CN201720940189 U CN 201720940189U CN 207212485 U CN207212485 U CN 207212485U
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- central slot
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- diesel engine
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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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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine, the space surrounded by cylinder cover bottom surface, cylinder wall surface and piston-top surface is formed, and the cylinder cover bottom surface is plane, and two inlet valves and two exhaust valves are distributed with；The center of the cylinder cover bottom surface is provided with spark plug；The piston-top surface is provided with a central slot and four jet flow grooves；The central slot is symmetrical on the basis of cylinder axis axis, and the insertion direction of the central slot is parallel with the two inlet valves bottom center line N；Four jet flow grooves are vertical with central slot insertion direction and are distributed in central slot both sides in two row parallel and symmetricals on the basis of cylinder axis axis.The utility model engine chamber can accelerate rate of flame propagation, improve combustion process so that diesel engine can still realize the of a relatively high thermal efficiency and power per liter after using Fuel Petroleum instead.
Description
Technical field
Engine combustion chamber structure design optimization is the utility model is related to, particularly one kind uses vapour instead on the basis of diesel engine
The engine chamber of oil fuel.
Background technology
Large diesel engine soot and discharged nitrous oxides are one of main factors for causing current environment to pollute, for this
One problem, Abgasgesetz constantly upgrade, and in turn result in large diesel engine to after-treatment system degree of dependence more and more higher, post processing
Device complexity and use cost also substantially increase.By using Fuel Petroleum equivalent premixed combustion instead on the basis of original diesel engine
Minimum discharge requirement only can be met by triple-effect catalytic unit, so that after-treatment system is greatly simplified, it is overall to reduce engine
Using and calibration cost；On the other hand, Strength of Diesel Engine Blocks is higher, and higher explosion pressure can be born compared to conventional gasoline machine,
Therefore after using Fuel Petroleum instead, higher engine thermal efficiency and power per liter can be still realized, meets commercial car demand.It is however, existing
There is diesel engine to use flat cylinder cap, spiral inlet duct and toroidal combustion chamber, its main function is for increase diesel fuel-air mixing more
Degree and mixing rate, thus high turbulence intensity requirement in the cylinder needed for Fuel Petroleum combustion process can not be met, needed for this
Original diesel engine air and combustion system are further improved.
Utility model content
The utility model purpose is that providing one kind for the above situation is applied to change on the basis of original engine block
With the combustion chamber of spark ignition type Fuel Petroleum premixed combustion, Fuel Petroleum is improved by piston-top surface structure design to greatest extent and burnt
Turbulence intensity in process middle cylinder, so as to ensure that engine still has preferable dynamic property and economy after Fuel Petroleum is used instead,
And then coordinate triple-effect catalytic unit, heavy-duty commercial vehicle engine performance and discharge are met under conditions of after-treatment system is greatly simplified
Requirement.
In order to solve the above-mentioned technical problem, the utility model provides a kind of uses Fuel Petroleum instead on the basis of diesel engine
Engine chamber, the space surrounded by cylinder cover bottom surface, cylinder wall surface and piston-top surface are formed, and the cylinder cover bottom surface is plane,
And two inlet valves and two exhaust valves are distributed with；The center of the cylinder cover bottom surface is provided with spark plug；The piston-top surface is set
There are a central slot and four jet flow grooves；The central slot is symmetrical on the basis of cylinder axis axis, the middle part
The insertion direction of groove is parallel with the two inlet valves bottom center line N；Four jet flow grooves and the central slot insertion side
To vertical and be distributed in central slot both sides in two row parallel and symmetricals on the basis of cylinder axis axis.
Further, in the utility model, the central slot is justified by both sides inclined-plane, bottom arc surface and inclined-plane and bottom
The arc surface composition excessively connected between cambered surface；The A/F L1 of the central slot be cylinder bore D 50-60%, institute
The depth H for stating central slot is cylinder bore D 11-14%, and the angle α of the inclined-plane and cylinder cover bottom surface is 45-60 °.
The cross section of the jet flow groove is in arc-shaped, and the radius R3 of circular arc is cylinder bore D 3.5-4.5%, and two row are flat
The interval L2 of the central axis of capable jet flow groove is cylinder bore D 25-35%.
Compared with prior art, the beneficial effects of the utility model are：
By the central slot for being arranged on piston-top surface so that air-flow is transported at suction stroke initial stage and compression travel latter stage
Dynamic guiding function can increase longitudinal Tumble intensity in cylinder, enter one on the basis of being vortexed so as to the large scale formed in original air intake duct
Step forms inclined-axis swirl, and near by making turbulence intensity in its broken increase cylinder；On the other hand, jet flow groove
The jet for pointing to central slot will be produced in the case where squeezing stream effect, it is collided with inclined-axis swirl in groove, further increase
Turbulence intensity in cylinder.Two kinds of factor collective effects will significantly improve combustion process Flame Propagation speed, reduce pinking tendency, carry
Maximum outbreak pressure in high cylinder so that engine can still realize the of a relatively high thermal efficiency and power per liter after using Fuel Petroleum instead.
In addition the chamber structure is simple, easy to process, smaller to former diesel engine cylinder cover structural modification.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model combustion chamber；
Fig. 2 is the side sectional view of combustion chamber shown in Fig. 1；
Fig. 3 is valve distribution schematic diagram in the utility model；
Fig. 4 is the top view of piston-top surface shown in Fig. 1.
Embodiment
It is new to this practicality with preferred embodiment below in conjunction with the accompanying drawings for functional structure of the present utility model is expanded on further
Type elaborates, it is to be understood that the scope of protection of the utility model is not limited by embodiment.
As depicted in figs. 1 and 2, the utility model proposes a kind of engine for using Fuel Petroleum instead on the basis of diesel engine
Combustion chamber, the space surrounded by cylinder cover bottom surface 2, cylinder wall surface 4 and piston-top surface 3 are formed.The cylinder cover bottom surface 2 is plane, and
Two inlet valves 8 and two exhaust valves 9 are distributed with, as shown in Figure 3；Two inlet valves 8 and two exhaust valves 9 are symmetrically distributed in straight line P two
Side, its cathetus P pass through cylinder axis axis and parallel with the central axis M of piston pin hole 7；The center of the cylinder cover bottom surface 2
Position is provided with spark plug 1；The piston-top surface 3 is provided with a central slot 6 and four jet flow grooves 5；The central slot 6 with
It is symmetrical on the basis of cylinder axis axis, the insertion direction of the central slot 6 and the bottom center's line of two inlet valve 8
N is parallel.Four jet flow grooves 5 are vertical with the central slot 6 insertion direction and parallel in two row on the basis of cylinder axis axis
And the both sides of central slot 6 are symmetrically distributed in, as shown in Figure 4.
As shown in figure 1, the central slot 6 is by mistake between both sides inclined-plane, bottom arc surface and inclined-plane and bottom arc surface
The arc surface composition of degree connection；The A/F L1 of the central slot 6 be cylinder bore D 50-60%, the central slot
6 depth H is cylinder bore D 11-14%, and the angle α of the inclined-plane and cylinder cover bottom surface 2 is 45-60 °.
As shown in Fig. 2 the cross section of the jet flow groove 5 is in arc-shaped, the radius R3 of circular arc is cylinder bore D 3.5-
4.5%, the 25-35% that the two interval L2 for arranging the central axis of parallel jet flow groove 5 are cylinder bore D.
Embodiment：Engine cylinder diameter D is 113mm in the present embodiment, and engine compression ratio 12, cylinder cap is Four valve
Structure.The structure of piston-top surface 3 includes four parallel jet grooves 5 of central slot 6 and perpendicular UNICOM, central slot 6
A/F L1 is 62mm, and depth H 15mm, the inclined-plane of both sides and the angle α of cylinder cover bottom surface 2 are 55 °, bottom arc surface
Radius R1 is 110mm, and the radius R2 of the arc surface excessively connected is 20m.In the utility model, the central slot 6 is mainly used
In suction stroke initial stage and compression travel latter stage increase cylinder in longitudinal Tumble intensity, so as to by with original air intake duct caused by
Large scale vortex is combined and further forms inclined-axis swirl, and by making it in the broken increase combustion process of near
In cylinder in turbulence intensity.The cross section of jet flow groove 5 is semicircular arc, and its radius R3 is 4.5mm, and two arrange the jet of parallel arrangement
The central axis interval L2 of groove 5 (i.e. positioned at two jet flow grooves 5 of the homonymy of central slot 6) is 34mm.In the utility model, jet
Groove 5 be mainly used near by squeeze stream effect produce point to central slot jet, make its with groove tiltedly
Axial eddy collides, and further increases turbulence intensity in cylinder.Based on said structure, the combustion chamber can be burned in Fuel Petroleum
Effectively accelerate rate of flame propagation in journey, reduce pinking tendency, improve combustion process so that engine is used instead after Fuel Petroleum still
The of a relatively high thermal efficiency and power per liter can be achieved, and then coordinate triple-effect catalytic unit, in the greatly simplified condition of after-treatment system
It is lower to meet commercial car dynamic property, economy and the requirement of discharge.
Although the utility model is described above in conjunction with figure, the utility model is not limited to above-mentioned tool
Body embodiment, above-mentioned embodiment is only schematical, rather than restricted, the ordinary skill people of this area
Member, in the case where not departing from the utility model aims, can also make many variations under enlightenment of the present utility model, these
Belong within protection of the present utility model.
Claims (3)
- A kind of 1. engine chamber for using Fuel Petroleum instead on the basis of diesel engine, by cylinder cover bottom surface (2), cylinder wall surface (4) And the space that piston-top surface (3) surrounds is formed, it is characterised in that the cylinder cover bottom surface is plane, and two inlet valves (8) are distributed with With two exhaust valves (9)；The center of the cylinder cover bottom surface (2) is provided with spark plug (1)；The piston-top surface (3) is provided with one Individual central slot (6) and four jet flow grooves (5)；The central slot (6) is symmetrical on the basis of cylinder axis axis, described The insertion direction of central slot (6) is parallel with described two inlet valves (8) bottom center line N；Four jet flow grooves (5) with it is described Central slot (6) insertion direction is vertical, and is distributed in central slot in two row parallel and symmetricals on the basis of cylinder axis axis (6) both sides.
- 2. use the engine chamber of Fuel Petroleum instead on the basis of diesel engine according to claim 1, it is characterised in that institute Central slot (6) is stated to be made up of the arc surface excessively connected between both sides inclined-plane, bottom arc surface and inclined-plane and bottom arc surface； The A/F L1 of the central slot (6) is cylinder bore D 50-60%, and the depth H of the central slot (6) is cylinder The angle α of diameter D 11-14%, the inclined-plane and cylinder cover bottom surface (2) is 45-60 °.
- 3. use the engine chamber of Fuel Petroleum instead on the basis of diesel engine according to claim 1, it is characterised in that institute The cross section for stating jet flow groove (5) is in arc-shaped, and the radius R3 of circular arc is cylinder bore D 3.5-4.5%, and two arrange parallel jet The interval L2 of the central axis of groove (5) is cylinder bore D 25-35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940189.1U CN207212485U (en) | 2017-07-31 | 2017-07-31 | A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940189.1U CN207212485U (en) | 2017-07-31 | 2017-07-31 | A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212485U true CN207212485U (en) | 2018-04-10 |
Family
ID=61814758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720940189.1U Active CN207212485U (en) | 2017-07-31 | 2017-07-31 | A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212485U (en) |
-
2017
- 2017-07-31 CN CN201720940189.1U patent/CN207212485U/en active Active
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