CN208502898U - A kind of gasoline compression ignition engine - Google Patents
A kind of gasoline compression ignition engine Download PDFInfo
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- CN208502898U CN208502898U CN201821144138.9U CN201821144138U CN208502898U CN 208502898 U CN208502898 U CN 208502898U CN 201821144138 U CN201821144138 U CN 201821144138U CN 208502898 U CN208502898 U CN 208502898U
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Abstract
The utility model relates to a kind of gasoline compression ignition engines, including main body cylinder and cylinder head, cylinder head is equipped with inlet duct and exhaust apparatus, the piston of connection crankshaft connecting rod system is cased in main body cylinder, cylinder head is additionally provided with the second cylinder being interconnected with main body cylinder interior, second piston, second connecting rod, camshaft are equipped in second cylinder, camshaft is connect by linkage with crankshaft, cam axle is driven when crank rotation, cam on camshaft pushes second connecting rod and moves downward, and reset spring is equipped between second connecting rod and the second cylinder.The utility model pushes up the piston in main body cylinder in crankshaft, when fastly close to top dead centre, second piston in second cylinder is quickly pushed by the linkage being connected on crankshaft, high-temp waste gas is arranged at the second cylinder top at this time, in addition spraying into gasoline appropriate, combustion chamber top is first compression-ignited, and to lower burning after being compression-ignited above, realizes stable orderly burning.
Description
Technical field
The utility model relates to internal combustion engine technologies field, more particularly, to be a kind of gasoline compression ignition engine.
Background technique
Compression ignition engine is higher than spark-ignition engine hot working efficiency by 30%, no matter from energy saving, or reduce fuel
It is said in cost angle, the popularization of compression ignition engine is all of great significance.In recent years, it is with " homogeneity compression-ignition, low-temperature burning "
The research of the combustion in IC engine theory and combustion technology of new generation of representative has greatly pushed the development of combustion in IC engine technology.Its
Middle homogeneous-charge compression-ignition (HCCI), i.e., occur involuntary ignition when homogeneous charge is compressed by pistons near top dead center.Because of it
Matter mixing, low-temperature burning and Fast exothermic, so that PM, NOx emission and oil consumption are all low.But there are ignition timing difficulty controls for HCCI technology
System, combustion instability, the narrow challenge of range of operation.The difficulty that compression ignition engine faces at present: first is that compression-ignited igniting is by vapour
Oil turbine compression ratio is promoted from 4~6 to 14:1 or more, engine cold-start difficulty；Engine with two works often because of load, temperature
Degree and quality of fuel etc. influence, and ignition timing is caused to shift to an earlier date, and combustion process is not easy to control, it is easy to phenomenon of detonation occurs.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of gasoline compression ignition engines.
To achieve the above object, the technical solution of the utility model is:
A kind of gasoline compression ignition engine, the cylinder head including main body cylinder and main body cylinder top, cylinder head are equipped with
Inlet duct and exhaust apparatus are cased with piston in main body cylinder, and piston is equipped with plug pin, and plug pin and a connecting rod one end are hinged, connecting rod
The hinged crankshaft of the other end, cylinder head are additionally provided with the second cylinder being interconnected with main body cylinder interior, are equipped in the second cylinder
Second piston connects a second connecting rod in second piston, is equipped with camshaft above second connecting rod, camshaft by linkage with
Crankshaft connection, when crank rotation, drive cam axle, and the cam on camshaft pushes second connecting rod and moves downward, second connecting rod
Reset spring is equipped between the second cylinder.
Preferably, the linkage includes belt, first pulley and the second belt wheel, and belt sleeve is in first pulley and second
On the outer ring of belt wheel, the axis of first pulley is crankshaft, and the axis of the second belt wheel is equipped with the first eccentric gear, the first eccentric gear with
The second eccentric gear engagement that camshaft is equipped with.
Preferably, atomizer and spark plug are additionally provided in the second piston.
Preferably, the second connecting rod is T-bar, and T-bar lower end is connect with second piston, and T-bar left end is equipped with limit
Structure, position limiting structure are adjustable the upper and lower position of T-bar left end；Cam is resisted below the slave cam of T-bar right end, T-bar is right
Reset spring is equipped between the downside at end and the second cylinder.
Preferably, the inlet duct is the mixing jetting type structure of intake port injection.
Preferably, the cam is irregular Elliptic Cylinder, with two different arcwall faces of radius of curvature.
Preferably, the cylinder head is equipped with electronics inlet duct.
By using above-mentioned technical solution, the beneficial effects of the utility model are: the utility model is on main body cylinder
Portion increases the second cylinder of built-in piston compression set, is squeezed by the piston compression device the gas in the second cylinder
Realize: 1, variable compression ratio adjusts the operation up and down of second piston in the second cylinder by the second connecting rod in the second cylinder
Section controls main body cylinder piston in-cylinder pressure size in top dead centre, can trigger compression ignition according to different duty requirements, make
Obtaining compression ignition can exist in wider range of revolving speed section.2, ignition timing is controlled, pinking is prevented, when main body cylinder piston is run
When to top dead centre, in-cylinder pressure is further increased, the gaseous mixture for failing to light is realized compression ignition.3, gas mixing is pushed, is improved
Gas in second cylinder is pressed into main body cylinder by the thermal efficiency, is promoted the indoor air-fuel mixture of burning, is uniformly dispersed, saves combustion
Oil.4, when starting, when the operation of main body cylinder piston is near top dead centre, the second cylinder passes through in-cylinder direct-jet, plug ignition, by point
The part of combustion is depressed into downwards main body cylinder, realizes orderly burning from top to bottom, while cold start-up is tired when also solving underload
Difficult problem.5, the cycling and reutilization of exhaust gas, in instroke, undischarged remainder of exhaust gas is sucked the second cylinder by second piston
It is interior, heat power is provided for the leading compression ignition of the second cylinder, solves the problems, such as that compression ignition is difficult when engine low load.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is second structural representation of air cylinder of the utility model；
Fig. 3 is the linkage schematic diagram of the utility model；
Fig. 4 is the linkage main view of the utility model；
Fig. 5 is the linkage side view of the utility model；
Fig. 6 is the air cylinder head structure schematic diagram of the utility model.
Main appended drawing reference explanation: (1 main body cylinder, 2 cylinder head, 3 air inlets, 4 intake valves, 5 admission lines, the spray of 6 fuel
Mouth, 7 exhaust outlets, 8 exhaust valves, 9 exhaust pipes, 10 pistons, 11 connecting rods, 12 crankshafts, 13 second cylinders, 14 second pistons, 15
Two connecting rods, 16 camshafts, 17 cams, 18 reset springs, 19 atomizers, 20 spark plugs, 21 belts, 22 first pulleys, 23 second
Belt wheel, 24 first eccentric gears, 25 second eccentric gears, 26 electronics air inlets, 151 fixed links, 152 sliding blocks, 153 apertures, 154
Limit hole, 155 vertical bars, 231 one-stage gears, 232, a gear, 233, b gear, admission cam shaft 41, exhaust cam shaft 81, air inlet
The cam of camshaft 411, exhaust cam axis cam 811).
Specific embodiment
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in figs 1 to 6, the utility model, the cylinder head 2 including 1 top of main body cylinder 1 and main body cylinder, cylinder head
2 are equipped with inlet duct and exhaust apparatus, and inlet duct conveys air inlet, including air for the combustion chamber into main body cylinder 1
With at least one of air and the mixture of fuel, structure include air inlet 3 in cylinder head 2 and for opening and closing
The intake valve 4 of the air inlet, air inlet 3 connect admission line 5, and settable fuel nozzle 6 in admission line 5 constitutes air inlet
The mixing jetting type structure of road injection；Exhaust apparatus is for exporting exhaust gas, structure from the combustion chamber in the main body cylinder 1
Exhaust valve 8 including exhaust outlet 7 and for controlling the opening and closing of exhaust outlet 7, exhaust outlet 7 connect exhaust pipe 9；Main body cylinder
Piston 10 is cased in 1, piston 10 is equipped with plug pin, and plug pin and 11 one end of a connecting rod are hinged, the hinged crankshaft 12 of 11 other end of connecting rod,
Piston 10 is moved reciprocatingly by a top dead center position, band dynamic crankshaft 12 rotate, cylinder head 2 be additionally provided with inside main body cylinder 1
The second interconnected cylinder 13 is equipped with second piston 14 in second cylinder 13, connects a second connecting rod 15 in second piston 14,
Camshaft 16 is equipped with above second connecting rod 15, camshaft 16 is connect by linkage with crankshaft 12, and crankshaft 12 drives when rotating
Camshaft 16 rotates, and when camshaft 16 rotates, the cam 17 on camshaft 16 can push second connecting rod 15 and move downward, and second connects
Reset spring 18 is equipped between bar 15 and the second cylinder 13.
Be additionally provided with atomizer 19 and spark plug 20 in the second piston 14, when starting, when the operation of cylinder piston 10 near
Top dead centre, atomizer 19 carries out in-cylinder direct-jet in 13 second piston 14 of the second cylinder, and spark plug 20 is lighted a fire, and second piston 14 is downward
Movement, is depressed into downwards main body cylinder 1 for the part lighted, realizes orderly burning from top to bottom.
The second connecting rod 15 is T-bar, and T-bar lower end is connect with second piston 14, and T-bar left end is equipped with limit knot
Structure, position limiting structure are adjustable the upper and lower position of T-bar left end；Cam 17, T-bar are resisted below the slave cam 17 of T-bar right end
Right end is equipped with vertical bar 155, and vertical bar 155 is equipped with through-hole, and T-bar right end passes through through-hole, 155 lower end of vertical bar and the second cylinder 13 it
Between be equipped with reset spring 18；The position limiting structure includes fixed link 151, sliding block 152, and sliding block 152 and T-bar left end are hinged, Gu
Fixed pole 151 is fixed on cylinder head 2 or engine casing, and fixed link 151 is equipped with aperture 153, and sliding block 152 is equipped with and aperture
The limit hole 154 of 153 cooperations, can fix position of the sliding block 152 in fixed link 151 by bolt and nut.
The cam 17 is irregular Elliptic Cylinder, with two different arcwall faces of radius of curvature, specifically last week
Face is arcwall face, and lower circumferential surface is flat face, in compression travel, when the piston 10 in main body cylinder 1 soon arrives at top dead centre, because
The cam 17 of up and down action and the contact position of second connecting rod 15 for controlling second piston 14 are just flat face, so second piston
14 can push rapidly, reduce kindling resistance；When expansion space stroke is close to when ending, exhaust outlet 7 is opened, due to controlling second at this time
The cam 17 of the up and down action of piston 14 and the contact position of second connecting rod 15 are just arcwall face, second piston under curved line
14, which move upwards speed, slows down, and can bring portion into the second cylinder 13, using the high temperatures of exhaust gas, mentions for next compression ignition
For power.
The linkage includes including belt 21, first pulley 22 and the second belt wheel 23, and 21 sets of belt in first pulley
22 and second belt wheel 23 outer ring on, 22 axis of first pulley is crankshaft 12, and 23 axis of the second belt wheel is equipped with the first eccentric gear 24, the
One eccentric gear 24 is engaged with the second eccentric gear 25 that camshaft 16 is equipped with, and belt gear passes the rotation of crankshaft 12
It moves to camshaft 16, and speed change is realized by the first eccentric gear 24 and the second eccentric gear 25.
One-stage gear 231, one-stage gear 231 and a gear 232, b gear 233 are additionally provided on the axis of second belt wheel 23
Engagement, a gear 232 are located on the admission cam shaft 41 that control intake valve 4 is opened and closed, and b gear 233 is located at control exhaust valve 8 and is opened and closed
Exhaust cam shaft 81 on, crankshaft 12 rotation act belt gear, belt gear drive one-stage gear 231, a tooth
Wheel 232, b gear 233 rotate, so that the rotation of admission cam shaft 41, exhaust cam shaft 81 is controlled, in admission cam axis cam
411, under the cooperation of exhaust cam axis cam 811, the opening and closing of intake valve 4, exhaust valve 8 is realized.
The cylinder head 2 is equipped with electronics inlet duct, including an electronics air inlet 26 and automatically controlled gas handling system, the present invention
Preferred embodiment be that two air inlets, an electronics air inlet and two exhaust outlets are set in cylinder head 2, wherein using electricity
The intake method of gas handling system control is controlled, it can be with more convenient flexible air capacity adjusted in engine main body cylinder 1, with full
The best oxygen demand of sufficient engine atomized fuel burning, improves the thermal efficiency of engine.
The utility model pushes up the piston 10 in main body cylinder 1 in crankshaft 12, fastly close to top dead centre when, pass through
The high-pressure concentrator of second cylinder 13 sprays into gasoline appropriate, and at this moment the second piston in the second cylinder 13 is by being connected to song
Linkage on axis 12 quickly pushes, because high-temp waste gas when cylinder is vented every time is difficult to be completely exhausted out, institute
Remaining exhaust gas can be drawn into the top of the second cylinder 13 with the second piston when exhaust is near completion, moved upwards, this
When 13 top of the second cylinder have high-temp waste gas, in addition gasoline appropriate is sprayed into, because the super thin oil gas for having air intake duct to suck is mixed
Zoarium, combustion chamber top are first compression-ignited, to lower burning after being compression-ignited above, other parts also with cylinder pressure and temperature raising and
By gradually compression ignition, stable orderly burning is realized.
Above-described, the only preferred embodiment of the utility model cannot limit the range of this practical implementation, all
It is equivalent change made according to the patent scope of the utility model and decoration, should still belong to the range covered in the utility model
It is interior.
Claims (7)
1. a kind of gasoline compression ignition engine, the cylinder head including main body cylinder and main body cylinder top, cylinder head be equipped with into
Device of air and exhaust apparatus are cased with piston in main body cylinder, and piston is equipped with plug pin, and plug pin and a connecting rod one end are hinged, and connecting rod is another
The hinged crankshaft in one end, which is characterized in that cylinder head is additionally provided with the second cylinder being interconnected with main body cylinder interior, the second gas
It is equipped with second piston in cylinder, a second connecting rod is connected in second piston, is equipped with camshaft above second connecting rod, camshaft passes through connection
Dynamic device is connect with crankshaft, and when crank rotation drives cam axle, and the cam pushing second connecting rod on camshaft moves downward,
Reset spring is equipped between second connecting rod and the second cylinder.
2. gasoline compression ignition engine according to claim 1, it is characterised in that: the linkage includes belt,
One belt wheel and the second belt wheel, for belt sleeve on the outer ring of first pulley and the second belt wheel, the axis of first pulley is crankshaft, the second band
The axis of wheel is equipped with the first eccentric gear, and the first eccentric gear is engaged with the second eccentric gear that camshaft is equipped with.
3. gasoline compression ignition engine according to claim 1, it is characterised in that: be additionally provided with oil spout in the second piston
Mouth and spark plug.
4. gasoline compression ignition engine according to claim 1, it is characterised in that: the second connecting rod is T-bar, T shape
Bar lower end is connect with second piston, and T-bar left end is equipped with position limiting structure, and position limiting structure is adjustable the upper and lower position of T-bar left end；
Cam is resisted below the slave cam of T-bar right end, reset spring is equipped between the downside of T-bar right end and the second cylinder.
5. gasoline compression ignition engine according to claim 1, it is characterised in that: the inlet duct is intake port injection
Mixing jetting type structure.
6. gasoline compression ignition engine according to claim 1, it is characterised in that: the cam is irregular cylindroid
Body, with two different arcwall faces of radius of curvature.
7. gasoline compression ignition engine according to claim 1, it is characterised in that: the cylinder head is filled equipped with electronics air inlet
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821144138.9U CN208502898U (en) | 2018-07-18 | 2018-07-18 | A kind of gasoline compression ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821144138.9U CN208502898U (en) | 2018-07-18 | 2018-07-18 | A kind of gasoline compression ignition engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502898U true CN208502898U (en) | 2019-02-15 |
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ID=65289793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821144138.9U Active CN208502898U (en) | 2018-07-18 | 2018-07-18 | A kind of gasoline compression ignition engine |
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| Country | Link |
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| CN (1) | CN208502898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610340A (en) * | 2020-12-08 | 2021-04-06 | 东风汽车集团有限公司 | Engine movement structure with variable compression ratio |
-
2018
- 2018-07-18 CN CN201821144138.9U patent/CN208502898U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610340A (en) * | 2020-12-08 | 2021-04-06 | 东风汽车集团有限公司 | Engine movement structure with variable compression ratio |
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