CN201050389Y - Gasoline engine - Google Patents
Gasoline engine Download PDFInfo
- Publication number
- CN201050389Y CN201050389Y CNU2007201496762U CN200720149676U CN201050389Y CN 201050389 Y CN201050389 Y CN 201050389Y CN U2007201496762 U CNU2007201496762 U CN U2007201496762U CN 200720149676 U CN200720149676 U CN 200720149676U CN 201050389 Y CN201050389 Y CN 201050389Y
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- petrol engine
- cylinder
- air inlet
- exhaust
- utility
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Abstract
The utility model discloses a gasoline engine, which comprises a cylinder body, a cylinder cover, a crank piston linkage mechanism, a valve mechanism, an air inlet and exhaust system, a cooling system and a lubricating system. The utility model is characterized in that the cylinder body is provided with a jackshaft on which two stages of timing wheels are arranged. One stage of timing wheel is connected with a crankshaft of the gasoline engine; the other stage of the timing wheel is connected respectively with an air inlet camshaft sprocket and an air exhaust camshaft sprocket. The utility model has the advantages that: 1. double overhead camshaft and single cylinder 4-air valve structure is adopted, so that the charging efficiency can be improved maximally, and the movement inertia of the air valve train can be reduced, which is helpful to improve the speed of the engine; 2. the compression ratio is improved, so that the power of the engine is improved; 3. the air inlet variable timing mechanism is adopted, so that the low speed torque can be increased, the economy of the fuel oil and the discharge are improved; 4. the two stages of single row chain transmission system is adopted, so that the transmission precision and efficiency are improved and the noise of the chain transmission is reduced.
Description
Technical field
The utility model relates to a kind of petrol engine, relates in particular to the petrol engine of a kind of 4 cylinders, 4 valves, air inlet belt variable valve timing mechanism.
Background technique
At present, there is the problem that structure is backward, power is low, oil consumption is high, difficulty is upgraded in discharging in petrol engine 491 petrol engine of domestic Light-duty Vehicle consumption maximum, and the incompatibility car load is to the demand of power.On the structure, what 491 petrol engine adopted is underneath camshaft, single cylinder 2 air valve structures, and charging efficiency is low, and valve train inertia is big, is unfavorable for the lifting of power and rotating speed, the raising of compression ratio.Intake and exhaust cause intake temperature too high in the same side, influence air inflow.Former machine water inlet and outlet is arranged as the water inlet of cylinder body front end, the water outlet of cylinder cap front end, U font cooling circuit, and before and after the warm braw pipeline layout is arranged all, rear end warm braw water outlet meeting influences the cooling effect of motor.
Summary of the invention
Technical problem to be solved in the utility model is, providing a kind of is on existing 491 petrol engine bases, keep improving engine power, reduce oil consumption, improving emission performance, and adapt to the replacement petrol engine of the new consumption tax under the minimum situation of changing of original production line.
To achieve these goals, the utility model provides a kind of petrol engine, comprise cylinder block, cylinder head, crank piston crank mechanism, distribution device, air inlet system and exhaust system, cooling system, lubrication system, its characteristics are, on the described cylinder block jack shaft is installed, described jack shaft is provided with the positive hour wheel of two-stage, and the positive hour wheel of one-level connects gasoline engine crank, and another level connects admission cam shaft sprocket wheel and exhaust cam shaft sprocket wheel respectively.
Above-mentioned cylinder head adopts every cylinder 4 valves, ridge-roof type firing chamber, and described calcining compartment middle position is provided with spark plug mounting hole.
Above-mentioned distribution device adopts Dual Over Head Camshaft.
The piston of above-mentioned crank piston crank mechanism adopts the valve pit structure, reserves exhaust timing variable spaces.
The air inlet-outlet pipe of above-mentioned air inlet system and exhaust system is distributed in described cylinder cap both sides, and oil sprayer is arranged on the described cylinder cap suction tude, and the inlet and exhaust valve angle is pressed center line and is symmetrically distributed.
Above-mentioned air inlet-outlet pipe adopts medium rolling flow type.
Above-mentioned inlet and exhaust valve angle is pressed center line 18 degree and is symmetrically distributed.
The water jacket of above-mentioned cooling system is the water outlet of the left front end water inlet of cylinder body cylinder cap right front ends, and described water intake is provided with thermostat.
Above-mentioned petrol engine, its characteristics are that the warm braw water outlet is arranged on described petrol engine front end.
Effect of the present utility model is, the advantage of the utility model petrol engine: 1, adopt Dual Over Head Camshaft single cylinder 4 air valve structures, can improve charging efficiency to greatest extent, reduce the valve train movement inertia, help improving engine speed; 2, improve compression ratio, can improve engine power; 3, adopt air inlet variable timing mechanism, can improve low speed torque, improve fuel economy and improve discharging; 4, adopt the single chain drive system of twin-stage, improve transmitting accuracy and efficient, reduce chain noise.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is the horizontal cross-sectional schematic of the utility model petrol engine;
Fig. 2 is the utility model two-stage timing wheel chain drive schematic representation;
Fig. 3 is the utility model cylinder head air inlet-outlet pipe sectional view;
Fig. 4 is the utility model cooling water turnover schematic representation.
Wherein, reference character
1 cylinder cap
2,3 camshafts
4 cylinder cap cover caps
5,11 inlet and exhaust valves
6 firing chambers
7 outlet pipes
8 jack shafts
9 suction tude lower bodies
10 oil sprayers
12 suction tude upper bodies
The positive hour wheel of 13 admission cam shafts
The positive hour wheel of 14 exhaust cam shafts
15,19 Idle wheels
The positive hour wheel of 16 bent axles
The positive hour wheel of 17 jack shafts
Little positive hour wheel on 18 jack shafts
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and working principle are done concrete description:
See also the horizontal cross-sectional schematic of Fig. 1 the utility model petrol engine, Fig. 2 the utility model two-stage timing wheel chain drive schematic representation, Fig. 3 the utility model cylinder head air inlet-outlet pipe sectional view, Fig. 4 is the utility model cooling water turnover schematic representation.
The utility model is keeping under the constant situation of existing 491 cylinder of petrol engine structure, cylinder cap, valve train, distribution device, air inlet system and exhaust system, cooling system, lubrication system etc. have been carried out brand-new design, and major character is: cylinder head adopts every cylinder 4 valves, ridge-roof type firing chamber; Distribution device adopts Dual Over Head Camshaft; The air inlet-outlet pipe of air inlet system and exhaust system is distributed in the cylinder cap both sides, and oil sprayer is arranged on the cylinder cap suction tude, and the inlet and exhaust valve angle is pressed center line and is symmetrically distributed; The water jacket of cooling system is the water outlet of the left front end water inlet of cylinder body cylinder cap right front ends; Jack shaft is installed on the cylinder block, and described jack shaft is provided with the positive hour wheel of two-stage, and the positive hour wheel of one-level connects gasoline engine crank, and another level connects admission cam shaft sprocket wheel and exhaust cam shaft sprocket wheel respectively.
Shown in Fig. 1-4, the utility model petrol engine concrete structure is as follows: cylinder head is designed to cylinder cap 1 and cover cap 4 constitutes by connecting bolt and sealing gasket assembling, and the mounting hole of Dual Over Head Camshaft 2,3 is arranged on the last plane of cylinder cap 1, fixes with camshaft cover; Intake duct divides upper body 12 and lower body 9 two-part, and lower body 9 is arranged on the left side of cylinder cap 1, and upper body 12 designs are above cover cap 4; Firing chamber 6 is arranged on the cylinder cap 1, is designed to four valve ridge-roof type, and intake duct 20, air outlet flue 21 are pressed center line 18 degree with the cylinder centerline angle and be symmetrically distributed; Oil sprayer 10 is installed on the cylinder cap intake duct 20, and spark plug mounting hole is arranged on firing chamber central authorities, and design of Cooling System is 22 water inlets of cylinder body front end, 23 water outlets of cylinder cap front end, and thermostat is contained in water intake.Jack shaft 8 is installed on the cylinder block, single little positive hour wheel 18 of positive hour wheel 17 front ends assembling on the jack shaft 8, the positive hour wheel 16 of bent axle links to each other with positive hour wheel 17 on the jack shaft 8 by transmission connection piece, little positive hour wheel 18 links to each other with exhaust sprocket 14 on the exhaust cam shaft by the VVT13 on chain and the admission cam shaft, VVT13 and exhaust sprocket 14 drive 2,3 rotations of inlet and outlet camshaft, drive inlet and exhaust valve 11,5 motions, realize air inlet, exhaust.The valve timing transmission is provided with stretcher 15,19, because gas handling system has adopted variable timing mechanism, has improved the low speed segment moment of torsion, has increased high regime power.
In addition, the utility model also improves lubrication system pump oil ability and improves, and the oil sump engine oil capacity increases, and the warm air system inlet and outlet pipe improves and optimizates, and the warm braw water outlet is arranged in motor head.Piston head adopts the valve pit structure, reserves exhaust timing variable spaces.
Advantage of the present utility model: 1, adopt Dual Over Head Camshaft single cylinder 4 air valve structures, can improve charging efficiency to greatest extent, reduce the valve train movement inertia, help improving engine speed; 2, improve compression ratio, can improve engine power; 3, adopt air inlet variable timing mechanism, can improve low speed torque, improve fuel economy and improve discharging; 4, adopt the single chain drive system of twin-stage, improve transmitting accuracy and efficient, reduce chain noise.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (9)
1. petrol engine, comprise cylinder block, cylinder head, crank piston crank mechanism, distribution device, air inlet system and exhaust system, cooling system, lubrication system, it is characterized in that, on the described cylinder block jack shaft is installed, described jack shaft is provided with the positive hour wheel of two-stage, the positive hour wheel of one-level connects gasoline engine crank, and another level connects admission cam shaft sprocket wheel and exhaust cam shaft sprocket wheel respectively.
2. petrol engine according to claim 1 is characterized in that, described cylinder head adopts every cylinder 4 valves, ridge-roof type firing chamber, and described calcining compartment middle position is provided with spark plug mounting hole.
3. petrol engine according to claim 1 and 2 is characterized in that, described distribution device adopts Dual Over Head Camshaft.
4. petrol engine according to claim 1 and 2 is characterized in that, the piston of described crank piston crank mechanism adopts the valve pit structure, reserves exhaust timing variable spaces.
5. petrol engine according to claim 1 and 2 is characterized in that, the air inlet-outlet pipe of described air inlet system and exhaust system is distributed in described cylinder cap both sides, and oil sprayer is arranged on the described cylinder cap suction tude, and the inlet and exhaust valve angle is pressed center line and is symmetrically distributed.
6. petrol engine according to claim 5 is characterized in that described air inlet-outlet pipe adopts medium rolling flow type.
7. petrol engine according to claim 5 is characterized in that, described inlet and exhaust valve angle is pressed center line 18 degree and is symmetrically distributed.
8. petrol engine according to claim 1 is characterized in that, the water jacket of described cooling system is the water outlet of the left front end water inlet of cylinder body cylinder cap right front ends, and described water intake is provided with thermostat.
9. according to claim 1,2,6,7 or 8 described petrol engine, it is characterized in that the warm braw water outlet is arranged on described petrol engine front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201496762U CN201050389Y (en) | 2007-06-15 | 2007-06-15 | Gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201496762U CN201050389Y (en) | 2007-06-15 | 2007-06-15 | Gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050389Y true CN201050389Y (en) | 2008-04-23 |
Family
ID=39336875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201496762U Expired - Fee Related CN201050389Y (en) | 2007-06-15 | 2007-06-15 | Gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050389Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763487A (en) * | 2015-03-21 | 2015-07-08 | 山西新天地发动机制造有限公司 | Gasoline engine |
| CN106437923A (en) * | 2016-09-27 | 2017-02-22 | 上汽通用五菱汽车股份有限公司 | Turbocharging gasoline engine |
-
2007
- 2007-06-15 CN CNU2007201496762U patent/CN201050389Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763487A (en) * | 2015-03-21 | 2015-07-08 | 山西新天地发动机制造有限公司 | Gasoline engine |
| CN106437923A (en) * | 2016-09-27 | 2017-02-22 | 上汽通用五菱汽车股份有限公司 | Turbocharging gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20150615 |
|
| EXPY | Termination of patent right or utility model |