CN202325847U - Gasoline engine - Google Patents
Gasoline engine Download PDFInfo
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- CN202325847U CN202325847U CN2011205076371U CN201120507637U CN202325847U CN 202325847 U CN202325847 U CN 202325847U CN 2011205076371 U CN2011205076371 U CN 2011205076371U CN 201120507637 U CN201120507637 U CN 201120507637U CN 202325847 U CN202325847 U CN 202325847U
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- cylinder
- petrol engine
- egr
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- valve
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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 utility model provides a gasoline engine. The gasoline engine is provided with a variable valve timing (VVT) system comprising a VVT assembly, an oil control valve (OCV) and the like, so that the dynamic property of the gasoline engine can be improved to a certain extent; the gasoline engine is also provided with an electronic throttle valve, and an exhaust gas recirculation (EGR) system comprising an EGR valve, an EGR internal path, an EGR external pipeline and the like, so that economy also can be improved to a certain extent; and therefore, the gasoline engine combines the dynamic property and the economy. Moreover, a plurality of parts are integrally molded on a timing housing, so that the total number of the parts can be decreased, assembly procedures can be reduced, difficulty in the casting of a cylinder body and a cylinder cover can be lowered, and the economy is further improved by integrated part designs. The length of the EGR external pipeline can further ensure the cooling of an exhaust gas, and an intake manifold can be allowed to adopt a light plastic material with a smooth inner wall, so that the dynamic property can be further improved.
Description
Technical field
The utility model relates to petrol engine, particularly is applicable to a kind of petrol engine of microbus (for example discharge capacity such as 1.0L, 1.2L) rear wheel drive.
Background technique
Microbus is a kind ofly to transport the vehicle with carrying in common being used to of the combination area of city and country.For meeting the market requirement, can there be low-cost requirement to microbus, thus, will inevitably cause the petrol engine of microbus to be difficult to take into account power character and Economy.
The model utility content
In view of this, the utility model provides a kind of petrol engine, can take into account power character and Economy.
A kind of petrol engine that the utility model provides comprises:
The petrol engine body is assembled and is formed with cylinder by cylinder body and cylinder cap;
Intake manifold is communicated with the intake valve of said cylinder;
Electronic throttle is communicated with said intake manifold;
Admission cam shaft is installed in said petrol engine body and controls the unlatching and the closure of said intake valve;
Gas exhaust manifold is communicated with the exhaust valve of said cylinder;
Exhaust cam shaft is installed in said petrol engine body and controls the unlatching and the closure of said exhaust valve;
The VVT assembly connects an end of said admission cam shaft in the outside of said petrol engine body;
Timing chain is realized chain-driven between said VVT assembly and said exhaust cam shaft;
Timing shell covers in the outside of said VVT assembly and said timing chain;
OCV is integrally formed in said timing shell and controls said VVT assembly through the said VVT oil circuit that is integrally formed in said timing shell;
The EGR valve is installed in by the cooling water channel of said petrol engine body;
The built-in path of EGR is arranged in the said cylinder cap and said gas exhaust manifold is communicated with said EGR valve;
The EGR external pipeline extends outside said petrol engine body and said EGR valve is communicated with said intake manifold.
Preferably, said cylinder is 4.
More preferably:
Centre distance between 4 said cylinders is that the cylinder diameter of 76mm, each said cylinder is 70～70.015mm.
Piston stroke in each said cylinder is that 80.8mm, piston compression height are 28.4～28.6mm.
The compression ratio of each said cylinder is 10.
Piston in each said cylinder is 25.74～26.54cm at the volume near the formed firing chamber of a side of said cylinder cap
3
The end face of said cylinder cap further be equipped with the cylinder head cover that covers said cylinder cap and said timing shell and and the end face of said cylinder cap between form the machine oil chamber; Each said cylinder the spark plug near said cylinder cap one side pass said machine oil chamber and with the spark coil conducting in the outside of being fixed in said cylinder head cover, and, the shared spark coil of the spark plug of per 2 said cylinders.
The outside socket one spark plug conduit of the spark plug of each said cylinder.
Each said spark plug conduit is sealed by oil seal washer near an end of said cylinder head cover.
Said admission cam shaft is a Dual Over Head Camshaft.
The intake advance angle of said intake valve is that-14 °～26 °, air inlet retardation angle are 26 °～66 °, and the exhaust advance angle of said exhaust valve is that 49 °, exhaust lag angle are 7 °.
Said timing chain is by a stretcher tensioning.
The length of said EGR external pipeline is 290～350mm.
Further comprise: oil pump is shaped in said timing shell and is communicated with said machine oil chamber; Water pump is shaped in said timing shell, and is communicated with said entry base.
As above visible, the petrol engine that the utility model provided is owing to have the VVT system that VVT assembly, OCV etc. constitute, thereby can make petrol engine improve power character to a certain extent; Owing to also have an electronic throttle, and the egr system that constitutes such as EGR valve, the built-in path of EGR, EGR external pipeline, thereby can also improve Economy to a certain extent.And; Timing shell is one-body molded to have a plurality of parts; Thereby can reduce the component sum, reduce assembly process and reduce the casting difficulty of cylinder body and cylinder cap, and then reduce the cost of petrol engine, i.e. further lifting Economy through integrated parts design; The length of EGR external pipeline can further be guaranteed the cooling of waste gas, can allow intake manifold to adopt the plastic material that weight more is lighter, inwall is more smooth, thereby can further improve intake efficiency, i.e. further lifting power character.
Further: the timing chain device auto-tensioning that is tensioned can make that timing chain is non-maintaining; Structures such as spark coil, spark plug conduit can improve convenience and the interior machine oil cell structure of simplification cylinder cap that component are arranged.
Description of drawings
Fig. 1 is the plan view of the petrol engine among the utility model embodiment;
Fig. 2 is the side view of the petrol engine among the utility model embodiment;
Fig. 3 is that as shown in Figure 2 A-A is to sectional view;
Fig. 4 is the plan view of the petrol engine among the utility model embodiment;
Fig. 5 is the schematic representation of the VVT system of the petrol engine among the utility model embodiment;
Fig. 6 is the schematic representation of the timing chain of the petrol engine among the utility model embodiment;
Fig. 7 is the schematic representation of the timing shell of the petrol engine among the utility model embodiment.
Embodiment
For the purpose, technological scheme and the advantage that make the utility model is clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to the utility model further explain.
Fig. 1 is the plan view of the petrol engine among the utility model embodiment.Fig. 2 is the side view of the petrol engine among the utility model embodiment.Fig. 3 is that as shown in Figure 2 A-A is to sectional view.Fig. 4 is the plan view of the petrol engine among the utility model embodiment.
As Fig. 1 to shown in Figure 4, especially referring to Fig. 3, the petrol engine among the utility model embodiment comprises petrol engine body 10.Petrol engine body 10 is assembled by cylinder body 11 and cylinder cap 12 and forms the inner cylinder 110 of petrol engine body 10.
Preferably, for petrol engine body 10, the utility model embodiment provides following optimal way:
Centre distance between 4 cylinders 110 is preferably 76mm;
The cylinder diameter of each cylinder 110 is preferably 70～70.015mm;
Piston stroke in each cylinder 110 is preferably 80.8mm;
Piston compression height is preferably 28.4～28.6mm;
The compression ratio of each cylinder 110 is preferably 10.
Piston in each cylinder 110 is preferably 25.74～26.54cm at the volume near the formed firing chamber of a side of cylinder cap 12
3
Cylinder barrel, piston etc. adopt stepless design concept, have reduced measurement and inventory cost that the related components classification brings.
And the bearing hole of cylinder body 11 bottoms is spliced by the bearing cap 112 that bearing support that is shaped in cylinder body 11 111 and powder metallurgy process.Like this, than a plurality of bearing caps of traditional integrally casting and utilize the mode of special device cutting to compare, reduced the machining cost.
Except above-mentioned petrol engine body 10; Petrol engine among the utility model embodiment also comprises gas handling system, vent systems, VVT (Variable Valve Timing; VVT) system, EGR (Exhaust Gas Recirculation; Exhaust gas recirculatioon) system, ignition system etc. are explained respectively below.
For gas handling system; Please referring in Fig. 1 to Fig. 4 again referring to Fig. 5 and Fig. 6, gas handling system comprises: the intake valve of cylinder 110, the intake manifold 21 that is communicated with intake valve, be installed in petrol engine body 10 and control IO Intake Valve Opens and closed admission cam shaft 22 and the electronic throttle 23 that is communicated with 21 connections with intake manifold.Wherein, Because the position of intake valve is existing technology with the mode of function and admission cam shaft 22 control intake valves, thereby in each view, does not mark out intake valve in order to simplify view and omit dependency structure that intake manifold 21 is communicated with intake valve and dependency structure that admission cam shaft 22 is controlled intake valves.
It is thus clear that; Because gas handling system has adopted can be by ECU (the Electronic Control Unit of car load; Electronic control unit) electronic throttle of being controlled 23; So that air inlet control is more accurate, for the introducing of implementing start and stop technology and ESP advanced technologies such as (Electronic Stability Program, body electronics stable systems) provides technical support.
Preferably, for gas handling system, the embodiment of the invention is selected the intake manifold 21 of plastic material for use, and with respect to the intake manifold of traditional cast aluminium, the weight of the intake manifold 21 of plastic material is lighter, air flue is more smooth, thereby also can improve intake efficiency further.And admission cam shaft 22 can be selected Dual Over Head Camshaft for use.
For vent systems; Please in referring to Fig. 1 and Fig. 2 and Fig. 3 again referring to Fig. 6, vent systems comprises: the exhaust valve of cylinder 110, the gas exhaust manifold 31 that is communicated with exhaust valve and be installed in petrol engine body 10 and control exhauxt valve opens and closed exhaust cam shaft 32.Wherein, Because the position of exhaust valve is existing technology with the mode of function and admission cam shaft 22 control intake valves, thereby in each view, does not mark out exhaust valve in order to simplify view and omit dependency structure that gas exhaust manifold 31 is communicated with exhaust valve and dependency structure that exhaust cam shaft 32 is controlled exhaust valves.
For the VVT system; Please referring in Fig. 1 to Fig. 4 again referring to Fig. 5 and Fig. 6, the VVT system comprises: connect in petrol engine body 10 outsides end of admission cam shaft 22 VVT assembly 41, the timing chain 42 of realizing chain-driven (VVT assembly 41 and exhaust cam shaft 32 have the mutual sprocket wheel that aligns) between VVT assembly 41 and the exhaust cam shaft 32, cover in VVT assembly 41 and timing chain 42 outsides timing shell 40, be integrally formed in the VVT oil circuit of timing shell 40 and be integrally formed in timing shell 40 and control the OCV (pressure control valve) 43 of VVT assembly 41 through the VVT oil circuit.Wherein because the principle of the position of VVT oil circuit and function and OCV 43 control VVT assemblies 41 is existing technology, thereby in order to simplify view not at VVT oil circuit shown in each view and be communicated with the dependency structure of OCV 43 and VVT assembly 41.
Thus it is clear that,, thereby can make petrol engine improve power character to a certain extent because the petrol engine among the utility model embodiment is equiped with the VVT system.
Preferably, for the VVT system, the embodiment of the invention provides following optimal way:
The intake advance angle of the intake valve of being controlled with the VVT system is that-14 °～26 °, the air inlet retardation angle of intake valve are that 26 °～66 °, the exhaust advance angle of exhaust valve are that 49 °, exhaust lag angle are 7 °; Like this, just can degrees of freedom be provided for the EFI coupling of petrol engine.For middle low cruise operating mode, the unlatching in advance of intake valve can reduce intake resistance and prevent the waste gas refluence and increase air inflow, thereby promotes the performance of petrol engine; For the high speed operation operating mode, intake valve is postponed opening and can be utilized air inlet inertia to increase air inflow, thereby promotes the performance of petrol engine.
Timing chain 42 is by a stretcher 44 tensionings, and specifically as shown in Figure 6, timing chain 42 closed loops are around the outside of VVT assembly 41, exhaust cam shaft 32 and an adjusting bent axle 45, in order to be implemented in the chain-driven between VVT assembly 41 and the exhaust cam shaft 32; In a side of exhaust cam shaft 32, there is a timing chain guide plate 46 to be supported in the outside of timing chain 42; And in a side of VVT assembly 41, half hydraulic structure and the stretcher 44 that is built-in with spring utilize a tension arms 47 to be supported in the outside of timing chain 42, thereby realize the tensioning to timing chain 42.Like this; Utilize the spring tracing ability and the oil pressure control of stretcher 44 can remedy timing chain 42 because the tension force that the wearing and tearing elongation causes is decayed; And; Because the tension effects of stretcher 44 only needs spring and to the control of oil pressure, thereby just need not artificial maintenance, thereby can reduce the maintenance cost in the using process.
In addition, as shown in Figure 7, oil pump 14 and the water pump 15 that is communicated with cooling water channel that petrol engine body 10 is had also can be shaped in timing shell 40.Like this; Because timing shell 40 is one-body molded a plurality of parts are arranged; Thereby can reduce the component sum, reduce assembly process and reduce the casting difficulty of cylinder body 11 and cylinder cap 12, and then reduce the cost of petrol engine, i.e. further lifting Economy through integrated parts design.
For egr system; Please referring to Fig. 1 to Fig. 4 the time, especially pay close attention to Fig. 1 and Fig. 4, egr system comprises: be installed in cooling water channel other (cylinder cap 12 is one-body molded have water outlet base thereby the cooling water channel described herein of cooling water channel other can be water outlet base place) EGR valve 51, utilize machining mode to be arranged in the cylinder cap 12 and the built-in path of EGR (all not shown in each view) that gas exhaust manifold 31 is communicated with the EGR valve and extension and EGR external pipeline 52 that EGR valve 51 is communicated with intake manifold 21 outside petrol engine body 10.Like this, can the waste gas in the gas exhaust manifold 31 be introduced into EGR valve 51, after waste gas receives the cooling at water outlet base place at EGR valve 51, be directed into intake manifold 21 by EGR external pipeline 52 again and mixes the suction cylinder with fresh air by the built-in path of EGR.
It is thus clear that, because the petrol engine among the utility model embodiment is equiped with egr system, thereby can improves the firing effect in the cylinder and improve the fuel economy of petrol engine, can also reduce the NOx discharging.Practical application is to utilize egr system to import waste gas in 30%～50% the operating mode scope in engine speed at 1200rpm to 4000rpm, load preferably.
In addition; If gas handling system adopts the intake manifold 21 of foregoing plastic material; Then EGR external pipeline 52 be preferably 290～350mm, like this can so that through the waste gas of EGR valve 51 lower the temperature once again 48～60 ℃, to avoid the intake manifold 21 of the too high plastic material of burning of EGT.
For ignition system, please referring to especially paying close attention to Fig. 3 in Fig. 1 to Fig. 4, ignition system comprises spark plug 61, spark coil 62, spark plug conduit 63 and oil seal washer 64.Wherein:
The end face of cylinder cap 12 further is equipped with the machine oil chamber 120 that formation is communicated with aforementioned oil pump 14 between the end face of the cylinder head cover 13 that covers cylinder cap 12 and timing shell 40, cylinder head cover 13 and cylinder cap 12; Each cylinder 110 the spark plug 61 near cylinder cap 12 1 sides pass machine oil chamber 120 and with spark coil 62 conductings in the outside of being fixed in cylinder head cover 13, and, spark plug 61 shared spark coils 62 of per 2 cylinders 110.Like this, can simplify the mounting structure of ignition system.
Because the spark plug 61 of each cylinder 110 passes machine oil chamber 120; Therefore; For spark plug 61 and machine oil chamber 120 are isolated, socket one spark plug conduit 63 is also distinguished in the outside of the spark plug 61 of each cylinder 110, like this; Can remove from cylinder cap 12 and form the structure that is exclusively used in isolation spark plug 61, thereby can reduce the casting difficulty and the processing cost of cylinder cap 12.
And each spark plug conduit 63 is sealed by oil seal washer 64 near an end of cylinder head cover 13.
If the petrol engine among the utility model embodiment adopts the preferred version of each several part simultaneously, then the power per liter of this petrol engine can reach the specific fuel consumption reduction by 4～5% of 55KW/L and working zone.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the scope of the utility model protection.
Claims (14)
1. a petrol engine is characterized in that, comprises at least:
The petrol engine body is assembled and is formed with cylinder by cylinder body and cylinder cap;
Intake manifold is communicated with the intake valve of said cylinder;
Electronic throttle is communicated with said intake manifold;
Admission cam shaft is installed in said petrol engine body and controls the unlatching and the closure of said intake valve;
Gas exhaust manifold is communicated with the exhaust valve of said cylinder;
Exhaust cam shaft is installed in said petrol engine body and controls the unlatching and the closure of said exhaust valve;
The VVT assembly connects an end of said admission cam shaft in the outside of said petrol engine body;
Timing chain is realized chain-driven between said VVT assembly and said exhaust cam shaft;
Timing shell covers in the outside of said VVT assembly and said timing chain;
OCV is integrally formed in said timing shell and controls said VVT assembly through the said VVT oil circuit that is integrally formed in said timing shell;
The EGR valve is installed in by the cooling water channel of said petrol engine body;
The built-in path of EGR is arranged in the said cylinder cap and said gas exhaust manifold is communicated with said EGR valve;
The EGR external pipeline extends outside said petrol engine body and said EGR valve is communicated with said intake manifold.
2. petrol engine according to claim 1 is characterized in that, said cylinder is 4.
3. petrol engine according to claim 2 is characterized in that, the centre distance between 4 said cylinders is that the cylinder diameter of 76mm, each said cylinder is 70～70.015mm.
4. petrol engine according to claim 2 is characterized in that, the piston stroke in each said cylinder is that 80.8mm, piston compression height are 28.4～28.6mm.
5. petrol engine according to claim 4 is characterized in that, the compression ratio of each said cylinder is 10.
6. petrol engine according to claim 5 is characterized in that, the piston in each said cylinder is 25.74～26.54cm at the volume near the formed firing chamber of a side of said cylinder cap
3
7. petrol engine according to claim 6 is characterized in that, the end face of said cylinder cap further be equipped with the cylinder head cover that covers said cylinder cap and said timing shell and and the end face of said cylinder cap between form the machine oil chamber; Each said cylinder the spark plug near said cylinder cap one side pass said machine oil chamber and with the spark coil conducting in the outside of being fixed in said cylinder head cover, and, the shared spark coil of the spark plug of per 2 said cylinders.
8. petrol engine according to claim 7 is characterized in that, the outside socket one spark plug conduit of the spark plug of each said cylinder.
9. petrol engine according to claim 8 is characterized in that, each said spark plug conduit is sealed by oil seal washer near an end of said cylinder head cover.
10. petrol engine according to claim 2 is characterized in that, said admission cam shaft is a Dual Over Head Camshaft.
11. petrol engine according to claim 2 is characterized in that, the intake advance angle of said intake valve is that-14 °～26 °, air inlet retardation angle are 26 °～66 °, and the exhaust advance angle of said exhaust valve is that 49 °, exhaust lag angle are 7 °.
12. petrol engine according to claim 1 is characterized in that, said timing chain is by a stretcher tensioning.
13. petrol engine according to claim 1 is characterized in that, the length of said EGR external pipeline is 290～350mm.
14. petrol engine according to claim 1 is characterized in that, further comprises:
Oil pump is shaped in said timing shell and is communicated with said machine oil chamber;
Water pump is shaped in said timing shell, and is communicated with said entry base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205076371U CN202325847U (en) | 2011-12-07 | 2011-12-07 | Gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205076371U CN202325847U (en) | 2011-12-07 | 2011-12-07 | Gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325847U true CN202325847U (en) | 2012-07-11 |
Family
ID=46437830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205076371U Expired - Fee Related CN202325847U (en) | 2011-12-07 | 2011-12-07 | Gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625537A (en) * | 2018-11-30 | 2019-04-16 | 重庆怡之驰机械有限公司 | A kind of gasoline machine support |
-
2011
- 2011-12-07 CN CN2011205076371U patent/CN202325847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625537A (en) * | 2018-11-30 | 2019-04-16 | 重庆怡之驰机械有限公司 | A kind of gasoline machine support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450016 Zhengzhou East Road, Henan, No. seventeenth, No. 1689 Patentee after: Haima Business Automobile Co.,Ltd. Patentee after: HAIMA MOTOR Corp. Patentee after: FAW HAIMA AUTOMOBILE CO.,LTD. Address before: 450016 Zhengzhou East Road, Henan, No. seventeenth, No. 1689 Patentee before: Haima Business Automobile Co.,Ltd. Patentee before: HAIMA CAR Co.,Ltd. Patentee before: FAW HAIMA AUTOMOBILE CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450016 1689 seventeenth Avenue, nautical Road East, Zhengzhou, Henan Co-patentee after: HAIMA MOTOR Corp. Patentee after: HAIMA NEW ENERGY VEHICLE Co.,Ltd. Co-patentee after: FAW HAIMA AUTOMOBILE CO.,LTD. Address before: 450016 1689 seventeenth Avenue, nautical Road East, Zhengzhou, Henan Co-patentee before: HAIMA MOTOR Corp. Patentee before: Haima Business Automobile Co.,Ltd. Co-patentee before: FAW HAIMA AUTOMOBILE CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180517 Address after: 450016 1689 seventeenth Avenue, nautical Road East, Zhengzhou, Henan Co-patentee after: HAIMA MOTOR Corp. Patentee after: HAIMA NEW ENERGY VEHICLE Co.,Ltd. Co-patentee after: FAW HAIMA AUTOMOBILE Co.,Ltd. Address before: 450016 1689 seventeenth Avenue, nautical Road East, Zhengzhou, Henan Co-patentee before: HAIMA MOTOR Corp. Patentee before: HAIMA NEW ENERGY VEHICLE Co.,Ltd. Co-patentee before: FAW HAIMA AUTOMOBILE CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20191207 |