CN213540596U - Direct injection fuel injection system of gasoline engine - Google Patents
Direct injection fuel injection system of gasoline engine Download PDFInfo
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- CN213540596U CN213540596U CN202021082103.4U CN202021082103U CN213540596U CN 213540596 U CN213540596 U CN 213540596U CN 202021082103 U CN202021082103 U CN 202021082103U CN 213540596 U CN213540596 U CN 213540596U
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Abstract
The utility model relates to a gasoline engine directly spouts fuel injection system, including fuel injection mechanism and cam actuating mechanism, cam actuating mechanism with fuel injection mechanism's high-pressure oil pump connection, cam actuating mechanism includes the convex peach and is used for the drive the oil pump tappet of high-pressure oil pump, the convex peach is located on the camshaft, the convex peach with the one end of oil pump tappet is connected, the other end of oil pump tappet with high-pressure oil pump connection. According to the scheme, the direct injection is carried out in the overhead cylinder, the proportion of air to fuel in each cycle can be accurately controlled through the overhead direct injection arrangement, the direct injection fuel injector injects high-pressure fuel into a combustion chamber, the high-pressure fuel enters in a fine mist form, the cylinder can be cooled, and the possibility of detonation is reduced; meanwhile, the cam integrated on the camshaft is used for driving the high-pressure oil pump, the arrangement mode can enable the arrangement of the engine to be more compact, an additional driving system does not need to be considered for driving the high-pressure oil pump, and the working efficiency of the engine is improved.
Description
Technical Field
The utility model relates to an automobile manufacturing field especially relates to a gasoline engine directly spouts fuel injection system.
Background
At present, the gasoline engine generally adopts air inlet channel injection and direct in-cylinder injection. The air-inlet channel injection cannot accurately control the ratio of air to fuel oil in each cycle, the temperature in a cylinder is low and the evaporation of oil gas is incomplete in the cold starting process, so that the actual fuel injection quantity far exceeds the fuel injection quantity calculated according to the theoretical air-fuel ratio, and the phenomena of fire catching or incomplete combustion are easy to occur in the cold starting process, so that the emission is increased; most of the cylinder direct injection systems on the market at present adopt side injection and oil injection pressure of 200bar, so that fuel oil easily collides the wall, the engine oil is seriously diluted, the fuel oil atomization is not good, and the emission of an engine is influenced. And the existing high-pressure oil pump driving system needs to be additionally arranged, so that the whole oil injection system is bulkier, the oil injection effect is influenced, and the phenomenon of asynchronous progress is easy to occur.
Disclosure of Invention
The utility model provides a gasoline engine directly spouts oil spout system aims at solving current oil spout system not good to fuel atomization effect, and the system of drive oil pump needs to set up in addition, easily appears the asynchronous problem of process.
The utility model provides a gasoline engine directly spouts fuel injection system, including fuel injection mechanism and cam actuating mechanism, cam actuating mechanism with fuel injection mechanism's high-pressure oil pump connection, cam actuating mechanism includes the convex peach and is used for the drive the oil pump tappet of high-pressure oil pump, the convex peach is located on the camshaft, the convex peach with the one end of oil pump tappet is connected, the other end of oil pump tappet with high-pressure oil pump connection.
As a further improvement of the utility model, the convex peach adopts a quadrilateral shape.
As a further improvement, the oil injection mechanism includes oil sprayer, high pressure fuel pipe and high pressure oil rail, high pressure fuel pipe's one end with high pressure oil pump's output is connected, high pressure fuel pipe's the other end with high pressure oil rail connects, the oil sprayer set up in on the high pressure oil rail and with high pressure oil rail intercommunication.
As a further improvement, the one end of high pressure oil rail is equipped with and is used for detecting the pressure sensor of high pressure oil rail internal pressure.
As a further improvement of the utility model, the fuel injector is arranged on the fuel injector mounting opening at the top of the engine cylinder body.
As a further improvement of the utility model, the fuel injector is provided with four at least.
The utility model has the advantages that: the scheme adopts the top-set in-cylinder direct injection, the top-set direct injection arrangement can accurately control the proportion of air and fuel oil in each cycle, and the uniformity of each cylinder can be controlled within 3%; the direct injection fuel injector sprays high-pressure fuel into a combustion chamber, the fuel enters in a fine mist shape, and absorbs heat when the fuel is evaporated, so that a cylinder can be cooled, and the possibility of detonation is reduced; the engine can perform lean combustion, can improve the combustion efficiency, has more air input than the traditional engine, can perform full combustion, and can reduce the emission; meanwhile, the cam integrated on the camshaft is used for driving the high-pressure oil pump, the arrangement mode can enable the arrangement of the engine to be more compact, an additional driving system does not need to be considered for driving the high-pressure oil pump, and the working efficiency of the engine is improved.
Drawings
FIG. 1 is a schematic view of the present invention assembled to an engine block;
FIG. 2 is a schematic view of the fuel injection mechanism of the present invention;
fig. 3 is a schematic diagram of the cam driving mechanism of the present invention.
Detailed Description
Reference numerals: 1-engine cylinder block, 2-camshaft, 3-convex peach, 4-oil pump tappet, 5-high-pressure oil pump, 6-high-pressure oil pipe, 7-high-pressure oil rail, 8-oil injector and 9-pressure sensor.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1, the utility model provides a gasoline engine directly spouts oil spout system, including fueling injection mechanism and cam actuating mechanism, cam actuating mechanism with fueling injection mechanism's high pressure oil pump 5 is connected, cam actuating mechanism includes protruding peach 3 and is used for the drive oil pump tappet 4 of high pressure oil pump 5, protruding peach 3 is located on camshaft 2, protruding peach 3 with the one end of oil pump tappet 4 is connected, the other end of oil pump tappet 4 with high pressure oil pump 5 connects.
As an embodiment of the present invention, the shape of the protruding peach 3 is quadrilateral.
As another embodiment of the utility model, the oil spout mechanism includes sprayer 8, high pressure fuel pipe 6 and high pressure oil rail 7, high pressure fuel pipe 6 one end with high pressure oil pump 5's output is connected, high pressure fuel pipe 6 the other end with high pressure oil rail 7 is connected, sprayer 8 set up in on the high pressure oil rail 7 and with high pressure oil rail 7 intercommunication.
As another embodiment of the utility model, the one end of high pressure oil rail 7 is equipped with and is used for detecting pressure sensor 9 of 7 internal pressures of high pressure oil rail.
As another embodiment of the present invention, the fuel injector 8 is disposed on an injector mounting opening at the top of the engine cylinder 1.
As another embodiment of the present invention, at least four fuel injectors 8 are provided.
The utility model provides a gasoline engine directly spouts oil spout system, this system by cam drive mechanism drive, cam drive mechanism includes protruding peach 3 and oil pump tappet 4, protruding peach 3 is the quadrangle, and is integrated on the camshaft 2, during 2 rotations of camshaft, drive protruding peach 3 is rotatory, can know by figure 3, works as protruding peach 3's pointed end with during the one end contact of oil pump tappet 4, can promote oil pump tappet 4 up-moves, the drive 5 outputs of high-pressure oil pump, after rotating a certain angle protruding peach 3's plane end with during the one end contact of oil pump tappet 4, then oil pump tappet 4 down-moves, high-pressure oil pump 5 stops the output, can drive when next stroke comes 5 work of high-pressure oil pump, and is reciprocal so. Therefore, four pointed ends of the convex peach 3 correspond to four cylinders of the engine, the four pointed ends drive the high-pressure oil pump 5 to generate oil pressure of 350bar according to the running point of the engine along with the rotation of the camshaft 2, the process synchronization is realized, and meanwhile, the engine does not need to be externally provided with a driving system, so that the whole structure of the engine is more compact, and the working efficiency is improved.
As shown in fig. 2, after the high-pressure oil pump 5 outputs fuel, the fuel enters the high-pressure fuel rail 7 through the high-pressure fuel pipe 6, and due to pressure, the fuel is pushed into the injector 8, and the fuel is directly injected into the cylinder from the injection port of the injector 8. The fuel injector 8 is arranged at the top of the engine cylinder body 1, the proportion of air and fuel in each cycle can be accurately controlled by adopting an overhead arrangement mode, the uniformity of each cylinder is controlled within 3 percent, the fuel atomization can be better realized by adopting high-pressure fuel injection pressure of 350bar, the fuel enters the cylinder in a fine mist shape, and the fuel absorbs heat when the fuel is evaporated, so that the cylinder can be cooled, and the possibility of detonation is reduced; meanwhile, the combustion can be lean, so that the combustion is more sufficient, and the emission of particles is reduced. Compared with the common electronic injection engine, the scheme has the advantages that the concentration of the mixed gas is reduced, the economy is improved, the direct injection engine can save more oil when doing the same much work. The pressure sensor 9 is arranged at one end of the high-pressure oil rail 7 and used for detecting the pressure in the high-pressure oil rail 7, and once the pressure is too high or too low, the pressure is timely notified to a control system for corresponding treatment, so that the normal operation of the engine is ensured.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (6)
1. The utility model provides a gasoline engine directly spouts fuel injection system, its characterized in that, includes fuel injection mechanism and cam actuating mechanism, cam actuating mechanism with fuel injection mechanism's high-pressure oil pump is connected, cam actuating mechanism includes the lug and is used for the drive the oil pump tappet of high-pressure oil pump, the lug is located on the camshaft, the lug with the one end of oil pump tappet is connected, the other end of oil pump tappet with high-pressure oil pump is connected.
2. The direct injection fuel injection system of claim 1, wherein said lobes are quadrilateral in shape.
3. The direct injection fuel injection system of claim 2, wherein said fuel injection mechanism includes a fuel injector, a high pressure fuel pipe and a high pressure fuel rail, one end of said high pressure fuel pipe is connected to an output end of said high pressure fuel pump, the other end of said high pressure fuel pipe is connected to said high pressure fuel rail, and said fuel injector is disposed on said high pressure fuel rail and is in communication with said high pressure fuel rail.
4. The direct injection fuel injection system for gasoline engines of claim 3, wherein one end of said high pressure rail is provided with a pressure sensor for detecting the pressure in said high pressure rail.
5. The direct injection fuel injection system of claim 4, wherein said fuel injector is disposed in an injector mounting port in the top of the engine block.
6. The direct injection fuel injection system for gasoline engines of claim 5 wherein there are at least four injectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021082103.4U CN213540596U (en) | 2020-06-12 | 2020-06-12 | Direct injection fuel injection system of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021082103.4U CN213540596U (en) | 2020-06-12 | 2020-06-12 | Direct injection fuel injection system of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540596U true CN213540596U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021082103.4U Active CN213540596U (en) | 2020-06-12 | 2020-06-12 | Direct injection fuel injection system of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540596U (en) |
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2020
- 2020-06-12 CN CN202021082103.4U patent/CN213540596U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210917 Address after: 545007 No.1, Che Yuan Heng Er Road, Yufeng District, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Liuzhou Saike Technology Development Co.,Ltd. Address before: 545007 No.1, Che Yuan Heng Er Road, Yufeng District, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee before: LIUZHOU SAIC AUTO TRANSMISSION Co.,Ltd. LIUDONG BRANCH |
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| TR01 | Transfer of patent right |