CN112253348A - Liquid fuel internal combustion engine and liquid fuel injection device thereof - Google Patents
Liquid fuel internal combustion engine and liquid fuel injection device thereof Download PDFInfo
- Publication number
- CN112253348A CN112253348A CN202010968926.5A CN202010968926A CN112253348A CN 112253348 A CN112253348 A CN 112253348A CN 202010968926 A CN202010968926 A CN 202010968926A CN 112253348 A CN112253348 A CN 112253348A
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- Prior art keywords
- liquid fuel
- internal combustion
- combustion engine
- traction
- fuel injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/851—Mounting of fuel injection apparatus provisions for adjusting the angular, rotational or axial position of injectors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention belongs to the technical field of internal combustion engines, and discloses a liquid fuel injection device for a liquid fuel internal combustion engine, which comprises: the device comprises an injection base, a flexible pipe, a spray head and a traction mechanism; the flexible pipe is fixed on the injection base, and the spray head is communicated with the first end of the flexible pipe; the traction mechanism is arranged on the spraying base and connected with the spray head. The liquid fuel injection device for the liquid fuel internal combustion engine can realize the adjustment of the injection angle, thereby being capable of adjusting the injection angle along with the position change of the piston.
Description
Technical Field
The invention relates to the technical field of internal combustion engines, in particular to a liquid fuel internal combustion engine and a liquid fuel injection device thereof.
Background
In the prior art, the injection angle of an injection device of a liquid fuel internal combustion engine is fixed, in order to achieve good spray atomization effect and avoid wall wetting, a multi-hole design is carried out on a nozzle of the injection device, the directions of each hole are different, and the purpose is achieved by adopting higher injection pressure. Fixed angle fuel injection systems can only compromise an optimum injection angle because the volume of the cylinder varies at all times as a result of the reciprocating motion of the piston. However, when the piston is located at the upper position, fuel is easily injected to the piston to form an oil film, and further, insufficient combustion occurs, and even oil dilution increases as the oil enters the oil pan from a clearance between the piston and the cylinder. When the piston is positioned at the lower part, the injected oil mist is concentrated at the upper part and cannot be well mixed with the gas in the cylinder to form a homogeneous combustible mixed gas, so that the subsequent combustion is uneven, the oil consumption of a vehicle is high, and even the engine knocks and is damaged.
Disclosure of Invention
The invention provides a liquid fuel internal combustion engine and a liquid fuel injection device thereof, which solve the technical problems of insufficient and uneven combustion easily caused by the injection device of the liquid fuel internal combustion engine in the prior art.
In order to solve the above-described technical problem, the present invention provides a liquid fuel injection device for a liquid fuel internal combustion engine, comprising: the device comprises an injection base, a flexible pipe, a spray head and a traction mechanism;
the flexible pipe is fixed on the injection base, and the spray head is communicated with the first end of the flexible pipe;
the traction mechanism is arranged on the spraying base and connected with the spray head.
Further, a fluid channel is formed in the injection base, and the second end of the flexible pipe is communicated with the fluid channel.
Further, the flexible pipe is a corrugated pipe.
Further, the traction mechanism includes: a pull cord and a drive member;
the first end of the traction rope is fixed on the spray head, and the second end of the traction rope is connected with the driving piece.
Furthermore, a support lug is arranged on the tube body of the flexible tube, and the first end of the traction rope penetrates through the support lug and then is fixed on the spray head.
Further, the driving member includes: a traction wire wheel and a traction motor;
and the second end of the traction rope is wound on the traction wire wheel, and the traction wire wheel is fixed on a rotating shaft of the traction motor.
Furthermore, a traction channel is formed in the injection base, and a rope body of the traction rope is embedded in the traction channel.
Further, the apparatus further comprises: an injection controller and a piston positioning module;
the piston positioning module and the traction mechanism are respectively connected with the injection controller.
A liquid-fueled internal combustion engine comprising: the liquid fuel injection device for the liquid fuel internal combustion engine comprises a liquid internal combustion engine main body, a piston positioning module and a liquid fuel injection device for the liquid fuel internal combustion engine;
the liquid fuel injection device for the liquid fuel internal combustion engine is fixed on the internal combustion engine main body, and the piston positioning module is arranged on the liquid internal combustion engine main body;
the piston positioning module and the traction mechanism are respectively connected with a control unit of the liquid internal combustion engine main body.
Further, the piston positioning module includes: a crankshaft phase sensor;
the crankshaft phase sensor is arranged on the liquid internal combustion engine main body and is connected with the control unit.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the liquid fuel internal combustion engine and the liquid fuel injection device thereof provided by the embodiment of the application are suitable for the fuel injection mode of the liquid internal combustion engine, the injection base is arranged for connecting an upstream liquid fuel source structure, and the flexible pipe and the nozzle connected with the flexible pipe are arranged, so that the nozzle can deflect within a certain angle range, the adjustment of the fuel injection angle is possible, and the defect that the injection angle cannot be adjusted in the prior art is completely avoided; meanwhile, in order to realize the adjustment of the injection angle of the nozzle, the injection base is provided with a traction mechanism connected with the nozzle, so that the injection angle can be adjusted by taking the injection base as a fulcrum, the position of the piston can be adapted, the injection angle can be adjusted, and the uniform mixing and the sufficient combustion of fuel can be realized.
Drawings
Fig. 1 is a schematic structural view of a liquid fuel injection device provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a piston high-position state structure of a liquid fuel internal combustion engine according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a piston in a low position state of the liquid fuel internal combustion engine according to the embodiment of the invention.
Detailed Description
The embodiment of the application solves the technical problems that in the prior art, the injection device of the liquid fuel internal combustion engine is easy to cause insufficient and uneven combustion by providing the liquid fuel internal combustion engine and the liquid fuel injection device thereof.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, a liquid fuel injection apparatus 1 for a liquid fuel internal combustion engine includes: a spray base 11, a flexible tube 12, a spray head 13 and a pulling mechanism.
The flexible pipe 12 is fixed on the injection base 11, and the spray head 13 is communicated with the first end of the flexible pipe 12, so that the spray head 13 can deflect within a certain angle range, and the adjustment of the injection angle is possible. On the basis, the injection base is provided with the traction mechanism and is connected with the spray head 13, so that the injection angle can be actively adjusted by operating the traction mechanism with the injection base 11 as a fulcrum, and the liquid fuel is uniformly mixed with air and is fully combusted in the internal combustion engine.
In order to realize a highly integrated arrangement, a fluid passage is formed in the ejection base 11, and the second end of the flexible tube 12 communicates with the fluid passage; on one hand, a through fluid passage is formed, so that the fuel is convenient to convey; on the other hand, the length of the flexible tube 12 can be kept relatively short, i.e. only the deflection amplitude requirement of the spray head 13 needs to be maintained, but not too long, so as to avoid the problems that the instability of the flexible structure itself causes collision with other structures in the installation environment, and the like.
Meanwhile, in the embodiment, since the angle adjustment is active, after the traction mechanism acts, the spray head 13 is pulled to deflect until the target angle is reached; after the position of the piston changes, the angle of the nozzle 13 needs to be reset to meet the requirement of the injection angle.
In view of this, in this embodiment, the traction force of the traction mechanism is released when a return is required, urging the return of the flexible tube 12 away from the direction of traction by the fluid pressure of the fuel flow within the flexible tube 12; the release of the pulling mechanism is not open, but is released according to the initial pulling amplitude, and once the flexible pipe 12 is reset, the flexible pipe will not deflect in the resetting direction under the action of fluid pressure, so that the reliability of the adjustment of the spraying angle is ensured.
Of course, the present embodiment utilizes a mechanism in which fluid pressure causes a return, thus setting the initial injection angle to a state in which the fitting piston is in a certain limit position; specifically, in the present embodiment, when the piston is in the high position, the better injection angle at this time is the initial angle; meanwhile, in order to avoid the fatigue deformation effect of the flexible pipe 12, the straight state of the flexible pipe 12 is taken as an initial state; the setting of the initial state can also reduce the fluid pressure to a certain extent to push the reset to reach the limit, reduce the pulling on the traction mechanism and quickly recover the steady state, and is particularly suitable for high-frequency operation.
On the other hand, in order to ensure the angle adjustment efficiency and the state stability and the steady state aging under the high-frequency operation, the traction mechanism can be fixed on the spray head 13 from two symmetrical directions, so that the two directions are matched to realize the active operation of angle adjustment and resetting, the operation efficiency and the reliability are improved, and the randomness of natural resetting through the fluid pressure in the pipe is reduced.
Generally, the flexible tube 12 is a corrugated tube.
In this embodiment, the injection base 11 may also be used as a structural member for connecting upstream fuel supply equipment, and besides fixing the flexible pipe 12, it also performs a fuel delivery function; therefore, the ejection base 11 main body may be provided as a pipe-type structure; correspondingly, a flow guide joint part of the flexible pipe 12 is arranged at the position of an internal channel of the tubular structure, and the flow channel direction of the flow guide joint part is approximately the same as that of the flexible pipe 12; meanwhile, the inner diameter of the tail section of the flow passage of the flow guiding connection part is basically consistent with the inner diameter of the flexible pipe 12; to reduce the vibration of the flexible pipe 12 caused by the conversion of the dynamic and static pressure of the fluid; the reliability of the injection angle is ensured.
In this embodiment, the traction mechanism includes: a traction rope 14 and a drive 15; a first end of the pulling rope 14 is fixed on the nozzle 13, and a second end of the pulling rope 14 is connected with the driving member 15.
That is, the flexible pulling rope 14 pulls the nozzle 13, and the following deformation of the flexible tube 12 adjusts the spraying angle of the nozzle 13. Due to the flexible nature of the pull-cord 14, the directional pulling action is smooth and can better accommodate relatively small spaces.
In cooperation with the deformation process of the flexible pipe 12, a support lug is arranged on the pipe body of the flexible pipe 12, and a first end of the traction rope 14 passes through the support lug and then is fixed on the spray head 13; therefore, when the pulling rope 14 is pulled, the pulling force of the pulling rope 14 is approximately along the deformation direction of the flexible pipe 12, so that the deformation is generated on the whole flexible pipe 12 and is uniformly distributed, the angle adjustment is smoother, the reset vibration amplitude is smaller, and the stable state can be achieved more quickly.
In cooperation, the driving member 15 includes: a traction wire wheel and a traction motor; the second end of the traction rope 14 is wound on the traction wire wheel, the traction wire wheel is fixed on a rotating shaft of the traction motor, and the traction motor is fixed on the injection base 11, so that an independent force application structure of the injection base 11 is formed, and the reliability of angle force application is ensured.
When the angle is adjusted, the traction motor rotates forward and backward to drive the traction wire wheel to take up and pay off the wire, so that the traction rope 14 is tensioned or released, and the angle adjustment and the reset are realized.
Of course, the traction rope can also be directly pulled or released by adopting a telescopic piece such as an air cylinder and the like; of course, other electrically controllable drive elements are also possible.
In order to ensure the reliability of the traction mechanism, a traction channel is formed on the injection base 11, and a rope body of the traction rope is embedded in the traction channel; and the influence of various oil stains, dust and the like on the moving performance of the traction rope 14 can be avoided.
In this embodiment, the injection device may be an independent control structure; thus, the apparatus further comprises: an injection controller and a piston positioning module; the piston positioning module and the traction mechanism are respectively connected with the injection controller. The piston positioning module is used for acquiring the position information of the piston in real time and transmitting the position information back to the injection controller, and the injection controller is used for controlling the traction mechanism to act to pull and release the traction rope, so that the adjustment of the injection angle is automatically controlled.
Generally, the adjustment of the traction amplitude can be realized by controlling the rotation period of the traction motor or the number of turns of the traction wheel, and an encoder can be arranged on the traction line to monitor the number of turns, and the encoder is connected with the injection controller.
Referring to fig. 2 and 3, this example also provides an embodiment in which the injection device is mounted to an internal combustion engine.
A liquid-fueled internal combustion engine comprising: a liquid internal combustion engine main body 4, a piston positioning module 3 and the liquid fuel injection device 1 for the liquid fuel internal combustion engine; the liquid fuel injection device 1 for the liquid fuel internal combustion engine is fixed on a cylinder cover of the internal combustion engine main body 4, and the piston positioning module 3 is arranged on the liquid internal combustion engine main body 4; the piston positioning module 3 and the traction mechanism are respectively connected with the control unit 2 of the liquid internal combustion engine main body 4.
Namely, a control loop of the liquid fuel injection device 1 for the liquid fuel internal combustion engine is established by using the control unit 2 of the liquid internal combustion engine main body 4 as a controller; the integrated arrangement is convenient.
In this embodiment, the piston positioning module 3 includes: a crankshaft phase sensor; the crankshaft phase sensor is arranged on the liquid internal combustion engine body 4, and the crankshaft phase sensor is connected with the control unit 2. The high and low positions of the piston 5 are indirectly judged by detecting the limit of a crankshaft phase signal disc 7 in real time through a crankshaft phase sensor; it should be noted that the crankshaft phase signal disc 7 is provided with teeth of different shapes to represent different phases, and the piston 5 acts to push the crankshaft 6 to pull the crankshaft phase signal disc 7 to rotate, so as to represent the position of the piston 5.
In this embodiment, the injection base 11 is in interference fit with a hole formed in a cylinder head of the liquid internal combustion engine main body 4, so that good sealing is achieved.
Referring to fig. 1, 2 and 3, when the piston 5 is in the high and low positions, the height of the injected fuel fog 16 is obviously different and is always in a better position, so that the fuel fog is fully combusted.
It is worth explaining that, in this implementation, the crank phase sensor judges the crank angle by detecting the shape of the teeth on the crank phase signal panel, and then judges the upper and lower positions of the piston, so as to adjust the length of the traction rope through the driving member to cause the flexible pipe 12 to bend, and further adjust the injection angle of the nozzle 13, the structure is simple, and while the sealing effect of the cylinder can be ensured, the fuel injection angle can be further adjusted steplessly along with the change of the position of the piston 5, thereby avoiding the wall wetting of the fuel at the high position of the piston 5 and the dilution of the engine oil, simultaneously being beneficial to the uniform mixing of the fuel at the low position of the piston and the air, being beneficial to the sufficient combustion, further improving the dynamic property and the economical efficiency of the engine, and reducing the oil consumption.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the liquid fuel internal combustion engine and the liquid fuel injection device thereof provided by the embodiment of the application are suitable for the fuel injection mode of the liquid internal combustion engine, the injection base is arranged for connecting an upstream liquid fuel source structure, and the flexible pipe and the nozzle connected with the flexible pipe are arranged, so that the nozzle can deflect within a certain angle range, the adjustment of the fuel injection angle is possible, and the defect that the injection angle cannot be adjusted in the prior art is completely avoided; meanwhile, in order to realize the adjustment of the injection angle of the nozzle, the injection base is provided with a traction mechanism connected with the nozzle, so that the injection angle can be adjusted by taking the injection base as a fulcrum, the position of the piston can be adapted, the injection angle can be adjusted, and the uniform mixing and the sufficient combustion of fuel can be realized.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A liquid fuel injection apparatus for a liquid fuel internal combustion engine, comprising: the device comprises an injection base, a flexible pipe, a spray head and a traction mechanism;
the flexible pipe is fixed on the injection base, and the spray head is communicated with the first end of the flexible pipe;
the traction mechanism is arranged on the spraying base and connected with the spray head.
2. A liquid fuel injection apparatus for a liquid fuel internal combustion engine as set forth in claim 1, wherein a fluid passage is formed in said injection base, and said second end of said flexible tube communicates with said fluid passage.
3. A liquid fuel injection apparatus for a liquid fuel internal combustion engine as set forth in claim 1, wherein said flexible tube is a bellows tube.
4. A liquid fuel injection apparatus for a liquid fuel internal combustion engine according to claim 1, wherein said traction mechanism includes: a pull cord and a drive member;
the first end of the traction rope is fixed on the spray head, and the second end of the traction rope is connected with the driving piece.
5. A liquid fuel injection apparatus for a liquid fuel internal combustion engine as claimed in claim 4, wherein said flexible tube has a body with a lug thereon, and said pull cord has a first end passing through said lug and then fixed to said nozzle.
6. A liquid fuel injection apparatus for a liquid fuel internal combustion engine as set forth in claim 4, wherein said drive member includes: a traction wire wheel and a traction motor;
and the second end of the traction rope is wound on the traction wire wheel, and the traction wire wheel is fixed on a rotating shaft of the traction motor.
7. A liquid fuel injection apparatus for a liquid fuel internal combustion engine according to claim 4, wherein a drawing passage is formed in said injection base, and a rope body of said drawing rope is fitted into said drawing passage.
8. A liquid fuel injection apparatus for a liquid fuel internal combustion engine according to claim 1, said apparatus further comprising: an injection controller and a piston positioning module;
the piston positioning module and the traction mechanism are respectively connected with the injection controller.
9. A liquid-fueled internal combustion engine, comprising: a liquid fuel injection device for a liquid fuel internal combustion engine according to any one of claims 1 to 7;
the liquid fuel injection device for the liquid fuel internal combustion engine is fixed on the internal combustion engine main body, and the piston positioning module is arranged on the liquid internal combustion engine main body;
the piston positioning module and the traction mechanism are respectively connected with a control unit of the liquid internal combustion engine main body.
10. The liquid-fueled internal combustion engine of claim 9, wherein the piston positioning module comprises: a crankshaft phase sensor;
the crankshaft phase sensor is arranged on the liquid internal combustion engine main body and is connected with the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968926.5A CN112253348B (en) | 2020-09-15 | 2020-09-15 | Liquid fuel internal combustion engine and liquid fuel injection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968926.5A CN112253348B (en) | 2020-09-15 | 2020-09-15 | Liquid fuel internal combustion engine and liquid fuel injection device thereof |
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| Publication Number | Publication Date |
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| CN112253348A true CN112253348A (en) | 2021-01-22 |
| CN112253348B CN112253348B (en) | 2021-12-21 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045469A (en) * | 1990-04-23 | 1992-01-09 | Nissan Motor Co Ltd | Fuel injection device |
| CN2217691Y (en) * | 1994-08-12 | 1996-01-17 | 中阳实业股份有限公司 | Angle-adjustable needle-valve-seat injection nozzle |
| CN1220723A (en) * | 1997-03-26 | 1999-06-23 | 罗伯特·博施有限公司 | Fuel-injection valve, method for producing and use of the same |
| EP1124057A2 (en) * | 2000-02-08 | 2001-08-16 | Siemens Automotive Corporation | Fuel injector with a cone shaped bent spray |
| KR20070060476A (en) * | 2005-12-08 | 2007-06-13 | 현대자동차주식회사 | Fuel injection angle control device |
| JP2007285204A (en) * | 2006-04-17 | 2007-11-01 | Toyota Motor Corp | Internal combustion engine |
| JP2013189905A (en) * | 2012-03-13 | 2013-09-26 | Toyota Motor Corp | Internal combustion engine |
| JP2013241866A (en) * | 2012-05-18 | 2013-12-05 | Isuzu Motors Ltd | Fluid injection direction changing method, fluid injection direction changing mechanism, fuel injection device and internal combustion engine |
-
2020
- 2020-09-15 CN CN202010968926.5A patent/CN112253348B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045469A (en) * | 1990-04-23 | 1992-01-09 | Nissan Motor Co Ltd | Fuel injection device |
| CN2217691Y (en) * | 1994-08-12 | 1996-01-17 | 中阳实业股份有限公司 | Angle-adjustable needle-valve-seat injection nozzle |
| CN1220723A (en) * | 1997-03-26 | 1999-06-23 | 罗伯特·博施有限公司 | Fuel-injection valve, method for producing and use of the same |
| EP1124057A2 (en) * | 2000-02-08 | 2001-08-16 | Siemens Automotive Corporation | Fuel injector with a cone shaped bent spray |
| KR20070060476A (en) * | 2005-12-08 | 2007-06-13 | 현대자동차주식회사 | Fuel injection angle control device |
| JP2007285204A (en) * | 2006-04-17 | 2007-11-01 | Toyota Motor Corp | Internal combustion engine |
| JP2013189905A (en) * | 2012-03-13 | 2013-09-26 | Toyota Motor Corp | Internal combustion engine |
| JP2013241866A (en) * | 2012-05-18 | 2013-12-05 | Isuzu Motors Ltd | Fluid injection direction changing method, fluid injection direction changing mechanism, fuel injection device and internal combustion engine |
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| CN112253348B (en) | 2021-12-21 |
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