CN201826977U - Fuel injection mechanism of single-fuel natural gas engine - Google Patents
Fuel injection mechanism of single-fuel natural gas engine Download PDFInfo
- Publication number
- CN201826977U CN201826977U CN2010205819492U CN201020581949U CN201826977U CN 201826977 U CN201826977 U CN 201826977U CN 2010205819492 U CN2010205819492 U CN 2010205819492U CN 201020581949 U CN201020581949 U CN 201020581949U CN 201826977 U CN201826977 U CN 201826977U
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- Prior art keywords
- gas nozzle
- gas
- fuel
- engine
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000446 fuel Substances 0.000 title claims abstract description 25
- 238000002347 injection Methods 0.000 title claims abstract description 13
- 239000007924 injection Substances 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 title claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 10
- 239000003345 natural gas Substances 0.000 title abstract description 5
- 239000010705 motor oil Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 50
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 12
- 239000003921 oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
一种天然气单燃料发动机的燃料喷射机构，它包括有发动机进气歧管本体，燃气喷嘴，其技术要点是：在靠近发动机进气歧管安装座的进气门位置上设置有助于混合气充分混合的燃气喷嘴；所述的燃气喷嘴包括有一燃气喷嘴外壳，在燃气喷嘴外壳的前端设置一带有阀座的针阀，在针阀后端设有弹簧，与弹簧对应的燃气喷嘴外壳上设置有衔铁及电磁线圈。燃气喷嘴的电控单元通过监测发动机各种传感器的信号，以及驾驶员操作指令，经单片机运算后对喷油参数进行控制，在保证车辆较好排放和燃气消耗的同时提供良好的起动和驾驶性能。燃气喷嘴安装在汽油发动机喷油嘴的位置，更加接近发动机进气门，使得喷气效率明显提高，有助于混合气的充分混合，提高燃烧效率。
A fuel injection mechanism for a natural gas single-fuel engine, which includes an engine intake manifold body and a gas nozzle. Fully mixed gas nozzle; the gas nozzle includes a gas nozzle casing, a needle valve with a valve seat is arranged at the front end of the gas nozzle casing, a spring is arranged at the rear end of the needle valve, and a gas nozzle casing corresponding to the spring is provided With armature and electromagnetic coil. The electronic control unit of the gas nozzle monitors the signals of various sensors of the engine and the driver's operation instructions, and controls the fuel injection parameters after the calculation of the single-chip microcomputer, so as to provide good starting and driving performance while ensuring good emission and gas consumption of the vehicle . The gas nozzle is installed at the position of the fuel injector of the gasoline engine, which is closer to the engine intake valve, so that the injection efficiency is significantly improved, which is conducive to the full mixing of the mixture and improves the combustion efficiency.
Description
Technical field
The utility model belongs to the gas as single fuel technical field of engines, specifically a kind of fuel injection mechanism of gas as single fuel motor.
Background technique
Serious year by year along with the exhausted day by day and environmental pollution problem of the energy, countries in the world are more and more paid attention to the energy-conserving and environment-protective problem.Automotive industry in more than 100 year of its development, though energy-conservation, pollute, discharging and have all obtained significant improvement and significant progress aspect some other, the pollutant that its tail gas is discharged is still the primary pollution source of current earth atmosphere.Automobile industry has consumed a big chunk of world oil output, countries in the world are also more and more paid attention to the hybrid vehicle Study on Technology under this overall background, each big auto vendor drops into the exploitation that substantial contribution carries out various alternative fuel cars one after another, and the car that acts as a fuel with rock gas arises at the historic moment.Rock gas becomes the whole world and increases one of the swiftest and the most violent energy industry with the rapid growth in every year about 12%, will become the popular energy commodity of oil next afterwards whole world contention.For guaranteeing the energy supply diversification and improve energy consumption structure, country more and more payes attention to the exploitation of rock gas car, and natural gas engine is subjected to paying close attention to widely and attention highly as the core technology of rock gas car especially.
Summary of the invention
The purpose of this utility model is the fuel injection mechanism that a kind of gas as single fuel motor is provided on traditional single-fuel engine basis.
The purpose of this utility model is achieved in that it includes the engine intake manifold body, gas nozzle, the intake manifold mounting hole is characterized in that: the intake valve position of close engine intake manifold fitting seat is provided with and helps the well-mixed gas nozzle of mixed gas; Described gas nozzle includes a gas nozzle shell, at the front end of gas nozzle shell one needle-valve that has a valve seat is set, and is provided with spring in the needle-valve rear end, and the gas nozzle shell corresponding with spring is provided with armature and electromagnetic coil.
Described gas nozzle is installed on the position of petrol engine oil nozzle.
Be in series with a low-side switch and high-side switch respectively at the two ends of electromagnetic coil as mentioned above.
With respect to the fuel injection mode of the right gas single-fuel engine of routine, this utlity model has following advantage:
1, nozzle has very high speed of response, opens total reponse time and only is 0.8ms.The demand that is fit to very much the control of high speed engine and highi degree of accuracy gas quantity.The ECU (Electrical Control Unit) of nozzle is by the signal of the various sensors of monitoring motor, and from the driver's operation instruction of efp position transducer output, after the computing of control core single-chip microcomputer, the oil spout key parameter is controlled, when guaranteeing better discharging of vehicle and gas consumption, provided good starting and cornering ability.
2, this structure is different with its traditional natural gas engine, has cancelled the rock gas inlet hole of motor, adopts the special-purpose blast nozzle of rock gas; The position of installing is not also on intake manifold but the position of petrol engine oil nozzle.
3. the blast nozzle mounting point makes jet efficient obviously improve more near engine intake valve, helps the abundant mixing of mixed gas, improves combustion efficiency.
Description of drawings
Fig. 1 is a three-dimensional deployed configuration simplified schematic diagram of the present utility model;
Fig. 2 is a gas spraying gas nozzle structure simplified schematic diagram of the present utility model;
Fig. 3 is a rock gas nozzle mode of operation theory diagram of the present utility model;
Fig. 4 is a rock gas nozzle electronic pulse width signal driving mode principle sketch of the present utility model.
To be described in further detail the utility model by example below; but following example only is the utility model example wherein; the rights protection scope of not representing the utility model and being limited, rights protection scope of the present utility model is as the criterion with claims.
Embodiment
Example 1
Shown in Fig. 1-2,4 among the figure is engine intake manifold, is being provided with gas nozzle fitting seat 2 near on the position of intake valve, and the intake valve position of close engine intake manifold fitting seat 2 is provided with and helps the well-mixed gas nozzle 1 of mixed gas; Described gas nozzle 1 includes a gas nozzle shell 109, at the front end of gas nozzle shell 109 needle-valve 102 that has a valve seat 103 is set, be provided with return spring 101 in needle-valve 102 rear ends, embedding on the embedding gas nozzle shell 109 corresponding with return spring 101 has armature 107 and electromagnetic coil 108.Not, 104 among the figure is the needle-valve spray orifice, and 105 is the sheath of valve seat, and 106 is the block of needle-valve 102 spacing needle-valves 102 and return spring 101.Among Fig. 13 is the intake manifold mounting hole.The blast nozzle mounting point of this structure promptly in conventional gasoline engin oil nozzle position, more near engine intake valve, makes jet efficient obviously improve as shown in Figure 1, 2, helps the abundant mixing of mixed gas, improves combustion efficiency.
The mode of operation of rock gas nozzle as shown in Figure 3, this is the control system of a closed loop.The working state and the driver command of sensor acquisition motor send feedback signal; ECU (Electrical Control Unit) receives the feedback signal of sensor, according to the control logic of motor itself, sends instruction, and promptly electrical pulse drives (PWM) signal; Electromagnetic coil 108 receives and produces electromagnetic force after electrical pulses drive (PWM) signals, electromagnetic force control armature 107 and make needle-valve 102 overcome spring 101 elastic force to move, thus open the hole of 103 of needle-valve 102 and valve seats, the rock gas ejection; According to the variation of pwm signal, the opening and closing moment that the control gas nozzle is different, thus obtain different fuel injection times and emitted dose; Whole process provides power supply by the power module unit.
As shown in Figure 4: the rock gas nozzle adopts electrical pulse (PWM) drive signal mode, and the high-order pulsewidth of pwm pulse has directly reflected the emitted dose of rock gas, and effective pulsewidth of natural gas injection is considered the lag time that solenoid valve opens, cuts out.Nozzle drives the driving mode that adopts high-order and low-side switch, and what nozzle was opened keeps electric current by the decision of low-side switch endurance, and high-side switch control nozzle is opened the greatest measure of electric current, and the nozzle driving current is 4A, is 1A and keep electric current.Nozzle drive circuit and waveform as shown in the figure, this kind driving mode can reduce the power consumption of gas nozzle to greatest extent, increases the life-span and the reliability of nozzle.
Claims (3)
1. the fuel injection mechanism of a gas as single fuel motor, it includes the engine intake manifold body, gas nozzle, the intake manifold mounting hole is characterized in that: the intake valve position of close engine intake manifold fitting seat is provided with and helps the well-mixed gas nozzle of mixed gas; Described gas nozzle includes a gas nozzle shell, at the front end of gas nozzle shell one needle-valve that has a valve seat is set, and is provided with spring in the needle-valve rear end, and the gas nozzle shell corresponding with spring is provided with armature and electromagnetic coil.
2. the fuel injection mechanism of gas as single fuel motor according to claim 1 is characterized in that: gas nozzle is installed on the position of petrol engine oil nozzle.
3. the fuel injection mechanism of gas as single fuel motor according to claim 1 is characterized in that: the two ends at described electromagnetic coil are in series with a low-side switch and high-side switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205819492U CN201826977U (en) | 2010-10-29 | 2010-10-29 | Fuel injection mechanism of single-fuel natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205819492U CN201826977U (en) | 2010-10-29 | 2010-10-29 | Fuel injection mechanism of single-fuel natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826977U true CN201826977U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205819492U Expired - Lifetime CN201826977U (en) | 2010-10-29 | 2010-10-29 | Fuel injection mechanism of single-fuel natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985906A (en) * | 2010-10-29 | 2011-03-16 | 华晨汽车集团控股有限公司 | Fuel injection mechanism for natural gas single-fuel engine |
-
2010
- 2010-10-29 CN CN2010205819492U patent/CN201826977U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985906A (en) * | 2010-10-29 | 2011-03-16 | 华晨汽车集团控股有限公司 | Fuel injection mechanism for natural gas single-fuel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20130227 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |