CN1279277C - Shunt pressurizing and multiple-point jetting control method for gas engine - Google Patents
Shunt pressurizing and multiple-point jetting control method for gas engine Download PDFInfo
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- CN1279277C CN1279277C CNB031391435A CN03139143A CN1279277C CN 1279277 C CN1279277 C CN 1279277C CN B031391435 A CNB031391435 A CN B031391435A CN 03139143 A CN03139143 A CN 03139143A CN 1279277 C CN1279277 C CN 1279277C
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The present invention discloses a shunt pressurizing and multiple-point jetting control method for a gas engine, which belongs to the control technology of engine fuel pressurization and mixture and fuel jet. The present invention is characterized in that air and gas are firstly shunted for pressurizing and cooling. Then, after firstly entering an air inlet pipe, the air enters air inlet branch pipes of cylinders. The gas firstly passes through a balance valve which is controlled by the air pressure of the air inlet pipe and then enters a gas common rail pipe through a throttle gate. Then, the gas and air in the air inlet branch pipes are together absorbed in the cylinder and are mixed together by an electrically controlled regulation valve. Combustion signals of the cylinders are provided by a combustion sensor, and the signals of the cylinders are collected and processed by an industrial controller. The opening degree of the electrically controlled regulation valve is controlled to become big or small according to the degree of the signals. Thus, the gas entering flow rate of the cylinders changes correspondingly. The present invention has the advantages that back fire blast and blast combustion can be prevented; the multiple-point jet of the cylinders can be independently controlled, and thus, the gas entering flow rate of the cylinders is balanced and stable. The present invention has high safety and reliability and high automation degree and is suitable for gas engines and gas electricity generating groups.
Description
(1) technical field
The present invention relates to motor fuel supercharging and hybrid mode, also relate to the control of engine fuel injection, particularly is a kind of gas engine supercharging multi-point injection controlling method along separate routes.
(2) background technique
Existing supercharging gas engine usually adopts two kinds of coal gas hybrid modes, first premixing mode, and it two is hybrid modes in the multiple spot cylinder.The premixing mode is that coal gas and air mix the back supercharging earlier, enters each cylinder again behind the formation homogeneous charge.Advantage is rotating speed and loads when big model transformation is moving, still can guarantee each cylinder working harmony; Shortcoming is that the problem that the gas handling system tempering is blown out is difficult for solving.Hybrid mode is that air is first by the engine supercharger supercharging in the multiple spot cylinder, and coal gas is earlier by external compressor compresses, and air regularly mixes at each cylinder air inlet place under the control mechanism effect with coal gas then.Advantage is that gas handling system does not exist tempering to blow out problem; Shortcoming is that the concentration and the charge flow rate of each cylinder mixed gas can not be regulated control separately, and work is harmonious poor, and it is big to adjust difficulty, can't satisfy works fine under wide load condition.Patent documentation by retrieval, find several pieces a little less than relevant documents be: " control gear of the pressurized machine of internal-combustion engine " (86105426), " gas engine is given device of air " (99226162.7), " gas flow control device of motor " (02221960.9).They respectively have speciality, and deficiency is also respectively arranged, and are all different with technical characteristics of the present invention.
(3) summary of the invention
Purpose of the present invention just is to provide a kind of gas engine supercharging multi-point injection controlling method along separate routes, overcomes the above-mentioned shortcoming and defect part of prior art, satisfies the requirements at the higher level of gas engine.
Above-mentioned purpose is realized by following technical proposals:
Air, coal gas shunt supercharging and mixture length are: air, coal gas is supercharging along separate routes earlier, again through the cooling of separately intercooler, air is introduced into total inlet pipe then, enter each cylinder intake manifold again, the cooled coal gas of supercharging is earlier through air---gas pressure balance adjustment valve (equilibrium valve), this valve is controlled by the total inlet pipe inner air pressure, make gas pressure and total inlet pipe inner air pressure keep balance, coal gas passes through closure more then, closure is subjected to engine governor control, and coal gas comes out to enter the coal gas common rail pipe by closure again, enters in each cylinder through electric controlled regulating valve again, in the aspirating stroke of each cylinder, air in its intake manifold and the coal gas in the coal gas common rail pipe together are inhaled in this cylinder, and finish mixing in this cylinder, and in other stroke, there is not the high concentration mixed gas in the total inlet pipe
Automatically controlled automatic regulating system, form one by combustion sensor, process control machine and electric controlled regulating valve and regulate closed-loop system automatically, provide burning signal in each cylinder as feedback signal by combustion sensor, by process control machine the feedback signal of each cylinder is carried out data capture and processing, and be converted into electrical signal, compare with setting value again, produce a difference electrical signal, with electric controlled regulating valve as actuator, under the difference action of electric signals, the electric controlled regulating valve aperture increases or reduces, and makes the gas flow that advances of each cylinder correspondingly increase or reduce.
Above-mentioned electric controlled regulating valve mainly is made up of valve casing, upper cover plate, guard shield, lower fixed seat, stepper motor, guide pad, limit sensors, bearing housing, bearing, drive screw, position-arresting disk, sliding axle, axle sleeve, spring and valve.Cover plate is loaded onto in the valve casing upper end, and stepper motor and guard shield thereof are installed on the upper cover plate.Valve casing inwall one side dress guide pad, relative opposite side is loaded onto, the lower limit sensor.The drive screw upper end is connected with the stepper motor output shaft with bearing by bearing housing, and the lower end is connected with the upper end of sliding axle, and position-arresting disk is contained in this joint.Sliding axle stretches out downwards from the axle sleeve in the center hole of valve casing lower end, and inserts in the coal gas common rail pipe.The spool of installation bottom of sliding axle, spool side's mounting spring, valve seat is installed on the following tube wall of coal gas common rail pipe.The valve casing lower end is installed on the upper tube wall of coal gas common rail pipe by lower fixed seat.
Major advantage of the present invention is: air, coal gas supercharging along separate routes also do not advance total inlet pipe by equilibrium valve restriction coal gas, have prevented that effectively tempering from blowing out; Burn signal as the control system feedback signal with cylinder combustion, prevented detonation effectively; Adopt electric controlled regulating valve to do actuator, energy is each cylinder multi-point injection mixture strength of independent regulation automatically, guarantees the harmony of each cylinder operation; Finish data capture and processing by industrial control computer system, realized automatic monitoring and control.
(4) description of drawings
Accompanying drawing 1 is shunt supercharging mixture length of the present invention and multi-point injection control principle skeleton diagram.
Accompanying drawing 2 is shunt supercharging and mixture length skeleton diagrams wherein.
Accompanying drawing 3 is automatical control system functional-block diagrams wherein.
Accompanying drawing 4 is electric controlled regulating valve structural representations.
(5) embodiment
Embodiment of accompanying drawings:
Shown in Fig. 1 or 2, air, coal gas be supercharging along separate routes earlier, again through separately intercooler cooling.Air is introduced into total inlet pipe then, enters each cylinder intake manifold again.The cooled coal gas of supercharging is earlier through equilibrium valve, and equilibrium valve is controlled by the total inlet pipe inner air pressure, makes the air pressure in gas pressure and the total inlet pipe keep balance.Coal gas passes through closure more then, and closure is subjected to engine governor control.Coal gas enters the coal gas common rail pipe again by closure, again in electric controlled regulating valve enters each cylinder.In the aspirating stroke of each cylinder, air in its intake manifold and the coal gas in the coal gas common rail pipe together are inhaled in each cylinder, and finish mixing in each cylinder.
Shown in Fig. 1 or 3, automatical control system of the present invention is made up of combustion sensor, process control machine and electric controlled regulating valve.Provide burning signal in each cylinder as feedback signal by combustion sensor, by process control machine the feedback signal of each cylinder is carried out data capture and processing, and be transformed into voltage signal, compare with the magnitude of voltage of setting again, produce a difference voltage signal.Go to control the electric controlled regulating valve aperture with this signal again and increase or reduce, the charge flow rate of each cylinder is correspondingly increased or reduce.
As shown in Figure 4, electric controlled regulating valve mainly is made up of valve casing 6, upper cover plate 3, guard shield 1, stepper motor 2, guide pad 7, upper and lower level sensor 22 and 20, drive screw 8, position-arresting disk 9, sliding axle 10, axle sleeve 11, lower fixed seat 12, spring 13, valve 14 and 15.Cover plate 3 is installed in the upper end of valve casing 6, and stepper motor 2 and guard shield 1 thereof are installed on the upper cover plate 3.Guide pad 7 is installed in the inwall left side of valve casing 6, and install on the right side, lower limit sensor 22 and 20.The upper end of drive screw 8 is connected with the output shaft of bearing 5 with stepper motor 2 by bearing housing 4, and the lower end is connected with the upper end of sliding axle 10, and position-arresting disk 9 just is installed in this joint.Sliding axle 10 stretches out downwards from the axle sleeve 11 in the valve casing 6 lower end center holes, and inserts in the coal gas common rail pipe 23.The spool of installation bottom 14 of sliding axle 10, the top mounting spring 13 of spool 14, valve seat 15 is installed on the following tube wall of coal gas common rail pipe 23.The lower end of valve casing 6 is installed on the upper tube wall of coal gas common rail pipe 23 by lower fixed seat 12.
Claims (1)
1. gas engine supercharging multi-point injection controlling method along separate routes, it is characterized in that air, coal gas shunt supercharging and mixture length are: air, coal gas is supercharging along separate routes earlier, again through the cooling of separately intercooler, air is introduced into total inlet pipe then, enter each cylinder intake manifold again, the cooled coal gas of supercharging is earlier through air-gas pressure balance adjustment valve, this pressure balance modulating valve is controlled by the total inlet pipe inner air pressure, make gas pressure and total inlet pipe inner air pressure keep balance, coal gas passes through closure more then, closure is subjected to engine governor control, coal gas comes out to enter the coal gas common rail pipe by closure again, enter in each cylinder through electric controlled regulating valve again, in the aspirating stroke of each cylinder, air in its intake manifold and the coal gas in the coal gas common rail pipe together are inhaled in this cylinder, and finish mixing in this cylinder, and in other stroke, do not have the high concentration mixed gas in the total inlet pipe; Automatically controlled automatic regulating system is formed one by combustion sensor, process control machine and electric controlled regulating valve and is regulated closed-loop system automatically, provide burning signal in each cylinder as feedback signal by combustion sensor, by process control machine the feedback signal number of each cylinder is gathered and handled, and be converted into electrical signal, compare with setting value again, produce a difference electrical signal, with electric controlled regulating valve as actuator, under the difference action of electric signals, the aperture of electric controlled regulating valve increases or reduces, and makes the gas flow that advances of each cylinder correspondingly increase or reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031391435A CN1279277C (en) | 2003-08-20 | 2003-08-20 | Shunt pressurizing and multiple-point jetting control method for gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031391435A CN1279277C (en) | 2003-08-20 | 2003-08-20 | Shunt pressurizing and multiple-point jetting control method for gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487185A CN1487185A (en) | 2004-04-07 |
| CN1279277C true CN1279277C (en) | 2006-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031391435A Expired - Fee Related CN1279277C (en) | 2003-08-20 | 2003-08-20 | Shunt pressurizing and multiple-point jetting control method for gas engine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312734A (en) * | 2011-09-09 | 2012-01-11 | 重庆磐达机械有限公司 | Multi-spot electrojet device for gas generator |
| CN109723537B (en) * | 2019-01-09 | 2022-05-06 | 陕西柴油机重工有限公司 | Low-calorific-value gas efficient pressurizing injection rarefied combustion comprehensive control system and method |
| CN109958528A (en) * | 2019-04-08 | 2019-07-02 | 西安航天基地思普动力科技有限公司 | A kind of double pressurized cylinders of gas engine are interior to mix regulation device and its regulation method |
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| CN1487185A (en) | 2004-04-07 |
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Granted publication date: 20061011 Termination date: 20120820 |