CN102278192B - Pulse width modulation valve for controlling boost pressure of turbocharger of gasoline engine - Google Patents
Pulse width modulation valve for controlling boost pressure of turbocharger of gasoline engine Download PDFInfo
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- CN102278192B CN102278192B CN201110189615.XA CN201110189615A CN102278192B CN 102278192 B CN102278192 B CN 102278192B CN 201110189615 A CN201110189615 A CN 201110189615A CN 102278192 B CN102278192 B CN 102278192B
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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 invention discloses a pulse width modulation valve for controlling the boost pressure of a turbocharger of a gasoline engine. The pulse width modulation valve consists of a shell, a coil framework, a first air path joint, a copper sleeve, a movable armature, a wear-resistant rubber plug, a spring, a secondary bracket, a coil and a main bracket, wherein the shell is provided with an electrical signal joint. The coil is wound around the coil framework, the shell, the coil framework, the secondary bracket and the main bracket are integrated through injection molding, a coil joint of the coil framework is welded with the electric signal joint of the shell, and the secondary bracket and the main bracket are arranged at two ends of a combination part of the shell and the coil framework. During assembly, the movable armature with the wear-resistant rubber plug is arranged in a mounting hole of the first air path joint of the coil framework, and the spring is arranged in a central air hole on the movable armature. The first air path joint with the copper sleeve is arranged in the mounting hole of the first air path joint on the coil framework and is fixedly connected with a reverse tapered concave ring slot on the inner wall of the mounting hole of the first air path joint through a reverse tapered concave ring of the external circle in an interference fit manner.
Description
Technical field
The present invention relates to the turbocharger supercharged pressure techniques of petrol engine field, particularly a kind of for the turbocharger supercharged pressure controlled pulse width modulation valve of petrol engine.
Background technique
In order to meet more and more stricter emission standard, Automobile Enterprises need to constantly carry out technological improvement, turbosupercharger is to be diesel oil, supporting environmental protection, the energy-saving high-tech product of gasoline power plant, it can improve the working condition of motor well, thereby meet high-level emission request, supercharging is that motor meets more maximum discharge standard and the technology that must take.
Traditional supercharged engine is that turbosupercharger is appended on available engine, to improve output power, in order to improve low engine speed performance and acceleration, prevents the running hypervelocity of turbosupercharger, and turbosupercharger has adopted exhaust gas bypass technology.
Adopt the advantage of exhaust gas bypass technology to be: the motor valve closing of exitting in the time of low speed and high pulling torque operating mode, make full use of exhaust energy and improve the rotating speed of turbosupercharger, ensure required air quantity and the pressure ratio of motor; The motor valve opening by-passing part exhaust energy of exitting in the time of high rotating speed, declared working condition, ensures that turbosupercharger does not exceed the speed limit.
Diesel engine be compression-ignited, compression ratio is higher than petrol engine, engine speed is in the matched well of the 700rpm～3500 rpm turbosupercharger that used exhaust gas bypass technical guarantee and motor.
Petrol engine is that Spark ignition type, compression ratio are in 8～12 left and right; Petrolic rotating speed is at 700rpm～6500 rpm, and air mass flow excursion is large, and after petrol engine supercharging, because suction pressure and temperature all raise, this makes to compress at the end temperature and raises, and makes tendency to detonate aggravation.Adopt turbosupercharging to cause in the factors of pinking at petrol engine, having the greatest impact of boost pressure, therefore, must control boost pressure.Present stage, maximal pressure ratio is controlled at 1.8～2.0 left and right can effectively suppress pinking.
After petrol engine turbosupercharging, the subject matter point that directly adopts exhaust gas bypass technology to control appearance to boost pressure is: adopt exhaust gas bypass technology to be approximately linearity control mode to the control of boost pressure, boost pressure progressively raises from the operating mode of low speed point, torque point, rated point with motor.Petrol engine causes pinking for preventing that boost pressure is too high, and maximal pressure ratio is controlled at 1.8～2.0 left and right, and the pretightening force of final controlling element is on the low side; In demarcation, the boost pressure of torque point Part load can approach with rated point boost pressure, even high than rated point boost pressure.Exhaust gas bypass technology can not be carried out Flexible Control to turbo boost pressure according to engine design point, can not meet the torque demand of whole operating point, can only reduce engine power performance, economic index, affects the popularization of turbocharging technology on petrol engine.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of for the turbocharger supercharged pressure controlled pulse width modulation valve of petrol engine.
Technological scheme of the present invention is: a kind of for the turbocharger supercharged pressure controlled pulse width modulation valve of petrol engine, it is made up of the shell with electric signal connector, coil rack, the first gas path joint, copper sheathing, moving armature, abrasive rubber plug, spring, assistant support, coil and master bracket.On coil rack, be provided with the first gas path joint mounting hole, the second gas path joint and the 3rd gas path joint, the second gas path joint, the 3rd gas path joint communicate with the first gas path joint mounting hole.On the inwall of the first gas path joint mounting hole and the second gas path joint, the 3rd gas path joint connecting part, be provided with a plurality of air drains, a plurality of air drains are evenly distributed on the inwall of the first gas path joint mounting hole.On the inwall of the first gas path joint mounting hole, be provided with the inverted cone concave ring groove that two circles match with the inverted cone bulge loop on the first gas path joint cylindrical.Coil winding is on coil rack, shell, coil rack, assistant support and master bracket are by being injected into one, electric signal connector on coil connectors and shell on coil rack welds together, assistant support and master bracket are located at the two ends of shell and coil rack connecting part, work to increase structural strength.One end of the first gas path joint is provided with a copper sheathing mounting hole, and copper sheathing embeds in the copper sheathing mounting hole on the first gas path joint by interference fit.On the cylindrical of the first gas path joint, be provided with two circle inverted cone bulge loops, inverted cone bulge loop matches with the inverted cone concave ring groove on the first gas path joint mounting hole inwall on coil rack.Moving armature is provided with centre porosity, and the cylindrical of moving armature is provided with a circle annular gas tank, and annular gas tank is provided with a plurality of pores, and pore is evenly distributed on annular gas tank, and communicates with centre porosity.One end of moving armature is provided with an abrasive rubber plug mounting hole, and abrasive rubber plug is fixed in the abrasive rubber plug mounting hole on moving armature by injection moulding.
When assembling, first by the first gas path joint mounting hole being arranged on the moving armature of abrasive rubber plug on coil rack, in the centre porosity of spring fitting on moving armature.Be arranged in the first gas path joint mounting hole on coil rack with the first gas path joint of copper sheathing, and utilize the inverted cone concave ring groove on inverted cone bulge loop and the first gas path joint mounting hole inwall on its cylindrical securely to link together by interference fit.Now, one end of spring withstands on the bottom in moving armature centre porosity, and the other end withstands on the outer end of the first gas path joint.
The present invention compared with prior art has following features:
Be connected by pulse width modulation valve power on signal joint and Engine ECU output signal, utilize input pulse to adjust the duty cycle signals of wide valve, control impuls is adjusted the boost pressure size of wide valve the second gas path joint passage output, the working pressure flexibility that realizes final controlling element is adjustable, reach the adjustable of exhaust gas bypass amount, the rotating speed of controlling turbosupercharger, finally reaches the flexibility adjustment of boost pressure, has effectively taken into account power performance and the economic performance of petrol engine motor under each operating mode.
Below in conjunction with the drawings and specific embodiments, detailed structure of the present invention is further described.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is the A-A sectional view in accompanying drawing 1;
The structural representation that accompanying drawing 3 is coil rack;
Accompanying drawing 4 is the B-B sectional view in accompanying drawing 3;
The structural representation that accompanying drawing 5 is moving armature;
Accompanying drawing 7 is the structural representation of the first gas path joint;
Accompanying drawing 8 is the D-D sectional view in accompanying drawing 7;
Accompanying drawing 10 is under different duty condition, and the second gas path joint passage delivery pressure curve synoptic diagram is longitudinally the pressure of the second gas path joint passage output in accompanying drawing, is laterally dutycycle.
Embodiment
A kind of for the turbocharger supercharged pressure controlled pulse width modulation valve of petrol engine, it is made up of the shell 1 with electric signal connector 1-1, coil rack 2, the first gas path joint 3, copper sheathing 4, moving armature 5, abrasive rubber plug 6, spring 7, assistant support 8, coil 9 and master bracket 10.On coil rack 2, be provided with the first gas path joint mounting hole 2-2, the second gas path joint 2-5 and the 3rd gas path joint 2-4, the second gas path joint 2-5, the 3rd gas path joint 2-4 communicate with the first gas path joint mounting hole 2-2.On the inwall of the first gas path joint mounting hole 2-2 and the second gas path joint 2-5, the 3rd gas path joint 2-4 connecting part, be provided with six articles of air drain 2-1, six air drain 2-1 are evenly distributed on the inwall of the first gas path joint mounting hole 2-2.On the inwall of the first gas path joint mounting hole 2-2, be provided with the inverted cone concave ring groove 2-3 that two circles match with the inverted cone bulge loop on the first gas path joint 3 cylindricals.Coil 9 is wound on coil rack 2, shell 1, coil rack 2, assistant support 8 and master bracket 10 are by being injected into one, electric signal connector 1-1 on coil 9 joints and shell 1 on coil rack 2 welds together, assistant support 8 and master bracket 10 are located at the two ends of shell 1 and coil rack 2 connecting parts, work to increase structural strength.One end of the first gas path joint 3 is provided with a copper sheathing mounting hole 3-2, and copper sheathing 4 embeds in the copper sheathing mounting hole 3-2 on the first gas path joint 3 by interference fit.On the cylindrical of the first gas path joint 3, be provided with two circle inverted cone bulge loop 3-1, inverted cone bulge loop 3-1 matches with the inverted cone concave ring groove 2-3 on the first gas path joint mounting hole 2-2 inwall on coil rack 2.Moving armature 5 is provided with centre porosity 5-4, and the cylindrical of moving armature 5 is provided with a circle annular gas tank 5-1, and annular gas tank 5-1 is provided with six pore 5-2, and it is upper that pore 5-2 is evenly distributed on annular gas tank 5-1, and communicate with centre porosity 5-4.One end of moving armature 5 is provided with an abrasive rubber plug mounting hole 5-3, and abrasive rubber plug 6 is fixed in the abrasive rubber plug mounting hole 5-3 on moving armature 5 by injection moulding.
When assembling, first the moving armature with abrasive rubber plug 65 is arranged in the first gas path joint mounting hole 2-2 on coil rack 2, spring 7 is arranged in the centre porosity 5-4 on moving armature 5.Be arranged in the first gas path joint mounting hole 2-2 on coil rack 2 with the first gas path joint 3 of copper sheathing 4, and utilize the inverted cone concave ring groove 2-3 on inverted cone bulge loop 3-1 and the first gas path joint mounting hole 2-2 inwall on its cylindrical securely to link together by interference fit.Now, one end of spring 7 withstands on the bottom in moving armature 5 centre porosity 5-4, and the other end withstands on the outer end of the first gas path joint 3.
After assembling, because moving armature 5 quality are light, and be furnished with equably pore 5-2 and annular gas tank 5-1 in border, coil rack 2 is also being provided with air drain 2-1 with the annular gas tank 5-1 opposite position of moving armature 5, and gas flow forms air film in the time of pore 5-2, air drain 2-1, reduce surface friction drag, responsiveness is fast, makes moving armature 5 in the course of the work, and gas circuit is unobstructed, can not produce extra vapour lock because residing position is different, ensure the stability of pulse width modulation valve work.Abrasive rubber plug 6 tools have good wearability, and pulse width modulation valve are worn and torn in long-term use less, have ensured working life.Copper sheathing 4 has not only played and has reduced the wearing and tearing to abrasive rubber plug 6, the sealing while also having ensured pulse width modulation valve work and between abrasive rubber plug 6.
The pulse width modulation valve that the present embodiment provides is a two-position three-way valve, has the first gas path joint 3, the second gas path joint 2-5, tri-air-path interfaces of the 3rd gas path joint 2-4 and an electric signal connector 1-1 on valve.When use, the first gas path joint 3 and turbocharger air compressor air outlet UNICOM, the second gas path joint 2-5 and final controlling element suction port UNICOM, the 3rd gas path joint 2-4 and turbocharger air compressor suction port UNICOM.Electric signal connector 1-1 and Engine ECU output signal are connected, utilize input pulse to adjust the duty cycle signals of wide valve, control impuls is adjusted the boost pressure size of wide valve the second gas path joint 2-5 passage output, the working pressure flexibility that realizes final controlling element is adjustable, reach the adjustable of exhaust gas bypass amount, the rotating speed of controlling turbosupercharger, finally reaches the flexibility adjustment of boost pressure, has effectively taken into account power performance and the economic performance of petrol engine under each operating mode.
The pulse width modulation valve working principle that the present embodiment provides is as follows:
In the time that pulse width modulation valve duty cycle signals is 0%: under the double action of spring 7 and gas compressor air outlet gas, moving armature 5 drives abrasive rubber plug 6 that the 3rd gas path joint 2-4 passage is stopped up.Now input annular gas tank 5-1, air drain 2-1 coil rack 2 on of gas flow on pore 5-2, the moving armature 5 of the first gas path joint 3 passages, moving armature 5 borders, the first gas path joint 3 passages and the second gas path joint 2-5 passage UNICOM, the control of turbocharger air compressor boost pressure is to enter final controlling element by the first gas path joint 3 from the second gas path joint 2-5, promote final controlling element push rod stroke larger, now, venting valve opening is larger, and bypass exhausted air quantity is larger.
In the time that pulse width modulation valve duty cycle signals is 100%: moving armature 5, under the magnetic force of coil 9, overcomes the dual resistance of spring 7 and gas compressor air outlet gas, drive abrasive rubber plug 6 that the first gas path joint 3 passages are stopped up.Now, the second gas path joint 2-5 passage and the 3rd gas path joint 2-5 passage UNICOM, original pressurization gas in final controlling element, releases by the second gas path joint 2-5 and the 3rd gas path joint 2-5, final controlling element push rod return, now, and venting valve closing, waste gas is bypass not.
In the time that pulse width modulation valve duty cycle signals is intermediate value, moving armature 5 is according to duty cycle signals, under the compound action of the magnetic force of coil 9, spring 7 elastic force, gas compressor air outlet gas pressure, moving armature 5 is with the frequency reciprocating vibration motion of 32HZ, makes the pressurization gas of the turbocharger air compressor outlet of the first gas path joint 3 pro rata distribute the second gas path joint 2-5, enters final controlling element, promoting final controlling element push rod moves, now, venting valve opening is moderate, by-passing part waste gas.
In the time that the first gas path joint 3 incoming pressures are definite value, utilize input pulse to adjust the duty cycle signals of wide valve, the boost pressure that can control the second gas path joint 2-5 output is the arbitrary value that is less than or equal to this definite value, the working pressure flexibility that realizes final controlling element is adjustable, reach the adjustable of exhaust gas bypass amount, the rotating speed of controlling turbosupercharger, finally reaches the flexibility adjustment of boost pressure, has effectively taken into account power performance and the economic performance of petrol engine under each operating mode.
Claims (2)
1. one kind for the turbocharger supercharged pressure controlled pulse width modulation valve of petrol engine, it is characterized in that: described pulse width modulation valve is a two-position three-way valve on valve, having the first gas path joint, the second gas path joint, three air-path interfaces of the 3rd gas path joint and an electric signal connector; The first gas path joint and turbocharger air compressor air outlet UNICOM, the second gas path joint and final controlling element suction port UNICOM, the 3rd gas path joint and turbocharger air compressor suction port UNICOM, electric signal connector and Engine ECU output signal are connected, utilize input pulse to adjust the duty cycle signals of wide valve, control impuls is adjusted the boost pressure size of wide valve the second gas path joint passage output;
In the time that pulse width modulation valve duty cycle signals is 0%: under the spring of pulse width modulation valve and the double action of gas compressor air outlet gas, the moving armature of pulse width modulation valve drives abrasive rubber plug that the 3rd gas path joint passage is stopped up, now input gas flow through the first gas path joint passage, the pore of moving armature border, annular gas tank on moving armature, air drain on coil rack, the first gas path joint passage and the second gas path joint passage UNICOM, the control of turbocharger air compressor boost pressure enters final controlling element by the first gas path joint from the second gas path joint, promote final controlling element push rod stroke larger, now, venting valve opening is larger, bypass exhausted air quantity is larger,
In the time that pulse width modulation valve duty cycle signals is 100%: the moving armature of pulse width modulation valve is under the magnetic force of coil, overcome the dual resistance of spring and gas compressor air outlet gas, drive abrasive rubber plug that the first gas path joint passage is stopped up, now the second gas path joint passage and the 3rd gas path joint passage UNICOM, original pressurization gas in final controlling element, releases final controlling element push rod return by the second gas path joint and the 3rd gas path joint, the valve closing of now exitting, waste gas is bypass not;
In the time that pulse width modulation valve duty cycle signals is intermediate value, the moving armature of pulse width modulation valve is according to duty cycle signals, under the compound action of the elastic force of the magnetic force of coil, spring, gas compressor air outlet gas pressure, moving armature is with the frequency reciprocating vibration motion of 32HZ, make the pressurization gas of the turbocharger air compressor outlet of the first gas path joint pro rata distribute the second gas path joint, enter final controlling element, promote final controlling element push rod and move, the valve opening of now exitting is moderate, by-passing part waste gas;
In the time that the first gas path joint incoming pressure is definite value, utilize input pulse to adjust the duty cycle signals of wide valve, the boost pressure that can control the second gas path joint output is the arbitrary value that is less than or equal to this definite value, the working pressure flexibility that realizes final controlling element is adjustable, reach the adjustable of exhaust gas bypass amount, the rotating speed of controlling turbosupercharger, finally reaches the flexibility adjustment of boost pressure, has effectively taken into account power performance and the economic performance of petrol engine under each operating mode;
Above-mentioned pulse width modulation valve comprises with the shell of electric signal connector, coil rack, the first gas path joint, copper sheathing, moving armature, abrasive rubber plug, spring, assistant support, coil and master bracket; On coil rack, be provided with the first gas path joint mounting hole, the second gas path joint and the 3rd gas path joint, the second gas path joint, the 3rd gas path joint communicate with the first gas path joint mounting hole, on the inwall of the first gas path joint mounting hole and the second gas path joint, the 3rd gas path joint connecting part, be provided with a plurality of air drains, a plurality of air drains are evenly distributed on the inwall of the first gas path joint mounting hole, are provided with the inverted cone concave ring groove that two circles match with the inverted cone bulge loop on the first gas path joint cylindrical on the inwall of the first gas path joint mounting hole; Coil winding is on coil rack, shell, coil rack, assistant support and master bracket are by being injected into one, electric signal connector on coil connectors and shell on coil rack welds together, assistant support and master bracket are located at the two ends of shell and coil rack connecting part, work to increase structural strength; One end of the first gas path joint is provided with a copper sheathing mounting hole, copper sheathing embeds in the copper sheathing mounting hole on the first gas path joint by interference fit, on the cylindrical of the first gas path joint, be provided with two circle inverted cone bulge loops, inverted cone bulge loop matches with the inverted cone concave ring groove on the first gas path joint mounting hole inwall on coil rack; Moving armature is provided with centre porosity, the cylindrical of moving armature is provided with a circle annular gas tank, annular gas tank is provided with a plurality of pores, pore is evenly distributed on annular gas tank, and communicate with centre porosity, one end of moving armature is provided with an abrasive rubber plug mounting hole, and abrasive rubber plug is fixed in the abrasive rubber plug mounting hole on moving armature by injection moulding;
When assembling, first by the first gas path joint mounting hole being arranged on the moving armature of abrasive rubber plug on coil rack, in the centre porosity of spring fitting on moving armature, be arranged in the first gas path joint mounting hole on coil rack with the first gas path joint of copper sheathing, and utilize the inverted cone concave ring groove on inverted cone bulge loop and the first gas path joint mounting hole inwall on its cylindrical securely to link together by interference fit, now, one end of spring withstands on the bottom in moving armature centre porosity, and the other end withstands on the outer end of the first gas path joint.
2. one according to claim 1 is for the turbocharger supercharged pressure controlled pulse width modulation valve of petrol engine, it is characterized in that: on the inwall of the first gas path joint mounting hole and the second gas path joint, the 3rd gas path joint connecting part, be provided with six articles of air drains, six air drains are evenly distributed on the inwall of the first gas path joint mounting hole; The annular gas tank of moving armature is provided with six pores, and six pores are evenly distributed on annular gas tank, and communicate with centre porosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189615.XA CN102278192B (en) | 2011-07-07 | 2011-07-07 | Pulse width modulation valve for controlling boost pressure of turbocharger of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189615.XA CN102278192B (en) | 2011-07-07 | 2011-07-07 | Pulse width modulation valve for controlling boost pressure of turbocharger of gasoline engine |
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| CN102278192A CN102278192A (en) | 2011-12-14 |
| CN102278192B true CN102278192B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110189615.XA Active CN102278192B (en) | 2011-07-07 | 2011-07-07 | Pulse width modulation valve for controlling boost pressure of turbocharger of gasoline engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988008486A1 (en) * | 1987-04-20 | 1988-11-03 | Allied-Signal Inc. | Closed loop turbocharger control system with transient wastegate control |
| CN100501202C (en) * | 2003-08-08 | 2009-06-17 | 卡尔弗罗伊登柏格两合公司 | Electromagnetic valve |
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2011
- 2011-07-07 CN CN201110189615.XA patent/CN102278192B/en active Active
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|---|---|---|---|---|
| CN2164488Y (en) * | 1993-06-24 | 1994-05-11 | 中国贵航集团新安机械厂 | Three-way electromagnetic valve |
| CN1376236A (en) * | 1999-07-27 | 2002-10-23 | 联合讯号公司 | Integrally mounted pneumatic solenoid valve for wastegate control |
| CN2528942Y (en) * | 2002-03-22 | 2003-01-01 | 哈尔滨志阳汽车电气股份有限公司 | Variable air intake magnetic valve |
| CN201616356U (en) * | 2010-02-24 | 2010-10-27 | 辽宁省电力有限公司鞍山供电公司 | Electromagnetic blowdown valve used for pneumatic operating mechanism of circuit breaker |
| CN202140165U (en) * | 2011-07-07 | 2012-02-08 | 湖南天雁机械有限责任公司 | Pulse width adjusting valve for controlling boost pressure of turbocharger of gasoline engine |
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