CN100363608C - Device and method for quick gas supply when diesel engine accelerating - Google Patents
Device and method for quick gas supply when diesel engine accelerating Download PDFInfo
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- CN100363608C CN100363608C CNB200510016269XA CN200510016269A CN100363608C CN 100363608 C CN100363608 C CN 100363608C CN B200510016269X A CNB200510016269X A CN B200510016269XA CN 200510016269 A CN200510016269 A CN 200510016269A CN 100363608 C CN100363608 C CN 100363608C
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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
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Abstract
The present invention discloses a device and a method for rapid air supplement of a diesel engine, which belong to the technique for eliminating the smoke intensity discharge acceleration of diesel engines. The device has the structure that an air supplement pipe parallel to an air intake pipe is provided with an electric air compressor at the back of a filter of the air intake pipe of a non supercharged diesel engine, and a supercharged diesel engine has the structure that an air supplement pipe parallel to an air intake pipe is provided with an electric air compressor. A series device or a parallel device is formed by the electric air compressor and an exhaust gas turbocharger. The method comprises the following steps: after an acceleration response sensor on an acceleration pedal of a diesel engine receives an acceleration signal, the electric air compressor is started up by an electronic control unit; the electric air compressor singly carries out the rapid air supplement to the air induction of the diesel engine, or the electric air compressor connected with the exhaust gas turbocharger in series or in parallel carries out the rapid air supplement to the air induction of the diesel engine. The present invention has the advantages of simple device structure, easy realization, low cost and reliable operation process. Adopting the technique, the soot discharge of the diesel engine is 30% lower than an original machine.
Description
Technical field
The present invention relates to a kind of device and method of realizing quick gas supply when diesel engine accelerating, belong to and reduce diesel engine accelerating smoke emission technology.
Background technique
Supercharging technology is the important measures that improve diesel engine performance, and increasing diesel engine using supercharging technology improves fuel economy on the one hand, reduces exhaust pollution on the other hand.But supercharged diesel engine because the supplying fuel speed of the compressor air inlet machine speed of response of pressurized machine and Injection Pump is asynchronous, causes accelerating process to smolder seriously when quickening.The diesel engine of the used for buses that especially needs frequent starting and quicken is all the more so.It is a severe contamination to ambient air quality not only that acceleration is smoldered, and What is more, and smoldering of overrich not only can not make acceleration increase, even because too dense the causing on the contrary of fuel oil quickened deterioration.In addition, because the cigarette that is emitted is the diesel oil of uncombusted, also be a kind of waste to fuel.The meaning of smoldering when therefore, reducing diesel-oil vehicle starting acceleration is very big.Solving the basic way of quickening to smolder at present in the world has: (one) adopts high-pressure injection and injection system is carried out electronic control on diesel engine.This way technical difficulty is big, and domestic being difficult at present realizes.(2) the high-quality diesel oil of the ultralow sulphur content of employing, but the diesel quality of domestic supply at present is difficult to up to standard.(3) increase the dress fuel limit device in the diesel engine fuel oil pump, supply rate is to be complementary with air when quickening for slowing oil, and the negative effect of this measure is that the time for acceleration prolongs.(4) adopt multistage pressurization system.The method is fine to improving diesel engine acceleration performance effect, but system is very complicated, and manufacture cost is high, only uses on the senior or purpose-built vehicle at some at present.Domestic still do not have see good solution.In view of the foregoing, for accomplishing the diesel engine smokeless combustion, and the petroleum resources of saves valuable, improve and to improve the combustion technology of diesel engine acceleration performance very important.
Summary of the invention
The object of the present invention is to provide a kind of apparatus and method of quick gas supply when diesel engine accelerating.This accelerating process making-up air device is simple in structure, and its method operation is reliable, and the tonifying Qi technology can effectively reduce the discharging of the smoke intensity of diesel engine accelerating.
The present invention is realized by following technical proposals.A kind of device of diesel engine accelerating tonifying Qi, for unsupercharged motor, it is characterized in that: this device is included in behind the air-strainer and on the suction tude A normally open solenoid valve 2 is set, and after filter outlet and normally open solenoid valve blowdown pipe B in parallel.Dynamoelectric compressor 5 is set on this blowdown pipe, and it is driven by high-speed brushless motor 6, and the high-speed brushless motor is by control unit 9 and the 10 control runnings of throttle acceleration sensor.
For supercharged engine, a kind of making-up air device, it is characterized in that: this device is included on the suction tude A between air-strainer and the exhaust gas turbocharge gas normally open solenoid valve is set, and before air-strainer is exported to exhaust-gas turbocharger on suction tude A blowdown pipe B in parallel.A dynamoelectric compressor 5 is set on this blowdown pipe, and it is driven by high-speed brushless motor 6, and the high-speed brushless motor is by control unit 9 and the 10 control runnings of throttle acceleration sensor.
For supercharged engine, another kind of making-up air device is characterized in that: this device is included in the suction tude A of air-strainer outlet port to exhaust-gas turbocharger and goes up blowdown pipe B in parallel.A dynamoelectric compressor is set on this blowdown pipe, and be provided with on the blowdown pipe after it pressure controlled valve 2 '.Dynamoelectric compressor 5 is driven by high-speed brushless motor 6, and the high-speed brushless motor is by control unit 9 and throttle acceleration sensor control running.
Adopt above-mentioned quick making-up air device to realize the method that motor starting accelerating process is carried out quick tonifying Qi, it is characterized in that comprising following specific practice:
1. non-supercharged engine is behind perception signal for faster on the gas pedal, by ECU (Electrical Control Unit) 9, to 6 power supplies of high-speed brushless motor, connect control suction tude electromagnetic valve 2 simultaneously, close suction tude A, engine charge is through blowdown pipe B, by dynamoelectric compressor 5 to the engine chamber air feed.In case accelerating process finishes, just cut off the power supply of control valve 2 on dynamoelectric compressor and the suction tude at once, the suction tude control valve resets, and engine charge directly passes through suction tude A to the engine chamber air feed.
2. supercharged engine is when dynamoelectric compressor 5 places after the air-strainer 1 on the blowdown pipe before the exhaust-gas turbocharger.Behind perception signal for faster on the gas pedal, pass through ECU (Electrical Control Unit), to 6 power supplies of high-speed brushless motor, connect control suction tude electromagnetic valve 2 simultaneously, close suction tude A, engine charge is from blowdown pipe B, through dynamoelectric compressor 5 and exhaust-gas turbocharger gas compressor in turn after the supercharging, to the engine chamber air feed.In case accelerating process finishes, just cut off the power supply of control valve on dynamoelectric compressor and the suction tude at once, the suction tude control valve resets, and engine charge directly passes through suction tude A to the engine chamber air feed.
3. supercharged engine is when dynamoelectric compressor 5 places on the blowdown pipe of air-strainer 1 outlet port after exhaust-gas turbocharger.Behind perception signal for faster on the gas pedal, by ECU (Electrical Control Unit) 9, to 6 power supplies of high-speed brushless motor, when dynamoelectric compressor 5 outlet pressures surpass the outlet pressure of exhaust-gas turbocharger gas compressor, open pressure controlled valve 2 ', engine charge enters suction tude A and blowdown pipe B simultaneously, respectively after the supercharging simultaneously of exhaust-gas turbocharger and dynamoelectric compressor to the engine chamber air feed.Accelerating process finishes, and just cuts off the power supply of dynamoelectric compressor and suction tude upward pressure control valve at once, and the suction tude control valve resets, and engine charge directly passes through suction tude A, by after the exhaust-gas turbocharger supercharging to the engine chamber air feed.
The invention has the advantages that, under the starting accelerating mode, on supercharged diesel engine with dynamoelectric compressor and turbosupercharger simultaneously to the burning chamber of diesel engine air feed, to guarantee the supply of capacity air in the accelerating process, reach the purpose that reduces soot.After adopting the quick air compensating system of acceleration, the former machine of the carbon smoke exhaust of diesel engine reduces more than 30%, makes every effort to accomplish quicken smokeless.Same this dynamoelectric compressor system also can be applicable to naturally aspirated Diesel, reaches good effect.
Adopt the diesel engine of device of the present invention, can reequip easily, be easy to realize that cost is low existing type, not only can improve the power character requirement of booster response, improve its instantaneous emission quality, and can be energy-conservation, the difficulty that former machine reaches stricter emission standard reduced; To type newly developed, can carry out the combined optimization design with the diesel engine air supply system, reach the double action that reduces cost and improve emissions quality.
Description of drawings
Fig. 1 is the structured flowchart of the present invention that is applied on the naturally aspirated Diesel.
Fig. 2 is for being applied to cascaded structure block diagram of the present invention on the supercharged diesel engine.
Fig. 3 is for being applied to parallel-connection structure block diagram of the present invention on the supercharged diesel engine.
Fig. 4 is the structural representation of electric drive pressure mechanism of qi.
Fig. 5 is the control strategy flow chart.
Among the figure: 1 is air-strainer, and 2 is the normally open solenoid valve door, 2 ' be pressure controlled valve, 3 is exhaust gas turbine, and 4 is the exhaust-gas turbocharger gas compressor, and 5 is dynamoelectric compressor, 6 is the high-speed brushless motor, and 7 is storage battery, and 8 is generator, 9 is control unit, 10 is the throttle acceleration sensor, 11 silencing apparatuss, and 12 is connecting flange, 13 is locking nut, and 14 is compressor impeller.
Embodiment
Shown in Fig. 1,2,3,4, the present invention receives the control unit 9 of this signal by the acceleration responsive sensor 10 that is arranged on the diesel engine throttle pedal, the normally open solenoid valve door 2 of control suction tude, dynamoelectric compressor 5, high-speed brushless motor 6 compositions such as grade of drive pressure mechanism of qi.Dynamoelectric compressor is linked to each other with gas compressor 5 by connecting flange 12 location by high-speed brushless motor 6.The high-speed brushless electric machine main shaft directly and drive the rotating shaft locking nut rigid joint of compressor impeller 14 reduces velocity lag and fast poor.The power supply of high-speed brushless motor is a storage battery 7, also can be the generator on the diesel engine 8.
Under the steady state condition, the exhaust-gas turbocharger on the motor can provide enough pressure, and waste gas makes 4 rotations of exhaust-gas turbocharger gas compressor through outlet pipe, drives the compressor impeller rotation on the exhaust-gas turbocharger.Electromagnetic valve 2 on the suction tude A is a normally open, and air directly enters suction tude A after filtering through filter cleaner 1, enters cylinder by the exhaust-gas turbocharger gas compressor.When accelerating mode, because the hysteresis of exhaust gas turbine makes the fuel that enters cylinder unreasonable with the ratio of air, so the startup dynamoelectric compressor carries out tonifying Qi.
As shown in Figure 1, dynamoelectric compressor can be installed in independent use the on the non-supercharged engine.When accelerating mode, throttle acceleration sensor 10 receives signal for faster, and passes the signal to control unit 9.9 pairs of acceleration of control unit are judged, close electromagnetic valve 2 and start high-speed brushless motor 6 when surpassing the setting thresholding, enter blowdown pipe B through the filter cleaner filtered air, directly enter the firing chamber of motor through the gas compressor 5 of high-speed brushless motor 6 drivings.
As shown in Figure 2, on supercharged engine, electric drive pressure mechanism of qi is connected with exhaust-gas turbocharger.When accelerating mode, throttle acceleration sensor 10 receives signal for faster, and transfers signals to control unit 9.9 pairs of acceleration of control unit are judged, close electromagnetic valve 2 and start high-speed brushless motor 6 when surpassing the setting thresholding.Enter blowdown pipe B through the filter filtered air, the gas compressor 5 that drives through high-speed brushless motor 6 enters tracheae C, enters the firing chamber of motor more in turn after the supercharging through the gas compressor 4 of exhaust-gas turbocharger.
As shown in Figure 3, when dynamoelectric compressor and exhaust-gas turbocharger parallel connection are used, setting pressure control valve 2 on the D tracheae behind the dynamoelectric compressor '.When accelerating mode, throttle acceleration sensor 10 receives signal for faster, and transfers signals to control unit 9.9 pairs of acceleration of control unit are judged, when surpassing the setting thresholding, start high-speed brushless motor 6, when the dynamoelectric compressor outlet pressure surpasses the outlet pressure of exhaust-gas turbocharger gas compressor, open pressure controlled valve 2 ', otherwise close this valve, be back to the D tracheae with the air inlet that prevents suction tude A.
Behind the dynamoelectric compressor running certain hour, accelerating process finishes, just cut off at once dynamoelectric compressor and electromagnetic valve 2 or pressure controlled valve 2 ' power supply, suction tude electromagnetic valve 2 or pressure controlled valve 2 ' reset, engine charge is through suction tude A, and this moment, only exhaust-gas turbocharger was given the motor air feed.After adopting the quick air compensating system of acceleration, capacity air supply when having guaranteed acceleration reaches the purpose that reduces soot.
Above-mentioned operating process can realize that control strategy as shown in Figure 5 by Single-chip Controlling.
Embodiment:
1. the suction tude of carrying out on the directly jetting turbo charging h type engine h as shown in Figure 2 arranges that promptly dynamoelectric compressor is installed between former diesel oil turbosupercharger and the air-strainer.Dynamoelectric compressor changes scooter 24000r/min by GWD1500 high-speed brushless motor driving.Under certain permanent torque, at the uniform velocity drive throttle actuator pulling throttle line to refueling the direction motion by stepper motor, rotating speed is increased, change the stepper motor stepped intervals time, can change relative speed variation, the acceleration sensor sense acceleration is installed at the gas pedal place.ECU (Electrical Control Unit) mainly is made up of the MS-51 single-chip microcomputer, can gather signals such as engine speed, moment of torsion, acceleration, and judges the engine operation operating mode thus, sends the actuating signal of dynamoelectric compressor.The operating time of dynamoelectric compressor is set at 15 seconds.
2. working as torque is 95N.m, and rotating speed accelerates to 2000r/min from 700r/min, and dynamoelectric compressor makes former machine smoke intensity FSU value 4.30 be reduced to 2.83 in this process work, and the decline ratio is 34.2%.
Claims (6)
1. the device of a quick gas supply when diesel engine accelerating, to naturally aspirated Diesel, it is characterized in that: this device is included in behind the air-strainer and on the suction tude A normally open solenoid valve (2) is set, and after filter outlet and normally open solenoid valve blowdown pipe B in parallel, dynamoelectric compressor (5) is set on this blowdown pipe, it is driven by high-speed brushless motor (6), and the high-speed brushless motor is by control unit (9) and throttle acceleration sensor (10) control running.
2. the device of a quick gas supply when diesel engine accelerating, for supercharged engine, it is characterized in that: this device is included in a normally open solenoid valve is set on the suction tude A between air-strainer and the exhaust-gas turbocharger, and before air-strainer is exported to exhaust-gas turbocharger on suction tude A blowdown pipe B in parallel, a dynamoelectric compressor (5) is set on this blowdown pipe, it is driven by high-speed brushless motor (6), and the high-speed brushless motor is by control unit (9) and throttle acceleration sensor (10) control running.
3. the device of a quick gas supply when diesel engine accelerating, for supercharged engine, it is characterized in that: this device is included in the suction tude A of air-strainer outlet port to exhaust-gas turbocharger and goes up blowdown pipe B in parallel, a dynamoelectric compressor is set on this blowdown pipe, and a pressure controlled valve (2 ') is set on the blowdown pipe after it, dynamoelectric compressor (5) is driven by high-speed brushless motor (6), and the high-speed brushless motor is by control unit (9) and throttle acceleration sensor control running.
4. method that the device that adopts the described quick gas supply when diesel engine accelerating of claim 1 carries out tonifying Qi, it is characterized in that comprising following specific practice: behind perception signal for faster on the gas pedal, by ECU (Electrical Control Unit) (9), power to high-speed brushless motor (6), connect control suction tude electromagnetic valve (2) simultaneously, close suction tude A, engine charge is through blowdown pipe B, by dynamoelectric compressor (5) to the engine chamber air feed, in case accelerating process finishes, just cut off the power supply of control valve on dynamoelectric compressor and the suction tude (2) at once, the suction tude control valve resets, and engine charge directly passes through suction tude A to the engine chamber air feed.
5. method that the device that adopts the described quick gas supply when diesel engine accelerating of claim 2 carries out tonifying Qi, it is characterized in that comprising following specific practice: dynamoelectric compressor (5) places air-strainer (1) afterwards on the blowdown pipe before the exhaust-gas turbocharger, behind perception signal for faster on the gas pedal, pass through ECU (Electrical Control Unit), power to high-speed brushless motor (6), connect control suction tude electromagnetic valve (2) simultaneously, close suction tude A, engine charge is from blowdown pipe B, through dynamoelectric compressor (5) and exhaust-gas turbocharger gas compressor in turn after the supercharging, to the engine chamber air feed, in case accelerating process finishes, just cut off the power supply of control valve on dynamoelectric compressor and the suction tude at once, the suction tude control valve resets, and engine charge directly passes through suction tude A to the engine chamber air feed.
6. method that the device that adopts the described quick gas supply when diesel engine accelerating of claim 3 carries out tonifying Qi, it is characterized in that comprising following specific practice: dynamoelectric compressor (5) places on the blowdown pipe of air-strainer (1) outlet port after exhaust-gas turbocharger, behind perception signal for faster on the gas pedal, by ECU (Electrical Control Unit) (9), power to high-speed brushless motor (6), when surpassing the outlet pressure of exhaust-gas turbocharger gas compressor, opens dynamoelectric compressor (5) outlet pressure pressure controlled valve (2 '), engine charge enters suction tude A and blowdown pipe B simultaneously, respectively after the supercharging simultaneously of exhaust-gas turbocharger and dynamoelectric compressor to the engine chamber air feed, accelerating process finishes, just cut off the power supply of dynamoelectric compressor and suction tude upward pressure control valve at once, the suction tude control valve resets, engine charge directly passes through suction tude A, by after the exhaust-gas turbocharger supercharging to the engine chamber air feed.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510016269XA CN100363608C (en) | 2005-03-07 | 2005-03-07 | Device and method for quick gas supply when diesel engine accelerating |
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| CNB200510016269XA CN100363608C (en) | 2005-03-07 | 2005-03-07 | Device and method for quick gas supply when diesel engine accelerating |
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| CN100363608C true CN100363608C (en) | 2008-01-23 |
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| CN104832275B (en) * | 2014-12-20 | 2017-11-03 | 北汽福田汽车股份有限公司 | Turbocharger torque compensation methods, devices and systems |
| US9890697B2 (en) * | 2016-05-20 | 2018-02-13 | Ford Global Technologies, Llc | Method and system for boost pressure control |
| CN106979066A (en) * | 2017-05-26 | 2017-07-25 | 福州大学 | Hybrid turbine supercharging UTILIZATION OF VESIDUAL HEAT IN improves the experimental rig and method of transient response |
| CN109268317A (en) * | 2018-11-20 | 2019-01-25 | 李桂江 | A kind of jetting type air pressurizing unit |
| CN109458253B (en) * | 2018-12-12 | 2021-05-07 | 中国船舶重工集团公司第七一一研究所 | Air supply system and air supply control method |
| CN112031929B (en) * | 2020-08-31 | 2022-06-28 | 东风商用车有限公司 | Dual-voltage multi-stage supercharging system for engine |
| CN112031925A (en) * | 2020-08-31 | 2020-12-04 | 东风商用车有限公司 | Electric supercharging preposed multistage mixed supercharging system for engine |
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| US4453381A (en) * | 1981-01-13 | 1984-06-12 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Internal combustion engine with an exhaust gas turbocharger |
| CN1207156A (en) * | 1995-11-15 | 1999-02-03 | 涡轮动力系统有限公司 | Charge air systems for four-cycle internal combustion engines |
| US6141965A (en) * | 1995-11-15 | 2000-11-07 | Turbodyne Systems, Inc. | Charge air systems for four-cycle internal combustion engines |
| CN1281530A (en) * | 1997-09-29 | 2001-01-24 | 涡轮动力系统有限公司 | Charge air systems for four-cycle IC engine |
| US20010054287A1 (en) * | 2000-05-11 | 2001-12-27 | Patric Hoecker | Charged internal combustion engine |
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2005
- 2005-03-07 CN CNB200510016269XA patent/CN100363608C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4453381A (en) * | 1981-01-13 | 1984-06-12 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Internal combustion engine with an exhaust gas turbocharger |
| CN1207156A (en) * | 1995-11-15 | 1999-02-03 | 涡轮动力系统有限公司 | Charge air systems for four-cycle internal combustion engines |
| US6141965A (en) * | 1995-11-15 | 2000-11-07 | Turbodyne Systems, Inc. | Charge air systems for four-cycle internal combustion engines |
| CN1281530A (en) * | 1997-09-29 | 2001-01-24 | 涡轮动力系统有限公司 | Charge air systems for four-cycle IC engine |
| US20010054287A1 (en) * | 2000-05-11 | 2001-12-27 | Patric Hoecker | Charged internal combustion engine |
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Effective date of registration: 20090306 Address after: Block B, building 3, No. 801, science and Education City, No. 7, Wu Zhong Road, Wujin District, Jiangsu, Changzhou, China Patentee after: Changzhou Tiandalongcheng Energy-saving Environmental Protection Technology Co., Ltd. Address before: Nankai District Wei Jin Road, Tianjin City No. 92 Patentee before: Tianjin University |
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