CN103016214A - Diesel engine exhaust air recirculation system - Google Patents
Diesel engine exhaust air recirculation system Download PDFInfo
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- CN103016214A CN103016214A CN2012105310753A CN201210531075A CN103016214A CN 103016214 A CN103016214 A CN 103016214A CN 2012105310753 A CN2012105310753 A CN 2012105310753A CN 201210531075 A CN201210531075 A CN 201210531075A CN 103016214 A CN103016214 A CN 103016214A
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- diesel engine
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- air
- tracheae
- supercharger
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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
A diesel engine exhaust air recirculation system comprises a plurality of air cylinders, a cooler, a Venturi tube and a supercharger; an exhaust pipe is arranged on the gas outlets of the air cylinders, and an intake pipe is arranged on the air inlets of the air cylinders; the diesel engine exhaust air recirculation system is characterized in that the gas outlets of the air cylinders communicate with the cooler via a first gas-collecting pipe, a second gas-collecting pipe and a third gas-collecting pipe; the inlet of the supercharger communicates with the outside via an air admission pipe, and the outlet of the supercharger communicates with the second inlet of the Venturi tube. Since the three gas-collecting pipes are arranged and the supercharger adopts a separate drive mode, the diesel engine exhaust air recirculation system effectively guarantees the amount of collected gas and the uniformity of exhaust gas collected from each air cylinder. Since the supercharger adopts the separate power drive mode, the high-stability operation of the supercharger is effectively guaranteed. Not only is the emission of harmful substances in the exhaust air of a diesel engine reduced, but also the fuel utilization rate is increased.
Description
Technical field
The present invention relates to a kind of diesel engine waste gas recycling system, in particular, relate in particular to a kind of three diesel engine waste gas recycling systems of getting tracheae that are provided with.
Background technique
The noxious emission of motor is a main source that causes pollution of atmosphere, along with the significance of environmental protection problem increases increasingly, reduces the important directions that this target of Engine's Harmful Emission becomes development of engine in the world today.And the consumption of world oil goods rises year by year, and international oil price is high, reduces the discharging of diesel engine harmful matter and the utilization ratio that improves fuel, and it is more and more important to seem.
Gas recirculation system (Exhaust Gas Recirculation) is called for short EGR, is that the sub-fraction of waste gas that diesel engine is produced is sent cylinder again back to.EGR gas since have inertia will the retarded combustion process, thereby that is to say that velocity of combustion will slow down the pressure initiation process that causes in the firing chamber and slow down, main cause that oxynitrides can reduce that Here it is.For example the patent No. is the patent of invention file of CN201110141363.3, it discloses a kind of diesel engine EGR system, it adopts two to get tracheae, and utilize the tail gas of discharging to order about pressure-increasing machine and carry out work, get the problem of tolerance deficiency by putting into practice its existence, and only rely on tail gas to be not enough to order about pressure-increasing machine work.In addition, improve ER EGR Rate total exhaust gas flow is reduced, so total pollutant output quantity will reduce relatively in the toxic emission, but also can improve the utilization ratio of fuel.
Summary of the invention
The present invention provides a kind of three diesel engine waste gas recycling systems of getting tracheae that are provided with in order to overcome the shortcoming of above-mentioned technical problem.
Diesel engine waste gas recycling system of the present invention comprises a plurality of cylinders, cooler, Venturi tube and pressurized machine; Be provided with outlet pipe on the air outlet of cylinder, be provided with suction tude on the suction port; Be provided with one-way valve on the pipeline between cooler and the Venturi tube, the first outlet of Venturi tube is connected with suction tude; Its specialization is: the air outlet of described cylinder is got tracheae, second by first and is got tracheae and the 3rd and get tracheae and be connected with cooler; The import of described pressurized machine enters pipe by air and is connected with the external world, and the outlet of pressurized machine is connected with the second import of Venturi tube.
Cooler is used for the gas that cylinder is discharged is cooled off, and Venturi tube realizes pressurization.The gas part that cylinder is discharged enters in the atmosphere by outlet pipe, and another part is got tracheae, second by first and got tracheae and the 3rd and get tracheae and enter in the cooler, for re-using.Pressurized machine is owing to collect extraneous cavity and supercharging, and the gas of discharging with cylinder in the Venturi tube of sending into after the supercharging is mixed, re-uses for diesel engine, with the content of the N0x in the reduction diesel exhaust.Simultaneously, also can improve the utilization ratio of fuel.
Diesel engine waste gas recycling system of the present invention, the quantity of described cylinder are 6; 6 cylinders are divided into three groups, and three groups of cylinders are got tracheae, second and got tracheae and the 3rd and get tracheae and be connected with first respectively.Adopt three to get tracheae 6 cylinders are got waste gas simultaneously, can guarantee to take out the waste gas of capacity, for recycling.
Diesel engine waste gas recycling system of the present invention is provided with solenoid valve on the outlet of described one-way valve and the pipeline between the Venturi tube.Adopt solenoid valve, can realize the automatic control to the pipeline break-make.
The invention has the beneficial effects as follows: diesel engine waste gas recycling system of the present invention, get tracheae and pressurized machine and adopt the modes that drive separately by arranging three, effectively guaranteed the amount of taking of waste gas, and to the uniformity of each cylinder waste gas mobile phone.Pressure-increasing machine adopts independent motivational drive mode, but has effectively guaranteed the stable high workload of pressure-increasing machine.Diesel engine waste gas recycling system of the present invention has not only reduced the discharging of the harmful matter in the diesel exhaust, but also has put forward the utilization ratio of fuel.
Description of drawings
Fig. 1 is the schematic diagram of diesel engine waste gas recycling system of the present invention.
Among the figure: 1 cylinder, 2 first get tracheae, and 3 second get tracheae, and 4 the 3rd get tracheae, 5 outlet pipes, 6 coolers, 7 one-way valves, 8 solenoid valves, 9 Venturi tubes, 10 suction tude, 11 air enter pipe, 12 pressurized machines.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, provided the schematic diagram of diesel engine waste gas recycling system of the present invention, it comprises that cylinder 1, first gets tracheae 2, second and get tracheae 3, the 3rd and get tracheae 4, outlet pipe 5, cooler 6, one-way valve 7, solenoid valve 8, Venturi tube 9, suction tude 10, air and enter pipe 11 and pressurized machine 12.The quantity of shown cylinder 1 is 6, and the air outlet of cylinder 1 is connected with the external world by outlet pipe 5, in order to waste gas is discharged; Be provided with suction tude 10 on the suction port of cylinder 1, so that the waste gas of air and re-using enters into cylinder 1.
The air outlet of shown first and second cylinder is got tracheae 2 by first and is connected with cooler 6, the air outlet of the 3rd and the 4th cylinder is got tracheae 3 by second and is connected with cooler 6, and the air outlet of the 5th and the 6th cylinder is got tracheae 4 by the 3rd and is connected with cooler 6; Like this, not only realized the mixing of cylinder combustion gas in cooler 6, also realized and the waste gas of more volume can be delivered in the cooler 6, and it is about the same to have guaranteed that waste gas that each cylinder 1 is discharged enters into the volume of cooler 6.Be provided with one-way valve 7 and solenoid valve 8 on the pipeline between cooler 6 and the Venturi tube 9, one-way valve has guaranteed that waste gas can only be flowed in the Venturi tube 9 by cooler 6, and can not reverse flow.
Claims (3)
1. a diesel engine waste gas recycling system comprises a plurality of cylinders (1), cooler (6), Venturi tube (9) and pressurized machine (12); Be provided with outlet pipe (5) on the air outlet of cylinder, be provided with suction tude (10) on the suction port; Be provided with one-way valve (7) on the pipeline between cooler and the Venturi tube, the first outlet of Venturi tube is connected with suction tude (10); It is characterized in that: the air outlet of described cylinder (1) is got tracheae (2), second by first and is got tracheae (3) and the 3rd and get tracheae (4) and be connected with cooler; The import of described pressurized machine (12) enters pipe (11) by air and is connected with the external world, and the outlet of pressurized machine is connected with the second import of Venturi tube.
2. diesel engine waste gas recycling system according to claim 1, it is characterized in that: the quantity of described cylinder (1) is 6; 6 cylinders are divided into three groups, and three groups of cylinders are got tracheae (2), second and got tracheae (3) and the 3rd and get tracheae (4) and be connected with first respectively.
3. diesel engine waste gas recycling system according to claim 1 and 2 is characterized in that: be provided with solenoid valve (8) on the pipeline between the outlet of described one-way valve (7) and the Venturi tube (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105310753A CN103016214A (en) | 2012-12-11 | 2012-12-11 | Diesel engine exhaust air recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105310753A CN103016214A (en) | 2012-12-11 | 2012-12-11 | Diesel engine exhaust air recirculation system |
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| CN103016214A true CN103016214A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105310753A Pending CN103016214A (en) | 2012-12-11 | 2012-12-11 | Diesel engine exhaust air recirculation system |
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| CN (1) | CN103016214A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373229A (en) * | 2013-08-13 | 2015-02-25 | 福特环球技术公司 | Methods and systems for EGR control |
| CN110500209A (en) * | 2019-09-30 | 2019-11-26 | 潍柴动力股份有限公司 | A kind of the monitoring system and monitoring method of EGR check valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1957170A (en) * | 2004-03-05 | 2007-05-02 | 哈尔德克斯水利学公司 | Control scheme for exhaust gas circulation system |
| US20080141757A1 (en) * | 2006-12-15 | 2008-06-19 | Caterpillar Inc. | Onboard method of determining EGR flow rate |
| WO2009040041A1 (en) * | 2007-09-24 | 2009-04-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method and device for improving a recirculation of exhaust gas in an internal combustion engine |
| CN201262123Y (en) * | 2008-08-01 | 2009-06-24 | 山西佳新能源化工实业有限公司 | High compression ratio spark-ignition type engine |
| EP2199577A1 (en) * | 2008-12-09 | 2010-06-23 | Deere & Company | Estimation of the gas flow through the exhaust gas recirculation loop |
| CN202954899U (en) * | 2012-12-11 | 2013-05-29 | 山东绿环动力设备有限公司 | Exhaust gas recirculation system of diesel engine |
-
2012
- 2012-12-11 CN CN2012105310753A patent/CN103016214A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1957170A (en) * | 2004-03-05 | 2007-05-02 | 哈尔德克斯水利学公司 | Control scheme for exhaust gas circulation system |
| US20080141757A1 (en) * | 2006-12-15 | 2008-06-19 | Caterpillar Inc. | Onboard method of determining EGR flow rate |
| WO2009040041A1 (en) * | 2007-09-24 | 2009-04-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method and device for improving a recirculation of exhaust gas in an internal combustion engine |
| CN201262123Y (en) * | 2008-08-01 | 2009-06-24 | 山西佳新能源化工实业有限公司 | High compression ratio spark-ignition type engine |
| EP2199577A1 (en) * | 2008-12-09 | 2010-06-23 | Deere & Company | Estimation of the gas flow through the exhaust gas recirculation loop |
| CN202954899U (en) * | 2012-12-11 | 2013-05-29 | 山东绿环动力设备有限公司 | Exhaust gas recirculation system of diesel engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373229A (en) * | 2013-08-13 | 2015-02-25 | 福特环球技术公司 | Methods and systems for EGR control |
| CN104373229B (en) * | 2013-08-13 | 2019-05-31 | 福特环球技术公司 | Method and system for exhaust gas recirculatioon control |
| CN110500209A (en) * | 2019-09-30 | 2019-11-26 | 潍柴动力股份有限公司 | A kind of the monitoring system and monitoring method of EGR check valve |
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Application publication date: 20130403 |