CN203835524U - Successive diesel engine pressurizing structure with switch stabilizing function - Google Patents
Successive diesel engine pressurizing structure with switch stabilizing function Download PDFInfo
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- CN203835524U CN203835524U CN201420261952.4U CN201420261952U CN203835524U CN 203835524 U CN203835524 U CN 203835524U CN 201420261952 U CN201420261952 U CN 201420261952U CN 203835524 U CN203835524 U CN 203835524U
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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 utility model provides a successive diesel engine pressurizing structure with a switch stabilizing function and a successive pressurizing method. An air cylinder of a diesel engine comprises a first group of air cylinder bodies, a second group of air cylinder bodies, a third group of air cylinder bodies and a fourth group of air cylinder bodies. An A row air inlet pipe is communicated with an air compressor of a basic turbocharger, inlets of the first groups of air cylinder bodies and inlets of the second group of air cylinder bodies. A B row air inlet pipe is communicated with an air compressor of a controlled turbocharger, inlets of the third group of air cylinder bodies and inlets of the fourth group of air cylinder bodies. Outlets of the first group of air cylinder bodies and outlets of the second group of air cylinder bodies are respectively communicated with a first A row air exhausting branch pipe and a second A row air exhausting branch pipe. Outlets of the third group of air cylinder bodies and outlets of the four group of air cylinder bodies are respectively communicated with a first B row air exhausting branch pipe and a second B row air exhausting branch pipe. An A row air exhausting pipe is communicated with a turbine of the basic turbocharger, the first A row air exhausting branch pipe and the second A row air exhausting branch pipe. A B row air exhausting pipe is communicated with a turbine of the controlled turbocharger and the first B row air exhausting branch pipe. The A row air exhausting pipe is communicated with the B row air exhausting pipe through an air exhausting communication pipe, and the second B row air exhausting branch pipe is communicated with the air exhausting communication pipe. The successive diesel engine pressurizing structure improves the successive pressurizing switch performance of the diesel engine.
Description
Technical field
The utility model relates to a kind of diesel engine structure.
Background technique
The technology that first sequential pressurizing technology ShiMTU company adopted in late 1970s, its purpose of design is mainly the operating range that expands low compression ratio, high blower engine, the fuel consumption rate when increasing the low speed torque of motor and reducing operation at part load.Its basic principle is to adopt a plurality of turbosupercharger, growth along with engine speed and load, in succession put into operation according to priority, the turbosupercharger that the work that can guarantee like this is gone operation in high efficiency all the time, make the fuel consumption rate of motor all lower in whole running district, there is good low-speed big performance.
In sequential pressurizing handoff procedure, be subject to the impact of the rotary inertia of pressurized machine and the factors such as compressibility of the interior gas of the connected pipeline of motor, the response of controlled boost device has hysteresis, therefore gas valve must be opened prior to the air valve regular hour, to prevent controlled boost device generation surge in transient state handoff procedure.Yet, air valve lags behind gas valve and opens, make the instantaneous minimizing of basic pressurized machine exhaust gas flow, the pressurized air flow that it provides and pressure ratio decline, but controlled boost device can not provide pressurized air to motor again, cause before and after handoff procedure that engine air-fuel ratio is instantaneous to be reduced or increase, cause diesel engine speed rapid fluctuation, move not steady.
Therefore be necessary further to study improving diesel engine sequential pressurizing handoff procedure stability.
Summary of the invention
The purpose of this utility model is to provide can improve the diesel engine sequential pressurizing structure with switching stabilization function that reduces sharply the unsteady phenomenas such as the fluctuation of speed that bring due to the basic turbosupercharger exhaust gas flow causing after switching.
The purpose of this utility model is achieved in that
The utlity model has the diesel engine sequential pressurizing structure of switching stabilization function, it is characterized in that: comprise diesel engine, basic turbosupercharger, controlled turbosupercharger, A row suction tude, B row suction tude, A row outlet pipe, B row outlet pipe, the cylinder of diesel engine comprises tetra-groups of cylinders of first-, A row suction tude is communicated with the gas compressor of basic turbosupercharger, the import of the first-the second group of cylinder, B row suction tude is communicated with the gas compressor of controlled turbosupercharger, the import of tetra-groups of cylinders of three-, the outlet of the first-the second group of cylinder is communicated with respectively the first-two A row exhaust branch pipe, the outlet of tetra-groups of cylinders of three-is communicated with respectively the first-two B row exhaust branch pipe, A row outlet pipe is communicated with the turbine of basic turbosupercharger, the first-two A row exhaust branch pipe, B row outlet pipe is communicated with the turbine of controlled turbosupercharger, the one B row exhaust branch pipe, between A row outlet pipe and B row outlet pipe by being connected exhaust connecting tube, the 2nd B row exhaust branch pipe is communicated with exhaust connecting tube.
The diesel engine sequential pressurizing structure that the utlity model has switching stabilization function can also comprise:
1, in the B row suction tude between the 4th group of cylinder and the gas compressor of controlled turbosupercharger, air valve is installed, between the one B row exhaust branch pipe and the 2nd B row exhaust branch pipe, control valve is installed, on exhaust connecting tube the second B row exhaust branch pipe and exhaust connecting tube connecting place and B row outlet pipe and exhaust connecting tube connecting place between position on one-way valve is installed, on B row outlet pipe, on the position between exhaust connecting tube and B row outlet pipe connecting place and the turbine of controlled turbosupercharger, gas valve is installed.
Advantage of the present utility model is: in handoff procedure, controlled turbosupercharger is successively supplied with in the exhaust of B row cylinder in batches, and in switching, keep the single flow direction between A, B row outlet pipe, contribute to slow down the incision of gas valve causes basic turbosupercharger flow moment reduce sharply with the bad phenomenon such as the fluctuation of speed, improved the stationarity of handoff procedure; When finishing switching can revert to existing sequential pressurizing pattern.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model structure.
Embodiment
Below in conjunction with accompanying drawing, for example the utility model is described in more detail:
In conjunction with Fig. 1, the utility model comprises that diesel engine body is A1-A8 and B1-B8 cylinder, A row suction tude, B row suction tude, A row outlet pipe, B row outlet pipe, basic turbosupercharger 1 and 19, controlled turbosupercharger 16 and 18, intercooler 5, exhaust connecting tube 2, exhaust connection arm 13, gas valve 15, air valve 17, one-way valve 14 and control valve 11.
Outlet pipe comprises A row outlet pipe 3 and B row outlet pipe 12, and A, B row outlet pipe form by exhaust branch pipe one, two, and A row outlet pipe 3 is connected with basic turbocharger turbine 1, and B row outlet pipe 12 is connected with controlled turbocharger turbine 16.
A, B row outlet pipe are connected by being communicated with outlet pipe 2, realize A, the intercommunication of B row outlet pipe waste gas.
Exhaust is communicated with arm 13 one end and is connected with control valve 11 entrances, and the other end is connected with one-way valve 14 outlets, and the waste gas that switches initial time B row cylinder to realize is successively supplied with controlled turbosupercharger in batches.
One-way valve 14 was arranged on exhaust connecting tube 2, exhaust stream while only making to switch in B row outlet pipe 12 is to A row outlet pipe 3, in A row outlet pipe 3, exhaust cannot flow to B row outlet pipe 12, prevent that in handoff procedure, the exhaust in A row outlet pipe 3 flows into B row outlet pipe 12, contribute to slow down the waste gas loss of basic turbosupercharger while switching.
Control program is like this:
1, switch and start, gas valve 15 is opened, closed control valve 11, make waste gas in B row exhaust branch pipe 29 continue to be communicated with arm 13 by exhaust and enter exhaust connecting tube 2, supply with basic turbocharger operation, only the waste gas in B row exhaust branch pipe 1 is supplied with controlled turbocharger turbine, and controlled turbosupercharger is started working.
2, due to the one-way flow of one-way valve 14, stoped the waste gas in A row outlet pipe 3 to scurry into B row outlet pipe 12, the instantaneous waste gas that has effectively alleviated basic turbosupercharger switching instant runs off.
3, when the switching delay time finishes or before closing to an end, according to determining the different retard times of different type of machines, open control valve 11, passage between B row exhaust branch pipe 29 and B row outlet pipe 12 is opened, waste gas in exhaust branch pipe 29 is supplied with controlled turbosupercharger simultaneously, and B row A, B row outlet pipe are realized intercommunication.
By 1,2,3 steps, switching delay is started between finishing, the waste gas of B row cylinder is successively supplied with controlled turbosupercharger in batches, utilized with the aisle limit of one-way valve 14 waste gas in A row outlet pipe 3 to run off simultaneously, can contribute to the waste gas instantaneous flow when incision that slows down basic turbosupercharger to reduce sharply, improve the stationarity of handoff procedure.
The utility model device comprises diesel engine, suction tude, outlet pipe, turbosupercharger, intercooler, gas valve, air valve, one-way valve.Turbosupercharger comprises basic pressurized machine and controlled boost device, suction tude comprises A row suction tude and B row suction tude, A row suction tude is connected with basic turbocharger air compressor, and B row suction tude is connected with controlled turbocharger air compressor, and A, B row suction tude are all connected with intercooler.Outlet pipe comprises A row outlet pipe and B row outlet pipe, A, B row outlet pipe form by exhaust branch pipe one, two, A row outlet pipe is connected with basic turbocharger turbine, B row outlet pipe is connected with controlled turbocharger turbine, A, B row outlet pipe are connected by being communicated with outlet pipe, exhaust is communicated with arm one end and is connected with control valve entrance, and the other end is connected with one-way valve outlet.Control valve is arranged on B row exhaust branch pipe two, and it is upper that one-way valve is arranged on exhaust connecting tube, and gas valve is arranged on B row outlet pipe, and air valve is arranged in B row suction tude.
It is such that method of the present utility model realizes:
1 after not switching or switching under steady state, control valve keeps often opening, between B row exhaust branch pipe one, two, be communicated with, waste gas in arm imports B row outlet pipe jointly, waste gas in B row outlet pipe can flow to A row outlet pipe by one-way valve, also can be communicated with arm by exhaust and flow to A row outlet pipe.Waste gas in A row outlet pipe can only be communicated with arm by exhaust and flow into B row outlet pipe.Now, all waste gases is all supplied with to basic turbocharger operation, realizes the effect same with existing sequential pressurizing structure, i.e. A, the intercommunication of B row outlet pipe.
2 when switching, after gas valve is opened prior to air valve, and while closed control valve, the waste gas in B row exhaust branch pipe one enters B row outlet pipe, through gas valve, supplies with controlled turbocharger turbine work; B row exhaust branch pipe two is communicated with arm by exhaust and enters exhaust connecting tube, continue to supply with basic turbocharger operation, prevents that the basic turbosupercharger flow of cut process moment from reducing sharply.Due to the characteristic of one-way valve, stop the exhaust of A row cylinders in handoff procedure, to flow to B row outlet pipe simultaneously, contributed to maintain basic turbosupercharger exhaust gas flow stable.When the switching delay time finishes or before finishing according to determining the different retard times of different type of machines, opening controlling valve, waste gas in B row exhaust branch pipe two flows into B row outlet pipe via control valve, supply with controlled boost device turbine, open air valve simultaneously, controlled turbocharger air compressor is started working, revert to 1 described in operation.
The utlity model has the diesel engine sequential pressurizing structure of switching stabilization function, comprise diesel engine, suction tude, outlet pipe, turbosupercharger, intercooler, gas valve, air valve, one-way valve.Turbosupercharger comprises basic pressurized machine and controlled boost device, suction tude comprises A row suction tude 4 and B row suction tude 10, A row suction tude 4 is connected with basic turbocharger air compressor 19, and B row suction tude 10 is connected with controlled turbocharger air compressor 18, and A, B row suction tude are all connected with intercooler 5.Outlet pipe comprises A row outlet pipe 3 and B row outlet pipe 12, A, B row outlet pipe is by exhaust branch pipe one, two form, A row outlet pipe 3 is connected with basic turbocharger turbine 1, B row outlet pipe 12 is connected with controlled turbocharger turbine 16, A, B row outlet pipe is connected by being communicated with outlet pipe 2, exhaust is communicated with arm 13 one end and is connected with control valve 11 entrances, the other end is connected with one-way valve 14 outlets. and control valve 11 is arranged on B row exhaust branch pipe 29, one-way valve 14 was arranged on exhaust connecting tube 2, gas valve 15 is arranged on B row outlet pipe, air valve 17 is arranged in B row suction tude.
One-way valve 14 was installed on exhaust connecting tube 2, prevents that in handoff procedure, the exhaust in A row outlet pipe 3 flows into B row outlet pipe 12, contribute to slow down the waste gas loss of basic turbosupercharger while switching.
On B row exhaust branch pipe 29, be provided with control valve 11.
Between B row exhaust branch pipe 29 and exhaust connecting tube 2, by exhaust, be communicated with arm 13 and be communicated with, wherein exhaust is communicated with arm 13 one end and is connected with control valve 11 entrances, and the other end exports and is connected with one-way valve 14.
The flow direction of one-way valve is set to: the exhaust stream while only making to switch in B row outlet pipe 12 is to A row outlet pipe 3, and in A row outlet pipe 3, exhaust cannot flow to B row outlet pipe 12.
The keying of control valve 11 is relevant with the switching delay time.
Claims (2)
1. there is the diesel engine sequential pressurizing structure of switching stabilization function, it is characterized in that: comprise diesel engine, basic turbosupercharger, controlled turbosupercharger, A row suction tude, B row suction tude, A row outlet pipe, B row outlet pipe, the cylinder of diesel engine comprises tetra-groups of cylinders of first-, A row suction tude is communicated with the gas compressor of basic turbosupercharger, the import of the first-the second group of cylinder, B row suction tude is communicated with the gas compressor of controlled turbosupercharger, the import of tetra-groups of cylinders of three-, the outlet of the first-the second group of cylinder is communicated with respectively the first-two A row exhaust branch pipe, the outlet of tetra-groups of cylinders of three-is communicated with respectively the first-two B row exhaust branch pipe, A row outlet pipe is communicated with the turbine of basic turbosupercharger, the first-two A row exhaust branch pipe, B row outlet pipe is communicated with the turbine of controlled turbosupercharger, the one B row exhaust branch pipe, between A row outlet pipe and B row outlet pipe by being connected exhaust connecting tube, the 2nd B row exhaust branch pipe is communicated with exhaust connecting tube.
2. according to claim 1 have a diesel engine sequential pressurizing structure of switching stabilization function, it is characterized in that: in the B row suction tude between the 4th group of cylinder and the gas compressor of controlled turbosupercharger, air valve is installed, between the one B row exhaust branch pipe and the 2nd B row exhaust branch pipe, control valve is installed, on exhaust connecting tube the second B row exhaust branch pipe and exhaust connecting tube connecting place and B row outlet pipe and exhaust connecting tube connecting place between position on one-way valve is installed, on B row outlet pipe, on the position between exhaust connecting tube and B row outlet pipe connecting place and the turbine of controlled turbosupercharger, gas valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261952.4U CN203835524U (en) | 2014-05-21 | 2014-05-21 | Successive diesel engine pressurizing structure with switch stabilizing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261952.4U CN203835524U (en) | 2014-05-21 | 2014-05-21 | Successive diesel engine pressurizing structure with switch stabilizing function |
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| Publication Number | Publication Date |
|---|---|
| CN203835524U true CN203835524U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261952.4U Withdrawn - After Issue CN203835524U (en) | 2014-05-21 | 2014-05-21 | Successive diesel engine pressurizing structure with switch stabilizing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967591A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Diesel engine subsequent pressurizing structure with stable switching function and subsequent pressurizing method |
| CN109667660A (en) * | 2018-12-27 | 2019-04-23 | 潍柴动力股份有限公司 | A kind of sequential pressurizing device and sequential pressurizing method |
-
2014
- 2014-05-21 CN CN201420261952.4U patent/CN203835524U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967591A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Diesel engine subsequent pressurizing structure with stable switching function and subsequent pressurizing method |
| CN103967591B (en) * | 2014-05-21 | 2016-05-04 | 哈尔滨工程大学 | There is diesel engine sequential pressurizing structure and the sequential pressurizing method of switching stabilization function |
| CN109667660A (en) * | 2018-12-27 | 2019-04-23 | 潍柴动力股份有限公司 | A kind of sequential pressurizing device and sequential pressurizing method |
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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: 20140917 Effective date of abandoning: 20160504 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |