CN203035338U - Diesel engine successiveness pressurizing structure with air supply function - Google Patents
Diesel engine successiveness pressurizing structure with air supply function Download PDFInfo
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- CN203035338U CN203035338U CN2012206419462U CN201220641946U CN203035338U CN 203035338 U CN203035338 U CN 203035338U CN 2012206419462 U CN2012206419462 U CN 2012206419462U CN 201220641946 U CN201220641946 U CN 201220641946U CN 203035338 U CN203035338 U CN 203035338U
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- diesel engine
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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 aims at providing a diesel engine successiveness pressurizing structure with an air supply function. The diesel engine successiveness pressurizing structure with the air supply function comprises a diesel engine, a basic turbine supercharger and a controlled turbine supercharger, wherein the basic turbine supercharger is communicated with a first cylinder and a second cylinder of the diesel engine, and the controlled turbine supercharger is communicated with a third cylinder and a fourth cylinder of the diesel engine, an A-row exhaust manifold and a B-row exhaust manifold are communicated through a first communicating pipe, and an A-row air inlet manifold and a B-row air inlet manifold are communicated through a second communicating pipe. A gas valve is arranged between a turbine of a controlled supercharger and the first communicating pipe. An air valve is arranged between a compressor of the controlled supercharger and the second communicating pipe. The second communicating pipe is further communicated with a compression air source. According to the diesel engine successiveness pressurizing structure with the air supply function, air inflow supplement is carried out to air inlet communicating pipes of the diesel engine in the handover process, air inflow flow is proved, and air inflow pressure is stabilized. Flow fields of air inlet pipes are distributed evenly. The number of the needed sensors and control units is small. The successiveness pressurizing handoff process is stable. The diesel engine successiveness pressurizing structure with the air supply function is beneficial for improving total quality of engines.
Description
Technical field
The utility model relates to a kind of diesel engine, specifically sequential supercharged diesel engine.
Background technique
The sequential pressurizing technology is the technology that late 1970s West Germany MTU company at first adopts, its design mainly is in order to enlarge the operating range of 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, with engine speed and load increasing, put into operation in succession in order, so just can guarantee that the turbosupercharger that work moves at high efficient area all the time, so that the fuel consumption rate of motor is all lower in whole running district, low-speed big is functional.
In diesel engine sequential pressurizing handoff procedure, gas valve and air valve are successively opened, the controlled boost device is devoted oneself to work, in this handoff procedure, because the influence of the factors such as compressibility of gas in the existence of pressurized machine rotary inertia and the pipeline that links to each other with motor, cause the controlled boost device not make an immediate response, air valve must be later than the gas valve regular hour and open, to prevent that gas compressor enters the surge region operation in the transient state handoff procedure.Yet because air valve lags behind gas valve and opens, thereby make the instantaneous minimizing of basic pressurized machine exhaust gas flow, the pressurized air flow that it provides and pressure ratio descend, but the controlled boost device can not provide pressurized air to motor again, therefore cause before and after the handoff procedure that engine air-fuel ratio is instantaneous to be reduced and increase, the rotating speed rapid fluctuation moves not steady.If pressurization system cooperates bad with motor or switching controls is improper, gas compressor enters the surge region operation most probably, and motor may be subjected to bigger thermal shock.
Summary of the invention
The purpose of this utility model is to provide can be to adding compressed-air actuated diesel engine sequential pressurizing structure with gas compensation function air inlet connecting tube in the consecutive pressurization system handoff procedure.
The purpose of this utility model is achieved in that
The utlity model has the diesel engine sequential pressurizing structure of gas compensation function, it is characterized in that: comprise diesel engine, basic turbosupercharger, controlled turbosupercharger, the gas compressor of basic turbosupercharger is communicated with the suction port of first and second cylinders of diesel engine by A row intake manifold, the turbine of basic turbosupercharger is communicated with the relief opening of first and second cylinders of diesel engine by A row exhaust manifold, the gas compressor of controlled turbosupercharger is communicated with the suction port of third and fourth cylinder of diesel engine by B row intake manifold, the turbine of controlled turbosupercharger is communicated with the relief opening of third and fourth cylinder of diesel engine by B row exhaust manifold, A row exhaust manifold and B row exhaust manifold were connected by first connecting tube, A row intake manifold and B row intake manifold were connected by second connecting tube, the turbine of controlled boost device and between first connecting tube gas valve is set, the gas compressor of controlled boost device and between second connecting tube air valve is set, second connecting tube also was communicated with compressed gas source.
The utility model can also comprise:
1, between described second connecting tube and the compressed gas source aeration valve is set.
2, A row intercooler is set on the A row intake manifold, B row intercooler is set on the B row intake manifold.
Advantage of the present utility model is: the related sequential pressurizing structure of the utility model can be replenished to carrying out air inlet diesel engine intake connecting tube in this handoff procedure, improve charge flow rate, stablize suction pressure, the suction tude Flow Field Distribution is even, stable performance, required sensor and control unit negligible amounts, the sequential pressurizing handoff procedure becomes more steady, is conducive to improve the overall qualities of motor.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
For example the utility model is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1, the related diesel engine sequential pressurizing structure of the utility model is made of the A1 cylinder of compressed gas source 12, aeration valve 13, connecting tube 14, gas valve 19, air valve 10, A row intercooler 2, B row intercooler 18, A row intake manifold 3, B row intake manifold 17, A row intake manifold 4, B row intake manifold 9, diesel engine, A2 cylinder, B1 cylinder, B2 cylinder, A row exhaust manifold 15, B row exhaust manifold 16, pressurized machine etc., and compressed gas source 12 links to each other with air inlet connecting tube 14 by aeration valve 13.Aeration valve 13 1 ends link to each other with compressed gas source 12, and the other end linked to each other with connecting tube 14.Connecting tube 14 1, end linked to each other with basic pressurized machine 1 blower outlet, and the other end links to each other with air valve 10 outlets.Gas valve 19 1 ends link to each other with controlled boost device 11 turbine outlets, and the other end links to each other with B row exhaust manifold 16.Air valve 10 1 ends link to each other with controlled boost device 11 blower outlets, and 18 imports link to each other the other end with B row intercooler with connecting tube 14 respectively.
The control law of this sequential pressurizing structure is such:
The control object of diesel engine sequential pressurizing control system has gas valve 19, air valve 10 and aeration valve 13.When the running state of motor has reached the switching condition of 2 pressurized machines, gas valve 19 and aeration valve 13 are opened simultaneously, to being communicated with suction tude 14 tonifying Qi.Postpone after 2 seconds, air valve 10 is opened, postpone 2 seconds again after, aeration valve 13 is closed, switching is finished.When engine operation condition has reached the switching condition of 1 pressurized machine, control system keeps aeration valve 13 to close, and gas valve 19 and air valve 10 are closed simultaneously and got final product.Opening of gas valve 19 and air valve 10 is in order to start controlled boost device 11, and the purpose that aeration valve 13 is opened is to improve engine intake airflow, stablizes suction pressure, improves motor emission performance during this period.
Claims (3)
1. the diesel engine sequential pressurizing structure that has gas compensation function, it is characterized in that: comprise diesel engine, basic turbosupercharger, controlled turbosupercharger, the gas compressor of basic turbosupercharger is communicated with the suction port of first and second cylinders of diesel engine by A row intake manifold, the turbine of basic turbosupercharger is communicated with the relief opening of first and second cylinders of diesel engine by A row exhaust manifold, the gas compressor of controlled turbosupercharger is communicated with the suction port of third and fourth cylinder of diesel engine by B row intake manifold, the turbine of controlled turbosupercharger is communicated with the relief opening of third and fourth cylinder of diesel engine by B row exhaust manifold, A row exhaust manifold and B row exhaust manifold were connected by first connecting tube, A row intake manifold and B row intake manifold were connected by second connecting tube, the turbine of controlled boost device and between first connecting tube gas valve is set, the gas compressor of controlled boost device and between second connecting tube air valve is set, second connecting tube also was communicated with compressed gas source.
2. the diesel engine sequential pressurizing structure with gas compensation function according to claim 1 is characterized in that: between described second connecting tube and the compressed gas source aeration valve is set.
3. the diesel engine sequential pressurizing structure with gas compensation function according to claim 1 and 2 is characterized in that: A row intercooler is set on the A row intake manifold, B row intercooler is set on the B row intake manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206419462U CN203035338U (en) | 2012-11-29 | 2012-11-29 | Diesel engine successiveness pressurizing structure with air supply function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206419462U CN203035338U (en) | 2012-11-29 | 2012-11-29 | Diesel engine successiveness pressurizing structure with air supply function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035338U true CN203035338U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206419462U Expired - Fee Related CN203035338U (en) | 2012-11-29 | 2012-11-29 | Diesel engine successiveness pressurizing structure with air supply function |
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| CN (1) | CN203035338U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032152A (en) * | 2012-11-29 | 2013-04-10 | 哈尔滨工程大学 | Diesel engine sequential supercharging structure with air supplementing function |
| CN105386856A (en) * | 2015-12-08 | 2016-03-09 | 中国船舶重工集团公司第七一一研究所 | Two-stage sequential turbocharging system used for internal combustion engine and internal combustion engine |
| CN112780402A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Multi-point sequential air supplement device and method for high-power marine diesel engine |
-
2012
- 2012-11-29 CN CN2012206419462U patent/CN203035338U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032152A (en) * | 2012-11-29 | 2013-04-10 | 哈尔滨工程大学 | Diesel engine sequential supercharging structure with air supplementing function |
| CN105386856A (en) * | 2015-12-08 | 2016-03-09 | 中国船舶重工集团公司第七一一研究所 | Two-stage sequential turbocharging system used for internal combustion engine and internal combustion engine |
| CN112780402A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Multi-point sequential air supplement device and method for high-power marine diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20151129 |