CN202628247U - Pulse type compound exhaust pipe line turbocharging system - Google Patents
Pulse type compound exhaust pipe line turbocharging system Download PDFInfo
- Publication number
- CN202628247U CN202628247U CN 201220270549 CN201220270549U CN202628247U CN 202628247 U CN202628247 U CN 202628247U CN 201220270549 CN201220270549 CN 201220270549 CN 201220270549 U CN201220270549 U CN 201220270549U CN 202628247 U CN202628247 U CN 202628247U
- Authority
- CN
- China
- Prior art keywords
- pipe
- main exhaust
- gas collecting
- exhaust
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Supercharger (AREA)
Abstract
The utility model discloses a pulse type compound exhaust pipe line turbocharging system which belongs to the technical field of internal combustion engines and comprising a main exhaust pipe, a main exhaust branch pipe, a bypass pipe and a gas collecting pipe, wherein the inlet of the main exhaust branch pipe is connected with an engine exhaust pipe, the outlet of the main exhaust branch pipe is connected with the main exhaust pipe, the inlet of the bypass pipe is connected with the main exhaust branch pipe, the outlet of the bypass pipe is connected with the gas collecting pipe, the outlet of the main exhaust pipe is connected with the inlet of the gas collecting pipe, the outlet of the gas collecting pipe is connected with a turbo inlet, the bypass pipe extends to the gas collecting pipe along an exhaust flowing direction in the main exhaust main pipe and the main exhaust pipe, the bypass pipe is connected with the side wall of the gas collecting pipe, an inner cavity of the bypass pipe is communicated with an inner cavity of the gas collecting pipe, and bypass pipes are arranged on the main exhaust branch pipes of all cylinders and are led out to the gas collecting pipe. The pulse type compound exhaust pipe line turbocharging system has the advantages of little scavenging interference, high energy utilization rate, small occupation space and compact arrangement.
Description
Technical field
The utility model relates to a kind of pressurization system of internal combustion engine, and the compound exhaust piping turbo charge system of particularly a kind of pulsed belongs to technical field of internal combustion engines.
Background technique
Diesel engine is a kind of widely used power equipment; Supercharging technology is that present diesel engine satisfies one of indispensable technology of target for energy-saving and emission-reduction; Turbo charge system is as the critical system of supercharged diesel engine, and power character, Economy and the emission performance of supercharged diesel engine all had material impact.In order to improve the diesel engine thermal efficiency, reduce diesel emission, reduce the specific power cost of production, the specific power and the supercharging level of diesel engine are increasingly high, and this reliability to pressurization system, transient response property and scavenging uniformity have proposed requirements at the higher level.Full performance of operating condition is good, the exhaust energy utilization ratio high, cylinder scavenging is smooth and easy, step response good, exhaust pipe structure simply is the overall target of present diesel exhaust gas piping optimal design.Around this design objective, the researcher is developed and seven kinds of pressurization system forms: constant pressure charging system, impulse pressure charging system, pulse converter supercharging system, module type pulse pressurization system, mixed pulse converter pressurization system, module type multifunctional pulse conversion turbocharging system and variable exhaust guard system.
The scavenging of level pressure system is disturbed little, and the pumping work loss is little, but the exhaust pulses capacity usage ratio is low, low-load performance is relatively poor; Pulse system can avoid scavenging to disturb preferably, and the exhaust pulses capacity usage ratio is high, the scavenging good uniformity, and low-load performance is good, but turbine has a plurality of imports, and turbocharger efficiency is low, should not on the more diesel engine of cylinder number, use; Compare the pulse converter supercharging system with pulse system, the turbine inlet is few, and turbine efficiency is high, but the reducing of pulse converter has increased gas-flow resistance; Module type pulse pressurization system exhaust piping is simple in structure, is convenient to produce, and can utilize the exhaust pulses energy preferably, and turbine efficiency is higher, but this system reduces the poor-performing that scavenging is disturbed.The mixed pulse converter pressurization system that utility model patent 97242566.7 discloses; Can utilize the exhaust pulses energy preferably; Step response is better, and structure is simple relatively, reduces the better performances that scavenging is disturbed; The complex structure degree increases its restricted application but this system is along with the increase of cylinder of diesel engine number.The module type multifunctional pulse conversion turbocharging system that patent of invention 200810203029.4 discloses; Structure is simpler; But the exhaust branch pipe extension in arch cross section is near the outlet pipe axis, and flow losses are bigger in causing managing, and this system's reduction scavenging interference capability is limited.The variable exhaust pipe system schema that patent of invention 200810203054.2, patent of invention 200810203055.7 and patent of invention 200920210502.1 propose; Through control valve turbo charge system is switched between pulse pressure-charging and constant pressure supercharging (or certainly pressing supercharging); Can take into account the requirement of height operating mode, but disturb not significantly effect, and this type systematic need be confirmed handoff boundary according to the motor operation characteristic reducing scavenging; Increase the system complex degree, reduced reliability.The utility model provides a kind of pulsed compound exhaust piping turbo charge system, can effectively reduce scavenging and disturb, and reduces the vent systems resistance, makes full use of the exhaust pulses energy.
Summary of the invention
In order to improve the deficiency of existing technology; The utility model provides the compound exhaust piping turbo charge system of a kind of pulsed, this pressurization system can effectively reduce scavenging to be disturbed, and reduces the vent systems resistance; Improve the exhaust back pressure nonuniformity of each cylinder of diesel engine; Improve the exhaust pulses capacity usage ratio, be convenient to stack mounting, be applicable to the motor of various cylinder numbers.
The utility model is realized through following technological scheme: the compound exhaust piping turbo charge system of a kind of pulsed; It comprises main exhaust, main exhaust arm, bypass tube, gas collecting tube; The inlet of main exhaust arm connects the engine exhaust road; The outlet of main exhaust arm connects main exhaust, and the inlet of bypass tube connects the main exhaust arm, and the outlet of bypass tube connects gas collecting tube; The outlet of main exhaust connects the import of gas collecting tube; The outlet of gas collecting tube connects the turbine inlet, and the inlet of bypass tube is the inlet diameter of 0.1～0.5 times of main exhaust arm to the distance of the inlet of main exhaust arm, and the long-pending ratio range that amasss with main exhaust arm entrance section of the entrance section of bypass tube is 0.05～0.2; Bypass tube extends to gas collecting tube along flow direction of exhaust gases in main exhaust arm and the main exhaust, all has bypass tube to lead to gas collecting tube on each cylinder main exhaust arm.
The beneficial effect of the utility model:
At scavenging period, the inblock cylinder throughput is little, and the exhaust valve outlet pressure is low, owing to receive the influence that scavenging is disturbed, house steward's internal pressure is higher, and the turbine ingress is a low pressure area, and exhaust mainly flows to the turbine inlet by bypass tube, reduces scavenging to disturb; When the exhaust valve aperture was big, main exhaust arm internal pressure was higher, and the bypass tube entrance section is long-pending less relatively, and throttle effect is obvious, and air-flow mainly in the main exhaust arm flows into main exhaust, has improved the pulse energy utilization ratio; The bypass tube diameter is less, and it is little to take up room, and can compactly arrange.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model on four-cylinder elaborated; Present embodiment is a prerequisite with the technological scheme of the utility model; Provided detailed mode of execution and concrete operating process, but the protection domain of the utility model is not limited to following embodiment.
Embodiment
As shown in Figure 1; The utility model comprises main exhaust 1, main exhaust arm 2, bypass tube 3, gas collecting tube 4, and the inlet of main exhaust arm 2 connects the engine exhaust road, and the outlet of main exhaust arm 2 connects main exhaust 1; The inlet of bypass tube 3 connects main exhaust arm 2; The outlet of bypass tube 3 connects gas collecting tube 4, and the outlet of main exhaust 1 connects the import of gas collecting tube 4, and the outlet of gas collecting tube 4 connects the turbine inlet; The inlet of bypass tube 3 is inlet diameters of 0.1～0.5 times of main exhaust arm 2 to the distance of the inlet of main exhaust arm 2; The long-pending ratio range that amasss with main exhaust arm 2 entrance sections of the entrance section of bypass tube 3 is 0.05～0.2, and bypass tube 3 extends to gas collecting tube 4 along main exhaust arm 2 and main exhaust 1 interior flow direction of exhaust gases, all has bypass tube 3 to lead to gas collecting tube 4 on each cylinder main exhaust arm 2.
With the four-cylinder is example; The inlet of each cylinder main exhaust arm 2 connects the engine exhaust road; The outlet of main exhaust arm 2 connects main exhaust 1, and the inlet of bypass tube 3 connects main exhaust arm 2, and the outlet of bypass tube 3 connects gas collecting tube 4; The outlet of main exhaust 1 connects the import of gas collecting tube 4; The outlet of gas collecting tube 4 connects the turbine inlet, and the inlet of bypass tube 3 is inlet diameters of 0.2 times of main exhaust arm 2 to the distance of the inlet of main exhaust arm 2, and the long-pending ratio that amasss with main exhaust arm 2 entrance sections of the entrance section of bypass tube 3 is 0.15; Bypass tube 3 extends to gas collecting tube 4 along main exhaust arm 2 and main exhaust 1 interior flow direction of exhaust gases, all has bypass tube 3 to lead to gas collecting tube 4 on each cylinder main exhaust arm 2.
Scavenging period at any cylinder of motor; This cylinder extraction flow is little, and the exhaust valve outlet pressure is lower, and a certain cylinder in 1 company of main exhaust cylinder is in the bigger stage of extraction flow; In main exhaust 1, form higher pressure; At this moment, because turbine enters the mouth to the attenuation of pressure, the pressure in the gas collecting tube 4 is relatively low.Therefore, at scavenging period, the exhaust of cylinder is mainly arrived gas collecting tube 4 through bypass tube 3, and then flows into turbine.In the exhaust mid-term of arbitrary cylinder,, in main exhaust arm 2, set up higher pressure because this cylinder extraction flow is bigger; There are enough driving forces to order about blast air and go into main exhaust 1; The sectional area of circulation pipeline becomes the principal element of restriction flow size, again because main exhaust arm 2 is bigger with the sectional area ratio of bypass tube 3, therefore; Exhaust mainly flows into main exhaust 1 from main exhaust arm 2, can improve the capacity usage ratio of exhaust.
Claims (1)
1. compound exhaust piping turbo charge system of pulsed; Comprise main exhaust (1), main exhaust arm (2), bypass tube (3), gas collecting tube (4); The inlet of main exhaust arm (2) connects the engine exhaust road; The outlet of main exhaust arm (2) connects main exhaust (1), it is characterized in that the inlet of bypass tube (3) connects main exhaust arm (2), and the outlet of bypass tube (3) connects gas collecting tube (4); The outlet of main exhaust (1) connects the import of gas collecting tube (4); The outlet of gas collecting tube (4) connects the turbine inlet, and the inlet of bypass tube (3) is the inlet diameter of 0.1～0.5 times of main exhaust arm (2) to the distance of the inlet of main exhaust arm (2), and the long-pending ratio range that amasss with main exhaust arm (2) entrance section of the entrance section of bypass tube (3) is 0.05～0.2; Bypass tube (3) extends to gas collecting tube (4) along main exhaust arm (2) and the interior flow direction of exhaust gases of main exhaust (1), all has bypass tube (3) to lead to gas collecting tube (4) on each cylinder main exhaust arm (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270549 CN202628247U (en) | 2012-06-11 | 2012-06-11 | Pulse type compound exhaust pipe line turbocharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270549 CN202628247U (en) | 2012-06-11 | 2012-06-11 | Pulse type compound exhaust pipe line turbocharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202628247U true CN202628247U (en) | 2012-12-26 |
Family
ID=47381455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220270549 Expired - Fee Related CN202628247U (en) | 2012-06-11 | 2012-06-11 | Pulse type compound exhaust pipe line turbocharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202628247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705053A (en) * | 2012-06-11 | 2012-10-03 | 山东交通学院 | Pulse complex exhaust pipe system supercharging system |
-
2012
- 2012-06-11 CN CN 201220270549 patent/CN202628247U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705053A (en) * | 2012-06-11 | 2012-10-03 | 山东交通学院 | Pulse complex exhaust pipe system supercharging system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201763438U (en) | Turbo charging device with variable outlet area of an exhaust pipe | |
| CN102425488B (en) | Adjustable two-stage supercharging sequential system applied to V-shaped diesel engine | |
| CN202125377U (en) | EGR (Exhaust Gas Recircualtion) system of diesel engine | |
| CN101413423A (en) | Module type multifunctional pulse conversion turbocharging system | |
| CN101215989A (en) | Internal combustion engine exhaust turbine pressurization system possessing natural air inlet device | |
| CN100510343C (en) | Gas flow guiding composite pulse conversion turbo supercharging system | |
| CN102400757B (en) | Anti-interference module type quasi pulse turbo charging system | |
| CN202081948U (en) | Exhaust manifold for automobile supercharged engine | |
| CN102797595A (en) | Exhaust gas recirculation (EGR) system for diesel engine | |
| CN202628247U (en) | Pulse type compound exhaust pipe line turbocharging system | |
| CN102410076B (en) | Turbo-charging system provided with moving part in exhaust pipe | |
| CN104533599B (en) | The two-stage adjustable pressurization system of internal combustion engine | |
| CN203009031U (en) | Modular two-stage exhaust piping turbocharging system | |
| CN105508035A (en) | Supercharged diesel engine multi-mode switch supercharging structure and method | |
| CN202468011U (en) | Turbocharging device | |
| CN102444468B (en) | Turbocharging system with moving plate in front of turbine inlet | |
| CN204552954U (en) | The two-stage adjustable pressurization system of internal-combustion engine | |
| CN101270686A (en) | Advanced recovery and exhaustion system for reusable diesel exhaust gas | |
| CN203081570U (en) | Pressurized diesel engine pressurizing system | |
| CN102705053A (en) | Pulse complex exhaust pipe system supercharging system | |
| CN102418590A (en) | Turbocharging system with exhaust pipe with variable volume | |
| CN202628246U (en) | Split type turbine pressurizing system for secondary exhaust pipe system | |
| CN102383916B (en) | Turbocharging system with continuously adjustable volume of exhaust pipe | |
| CN102418588B (en) | Exhaust pipe volume adaptive turbocharging system | |
| CN102720581A (en) | Mechanically telescopic device with three connection pipes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130611 |