CN102691567A - Split type secondary exhaust pipe system turbo supercharging system - Google Patents
Split type secondary exhaust pipe system turbo supercharging system Download PDFInfo
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- CN102691567A CN102691567A CN2012101886970A CN201210188697A CN102691567A CN 102691567 A CN102691567 A CN 102691567A CN 2012101886970 A CN2012101886970 A CN 2012101886970A CN 201210188697 A CN201210188697 A CN 201210188697A CN 102691567 A CN102691567 A CN 102691567A
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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 invention discloses a split type secondary exhaust pipe system turbo supercharging system, and belongs to the technical field of internal combustion engines. The split type secondary exhaust pipe system turbo supercharging system comprises primary exhaust branch pipes, a primary exhaust pipe, secondary exhaust branch pipes, a top-mounted secondary exhaust pipe, an underneath type secondary exhaust pipe and a mixer, wherein the mixer consists of a mixer primary pipe and a mixer secondary pipe; inlets of the primary exhaust branch pipes are connected with an engine exhaust passage; outlets of the primary exhaust branch pipes are connected with the primary exhaust pipe; inlets of the secondary exhaust branch pipes are connected with the primary exhaust branch pipes; an outlet of the primary exhaust pipe is connected with the mixer primary pipe; according to a firing order, cylinders are divided into two groups, the primary exhaust branch pipes of one group of the cylinders are connected with the top-mounted secondary exhaust pipe through the secondary exhaust branch pipes, and the primary exhaust branch pipes of the other group of cylinders are connected with the underneath type secondary exhaust pipe through the secondary exhaust branch pipes; outlets of the top-mounted secondary exhaust pipe and the underneath type secondary exhaust pipe are connected with an inlet of the mixer secondary pipe; and an outlet of the mixer is connected with a turbine inlet. The split type secondary exhaust pipe system turbo supercharging system is reasonably designed, is simple in structure and is suitable for engines with a variety of cylinder numbers.
Description
Affiliated technical field
The present invention relates to a kind of pressurization system of internal combustion engine, particularly a kind of split type secondary exhaust piping turbo charge system belongs to technical field of internal combustion engines.
Background technique
Diesel engine is a kind of important dynamic power machine, is power resources main in the productive life, at present in powerful diesel engine adopt turbocharging technology more, to improve power, to reduce fuel consumption rate.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, scavenging is smooth and easy, step response good, simple in structure be 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 Manifold technology.
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.In existing technology; The mixed pulse converter pressurization system that utility model patent 97242566.7 discloses can be utilized the exhaust pulses energy preferably, and step response is better; Structure is simple relatively; Reduce 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 invention provides a kind of split type secondary exhaust piping turbo charge system, can reduce scavenging interference and vent systems resistance, make full use of the exhaust pulses energy.
Summary of the invention
In order to overcome the deficiency of existing technology; The invention provides a kind of split type secondary exhaust piping turbo charge system; The blanketing effect through secondary outlet pipe and the assignment of traffic of primary and secondary outlet pipe reduce the scavenging of motor to be disturbed, and improves the exhaust pulses capacity usage ratio.This system layout is convenient, is easy to make, and is applicable to the motor of various cylinder numbers.
To achieve these goals; The technological scheme that the present invention adopted is: this system comprises main exhaust arm, main exhaust, secondary exhaust branch pipe, the secondary outlet pipe of up-set type, the secondary outlet pipe of underneath type, mixer; Mixer is responsible for mixer time pipe by mixer and is formed, and the inlet of main exhaust arm connects the engine exhaust road, and the outlet of main exhaust arm connects main exhaust; The inlet of secondary exhaust branch pipe connects the main exhaust arm; The inlet of secondary exhaust branch pipe 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 secondary exhaust branch pipe is 0.05～0.5, and the outlet of main exhaust links to each other with the inlet that mixer is responsible for; According to firing order; Cylinder is divided into two groups, and the main exhaust arm of one group of cylinder connects the secondary outlet pipe of up-set type through secondary exhaust branch pipe, and the main exhaust arm of another group cylinder connects the secondary outlet pipe of underneath type through secondary exhaust branch pipe; The secondary outlet pipe of up-set type and institute connect that secondary exhaust branch pipe is fixed to be one; It is fixed for one that the secondary outlet pipe of underneath type and institute connect secondary exhaust branch pipe, and the outlet of the secondary outlet pipe of up-set type and the secondary outlet pipe of underneath type is connected the inlet that mixer is managed, and the mixer person in charge's outlet connection turbine enters the mouth.
Beneficial effect of the present invention:
The secondary outlet pipe of main exhaust, the secondary outlet pipe of up-set type and underneath type forms three relatively independent zones, and the scavenging interference that the secondary outlet pipe of up-set type connects between the cylinder is little, and the scavenging that the secondary outlet pipe of underneath type connects between the cylinder is disturbed also little.In the cylinder scavenging stage; Extraction flow is little, and the pressure of turbine ingress is lower, and the mixer internal pressure is lower; And the main exhaust internal pressure is higher; The exhaust of one group of cylinder mainly flows to mixer via the secondary outlet pipe of up-set type, and the exhaust of another group cylinder mainly flows to mixer through the secondary outlet pipe of underneath type, can effectively reduce scavenging and disturb.When the exhaust valve aperture was big, because the relative main exhaust cross-section area of secondary exhaust branch pipe cross-section area is little, throttle effect was obvious, and the cylinder exhaust mainly flows into turbine through the main exhaust arm through main exhaust and mixer, improves the pulse energy utilization ratio.Main exhaust of the present invention, the secondary outlet pipe of up-set type and the secondary outlet pipe of underneath type can be made respectively, and be easy to process, and flexible arrangement on motor is applicable to the motor of various cylinder numbers.
Description of drawings
Fig. 1 is a system architecture schematic representation of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the worm's eye view of Fig. 1;
Fig. 4 is the structural representation of mixer of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the present invention on six cylinder machines elaborated, present embodiment is a prerequisite with technological scheme of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4; The present invention includes the secondary outlet pipe of the secondary outlet pipe of main exhaust arm 1, main exhaust 2, secondary exhaust branch pipe 3, up-set type 4, underneath type 5, mixer 6; Mixer 6 is made up of with mixer time pipe 8 the mixer person in charge 7; The inlet of main exhaust arm 1 connects the engine exhaust road, and the outlet of main exhaust arm 1 connects main exhaust 2, and the inlet of secondary exhaust branch pipe 3 connects main exhaust arm 1; The inlet of secondary exhaust branch pipe 3 is the inlet diameter of 0.1～0.5 times of main exhaust arm 1 to the distance of the inlet of main exhaust arm 1; The long-pending ratio range that amasss with main exhaust arm 1 entrance section of the entrance section of secondary exhaust branch pipe 3 is 0.05～0.5, and the outlet of main exhaust 2 links to each other with the mixer person in charge 7 inlet, according to firing order; Cylinder is divided into two groups; It is minimum that scavenging is disturbed, and the main exhaust arm 1 of one group of cylinder connects the secondary outlet pipe 4 of up-set types through secondary exhaust branch pipe 3, and main exhaust arm 1 of another group cylinder connects the secondary outlet pipe 5 of underneath types through secondary exhaust branch pipe 3; It is one that the secondary outlet pipe of up-set type 4 and institute connect secondary exhaust branch pipe 3 fixed; The secondary outlet pipe of underneath type 5 and institute connect that secondary exhaust branch pipe 3 is fixed to be one, and the outlet of the secondary outlet pipe 4 of up-set type and the secondary outlet pipe 5 of underneath type is connected mixer and manages 8 inlet, and the mixer person in charge 7 outlet connection turbine enters the mouth.
Like Fig. 1, shown in Figure 4; With the six-cylinder diesel engine is example; Main exhaust arm 1 from left to right connects the outlet of 1,2,3,4,5,6 cylinder air outlet flues successively; When the firing order of six-cylinder diesel engine is 1-5-3-6-2-4-1, the scavenging interference ratio between 1,2,3 cylinders a little less than, the scavenging interference ratio between 4,5,6 cylinders a little less than; The main exhaust arm 1 that 4,5,6 cylinders are connected connects the secondary outlet pipe 4 of up-set type through secondary exhaust branch pipe 3; 1, the main exhaust arm 1 that connected of 2,3 cylinders connects the secondary outlet pipe 5 of underneath types through secondary exhaust branch pipe 3, and the inlet of secondary exhaust branch pipe 3 connects main exhaust arm 1, and the inlet of secondary exhaust branch pipe 3 is the inlet diameter of 0.25 times of main exhaust arm 1 to the distance of the inlet of main exhaust arm 1; The long-pending ratio that amasss with main exhaust arm 1 entrance section of the entrance section of secondary exhaust branch pipe 3 is 0.11; The outlet of main exhaust 2 links to each other with the mixer person in charge 7 inlet, and the outlet of secondary outlet pipe 4 of up-set type and the secondary outlet pipe 5 of underneath type is connected the inlet of mixer time pipe 8, and the mixer person in charge 7 outlet connects turbine and enters the mouth.
Main exhaust 2, the secondary outlet pipe 4 of up-set type form three relatively independent zones with the secondary outlet pipe 5 of underneath type; The scavenging interference that the secondary outlet pipe 4 of up-set type connects between the cylinder is little, and the scavenging that the secondary outlet pipe 5 of underneath type connects between the cylinder is disturbed also very little.In the cylinder scavenging stage; Extraction flow is little, and the pressure of turbine ingress is lower, and mixer 6 internal pressures are lower; And main exhaust 2 internal pressures are higher; 1, the exhaust of 2,3 cylinders mainly mainly flows to mixer 6 through the secondary outlet pipe 5 of underneath type via the exhaust that the secondary outlet pipe 4 of up-set type flows to mixer 6,4,5,6 cylinders, can effectively reduce scavenging and disturb.When the exhaust valve aperture was big, because relative main exhaust arm 1 cross-section area of secondary exhaust branch pipe 3 cross-section areas is little, throttle effect was obvious, and the cylinder exhaust mainly flows into turbine through main exhaust arm 1 through main exhaust 2 and mixer 6, improves the pulse energy utilization ratio.Main exhaust 2, the secondary outlet pipe 4 of up-set type and the secondary outlet pipe 5 of underneath type are made respectively.
Claims (1)
1. split type secondary exhaust piping turbo charge system; Comprise main exhaust arm (1), main exhaust (2), secondary exhaust branch pipe (3), the secondary outlet pipe of up-set type (4), the secondary outlet pipe of underneath type (5), mixer (6); It is characterized in that mixer (6) is responsible for (7) by mixer and mixer time pipe (8) is formed; The inlet of main exhaust arm (1) connects the engine exhaust road; The outlet of main exhaust arm (1) connects main exhaust (2), and the inlet of secondary exhaust branch pipe (3) connects main exhaust arm (1), and the inlet of secondary exhaust branch pipe (3) is the inlet diameter of 0.1～0.5 times of main exhaust arm (1) to the distance of the inlet of main exhaust arm (1); The long-pending ratio range that amasss with main exhaust arm (1) entrance section of the entrance section of secondary exhaust branch pipe (3) is 0.05～0.5; The outlet of main exhaust (2) links to each other with the inlet that mixer is responsible for (7), according to firing order, cylinder is divided into two groups; The main exhaust arm (1) of one group of cylinder connects the secondary outlet pipe of up-set type (4) through secondary exhaust branch pipe (3); Main exhaust arm (1) of another group cylinder connects the secondary outlet pipe of underneath type (5) through secondary exhaust branch pipe (3), and the secondary outlet pipe of up-set type (4) and institute connect that secondary exhaust branch pipe (3) is fixed to be one, the secondary outlet pipe of underneath type (5) and to connect secondary exhaust branch pipe (3) fixed be one; The outlet of secondary outlet pipe of up-set type (4) and the secondary outlet pipe of underneath type (5) is connected the inlet of mixer time pipe (8), and the outlet that mixer is responsible for (7) connects the turbine inlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101886970A CN102691567A (en) | 2012-06-11 | 2012-06-11 | Split type secondary exhaust pipe system turbo supercharging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101886970A CN102691567A (en) | 2012-06-11 | 2012-06-11 | Split type secondary exhaust pipe system turbo supercharging system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2312331Y (en) * | 1997-11-03 | 1999-03-31 | 上海交通大学 | Mixing type pulsation converter exhaust system |
| CN1598265A (en) * | 2004-08-04 | 2005-03-23 | 湛江海洋大学 | Variable module type impulse sapercharging device of turbocharging diesel engine |
| JP2007056848A (en) * | 2005-08-26 | 2007-03-08 | Toyota Motor Corp | Control device for internal combustion engine |
| CN101149016A (en) * | 2007-11-01 | 2008-03-26 | 上海交通大学 | Gas flow guiding composite pulse conversion turbo supercharging system |
| CN202628246U (en) * | 2012-06-11 | 2012-12-26 | 山东交通学院 | Split type turbine pressurizing system for secondary exhaust pipe system |
-
2012
- 2012-06-11 CN CN2012101886970A patent/CN102691567A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2312331Y (en) * | 1997-11-03 | 1999-03-31 | 上海交通大学 | Mixing type pulsation converter exhaust system |
| CN1598265A (en) * | 2004-08-04 | 2005-03-23 | 湛江海洋大学 | Variable module type impulse sapercharging device of turbocharging diesel engine |
| JP2007056848A (en) * | 2005-08-26 | 2007-03-08 | Toyota Motor Corp | Control device for internal combustion engine |
| CN101149016A (en) * | 2007-11-01 | 2008-03-26 | 上海交通大学 | Gas flow guiding composite pulse conversion turbo supercharging system |
| CN202628246U (en) * | 2012-06-11 | 2012-12-26 | 山东交通学院 | Split type turbine pressurizing system for secondary exhaust pipe system |
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Application publication date: 20120926 |