CN209704692U - A kind of controlled pressurizer exhaust gas bypass system - Google Patents
A kind of controlled pressurizer exhaust gas bypass system Download PDFInfo
- Publication number
- CN209704692U CN209704692U CN201920576460.7U CN201920576460U CN209704692U CN 209704692 U CN209704692 U CN 209704692U CN 201920576460 U CN201920576460 U CN 201920576460U CN 209704692 U CN209704692 U CN 209704692U
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- Prior art keywords
- booster
- cylinder
- exhaust gas
- pipeline
- intercooler
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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 relates to engine reliability and emission performance field more particularly to a kind of controlled pressurizer exhaust gas bypass systems.Including cylinder, turbocharger and intercooler, it further include PWM valve, the cylinder includes cylinder body and the cylinder head that cylinder body upper end is arranged in, the cylinder base of the cylinder is provided with exhaust manifold in communication, booster pressure shell one end is connected to by pipeline with intercooler, and described intercooler one end is connected to by pipeline with cylinder head；Booster pressure shell side is provided with booster actuator, and branch pipe is provided on the pipeline that the intercooler is connected to cylinder head, and the branch pipe, booster pressure shell and booster actuator are connected to PWM valve.The utility model patent keeps WGT exhaust gas by-pass valve controllable, realizes that booster can carry out the aperture regulation of exhaust gas by-pass valve, especially engine in high-load region under any working condition, adjusting exhaust gas bypass valve opening promotes boost pressure.
Description
Technical field
The utility model relates to by engine reliability and emission performance field more particularly to a kind of controlled pressurizer exhaust gas
Way system.
Background technique
As heavy six regulation of state is constantly plus tight to discharging pollutants, heavy vehicle post-processing technology constantly upgrades, major
The mainstream configuration of main engine plants is by engine body band EGR and post-processing uses five engine body of DOC+DPF+SCR surrogate not
Band EGR, post-processing use SCR.For current mainstream heavy type six-cylinder diesel engine, mainly increase with the WGT with exhaust gas by-pass valve
Depressor, but since booster is using over-pressure control, exhaust gas by-pass valve can only be when reaching specific boost pressure
Pressure release could be opened, can bring Railway Project in this way, first, engine is in low speed high load region since boost pressure deficiency is useless
Throughput is smaller so that the lower particle trap DPF that is unable to reach of temperature carries out regenerating required temperature, and DPF is caused to block
Increased risk discharges not up to standard；Second, engine makes booster exhaust gas in high-speed high-load region, enough boost pressures
By-passing valve standard-sized sheet, leading to row's temperature is more than plan boundary, and exhaust system reliability has very big risk.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, adapt to reality and need, and provide a kind of controllable pressurization
Device exhaust gas bypass system.
In order to realize the purpose of this utility model, the technical solution adopted in the utility model are as follows: a kind of controlled pressurizer is useless
Gas bypass system, including cylinder, turbocharger and intercooler 7, further include PWM valve 8, the cylinder include cylinder body 2 and
The cylinder head 1 of 2 upper end of cylinder body is set, and 2 bottom of cylinder body of the cylinder is provided with exhaust manifold 3 in communication, the whirlpool
Upper and lower ends are respectively arranged with supercharger volute 4 and booster pressure shell 6, described 6 one end of booster pressure shell outside wheel booster
It is connected to by pipeline with intercooler 7, described 7 one end of intercooler is connected to by pipeline with cylinder head 1；The booster pressure shell 6 one
Side is provided with booster actuator 5, and branch pipe, the branch pipe, increasing are provided on the pipeline that the intercooler 7 is connected to cylinder head 1
Depressor pressure shell 6 and booster actuator 5 are connected to PWM valve 8.
The branch pipe on pipeline that the intercooler 7 is connected to cylinder head 1 is PWM inter cooling pipeline 9.
The pipeline that the booster pressure shell 6 is connected to PWM valve 8 is air inlet cast aluminium pipe 10.
The pipeline that the booster actuator 5 is connected to PWM valve 8 is PWM valve escape pipe 11.
The utility model has the beneficial effects that:
The utility model patent keeps WGT exhaust gas by-pass valve controllable, realizes that booster can carry out under any working condition
In high-load region, adjusting exhaust gas bypass valve opening mentions boost pressure for the aperture regulation of exhaust gas by-pass valve, especially engine
It rises, extra air takes away the high temperature that burning generates and engine row's temperature is made to be unlikely to excessively high, while engine exhaust flow
Increasing therewith increases DPF inlet temperature is regenerated conducive to particle trap, meets emissions object.
Detailed description of the invention
The utility model is described further with case study on implementation with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is floor map.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples:
Referring to Fig. 1-2.
The utility model discloses a kind of controlled pressurizer exhaust gas bypass system, including cylinder, turbocharger and in
Cooler 7, further includes PWM valve 8, and the cylinder includes cylinder body 2 and the cylinder head 1 that 2 upper end of cylinder body is arranged in, the cylinder of the cylinder
2 bottom of body is provided with exhaust manifold 3 in communication, and upper and lower ends are respectively arranged with booster whirlpool outside the turbocharger
Shell 4 and booster pressure shell 6, described 6 one end of booster pressure shell are connected to by pipeline with intercooler 7, and described 7 one end of intercooler is logical
Piping is connected to cylinder head 1；6 side of booster pressure shell is provided with booster actuator 5, the intercooler 7 and cylinder
Branch pipe is provided on the pipeline that lid 1 is connected to, the branch pipe, booster pressure shell 6 and booster actuator 5 connect with PWM valve 8
It is logical.
The branch pipe on pipeline that the intercooler 7 is connected to cylinder head 1 is PWM inter cooling pipeline 9.
The pipeline that the booster pressure shell 6 is connected to PWM valve 8 is air inlet cast aluminium pipe 10.
The pipeline that the booster actuator 5 is connected to PWM valve 8 is PWM valve escape pipe 11.
Increase a set of PWM control piper newly on the basis of former WGT booster, three interfaces of PWM valve are separately connected engine
Air inlet cast aluminium pipe, pipeline after booster actuator and charge inter cooling adjust PWM valve duty ratio by the instruction that ECU is sent, so that
Pressure and air mix in proportion in this PWM valve after pressure, obtain required pressure, to realize booster exhaust gas by-pass valve
Aperture regulation
As shown in Figure 1, the open and close of this patent exhaust gas by-pass valve use PWM solenoid valve control, tracheae is taken before pressurization
Road takes the fresh air of air inlet cast aluminium pipe, which is located at positive crankcase ventilation (PCV) mouth front end, can effectively avoid crankshaft
Case gaseous contamination causes pipeline blockage, air inlet pipeline after pressurization, and the air after taking charge inter cooling guarantees the sufficiently large energy of gas pressure
Exhaust gas by-pass valve, PWM valve escape pipe are opened, which connect with booster exhaust gas by-pass valve, PWM solenoid valve, for receiving ECU
Electric signal adjust duty ratio control PWM valve door aperture, main control principle be PWM valve receive the letter from ECU
Number, the adjusting of PWM valve aperture is driven, fresh air is mixed at PWM valve with pressurized air, is gone out required for obtaining
The exhaust gas by-pass valve of mouth pressure-driven booster.It is as follows exactly that certain six engine supercharger inlet temperature of heavy state can see hair
Motivation is in the temperature limiting that the inlet temperature of the section revolving speed 1400--1800RPM internal supercharger is more than 700 DEG C.
The engine is negative in height there is also high-load region DOC outlet temperature lower the case where being unfavorable for dpf regeneration simultaneously
The outlet temperature of lotus region DOC causes dpf regeneration under the region difficult already close to 580 DEG C of minimum regeneration temperature limit value.
The utilization of PWM control booster can allow engine to be obviously improved in high-load region boost pressure, can
Increase about 520hpa pressure, extra fresh air make turbocharger inlet temperature be reduced to 700 DEG C of hardware limit value hereinafter,
DOC outlet temperature can effectively be improved by efficiently solving increased exhaust gas flow while engine arranges warm excessively high, solve DPF again
The raw too low problem of temperature.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technical field,
It is also included in the patent protection scope of the utility model.
Claims (4)
1. a kind of controlled pressurizer exhaust gas bypass system, including cylinder, turbocharger (12) and intercooler (7), feature
It is, further includes PWM valve (8), the cylinder includes the cylinder head (1) of cylinder body (2) and setting in cylinder body (2) upper end, described
Cylinder body (2) bottom of cylinder is provided with exhaust manifold in communication (3), the external upper and lower ends point of the turbocharger (12)
It is not provided with supercharger volute (4) and booster pressure shell (6), described booster pressure shell (6) one end passes through pipeline and intercooler
(7) it is connected to, described intercooler (7) one end is connected to by pipeline with cylinder head (1)；Booster pressure shell (6) side is provided with
Booster actuator (5) is provided with branch pipe, the branch pipe, pressurization on the pipeline that the intercooler (7) is connected to cylinder head (1)
Device pressure shell (6) and booster actuator (5) are connected to PWM valve (8).
2. a kind of controlled pressurizer exhaust gas bypass system according to claim 1, it is characterised in that: the intercooler (7)
The branch pipe on pipeline being connected to cylinder head (1) is PWM inter cooling pipeline (9).
3. a kind of controlled pressurizer exhaust gas bypass system according to claim 1, it is characterised in that: the booster pressure shell
(6) pipeline being connected to PWM valve (8) is air inlet cast aluminium pipe (10).
4. a kind of controlled pressurizer exhaust gas bypass system according to claim 1, it is characterised in that: the booster executes
The pipeline that device (5) is connected to PWM valve (8) is PWM valve escape pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576460.7U CN209704692U (en) | 2019-04-25 | 2019-04-25 | A kind of controlled pressurizer exhaust gas bypass system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576460.7U CN209704692U (en) | 2019-04-25 | 2019-04-25 | A kind of controlled pressurizer exhaust gas bypass system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209704692U true CN209704692U (en) | 2019-11-29 |
Family
ID=68650346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920576460.7U Active CN209704692U (en) | 2019-04-25 | 2019-04-25 | A kind of controlled pressurizer exhaust gas bypass system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209704692U (en) |
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2019
- 2019-04-25 CN CN201920576460.7U patent/CN209704692U/en active Active
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