CN209800086U - Gas engine air intake bypass type supercharger control device - Google Patents
Gas engine air intake bypass type supercharger control device Download PDFInfo
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- CN209800086U CN209800086U CN201920463091.0U CN201920463091U CN209800086U CN 209800086 U CN209800086 U CN 209800086U CN 201920463091 U CN201920463091 U CN 201920463091U CN 209800086 U CN209800086 U CN 209800086U
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 83
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000002737 fuel gas Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000002912 waste gas Substances 0.000 description 8
- 238000011217 control strategy Methods 0.000 description 7
- 238000005457 optimization Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Classifications
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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 discloses a gas engine intake bypass type supercharger control device, wherein an engine cylinder is communicated with an intake manifold and an exhaust manifold; the air inlet manifold is communicated with an engine cylinder and an outlet of the mixed gas pipeline; one end of the supercharger is arranged on the exhaust manifold, and the other end of the supercharger is arranged on the mixed gas pipeline; one end of the air pipeline is communicated with an air filter, and the other end of the air pipeline is communicated with an inlet of the mixer; the inlet of the gas pipeline is connected with a gas source, the outlet of the gas pipeline is communicated with the inlet of the mixer, and the middle part of the gas pipeline is provided with an electromagnetic valve and a pressure regulating valve; the mixed gas pipeline is also provided with a throttle valve and a intercooler; a bypass pipeline communicated with the air inlet manifold is also arranged on the mixed air pipeline at the outlet of the mixer, and a supercharging bypass valve and a one-way check valve are arranged on the bypass pipeline; the utility model discloses a reliability is high, dynamic response is good, the effectual engine speed governing performance that has promoted.
Description
Technical Field
The utility model relates to a gas engine control technical field especially relates to a gas engine air intake bypass formula booster controlling means.
Background
With the continuous development and popularization of gas engines in the fields of distributed power generation and vehicles, the supercharging bypass control technology is mature day by day, and the automatic control level is also continuously improved. Common pressure boost bypass control structures include two structures, namely an exhaust bypass structure and an intake bypass structure.
The waste gas bypass type structure is characterized in that a waste gas bypass valve is arranged on the turbine side of the supercharger, when the supercharging pressure of the engine exceeds a set value, the waste gas bypass valve is pushed away, part of waste gas is directly discharged without passing through the turbine, and waste gas for pushing the turbine to do work is reduced, so that the supercharging pressure of the supercharger does not exceed a set value. In the prior art, the wastegate valve is typically actuated by a diaphragm valve that incorporates a spring mechanism and is actuated by compressed air controlled by a solenoid valve, the solenoid valve opening or closing command being provided by the ECU. The control structure of the control technology is complex, the dynamic response is poor, and the supercharging pressure is easy to fluctuate; in addition, the exhaust gas temperature of the engine is high, the requirement on the temperature resistance of the waste gas bypass valve is high, and the failure rate is high.
The other structure is an air inlet bypass type structure, an air inlet bypass valve is arranged on the side of a compressor of the supercharger, when the supercharging pressure of the engine exceeds a set value, the air inlet bypass valve is opened, part of the supercharging gas flows back to the compressor of the supercharger after passing through an intercooler to form internal circulation, and therefore the supercharging pressure of the engine is reduced. In the prior art, the application structure is only available on the gasoline engine for the vehicle, but the application field of the gas engine is still a blank.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas engine bypass type booster controlling means that admits air, engine ECU control the aperture of wastegate valve based on the pressure data that PTP sensor and MAP sensor gathered, control the pressure boost level of turbocharging system, solve bypass type turbocharging control system's drawback of exhaust gas, improve the dynamic responsiveness and the reliability of turbocharging pressure control.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
An air inlet bypass type supercharger control device of a gas engine comprises a mixer, an air pipeline, a gas pipeline and a mixed gas pipeline, wherein the air pipeline and the gas pipeline are communicated with the mixed gas pipeline through an outlet of the mixer; the air inlet manifold is communicated with an engine cylinder and an outlet of the mixed gas pipeline; one end of the supercharger is arranged on the exhaust manifold, and the other end of the supercharger is arranged on the mixed gas pipeline; one end of the air pipeline is communicated with an air filter, and the other end of the air pipeline is communicated with an inlet of the mixer; the inlet of the gas pipeline is connected with a gas source, the outlet of the gas pipeline is communicated with the inlet of the mixer, and the middle part of the gas pipeline is provided with an electromagnetic valve and a pressure regulating valve; the mixed gas pipeline is also provided with a throttle valve and a intercooler; a bypass pipeline communicated with the air inlet manifold is also arranged on the mixed air pipeline at the outlet of the mixer, and a supercharging bypass valve and a one-way check valve are arranged on the bypass pipeline; an intake manifold pressure sensor for measuring the intake pressure of the engine and a pressure sensor in front of a throttle valve for measuring the outlet pressure of the supercharger are respectively arranged on the intake manifold and the mixed gas pipeline; the engine ECU is electrically connected with the booster bypass valve, the intake manifold pressure sensor and the pressure sensor in front of the throttle valve respectively.
As a further optimization of the utility model, the mixer is a Venturi structure mixer.
As a further optimization of the present invention, the supercharger comprises a supercharging turbine and a supercharging compressor.
As a further optimization of the utility model, the booster bypass valve is 4 ~ 20mA driven position formula electrical control valve
As the utility model discloses a further optimization still provides a gas engine, has adopted gas engine air intake bypass formula booster controlling means.
As the utility model discloses a further optimization, blender import and export are the flange structure.
As the utility model discloses a further optimization, air pipeline, gas pipeline and gas mixture pipeline are steel tube construction.
A control method for an air inlet bypass type supercharger of a gas engine comprises the following steps:
The engine ECU receives pressure signals P1 and P2 measured by the pressure sensor in front of the throttle valve and the pressure sensor in the intake manifold, the engine ECU outputs a 4-20 mA signal to adjust the booster bypass valve according to the pressure difference between P1 and P2 so as to realize boost control, and the one-way check valve is opened when the engine intake pressure P2 is higher than the inlet pressure P1 of the supercharger.
Adopt the utility model discloses a beneficial effect of production does:
1. Compared with an exhaust gas bypass type pressurization control system: the bypass valve does not have the service life and sealing performance reduced due to long-term high-temperature ablation, and the reliability is higher; compared with the waste gas quantity entering the supercharging turbine controlled by the waste gas bypass type supercharging control system, the dynamic response performance is better, and the change of the engine load can be responded more quickly.
2. Compare with current formula of admitting air pressure boost control system: the prior art generally takes throttle inlet pressure as a control target, and does not consider boost pressure of an intake manifold of an engine behind a throttle valve, and the disadvantage of the prior art is that the speed regulating performance of the throttle valve can be poor. The utility model discloses with pressure differential between MAP, PTP and the MAP is the control objective, can promote the speed governing performance of throttle valve by a wide margin to can let the booster operate in the high efficiency district effectively.
3. the utility model discloses but wide application in all kinds of gas engines such as natural gas, marsh gas and gas, have that dynamic response is good, the characteristics that the reliability is high, can promote engine speed governing performance simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-air filter, 2-electromagnetic valve, 3-pressure regulating valve, 4-mixer, 5-supercharger, 6-pressure sensor before throttle valve, 7-throttle valve, 8-intercooler, 9-booster by-pass valve, 10-one-way check valve, 11-engine ECU, 12-intake manifold, 13-intake manifold pressure sensor, 14-exhaust manifold.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
An air inlet bypass type supercharger control device of a gas engine comprises a mixer 4, an air pipeline, a gas pipeline and a mixed gas pipeline, wherein the air pipeline and the gas pipeline are communicated with the mixed gas pipeline through an outlet of the mixer 4, and the supercharger control device is characterized in that an engine cylinder is communicated with an air inlet manifold 12 and an exhaust manifold 14; the intake manifold 12 communicates with the engine cylinder and the outlet of the mixed gas pipeline; one end of the supercharger is arranged on the exhaust manifold 14, and the other end of the supercharger is arranged on the mixed gas pipeline; one end of the air pipeline is communicated with an air filter 1, and the other end of the air pipeline is communicated with an inlet of a mixer 4; the inlet of the gas pipeline is connected with a gas source, the outlet of the gas pipeline is communicated with the inlet of the mixer 4, and the middle part of the gas pipeline is provided with an electromagnetic valve 2 and a pressure regulating valve 3; the mixed gas pipeline is also provided with a throttle valve 7 and a intercooler 8; a bypass pipeline communicated with an air inlet manifold 12 is further arranged on the mixed air pipeline at the outlet of the mixer 4, and a supercharging bypass valve 9 and a one-way check valve 10 are arranged on the bypass pipeline; an intake manifold pressure sensor 13 for measuring the intake pressure of the engine and a pressure sensor 6 in front of a throttle valve for measuring the outlet pressure of the supercharger are respectively arranged on the intake manifold 12 and the mixed gas pipeline; also included is an engine ECU11, the engine ECU11 being electrically connected to the booster bypass valve 9, the intake manifold pressure sensor 13, and the pre-throttle pressure sensor 6, respectively.
A supercharger 5 in the gas engine air inlet bypass type supercharger control device comprises a supercharging turbine and a supercharging compressor.
Air cleaner 1 with the air inlet flange of blender 4 passes through the steel pipe connection, and blender 4 adopts venturi structure blender, utilizes the venturi effect to make gas and air mix, and the mixing of gas and air adopts the pre-mixing mode before the pressure boost in the system.
The electromagnetic valve 2 is connected with the pressure regulating valve 3 through a steel pipe to form a fuel gas cutting and pressure regulating system. The pressure regulating valve 3 is connected with a gas inlet flange of the mixer 4 through a steel pipe to form a gas inlet loop.
An outlet flange of the mixer 4 is connected with a compressor of the supercharger 5 through a steel pipe, the compressor of the supercharger 5 is connected with the throttle valve 7 through a steel pipe, and the throttle valve 7 is connected with the intercooler 8 through a steel pipe. The booster bypass valve 9 is connected with the one-way check valve 10 through a steel pipe to form a one-way bypass loop, one end of the one-way bypass loop is connected with a main pipeline behind an outlet flange of the mixer 4 through the steel pipe, and the other end of the one-way bypass loop is connected with a main pipeline behind the intercooler 8 through the steel pipe to form an engine air inlet bypass type boosting system.
In the engine intake bypass type supercharging system, the supercharging bypass valve 9 can be an electric regulating valve driven by 4-20 mA.
The pre-throttle pressure sensor (PTP)6 is used to measure the supercharger 5 outlet pressure P1, the intake manifold pressure sensor (MAP) 13 is used to measure the engine intake pressure P2, and since the boost bypass system is provided with the one-way check valve 10, the one-way check valve 10 opens only when the engine intake pressure P2 is higher than the supercharger inlet pressure P1.
The engine ECU11 is connected with the PTP and MAP pressure signals, and the engine ECU11 outputs 4-20 mA signals to adjust the booster bypass valve 9 according to the pressure difference among the MAP, the PTP and the MAP, so that the control of the boost level of the booster bypass system is realized.
The gas engine is provided with the intake bypass type supercharging control system.
compared with an exhaust gas bypass type pressurization control system, the pressurization bypass valve 9 cannot reduce the service life and the sealing performance due to long-term high-temperature ablation, and the reliability is higher; the intake bypass type supercharging control system directly controls the air intake amount of the engine intake manifold 12, compared with the exhaust bypass type supercharging control system which controls the amount of exhaust gas entering a supercharging turbine, the dynamic response performance is better, and the change of the engine load can be responded more quickly.
Compared with the existing air intake type supercharging control system, the prior art generally takes throttle inlet pressure as a control target, and does not consider the supercharging pressure of an intake manifold of an engine behind a throttle, so that the disadvantage is that the speed regulating performance of the throttle is possibly poor. The utility model discloses with pressure differential between MAP, PTP and the MAP is the control objective, can promote throttle valve 7's speed governing performance by a wide margin to can let booster 5 operate in the high efficiency district effectively.
Referring to fig. 1: the utility model provides a gas engine bypass type pressure boost control system that admits air has consulted the advantage and disadvantage of current pressure boost bypass control technique, has optimized control structure and control strategy, the utility model discloses a pressure boost bypass control system reliability is high, dynamic response is good, has also played the key effect to the promotion of engine speed governing performance.
As shown in fig. 1, in the present invention: after the engine is started, air is filtered through the air filter 1 and enters an air inlet of the mixer 4 after being filtered; the gas enters the pressure regulating valve 3 after passing through the electromagnetic valve 2, is reduced in pressure by the pressure regulating valve 3 and then enters the gas inlet of the mixer 4. The air entering the mixer 4 is mixed with fuel gas and then flows out, the mixed gas with the pressure of P0 is pressurized through the supercharger 5, a pressure sensor (PTP)6 in front of a throttle valve is arranged behind the compressor of the supercharger 5, the pressurized mixed gas with the pressure of P1 is subjected to throttle control of a throttle valve 7 and then is cooled through an intercooler 8, and then enters an engine cylinder body through an engine air inlet manifold 12, an air inlet manifold pressure sensor (MAP) 13 is arranged on the engine air inlet manifold, the air inlet pressure in the air inlet manifold is P2, and engine tail gas is exhausted through an engine exhaust manifold 14 and is exhausted to the atmospheric environment through a turbine of the supercharger 5.
As shown in fig. 1, in the present invention: a bypass outlet is arranged on a pipeline behind the intercooler 8, and the mixed gas after the intercooler passes through a one-way check valve 10 and then is converged into a main pipeline behind the mixer 4 (in front of the supercharger 5) through a booster bypass valve 9 to form a one-way booster bypass loop. Due to the one-way check valve 10, the charge bypass circuit is active only when P2 is higher than P0, i.e. the charge bypass control system is inactive when the engine is operating at low load.
As shown in fig. 1, in the present invention: the engine ECU11 collects the post-boost pressure P1 and the intake manifold pressure P2, and may make different boost bypass control strategies depending on the application of the engine. The first control strategy is: use intake manifold pressure P2 as the control objective, reach the pressure boost level of demarcation through control pressure boost bypass valve 9, because the utility model discloses a pressure boost bypass control can promote fast or reduce intake manifold pressure, and this control strategy mainly is applied to the higher occasion of engine dynamic response requirement. The second control strategy is: the control strategy can improve the speed regulation stability of the engine, optimize the running curve of the supercharger, improve the wide adaptability of the supercharger and reduce the design risk of the supercharger model selection by taking the pressure difference between the supercharged pressure P1 and the pressure P2 as a control target and controlling the supercharged bypass valve 9 to achieve the calibrated pressure difference. The second control strategy may be selected for general engine application.
The summary of the utility model discloses gas engine air inlet bypass type booster control method includes the following step:
The engine ECU11 receives pressure signals P1 and P2 measured by the pressure sensor 6 in front of the throttle valve and the pressure sensor 13 in the intake manifold, the engine ECU11 outputs a 4-20 mA signal to adjust the booster bypass valve 9 according to the pressure difference between P1 and P2 so as to realize boost control, and the one-way check valve 10 is opened when the engine intake pressure P2 is higher than the inlet pressure P1 of the booster.
The utility model discloses a gas engine air intake bypass formula booster controlling means can be by all kinds of gas engine such as wide application in natural gas, marsh gas and gas, has the characteristics that dynamic response is good, the reliability is high, can promote engine speed governing performance simultaneously.
the foregoing is a more detailed description of the present invention taken in conjunction with the accompanying drawings, which are not intended to limit the invention to the particular embodiments described herein. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to be within the scope of the invention as determined by the claims as filed.
Claims (7)
1. An air inlet bypass type supercharger control device of a gas engine comprises a mixer (4), an air pipeline, a gas pipeline and a mixed gas pipeline, wherein the air pipeline and the gas pipeline are communicated with the mixed gas pipeline through an outlet of the mixer (4), and is characterized in that an engine cylinder is communicated with an air inlet manifold (12) and an exhaust manifold (14); the intake manifold (12) is communicated with an engine cylinder and an outlet of a mixed gas pipeline; one end of the supercharger is arranged on the exhaust manifold (14), and the other end of the supercharger is arranged on the mixed gas pipeline; one end of the air pipeline is communicated with an air filter (1), and the other end of the air pipeline is communicated with an inlet of a mixer (4); the inlet of the gas pipeline is connected with a gas source, the outlet of the gas pipeline is communicated with the inlet of the mixer (4), and the middle part of the gas pipeline is provided with an electromagnetic valve (2) and a pressure regulating valve (3); the mixed gas pipeline is also provided with a throttle valve (7) and a intercooler (8); a bypass pipeline communicated with an air inlet manifold (12) is also arranged on the mixed air pipeline at the outlet of the mixer (4), and a booster bypass valve (9) and a one-way check valve (10) are arranged on the bypass pipeline; an intake manifold pressure sensor (13) for measuring the intake pressure of the engine and a front throttle pressure sensor (6) for measuring the outlet pressure of the supercharger are respectively arranged on the intake manifold (12) and the mixed gas pipeline; the engine ECU (11) is respectively and electrically connected with the booster bypass valve (9), the intake manifold pressure sensor (13) and the pressure sensor (6) in front of the throttle valve.
2. The gas engine intake bypass supercharger control apparatus according to claim 1, wherein: the mixer (4) is a Venturi structure mixer.
3. The gas engine intake bypass supercharger control apparatus according to claim 1, wherein: the supercharger comprises a supercharging turbine and a supercharging compressor.
4. The gas engine intake bypass supercharger control apparatus according to claim 1, wherein: the booster bypass valve (9) is a 4-20 mA-driven position type electric regulating valve.
5. The gas engine intake bypass supercharger control apparatus according to claim 1, wherein: the inlet and the outlet of the mixer (4) are of flange structures.
6. The gas engine intake bypass supercharger control apparatus according to claim 1, wherein: the air pipeline, the fuel gas pipeline and the mixed gas pipeline are of steel pipe structures.
7. A gas engine, characterized in that the gas engine intake bypass supercharger control device as claimed in any one of claims 1 to 6 is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920463091.0U CN209800086U (en) | 2019-04-08 | 2019-04-08 | Gas engine air intake bypass type supercharger control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920463091.0U CN209800086U (en) | 2019-04-08 | 2019-04-08 | Gas engine air intake bypass type supercharger control device |
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| Publication Number | Publication Date |
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| CN209800086U true CN209800086U (en) | 2019-12-17 |
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| CN201920463091.0U Active CN209800086U (en) | 2019-04-08 | 2019-04-08 | Gas engine air intake bypass type supercharger control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267963A (en) * | 2020-11-12 | 2021-01-26 | 湖南省力宇燃气动力有限公司 | Air inlet system, gas engine and air inlet method |
| CN115962050A (en) * | 2022-12-26 | 2023-04-14 | 江西洪都航空工业集团有限责任公司 | Air flow adjusting mechanism with pressure sensing and bypass switching functions |
-
2019
- 2019-04-08 CN CN201920463091.0U patent/CN209800086U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267963A (en) * | 2020-11-12 | 2021-01-26 | 湖南省力宇燃气动力有限公司 | Air inlet system, gas engine and air inlet method |
| CN115962050A (en) * | 2022-12-26 | 2023-04-14 | 江西洪都航空工业集团有限责任公司 | Air flow adjusting mechanism with pressure sensing and bypass switching functions |
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Effective date of registration: 20200528 Address after: 710000 building 11031-03, Beihang Science Park, No. 588, Feitian Road, Xi'an national civil aerospace industry base, Shaanxi Province Patentee after: Xi'an Kemei Power Technology Co., Ltd Address before: 710100 room 603, 1 building, North Air Technology Park, 588 Feitian Road, Xi'an, Shaanxi. Patentee before: XI'AN AEROSPACE BASE SIPU POWER TECHNOLOGY Co.,Ltd. |