CN208669418U - A kind of piston engine turbocharger control mechanism - Google Patents
A kind of piston engine turbocharger control mechanism Download PDFInfo
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- CN208669418U CN208669418U CN201821289437.1U CN201821289437U CN208669418U CN 208669418 U CN208669418 U CN 208669418U CN 201821289437 U CN201821289437 U CN 201821289437U CN 208669418 U CN208669418 U CN 208669418U
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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 kind of piston engine turbocharger control mechanisms, including engine body and exhaust-driven turbo-charger exhaust-gas turbo charger, inlet manifold and exhaust manifold are equipped on the engine body, it is characterized by: the inlet manifold is equipped with the pressure sensor of sensing admission pressure, the pressure sensor connection outputs signal to ECU controller, the aperture for the exhaust gas by-pass valve that the ECU controller is set in gas exhaust piping by step motor control enters the exhausted air quantity of the exhaust-driven turbo-charger exhaust-gas turbo charger to control, and then realizes regulation admission pressure.The utility model this piston engine turbocharger control mechanism, overall structure simplify, and degree of regulation is high, response is fast, charge-air boost pressure fluctuation is small, with good application prospect.
Description
Technical field
The utility model belongs to technical field of engines, more specifically to a kind of piston engine turbocharger
Control mechanism.
Background technique
Booster is a kind of air compressor, increases air inflow by compressed air, living in automobile engine and aviation
It is widely used on piston engine, to improve the efficiency of combustion and power per liter of engine, and improves the altitude of aviation engine
Energy.
Intensifier type has turbocharged edition, engine driven supercharging formula and exhaust gas turbocharge to mix with engine driven supercharging
Formula, most commonly used at present is turbocharged edition, referred to as turbocharger.Turbocharger is mainly by turbine, compressor
It is formed with control mechanism three parts, turbine and compressor are coaxial blade mechanism.Its working principle is that: high temperature and pressure is given up
Gas (combustion gas) enters turbine by exhaust gas by-pass valve, and exhaust gas expands workmanship in turbine, drives turbine rotation, and compressor utilizes
Turbine function carries out compression workmanship to the air for entering compressor, and the air after compressing enters engine.Turbocharger passes through
Engine charge pressure and density are improved to improve the efficiency of combustion and power per liter of engine, for aviation engine,
Also have the function of promoting its high-level performance.
The three parts of turbocharger: turbine, compressor and control mechanism.Control mechanism includes sensor, controller
And actuator, effect are to control the size of charge-air boost pressure by adjusting the aperture of exhaust gas by-pass valve.Exhaust gas by-pass valve
Aperture is bigger, and the exhaust gas being directly drained off is more, and the exhaust gas into turbocharger volute part is fewer, so turbine function is few,
Charge-air boost pressure is with regard to small.Conversely, exhaust gas bypass valve opening is smaller, charge-air boost pressure is bigger.Currently, exhaust-driven turbo-charger exhaust-gas turbo charger
The controller of control mechanism uses mechanical bellows-type mostly, and one end of bellows interior diaphragm is connected to the first port of pressurization, by pressure
Pressure is generated to diaphragm by force.The other end is the push rod and return spring for connecting exhaust gas by-pass valve.Boost pressure is more than a fixed limit
System then overcomes spring force that push rod is pushed to control exhaust gas by-pass valve and deflates and (only realize defencive function) by diaphragm.Cause cannot be with control
System stroke closed-loop control processed, control precision is lower, and because control model is too simple, the matching of booster and engine cannot
Each power section is looked after, the performance of engine performance is affected.Simultaneously in plateau (pressurization one end pressure from sea level when different), height
It is affected under temperature (atmospheric density is different) environment.Back pressure response slowly, needs certain time to reach balance again after deflation.Compared with
A kind of new control model increases an automatically controlled triple valve on the original basis, the air (one being respectively communicated with after pressurization
As for inlet manifold or pressure stabilizing cavity), the atmosphere under current environment and bellows room.Because the power of driving exhaust gas by-pass valve is from pressurization
Pressure, this configuration are referred to as the configuration " based on pressurization ".Electrocontrolled tee valve can receive ecu signal, and control will be pressurized one
End or atmosphere one end are connected to bellows, and then control pressurization or deflate.Such configuration improves purely mechanic bellows to a certain extent
The drawbacks of formula controls.But because such configure the pressurization control for being still based on pressurization.Atmospheric pressure with height above sea level or weather conditions and
Variation, will affect the pressure difference between pressurization and atmosphere, influence the ability of control pressurization.It controls and increases furthermore with exhaust gas by-pass valve
Pressure and the circulation that exhaust gas by-pass valve is driven using pressurization, it is meant that control pressurization and drive the exhaust gas based on pressurization using pressurization
There is close inner link between by-passing valve, so that the operating of exhaust gas by-pass valve can not be predicted with ideal state.
Utility model content
The purpose of this utility model be solve the problems, such as it is of the existing technology, provide a kind of structure is simple, degree of regulation is high,
Response is fast, charge-air boost pressure fluctuates small piston engine turbocharger control mechanism.
To achieve the goals above, the technical solution that the utility model is taken are as follows: provided this piston engine is used
Turbocharger control mechanism, including engine body and exhaust-driven turbo-charger exhaust-gas turbo charger are equipped with air inlet on the engine body
Manifold and exhaust manifold, it is characterised in that: the inlet manifold is equipped with the pressure sensor of sensing admission pressure, the pressure
Sensor connection outputs signal to ECU controller, and the ECU controller is set to useless in gas exhaust piping by step motor control
The aperture of gas by-passing valve enters the exhausted air quantity of the exhaust-driven turbo-charger exhaust-gas turbo charger to control, and then realizes regulation admission pressure.
To keep above-mentioned technical proposal more detailed and specific, the utility model also provides optimization technique further below
Scheme, to obtain satisfied practical function:
The exhaust-driven turbo-charger exhaust-gas turbo charger includes turbine and compressor, and the exhaust manifold is connected to the turbine, the pressure
Mechanism of qi is connected to the inlet manifold.
The exhaust manifold is connected to the turbine by exhaust manifold, is equipped in the exhaust manifold and is connected to exhaust
Branch line in pipeline, the exhaust gas by-pass valve are set on the branch line.
The stepper motor connects the exhaust gas by-pass valve by tappet.
The shaft for stating the folding of exhaust gas by-pass valve control valve is equipped with rocker arm.
One end of the tappet is connected through a screw thread with the stepper motor output end, the hinged rocker arm of the other end.
This piston engine of the utility model compared with prior art, has following excellent with turbocharger control mechanism
Point: the utility model this piston engine turbocharger control mechanism, overall structure simplify, and degree of regulation is high, rings
Fast, charge-air boost pressure is answered to fluctuate small, with good application prospect.
Detailed description of the invention
The label in content and figure expressed by the attached drawing to this specification is briefly described below:
Fig. 1 is the utility model turbocharger control mechanism schematic illustration；
Fig. 2 is the utility model turbocharger arrangement schematic diagram；
Fig. 3 is tappet and stepper motor attachment structure schematic diagram；
Fig. 4 the utility model control method flow diagram.
In the figure, it is marked as 1, pressure sensor, 2, inlet manifold, 3, engine body, 4, ECU controller, 5, exhaust discrimination
Pipe, 6, exhaust gas by-pass valve, 7, stepper motor, 8, turbine, 9, compressor, 10, tappet, 11, rocker arm.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present utility model further detailed
Thin explanation.
The utility model this piston engine turbocharger control mechanism, as shown in Figure 1, 2, including engine sheet
Body 3 and exhaust-driven turbo-charger exhaust-gas turbo charger, are equipped with inlet manifold 2 and exhaust manifold 5 on engine body, and inlet manifold 2 is equipped with sense
The pressure sensor 1 of admission pressure is surveyed, the connection of pressure sensor 1 outputs signal to ECU controller 4, and ECU controller 4 passes through step
The exhausted air quantity into exhaust-driven turbo-charger exhaust-gas turbo charger is controlled into the aperture of exhaust gas by-pass valve 6 of the motor control in gas exhaust piping,
And then realize regulation admission pressure.The purpose of this utility model is that simplify the control mechanism structure of turbocharger of motor,
Improving performance is not mainly improved the control precision and response speed of system, by atmospheric pressure variations influence so as to according to hair
The different operating conditions of motivation are timely, accurately adjust charge-air boost pressure size.
It can be using straight line screw rod stepper motor or common stepper motor as the executing agency of controlling opening of valve, directly by sending out
Motivation electronic control unit ECU controller 4 controls stepper motor 7, relieves control pressurization and using pressurization driving base
Inner link between the exhaust gas by-pass valve 6 of pressurization.This control mechanism structure is simple, degree of regulation is high, response is fast, air inlet
Boost pressure fluctuation is small.And directly participated in because not needing atmospheric pressure, therefore not because of any environmental influence degree of regulation.
In the utility model, as shown in Figure 1, 2, exhaust-driven turbo-charger exhaust-gas turbo charger includes turbine 8 and compressor 9, and exhaust manifold 5 connects
It is connected to turbine 8, compressor 9 is connected to inlet manifold 2.Exhaust manifold 5 is connected to turbine 8 by exhaust manifold, in exhaust manifold
It is equipped with the branch line being connected in gas exhaust piping, exhaust gas by-pass valve 6 is set on branch line.As shown by the arrows in Figure 1, it is
Airflow direction, the gas of inlet end is pressurized through compressor 9 is delivered to engine by inlet manifold 2；The exhaust gas of 5 row of exhaust manifold passes through
Inlet end is connected to by compressor 9 after the pressurization of turbine 8, is controlled by controlling the aperture of exhaust gas by-pass valve 6 into the useless of turbine 8
Tolerance obtains suitable admission pressure to realize control plenum.
In the utility model, stepper motor 7 connects exhaust gas by-pass valve 6 by tappet 10.6 control valve of exhaust gas by-pass valve is opened
The shaft of conjunction is equipped with rocker arm 11.As shown in figure 3, one end of tappet 10 is connected through a screw thread with 7 output end of stepper motor, it is another
Hold hinged rocker arm 11.The angular displacement that stepper motor 7 exports is converted into tappet 10 by being threadedly coupled between tappet 10
Linear displacement, tappet 10 again converts linear displacement to the angular displacement of rocker arm 11, to control the different opening of exhaust gas by-pass valve 6.
Realize that stepper motor 7 controls exhaust gas by-pass valve 6 and opens and closes size with the mechanical transmission.
The control method of piston engine turbocharger control mechanism, as shown in figure 4, including the following steps:
1) 4 target pressure value of ECU controller is set, i.e., charge-air boost pressure needed for determining according to engine operation condition
Value；
2) pressure sensor 1 measures currently practical boost pressure value, and data are transmitted an ECU controller 4；
3) ECU controller 4 calculates the displacement of stepper motor 7 according to required boost pressure value and actual supercharge pressure value
Amount, and signal is passed into stepper motor 7；
4) 7 structure ECU controller of stepper motor, 4 signal, carries out corresponding moving displacement；
5) movement of stepper motor 7 drives exhaust gas by-pass valve 6 by tappet 10 and rocker arm 11, realizes control exhaust gas by-pass valve
6 aperture.
The utility model piston engine turbocharger control mechanism mainly includes engine body 3, exhaust gas turbine
Booster, exhaust gas by-pass valve 6, inlet manifold 2, exhaust manifold 5, pressure sensor 1, ECU controller 4, stepper motor 7, tappet
10, rocker arm 11.
Arrow as shown in Figure 1 indicates gas flow direction, and dotted line indicates the connection between electric elements, in double dot dash line
It is exhaust-driven turbo-charger exhaust-gas turbo charger, including compressor 9 and turbine 8.
Shown according to following Fig. 1 the utility model principle schematic diagram and Fig. 2 the utility model exhaust-driven turbo-charger exhaust-gas turbo charger structure
The utility model is described in detail in intention: pressure sensor 1, inlet manifold 2, engine body 3, ECU controller 4,
Exhaust manifold 5, exhaust gas by-pass valve 6, stepper motor 7, booster turbine 8, supercharger air compressor 9, tappet 10, rocker arm 11.Fig. 3 is
The utility model exhaust gas by-pass valve execution part partial schematic diagram, 7 one end of stepper motor are screw rod, and 10 one end of tappet is screw thread
Hole is threadedly coupled between stepper motor 7 and tappet 10.
In the utility model, for turbocharged engine, there is a target inlet air pressurization pressure under each difference operating condition
Force value, according to the aperture (i.e. the angular displacement of stepper motor) for the exhaust gas by-pass valve 6 that this goal pressure determines.Determine exhaust gas bypass
6 aperture of valve, specifically includes, and obtains current manifold pressure value by pressure sensor 1, ECU controller 4 according to currently practical pressure with
Target pressure value obtains pressure value difference, and measured pressure value and target pressure value are analyzed and compared, by two above pressure
Power difference is converted into the angular displacement aim parameter of stepper motor 7, and the duty cycle of control stepper motor 7, is sent by ECU
The movement of PMW wave (pulse pulse width modulation) control stepper motor 7.Stepper motor 7 export angular displacement by with tappet 10 it
Between threaded connection be converted into the linear displacement of tappet 10, tappet 10 again converts linear displacement to the angular displacement of rocker arm 11, with
Control the different opening of exhaust gas by-pass valve 6.Motor directly exports the straight-line displacement of screw rod when using straight line screw rod stepper motor
Drive rocker arm 11.
In the utility model, toward when one angular displacement of clockwise drift, the aperture of exhaust gas by-pass valve 6 becomes rocker arm 11
Greatly, the exhaust gas being directly discharged in atmosphere by branch line increases, and is reduced by the exhaust gas that main line enters turbine 8, so
Turbine function is reduced, i.e., reduces for 9 power of compressor of super charge, so charge-air boost pressure is reduced.Conversely, rocker arm 11 is past
An angular displacement is counterclockwise deviated, charge-air boost pressure increases.
The technical characteristic that should be understood that stepper motor under current averaging level, by taking straight line screw rod stepper motor as an example: electricity
The motor of machine pedestal contour dimension 28mm can provide the lead of maximum 12mm and the thrust of 12KG.
The utility model this piston engine turbocharger control mechanism, overall structure simplify, degree of regulation
Height, response is fast, charge-air boost pressure fluctuation is small, with good application prospect.
The utility model is exemplarily described above in conjunction with attached drawing, but the utility model be not limited to it is above-mentioned
Mode, as long as the improvement or directly application of the various unsubstantialities carried out using the method concept and technical solution of the utility model
In other occasions, all fall in the protection scope of the utility model.
Claims (6)
1. a kind of piston engine turbocharger control mechanism, including engine body and exhaust-driven turbo-charger exhaust-gas turbo charger, in institute
Engine body is stated equipped with inlet manifold and exhaust manifold, it is characterised in that: the inlet manifold is equipped with sensing air inlet pressure
The pressure sensor of power, the pressure sensor connection output signal to ECU controller, and the ECU controller passes through stepping electricity
The aperture of the exhaust gas by-pass valve that machine control is set in gas exhaust piping controls the exhausted air quantity into the exhaust-driven turbo-charger exhaust-gas turbo charger, into
And realize regulation admission pressure.
2. piston engine described in accordance with the claim 1 turbocharger control mechanism, it is characterised in that: the exhaust gas whirlpool
Taking turns booster includes turbine and compressor, and the exhaust manifold is connected to the turbine, and the compressor is connected to the air inlet
Manifold.
3. piston engine turbocharger control mechanism according to claim 2, it is characterised in that: the exhaust discrimination
Pipe is connected to the turbine by exhaust manifold, and the branch line being connected in gas exhaust piping is equipped in the exhaust manifold,
The exhaust gas by-pass valve is set on the branch line.
4. piston engine described in accordance with the claim 3 turbocharger control mechanism, it is characterised in that: the stepping electricity
Machine connects the exhaust gas by-pass valve by tappet.
5. piston engine turbocharger control mechanism according to claim 4, it is characterised in that: by the exhaust gas
The shaft of port valve control valve folding is equipped with rocker arm.
6. piston engine turbocharger control mechanism according to claim 5, it is characterised in that: the tappet
One end is connected through a screw thread with the stepper motor output end, the hinged rocker arm of the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821289437.1U CN208669418U (en) | 2018-08-10 | 2018-08-10 | A kind of piston engine turbocharger control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821289437.1U CN208669418U (en) | 2018-08-10 | 2018-08-10 | A kind of piston engine turbocharger control mechanism |
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| Publication Number | Publication Date |
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| CN208669418U true CN208669418U (en) | 2019-03-29 |
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ID=65836831
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| CN201821289437.1U Active CN208669418U (en) | 2018-08-10 | 2018-08-10 | A kind of piston engine turbocharger control mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757158A (en) * | 2018-08-10 | 2018-11-06 | 芜湖钻石航空发动机有限公司 | A kind of piston engine turbocharger control mechanism and its control method |
-
2018
- 2018-08-10 CN CN201821289437.1U patent/CN208669418U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757158A (en) * | 2018-08-10 | 2018-11-06 | 芜湖钻石航空发动机有限公司 | A kind of piston engine turbocharger control mechanism and its control method |
| CN108757158B (en) * | 2018-08-10 | 2023-09-19 | 芜湖钻石航空发动机有限公司 | Turbocharger control mechanism for piston engine and control method thereof |
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