CN210599177U - Linear stroke electronic actuator type turbocharger - Google Patents
Linear stroke electronic actuator type turbocharger Download PDFInfo
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- CN210599177U CN210599177U CN201921224578.XU CN201921224578U CN210599177U CN 210599177 U CN210599177 U CN 210599177U CN 201921224578 U CN201921224578 U CN 201921224578U CN 210599177 U CN210599177 U CN 210599177U
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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 is suitable for an engine technical field provides a turbocharger, turbocharger includes straight line stroke electronic actuator, straight line stroke electronic actuator sets up in the top of compressor housing, straight line stroke electronic actuator includes driving motor and output push rod; the waste gas valve cover crank of the waste gas bypass assembly is connected with the output push rod of the linear stroke electronic actuator through a connecting rod assembly comprising at least two connecting rods, the output push rod is driven by the driving motor to do linear reciprocating motion, the output push rod drives the connecting rod assembly to drive the waste gas valve cover crank to move, and the opening size of the waste gas valve cover is controlled, so that the amount of waste gas entering the turbine chamber is controlled.
Description
Technical Field
The utility model belongs to the technical field of the engine, especially, relate to a linear stroke electron executor formula turbo charger.
Background
The working principle of the turbocharger is as follows: the exhaust gas discharged by the engine enters a turbine chamber to drive a turbine of the turbocharger to rotate, the compressor impeller on the other side is synchronously driven to rotate, the compressor impeller forcibly sucks air from an inlet of the compressor, the air is compressed by the rotation of blades of the compressor and then enters a diffusion passage with the increasingly larger pipe diameter to flow out, and the compressed air is injected into a cylinder to be mixed and combusted with fuel oil in the engine. In the same unit time, more air and fuel mixture can be forced to be squeezed into the cylinder to carry out compression explosion action, the power and the torque of the engine can be greatly improved without increasing the engine displacement compared with a natural air inlet engine under the same rotating speed, and generally, the power and the torque of the engine with the supercharger are increased by 20 to 30 percent.
To achieve higher emission levels in an engine, it is desirable to control the amount of air and gasoline mixture entering the engine cylinders from the turbocharger with greater accuracy. The disadvantage of turbochargers is that the lag, i.e. the delay in increasing or decreasing the output power of the engine due to the inertia of the impeller reacting slowly to sudden changes in throttle, is somewhat ineffective for a vehicle that is to suddenly accelerate or overtake. The air entering an engine cylinder from a turbocharger on a diesel engine can accurately control the air inflow entering a turbine chamber by controlling the opening degree of a variable-section nozzle ring (also called VNT) in the turbocharger, so that the rotating speed of the turbine and a compressor wheel is controlled, the accurate control of the air amount entering the engine cylinder is realized, fuel is fully combusted, the emission of harmful gas is reduced, and the higher emission standard is reached. Meanwhile, the high boost pressure of the engine at low speed is ensured, the effective torque is improved, and the boost pressure of the engine near a rated working point can be ensured not to be too high, so that the overhigh mechanical pressure of the engine and the overspeed of the turbocharger are avoided, the knocking is effectively avoided, and the transient response during acceleration can be increased.
However, since the exhaust temperature of gasoline engine is above 1000 ℃ and the exhaust temperature of diesel engine is about 750 ℃, if the turbocharger of gasoline engine adopts the variable section nozzle ring of diesel engine, the temperature resistance of the variable section nozzle ring material at least needs to reach above 00 ℃, and both the manufacturing process and the cost are greatly increased.
At present, a turbocharger of a gasoline engine aims to control the opening size of an exhaust valve cover by using a pneumatic actuator or a rotary electronic actuator so as to control the amount of exhaust gas entering a turbine chamber. The pneumatic actuator pushes the diaphragm by inputting certain air pressure so as to drive the pull rod of the actuator to move to control the opening size of the waste gate, and the pneumatic actuator has the defects of non-closed-loop control, low control precision and delayed response time. The rotary electronic actuator structure is composed of a motor, a reduction gear and a position sensor, and the motor and the reduction gear are driven to drive the waste gate to be opened in a PID control mode. The disadvantages are that: although closed-loop control is adopted, the control precision is improved compared with that of a pneumatic actuator, the reduction mechanism is driven by the rotation of the motor, and the reduction mechanism is large in external dimension, long in response time, small in output torque, complex in structure, low in reliability and increased in cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a straight line stroke electron executor formula turbo charger aims at solving above-mentioned technical problem.
The utility model discloses a realize like this, a turbocharger, including turbine assembly, waste gas bypass subassembly, core assembly and compressor subassembly, turbine assembly's volute with the core assembly is connected, compressor housing of compressor subassembly with the core assembly is connected, waste gas bypass subassembly includes the waste gas valve lid and with the waste gas valve lid crank that the waste gas valve lid is connected, its characterized in that, turbocharger still includes straight line stroke electronic actuator, straight line stroke electronic actuator set up in the top of compressor housing, straight line stroke electronic actuator includes driving motor and output push rod; the exhaust gas valve cover crank of the exhaust gas bypass assembly is connected with the output push rod of the linear stroke electronic actuator through a connecting rod assembly comprising at least two connecting rods, the output push rod is driven by the driving motor to do linear reciprocating motion, and the output push rod drives the connecting rod assembly to drive the exhaust gas valve cover crank to move.
Furthermore, the output push rod is in a long column shape, the output push rod comprises a push rod part oppositely arranged and extending out of the driving motor and a push rod thread part accommodated in the driving motor, the push rod thread part is matched with a central nut of a rotor of the driving motor, and when the rotor of the driving motor rotates, the output push rod is driven to do linear motion in a screw rod transmission mode.
Furthermore, the linear stroke electronic actuator further comprises a guide sleeve, the guide sleeve is fixedly connected with the driving motor, and the push rod part of the output push rod penetrates through the guide sleeve and extends out of the driving motor.
Further, the electromagnetic pressure relief valve is used for protecting the compressor assembly and arranged on one side of the air outlet of the compressor shell.
Further, the number of the connecting rods of the connecting rod assembly is two.
Further, the connecting rod assembly comprises a first connecting rod and a second connecting rod, the length of the first connecting rod is smaller than that of the second connecting rod, the first connecting rod is connected with the free end of the push rod portion, and the second connecting rod is connected with the exhaust gas valve cover crank.
Further, the installation direction of the linear stroke electronic actuator is arranged in parallel with the axial direction of the turbocharger.
The utility model also provides an engine, its characterized in that includes as above-mentioned arbitrary turbo charger.
The utility model also provides a motor vehicle, a serial communication port, including foretell engine.
The utility model adopts the output push rod of the linear stroke electronic actuator to do linear reciprocating motion under the driving of the driving motor, the output push rod, the connecting rod assembly and the waste gas valve cover crank control the opening of the waste gas valve cover together, the maximum stroke of the output push rod can reach more than 30mm, and the maximum stroke is larger than the maximum stroke of the pneumatic or rotary electronic actuator to control the action range of the waste gas valve cover of the waste gas valve, thereby more accurately controlling the waste gas quantity of the waste gas discharged by the engine entering the turbine chamber; the exhaust valve has the advantages that the exhaust valve is free of a speed reducing mechanism, the internal structure is compact, the reliability is improved, the working efficiency is high, and the response time is short, so that the response time of the valve cover of the waste gas valve is shortened, the turbine is enabled to be involved earlier under the condition that the exhaust pressure of the engine is very small, the supercharging effect is realized, the power and the torque of the engine can be greatly improved, the exhaust emission is reduced, and the emission standard above six countries.
Drawings
Fig. 1 is a schematic structural diagram of a turbocharger according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view a-a of the turbocharger of fig. 1.
100, a turbocharger; 1. a volute; 2. a movement assembly; 3. a compressor housing; 4. an electromagnetic pressure relief valve; 5. a linear stroke electronic actuator; 6. an exhaust valve cover crank; 7. an output push rod; 71. a push rod part; 72. a push rod thread part; 8. a connecting rod assembly; 81. a first link; 82. a second link; 9. a guide sleeve; 10. an electric motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The existing exhaust gas turbocharger comprises a turbine assembly, an exhaust gas bypass assembly, a movement assembly and a compressor assembly. The turbine assembly comprises a turbine shell, a turbine shaft and blades, the compressor assembly comprises a compressor shell and an impeller, the turbine shell is connected with the compressor shell through a bearing body, a bearing seat is arranged in a bearing hole in the bearing body, the turbine shaft penetrates through the bearing seat, the front end of the turbine shaft is located in the turbine shell, the tail end of the turbine shaft is located in the compressor shell, the turbine is fixedly arranged at the front end of the turbine shaft, the turbine is provided with the blades, and the impeller is fixedly arranged at the tail end of the turbine shaft. The exhaust gas discharged by the engine enters a turbine chamber to drive a turbine of the turbocharger to rotate, the compressor impeller on the other side is synchronously driven to rotate, the compressor impeller forcibly sucks air from an inlet of the compressor, the air is compressed by the rotation of blades of the compressor and then enters a diffusion passage with the increasingly larger pipe diameter to flow out, and the compressed air is injected into a cylinder to be mixed and combusted with fuel oil in the engine. The waste gas bypass assembly comprises a waste gas valve cover crank, and a pneumatic actuator or a rotary electronic actuator is connected with the waste gas valve cover crank to control the opening size of a waste gas valve cover so as to control the quantity of waste gas entering the turbine chamber.
Referring to fig. 1-2, the present invention is illustrated in the context of a turbocharger, but is not limited to the turbocharger.
A turbocharger 100 comprises a turbine assembly (not shown), an exhaust gas bypass assembly (not shown), a movement assembly 2 and a compressor assembly (not shown), wherein a volute 1 of the turbine assembly is connected with the movement assembly 2, a compressor shell 3 of the compressor assembly is connected with the movement assembly 2, and the exhaust gas bypass assembly comprises an exhaust gas valve cover (not shown) and an exhaust gas valve cover crank 6 connected with the exhaust gas valve cover. The exhaust valve cover crank 6, when actuated, controls the amount of exhaust valve cover opening to control the amount of exhaust gas entering the turbine chamber.
The turbocharger 100 further comprises a linear stroke electronic actuator 5, wherein the linear stroke electronic actuator 5 is arranged above the compressor housing 3, and the linear stroke electronic actuator 5 comprises a driving motor 10 and an output push rod 7; the waste gas valve cover crank 6 of the waste gas bypass assembly is connected with the output push rod 7 of the linear stroke electronic actuator 5 through a connecting rod assembly 8 comprising at least two connecting rods, the output push rod 7 is driven by the driving motor 10 to do linear reciprocating motion, and the output push rod 7 drives the connecting rod assembly 8 to drive the waste gas valve cover crank 6 to move.
Specifically, an output push rod 7 of the linear stroke electronic actuator 5 is driven by the driving motor 10 to perform linear reciprocating motion, the output push rod 7, the connecting rod assembly 8 and the waste gas valve cover crank 6 control the opening of the waste gas valve cover together, the maximum stroke of the output push rod 7 can reach more than 30mm, and the maximum stroke is larger than the action range of the pneumatic or rotary electronic actuator for controlling the waste gas valve cover, so that the waste gas quantity of waste gas discharged by an engine entering a turbine chamber is controlled more accurately; the exhaust valve has the advantages that the exhaust valve is free of a speed reducing mechanism, the internal structure is compact, the reliability is improved, the working efficiency is high, and the response time is short, so that the response time of the valve cover of the waste gas valve is shortened, the turbine is enabled to be involved earlier under the condition that the exhaust pressure of the engine is very small, the supercharging effect is realized, the power and the torque of the engine can be greatly improved, the exhaust emission is reduced, and the emission standard above six countries.
Further, in a preferred embodiment, the output push rod 7 is in a long column shape, the output push rod 7 includes a push rod portion 71 oppositely disposed and extending outside the driving motor 10 and a push rod thread portion 72 accommodated inside the driving motor 10, and the push rod thread portion 72 is engaged with a central nut of a rotor of the driving motor 10. When the rotor of the driving motor 10 rotates, the output push rod 7 is driven to do linear motion in a screw rod transmission mode; that is, when the driving motor 10 rotates, the central nut of the rotor of the driving motor 10 drives the output push rod 7 of the linear stroke electronic actuator 5 to rotate coaxially, and the output push rod 7 is driven to move linearly in a screw rod transmission manner.
Furthermore, the linear stroke electronic actuator 5 further includes a guide sleeve 9, the guide sleeve 9 is fixedly connected with the driving motor 10, and the push rod portion 71 of the output push rod 7 passes through the guide sleeve 9 and extends out of the driving motor 10. The push rod part 71 generates linear motion by passing through the guide sleeve 9, and the guide sleeve 9 can further play a role in guiding, limiting and stabilizing.
Optionally, in an embodiment, the turbocharger 100 further includes an electromagnetic pressure relief valve 4 for protecting a compressor assembly, and the electromagnetic pressure relief valve 4 is disposed on the air outlet side of the compressor housing 3. The turbocharger 100 adopts the electromagnetic pressure relief valve 4 to protect the phenomenon of over-high pressure possibly occurring at the air outlet end of the compressor assembly, when an accelerator is received in the driving process (such as gear shifting and emergency braking), the throttle valve is closed, the turbine and the compressor impeller still continuously rotate under the inertia effect, at the moment, the air pressure in the air inlet pipeline (between the throttle valve and the compressor wheel) can be rapidly increased due to the closing of the throttle valve and the continuous pressurization of the blades, in order to protect a pressurization system, after the pressure reaches a certain limit value, the electromagnetic pressure relief valve for protecting the over-high pressure at the compressor end is opened, and the surplus air is led back to the position between the filter and the compressor wheel, so that the function of pressure reduction protection is realized.
Optionally, in an embodiment, the number of the links of the link assembly 8 is two. Specifically, the connecting rod assembly includes a first connecting rod 81 and a second connecting rod 82, the length of the first connecting rod 81 is smaller than that of the second connecting rod 82, the first connecting rod 81 is connected with the free end of the push rod portion 71, and the second connecting rod 82 is connected with the wastegate valve cover crank 6.
Further, in a preferred embodiment, the linear stroke electronic actuator 5 is installed in a direction parallel to the axial direction of the turbocharger 100. In this embodiment, the linear stroke electronic actuator 5 is disposed on the compressor housing 3, and the mounting direction is parallel to the axial direction of the turbocharger 100, so that the turbocharger has a compact structure, a small volume, and a reduced cost.
Further, the present invention also provides an engine, including the turbocharger 100 in any one of the above embodiments, and those skilled in the art should understand that the engine may further include other necessary structures and components in the prior art, which are not described herein again.
Further, the present invention provides a motor vehicle, including the turbocharger 100 in any one of the above embodiments, and those skilled in the art should understand that the motor vehicle may further include other necessary structures and components in the prior art, which are not described herein again.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A turbocharger comprises a turbine assembly, an exhaust gas bypass assembly, a core assembly and a compressor assembly, wherein a volute of the turbine assembly is connected with the core assembly, a compressor shell of the compressor assembly is connected with the core assembly, the exhaust gas bypass assembly comprises an exhaust gas valve cover and an exhaust gas valve cover crank connected with the exhaust gas valve cover, and the turbocharger is characterized by further comprising a linear stroke electronic actuator, the linear stroke electronic actuator is arranged above the compressor shell, and the linear stroke electronic actuator comprises a driving motor and an output push rod; the exhaust gas valve cover crank of the exhaust gas bypass assembly is connected with the output push rod of the linear stroke electronic actuator through a connecting rod assembly comprising at least two connecting rods, the output push rod is driven by the driving motor to do linear reciprocating motion, and the output push rod drives the connecting rod assembly to drive the exhaust gas valve cover crank to move.
2. The turbocharger according to claim 1, wherein the output rod is in a shape of a long column, the output rod includes a rod portion extending outside the driving motor and a rod thread portion received inside the driving motor, the rod thread portion is engaged with a central nut of a rotor of the driving motor, and the output rod is driven to move linearly by a screw rod transmission manner when the rotor of the driving motor rotates.
3. The turbocharger of claim 1, wherein the linear stroke electronic actuator further comprises a guide sleeve, the guide sleeve is fixedly connected with the driving motor, and the push rod part of the output push rod passes through the guide sleeve and extends out of the driving motor.
4. The turbocharger of claim 1, further comprising an electromagnetic relief valve for protecting a compressor assembly, the electromagnetic relief valve being disposed on an outlet side of the compressor housing.
5. The turbocharger of claim 2, wherein the number of said connecting rods of said connecting rod assembly is two.
6. The turbocharger of claim 5, wherein the link assembly includes a first link and a second link, the first link having a length less than a length of the second link, the first link being connected to the free end of the pushrod and the second link being connected to the wastegate cover crank.
7. The turbocharger of claim 1, wherein the linear stroke electronic actuator is mounted in a direction parallel to an axial direction of the turbocharger.
8. An engine comprising a turbocharger according to any one of claims 1 to 7.
9. A motor vehicle comprising an engine according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224578.XU CN210599177U (en) | 2019-07-31 | 2019-07-31 | Linear stroke electronic actuator type turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224578.XU CN210599177U (en) | 2019-07-31 | 2019-07-31 | Linear stroke electronic actuator type turbocharger |
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| Publication Number | Publication Date |
|---|---|
| CN210599177U true CN210599177U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921224578.XU Active CN210599177U (en) | 2019-07-31 | 2019-07-31 | Linear stroke electronic actuator type turbocharger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529235A (en) * | 2019-07-31 | 2019-12-03 | 湖南天雁机械有限责任公司 | A kind of rectilinear path electronic actuators formula turbocharger |
| CN113565623A (en) * | 2021-06-30 | 2021-10-29 | 东风汽车集团股份有限公司 | Executor coupling mechanism, bypass booster and vehicle |
-
2019
- 2019-07-31 CN CN201921224578.XU patent/CN210599177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529235A (en) * | 2019-07-31 | 2019-12-03 | 湖南天雁机械有限责任公司 | A kind of rectilinear path electronic actuators formula turbocharger |
| CN113565623A (en) * | 2021-06-30 | 2021-10-29 | 东风汽车集团股份有限公司 | Executor coupling mechanism, bypass booster and vehicle |
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