CN220302201U - Control device for controlling opening and closing of valve of engine and engine - Google Patents
Control device for controlling opening and closing of valve of engine and engine Download PDFInfo
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- CN220302201U CN220302201U CN202322304685.6U CN202322304685U CN220302201U CN 220302201 U CN220302201 U CN 220302201U CN 202322304685 U CN202322304685 U CN 202322304685U CN 220302201 U CN220302201 U CN 220302201U
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- 239000012530 fluid Substances 0.000 claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims abstract description 30
- 230000001276 controlling effect Effects 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application proposes a controlling means for controlling the opening and closing of a valve of an engine, the controlling means comprising a control module comprising: an actuating cylinder comprising a cylinder body and a piston for operating the valve, the cylinder body forming a drive chamber, the piston being adapted to be driven by a pressure fluid flowing from a pressure source into the drive chamber of the cylinder body; and the fluid regulating mechanism is in control coupling with an electronic control unit of the engine to selectively increase or decrease the pressure fluid in the driving cavity of the cylinder body. The application has the advantages that: the opening time, closing time and opening lift of the valve can be flexibly controlled.
Description
Technical Field
The present application relates to a control device for controlling opening and closing of a valve of an engine and an engine.
Background
In an engine in the form of an internal combustion engine, a valve is provided on a cylinder head. The valves include intake and exhaust valves to respectively effect intake and exhaust of the cylinders. In existing internal combustion engines, a camshaft is used to control opening and closing of valves. The camshaft is driven by a crankshaft of the internal combustion engine via a belt transmission mechanism, and when rotated to a certain angle, the valve is ejected. A return element is also provided to return the valve to the closed position.
In the prior art, the opening and closing times of the valves and the lift at which the valves open are determined by the camshaft and are fixed. The engine has various operating conditions to meet the different demands of the driver and the vehicle. Thus, camshaft controlled valve schemes may result in inefficient intake and exhaust air at least in certain operating conditions of the engine.
Disclosure of Invention
An object of the present application is to provide a control device for controlling opening and closing of a valve of an engine so that the opening timing, closing timing, and opening lift of the valve can be flexibly controlled.
According to a first aspect of the present application, there is provided a control device for controlling opening and closing of a valve of an engine, the control device including a control module including:
an actuating cylinder comprising a cylinder body and a piston for operating the valve, the cylinder body forming a drive chamber, the piston being adapted to be driven by a pressure fluid flowing from a pressure source into the drive chamber of the cylinder body;
a fluid regulating mechanism is controllably coupled to an electronic control unit (ECU, electronic Control Unit) of the engine to selectively increase or decrease pressure fluid within a drive chamber of the cylinder.
According to an alternative embodiment of the present application, the fluid regulating mechanism comprises an inflow regulating mechanism provided on the flow line between the pressure source and the actuating cylinder.
According to an alternative embodiment of the application, the control module comprises a first orifice arranged in the fluid line between the pressure source and the actuating cylinder for throttling the pressure fluid flowing into the actuating cylinder.
According to an alternative embodiment of the application, the control module comprises a second orifice arranged in the fluid path downstream of the actuator cylinder for throttling the pressure fluid exiting the actuator cylinder.
Here, the through-flow cross-sectional areas of the first orifice and the second orifice are fixed.
According to an alternative embodiment of the present application, the fluid regulating mechanism comprises a reversing valve and/or a proportional valve.
According to an alternative embodiment of the present application, the inflow adjustment mechanism is configured as a two-position two-way reversing valve and is adapted to selectively communicate or interrupt a fluid line between the pressure source and the actuating cylinder.
According to an alternative embodiment of the present application, the first orifice is provided downstream of the two-position two-way reversing valve.
According to an alternative embodiment of the present application, the through-flow cross-sectional area of the first orifice is larger than the through-flow cross-sectional area of the second orifice.
According to an alternative embodiment of the present application, the actuating cylinder is configured to move the valve in the opening direction by means of a piston, and the control module comprises a resetting element configured to be adapted to reset the valve to the closed position.
According to an alternative embodiment of the present application, the return element is configured as a spring.
According to an alternative embodiment of the present application, the inner cavity of the cylinder body of the actuation cylinder is divided by the piston into a first subchamber and a second subchamber, the fluid regulating mechanism being configured to allow the pressure source to communicate with the first subchamber and/or the second subchamber via the fluid regulating mechanism and to correspondingly regulate the pressure of the pressure fluid within the first subchamber and/or the second subchamber.
According to an alternative embodiment of the present application, the pressure fluid is a liquid.
According to an alternative embodiment of the present application, the valve comprises an inlet valve and/or an exhaust valve.
According to an alternative embodiment of the present application, the control means comprises the pressure source.
According to an alternative embodiment of the present application, the pressure source comprises an accumulator and a pressure pump for pressurizing and pumping fluid to the accumulator.
According to an alternative embodiment of the present application, the control device is provided with one control module for each valve.
According to an alternative embodiment of the present application, the pressure source is a common pressure source for supplying all control modules.
According to a second aspect of the present application, there is provided an engine comprising the aforementioned control device for controlling opening and closing of a valve of the engine.
In at least some embodiments, the positive effects of the present application are: the opening time, closing time and opening lift of the valve can be flexibly controlled, so that the air inlet and exhaust efficiency and the engine performance are improved; the control device has simple structure.
Drawings
The principles, features and advantages of the present application may be better understood by describing the present application in more detail with reference to the drawings. The drawings include:
fig. 1 shows an example of a control device of the present application in a schematic diagram.
Fig. 2 schematically shows another example of the control device of the present application.
Fig. 3 schematically shows yet another example of the control device of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous technical effects to be solved by the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and a plurality of exemplary embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present application.
Fig. 1 shows an example of a control device of the present application in a schematic diagram.
As shown in fig. 1, the control device includes a control module 2. The control module 2 includes:
an actuating cylinder 3, the actuating cylinder 3 comprising a cylinder body 30 and a piston 33 for operating the valve 6, the cylinder body 30 forming a drive chamber 34, the piston 33 being adapted to be driven by a pressure fluid flowing from the pressure source 1 into the drive chamber 34 of the cylinder body 30;
and a fluid regulating mechanism 4, wherein the fluid regulating mechanism 4 is in control coupling with an electronic control unit 7 of the engine to selectively increase or decrease the pressure fluid in a driving cavity 34 of the cylinder 30.
Referring to fig. 1, an increase in pressure fluid in the drive chamber 34 means that the piston 33 is down and lifts the valve 6, while a decrease in pressure fluid in the drive chamber 34 means that the piston 33 and valve 6 are up and the valve 6 is back to the closed position. In this application, the control of the valve 6 is made more flexible by the valve 6 being fluidly controlled by the electronic control unit 7 of the engine than by the camshaft. The electronic control unit 7 enables, in particular, flexible control of the opening times, closing times and the lift h of the valve 6.
The fluid regulating means 4 are in particular used for regulating the flow of pressure fluid into the actuating cylinder 3 and/or the flow of pressure fluid out of the actuating cylinder 3 under the control of the electronic control unit 7, so that a different ratio between the inflow and outflow flows can be achieved, thereby effecting a regulation of the pressure fluid within the cylinder body 30 of the actuating cylinder 3. The fluid regulating mechanism 4 comprises in particular a reversing valve 42 (see fig. 2 for an example) and/or a proportional valve. The reversing valve 42 and the proportional valve can be conveniently controlled by the electronic control unit 7 and are inexpensive. It is also conceivable that the fluid regulating mechanism 4 comprises a servo valve.
It is conceivable that the pressure source 1 is also part of the control device.
According to an exemplary embodiment of the present application, the pressure fluid is a liquid. Control achieved with liquid will be more accurate than with gas. It is also conceivable that the pressure fluid is a gas.
According to an exemplary embodiment of the present application, as shown in fig. 1, the actuating cylinder 3 is configured to be adapted to move the valve 6 in the opening direction 61 by means of the piston 33, the control module 2 comprising a resetting element 5, the resetting element 5 being configured to be adapted to reset the valve 6 to the closed position. As shown in fig. 1, the actuating cylinder 3 may be disposed above the valve 6 and adapted to jack the valve 6 downward (i.e., downward relative to the cylinder head 8 of the engine), while the return element 5 is adapted to jack the valve 6 upward to a closed position (i.e., the lower surface of the valve 6 is substantially flush with the lower surface of the cylinder head 8). Alternatively, however, it is also conceivable for the actuating cylinder 3 to be used to lift the valve 6 upwards in order to return the valve 6 to the closed position, and for the return element 5 to be used to lift the valve 6 downwards, or the like.
According to an exemplary embodiment of the present application, as shown in fig. 1, the fluid regulating mechanism 4 comprises an inflow regulating mechanism 41, the inflow regulating mechanism 41 being arranged on the flow line between the pressure source 1 and the actuating cylinder 3. Additionally or alternatively thereto, it is also conceivable that the fluid regulating mechanism 4 comprises an outflow regulating mechanism 44, the outflow regulating mechanism 44 being provided downstream of the actuating cylinder 3.
Fig. 2 schematically shows another example of the control device of the present application.
According to an exemplary embodiment of the present application, as shown in fig. 2, the control module 2 comprises a first orifice 43 provided in the fluid line between the pressure source 1 and the actuating cylinder 3 for throttling the pressure fluid flowing into the actuating cylinder 3. In fig. 2, the control module 2 further comprises a second orifice 45 arranged in the fluid path downstream of the actuator cylinder 3 for throttling the pressure fluid flowing out of the actuator cylinder 3. By designing the through-flow sectional areas of the first orifice 43 and the second orifice 45, the flow rate of the pressure fluid flowing into the drive chamber 34 of the actuator cylinder 3 and the flow rate of the pressure fluid flowing out of the drive chamber 34 can be defined, and the ratio of the inflow flow rate and the outflow flow rate can be defined and the pressure of the pressure fluid in the cylinder body 30 can be influenced accordingly.
According to an exemplary embodiment of the present application, referring to fig. 2, the through-flow cross-sectional area of the first orifice 43 is larger than the through-flow cross-sectional area of the second orifice 45. Whereby the cylinder 30 can be rapidly filled with the pressure fluid during the opening of the valve 6. Depending on the pressure of the pressure source 1, it is also conceivable that the through-flow cross-sectional area of the first orifice 43 is smaller than or equal to the through-flow cross-sectional area of the second orifice 45.
According to an exemplary embodiment of the present application, as shown in fig. 2, the inflow adjustment mechanism 41 is configured as a two-position two-way reversing valve 42 and is adapted to selectively communicate or interrupt the fluid line between the pressure source 1 and the actuating cylinder 3. By means of the first orifice 43, the second orifice 45 and the directional control valve 42 controlled by the electronic control unit 7, flexible control of the valve 6 can be achieved in a simple and cost-effective manner. Alternatively, it is conceivable for the control module 2 to have a first proportional valve as the inflow adjustment mechanism 41 and a second proportional valve as the outflow adjustment mechanism 44.
In the example of fig. 2, the opening and closing of the valve 6 is effected, for example, in the following manner of operation.
The valve 6 is closed: the fluid inflow line is interrupted by the reversing valve 42, so that the valve 6 is reset to the closed position by the reset element 5, and accordingly, the pressurized fluid in the cylinder 30 flows out until the valve 6 reaches the closed position;
the valve 6 is opened: the fluid inflow line is connected through the reversing valve 42 so that the pressure fluid fills the cylinder 30 and presses the piston 33 downward against the return element 5 so that the valve 6 moves downward until the maximum opening lift h of the valve 6 is reached when a steady pressure is reached in the cylinder 30.
By controlling the on-off timing of the directional valve 42 by the electronic control unit 7, control of the opening timing, closing timing, and lift h of the opening of the valve 6 can thereby be achieved with a simple structure.
According to an exemplary embodiment of the present application, as shown in fig. 2, the pressure source 1 comprises an accumulator 10 and a pressure pump 11, the pressure pump 11 being adapted to pressurize and pump fluid to the accumulator 10. Other types of pressure sources 1 are also conceivable. As shown in fig. 2, a pressure sensor 12 is disposed in the accumulator 10, for example. The electronic control unit 7 may obtain the pressure in the accumulator 10 from the pressure sensor 12. The electronic control unit 7 controls the pressure pump 11 based on the obtained pressure. The pressure in the accumulator 10 is for example 350bar or 500bar.
According to an exemplary embodiment of the present application, the valve 6 comprises an intake valve and/or an exhaust valve. The control device may be provided with one control module 2 for each valve 6. In the case of fig. 2, the engine has, for example, four valves 6, namely two intake valves and two exhaust valves. The control device comprises four control modules 2 for controlling the four valves 6, respectively.
According to an exemplary embodiment of the present application, see fig. 2, the pressure source 1 is a common pressure source for supplying all control modules 2. In fig. 2, the accumulator 10 has illustratively four output ports for supplying pressurized fluid to the four valves 6 of the engine.
Fig. 3 schematically shows yet another example of the control device of the present application.
According to an exemplary embodiment of the present application, as shown in fig. 3, the inner cavity of the cylinder body 30 of the actuating cylinder 3 is divided by a piston 33 into a first subchamber 31 and a second subchamber 32, the fluid regulating mechanism 4 being configured to allow the pressure source 1 to communicate with the first subchamber 31 and/or the second subchamber 32 via the fluid regulating mechanism 4 and to correspondingly regulate the pressure of the pressure fluid within the first subchamber 31 and/or the second subchamber 32. It is conceivable here for the piston 33 and the valve 6 to be fixed to each other, so that the valve 6 can be moved into the closed position by controlling the pressure of the pressure fluid in the second subchamber 32 of the cylinder 30. The reset element 5 can thereby be dispensed with.
The present application is not limited to the drawings and the described embodiments. It is obvious that the individual elements of the drawings and embodiments are individually and reasonably combined with other elements by a person skilled in the art within the ability thereof. For brevity, this is not exhaustive.
Although specific embodiments of the present application have been described in detail herein, they are presented for purposes of illustration only and are not to be construed as limiting the scope of the present application. Various substitutions, alterations, and modifications can be made without departing from the spirit and scope of the application.
List of reference numerals
1 pressure source
10 accumulator
11 pressure pump
12 pressure sensor
2 control module
3 actuating cylinder
30 cylinder block
31 first subchamber
32 second subchamber
33 piston
34 drive chamber
4 fluid regulating mechanism
41 inflow adjustment mechanism
42 reversing valve
43 first orifice
44 outflow adjusting mechanism
45 second orifice
5 reset element
6 air valve
61 opening direction
7 electronic control unit
8 cylinder cover
h lift
Claims (9)
1. A control device for controlling opening and closing of a valve of an engine, characterized in that the control device comprises a control module (2), the control module (2) comprising:
-an actuating cylinder (3), the actuating cylinder (3) comprising a cylinder body (30) and a piston (33) for operating the valve (6), the cylinder body (30) forming a drive chamber (34), the piston (33) being adapted to be driven by a pressure fluid flowing from a pressure source (1) into the drive chamber (34) of the cylinder body (30);
and a fluid regulating mechanism (4), wherein the fluid regulating mechanism (4) is in control coupling with an electronic control unit (7) of the engine so as to selectively increase or decrease pressure fluid in a driving cavity (34) of the cylinder body (30).
2. The control device for controlling opening and closing of a valve of an engine according to claim 1, characterized in that the control device includes at least one of the following features:
the fluid regulating mechanism (4) comprises an inflow regulating mechanism (41), the inflow regulating mechanism (41) being arranged on a flow line between the pressure source (1) and the actuating cylinder (3);
the control module (2) comprises a first orifice (43) arranged in a fluid line between the pressure source (1) and the actuating cylinder (3) for throttling the pressure fluid flowing into the actuating cylinder (3);
the control module (2) comprises a second orifice (45) arranged in the fluid path downstream of the actuating cylinder (3) for throttling the pressure fluid exiting the actuating cylinder (3);
the fluid regulating mechanism (4) comprises a reversing valve (42) and/or a proportional valve.
3. The control device for controlling opening and closing of a valve of an engine according to claim 2, wherein,
the inflow adjustment mechanism (41) is configured as a two-position two-way reversing valve (42) and is adapted to selectively communicate or interrupt a fluid line between the pressure source (1) and the actuating cylinder (3);
the first orifice (43) is provided downstream of the two-position two-way reversing valve (42).
4. The control device for controlling opening and closing of a valve of an engine according to claim 2, wherein a through-flow cross-sectional area of the first orifice (43) is larger than a through-flow cross-sectional area of the second orifice (45).
5. The control device for controlling opening and closing of a valve of an engine according to any one of claims 1 to 4,
the actuating cylinder (3) is configured to move the valve (6) by means of a piston (33) in an opening direction (61), the control module (2) comprising a return element (5), the return element (5) being configured to be adapted to return the valve (6) to a closed position;
the return element (5) is designed as a spring.
6. The control device for controlling the opening and closing of a valve of an engine according to any one of claims 1 to 4, characterized in that the inner cavity of the cylinder body (30) of the actuating cylinder (3) is divided by the piston (33) into a first subchamber (31) and a second subchamber (32), the fluid regulating mechanism (4) being configured to allow the pressure source (1) to communicate with the first subchamber (31) and/or the second subchamber (32) via the fluid regulating mechanism (4) and to regulate the pressure of the pressure fluid within the first subchamber (31) and/or the second subchamber (32) respectively.
7. The control device for controlling opening and closing of a valve of an engine according to any one of claims 1 to 4, characterized in that the control device includes at least one of the following features:
the pressure fluid is a liquid;
the valve (6) comprises an inlet valve and/or an exhaust valve;
the control device comprises the pressure source (1);
the pressure source (1) comprises an accumulator (10) and a pressure pump (11), the pressure pump (11) being for pressurizing and pumping fluid to the accumulator (10);
the control device is provided with a control module (2) for each valve (6).
8. Control device for controlling the opening and closing of the valves of an engine according to claim 7, characterized in that the pressure source (1) is a common pressure source for supplying all control modules (2).
9. An engine comprising the control device for controlling opening and closing of a valve of an engine according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322304685.6U CN220302201U (en) | 2023-08-25 | 2023-08-25 | Control device for controlling opening and closing of valve of engine and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322304685.6U CN220302201U (en) | 2023-08-25 | 2023-08-25 | Control device for controlling opening and closing of valve of engine and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302201U true CN220302201U (en) | 2024-01-05 |
Family
ID=89344593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322304685.6U Active CN220302201U (en) | 2023-08-25 | 2023-08-25 | Control device for controlling opening and closing of valve of engine and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302201U (en) |
-
2023
- 2023-08-25 CN CN202322304685.6U patent/CN220302201U/en active Active
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