CN107490484B - Plateau air inlet simulation device of engine - Google Patents
Plateau air inlet simulation device of engine Download PDFInfo
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- CN107490484B CN107490484B CN201611213633.6A CN201611213633A CN107490484B CN 107490484 B CN107490484 B CN 107490484B CN 201611213633 A CN201611213633 A CN 201611213633A CN 107490484 B CN107490484 B CN 107490484B
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- 238000004088 simulation Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 34
- 238000009423 ventilation Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 9
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
Abstract
The utility model relates to an air inlet unit for simulating plateau of engine, including the surge tank, this surge tank separates through the baffle and is formed with first cavity and second cavity, first cavity is formed with the air inlet that is used for connecting air supply system and is provided with the throttle valve and is used for connecting the gas outlet of engine intake pipe, the second cavity is used for connecting the pressure supply device, be provided with on the surge tank and be driven so that first cavity and second cavity intercommunication or block the pressure regulation structure of intercommunication through the manual operation of operating member for be used for adjusting the atmospheric pressure in the first cavity. The gas supply system provides gas into the first chamber to realize the simulation of various different plateau gas pressures in the first chamber, and the gas pressure in the first chamber is accurately regulated by driving the pressure regulating structure through the manual operation of the operating component, so that the effect of simulating the plateau gas inlet state and accurately controlling the gas inlet pressure of the engine is achieved.
Description
Technical Field
The disclosure relates to the technical field of engine test equipment, in particular to a plateau air inlet simulation device of an engine.
Background
When the vehicle runs in a high altitude area, the air intake amount of the engine is obviously smaller than that of the engine running on a plain due to small atmospheric pressure and low air density, and the fuel amount required for combustion is different from that of the plain. In order to enable the central control unit of the engine to recognize the plateau atmospheric pressure and correct the air inflow, the calibration needs to be adjusted correspondingly, so that the phenomena of output power reduction, heat dissipation performance reduction, high exhaust temperature, fuel economy performance reduction and the like of the engine are prevented, and the service life of the engine is shortened. For this reason, engines suitable for use in plateau vehicles are typically reconditioned and tested using a plateau test chamber to substantially optimize engine performance. The construction cost and the use cost of the plateau laboratory are very high.
Disclosure of Invention
The problem that this disclosure solved provides one kind and can simulate plateau air intake state and accurate control engine intake pressure's plateau air intake device.
In order to achieve the purpose, the engine plateau simulating air inlet device comprises a pressure stabilizing box, wherein a first cavity and a second cavity are formed in the pressure stabilizing box in a separated mode through a partition plate, an air inlet used for being connected with an air supply system and an air outlet used for being connected with an air inlet pipe of an engine are formed in the first cavity, the second cavity is used for being connected with a pressure supply device, and a pressure adjusting structure which can be driven through manual operation of an operating component to enable the first cavity and the second cavity to be communicated or blocked is arranged on the pressure stabilizing box and used for adjusting air pressure in the first cavity.
Alternatively, the pressure adjusting structure includes a vent hole formed in the partition plate and an adjusting member provided on the partition plate and capable of opening and closing the vent hole by a manual operation of the operating member.
Optionally, the partition plate is provided with a receiving groove communicated with the vent hole along the extending direction of the partition plate, the adjusting member comprises an adjusting rod inserted into the vent hole in a penetrating manner, a through hole transversely penetrating through the adjusting rod is formed in the adjusting rod, the operating member is an operating rod and is movably inserted into the receiving groove and the through hole along the extending direction from the outside of the surge tank, an operating block is formed on part of the outer peripheral surface of the operating rod in a protruding manner, in the first position, the operating block is located in the through hole and drives the adjusting rod to axially extend relative to the vent hole so as to open the vent hole, and in the second position, the operating block is located in the receiving groove and drives the adjusting rod to axially retract relative to the vent hole so as to close the vent hole.
Optionally, the operating block is formed as an eccentric cam, and the operating rod is rotatably received in the receiving groove so that the eccentric cam drives the adjusting rod to extend and contract relative to the air vent hole by rotation of the operating rod.
Optionally, the adjusting member further comprises a driving member disposed at the first end of the adjusting rod and capable of automatically driving the adjusting rod to axially extend and contract relative to the vent hole to open and close the vent hole under the control of a controller.
Optionally, a gap is formed between an inner circumferential surface of the vent hole and an outer circumferential surface of the adjusting rod, an annular limit flange matched with the outer circumferential surface of the adjusting rod is formed on an inner circumferential surface of one end of the vent hole corresponding to the second end of the adjusting rod in a protruding mode, a first through hole communicated with the second chamber and the gap is formed on the limit flange, a second through hole communicated with the first chamber and the gap is formed on the partition plate, a valve plate protruding outwards in the radial direction and capable of sealing the first through hole is formed on the second end of the adjusting rod, in the first position, the valve plate is separated from an end surface of the limit flange to open the first through hole, and in the second position, the valve plate is pressed on an end surface of the limit flange to close the first through hole.
Optionally, the first through holes are multiple and arranged on the limiting flange along the circumferential direction, and the second through holes are multiple and arranged around the outer circumferential surface of the vent hole.
Optionally, the driving member includes a thermal bulb disposed on the partition plate and connected to the first end of the adjusting rod, and a temperature adjusting device connected to the thermal bulb and used for heating the thermal bulb, in the first position, the temperature adjusting device thermally expands the thermal bulb to drive the adjusting rod to axially extend relative to the vent hole, and in the second position, the temperature adjusting device cools the thermal bulb to contract to drive the adjusting rod to axially retract relative to the vent hole.
Optionally, the temperature adjusting device is a semiconductor heating and cooling device, and the driving member further includes a power supply for supplying power to the semiconductor heating and cooling device.
Optionally, the temperature adjusting device is a thermistor, and the driving member further includes a power supply for supplying power to the thermistor. Optionally, the adjusting member further includes a housing located in the first chamber and disposed on the partition, the housing has a containing cavity corresponding to the vent hole, the thermistor and the thermal bulb are located in the containing cavity, the thermal bulb is sleeved on an outer peripheral surface of the thermistor and has a gap with an inner wall surface of the containing cavity, in the first position, the power supply supplies power to the thermistor so that the thermal bulb expands due to heat generated by the thermistor, and in the second position, the power supply stops supplying power to the thermistor so that the thermal bulb contracts due to cooling of the thermistor.
Optionally, the pressure adjusting structure is provided with a plurality of pressure adjusting members at intervals on the partition plate, the thermistor of each adjusting member is exposed out of the respective housing and extends into a whole, the thermistor is parallel to the partition plate, two ends of the thermistor are fixed to the first chamber, a sheath covers an outer circumferential surface of an exposed part of the thermistor, and the power supply is provided on the sheath and electrically connected with the thermistor.
Optionally, the plateau air inlet simulation device for the engine further includes a pressure gauge, a pressure sensor and a controller electrically connected to the pressure sensor, the pressure gauge and the pressure sensor are disposed on the first chamber for detecting the pressure in the first chamber, and the controller controls the pressure adjusting structure to work according to a signal detected by the pressure sensor so that the first chamber and the second chamber are communicated or blocked from being communicated.
Optionally, the pressure sensor is disposed on a side wall of the first chamber adjacent to the air outlet and the partition.
Optionally, the partition plate is horizontally arranged in the pressure stabilizing box so that the first chamber is arranged above the second chamber in the height direction, and the air inlet and the air outlet are arranged on two opposite side walls of the first chamber.
Through the technical scheme, namely, the air supply system is connected to the air inlet of the first cavity of the pressure stabilizing box, the air inlet pipe of the engine is connected to the air outlet of the first cavity, and the pressure supply device is connected to the second cavity of the pressure stabilizing box, so that in the working state, the air supply system supplies air to the first cavity of the pressure stabilizing box through the air inlet to realize the simulation of various different plateau air pressures in the first cavity. Here, the pressure adjustment structure provided on the surge tank is driven by the manual operation of the operation member, so that the first chamber and the second chamber are communicated, and the gas in the first chamber can be discharged into the second chamber to reduce the pressure in the first chamber, or the gas in the second chamber flows into the first chamber to increase the pressure in the first chamber, thereby realizing the accurate adjustment of the pressure in the intake pipe of the engine, and thus, the effect of simulating the altitude intake state and accurately controlling the intake pressure of the engine can be achieved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic structural section view of an air inlet device for simulating plateau of an engine according to an embodiment of the disclosure;
fig. 2 is an enlarged view of a portion a in fig. 1;
fig. 3 is a block diagram of a position-limiting flange in an engine simulated plateau air intake device according to an embodiment of the present disclosure.
Description of the reference numerals
1 surge tank 2 baffle
3 first chamber 4 second chamber
5 air inlet and 6 air outlet
7 opening 8 vent
9 adjusting rod 10 valve plate
11 first through hole of limit flange 12
13 second through hole 14 throttle
15 housing 16 accommodating chamber
17 power supply 18 thermistor
19 temperature sensing bulb 20 pressure gauge
21 pressure sensor 22 controller
23-through hole 25 multi-hole sound-absorbing plate
26 gap between sheaths 27
30 operating member 31 operating block
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the present disclosure provides an air inlet device for simulating plateau of an engine, which includes a pressure stabilizing box 1, the pressure stabilizing box 1 is partitioned by a partition plate 2 to form a first chamber 3 and a second chamber 4, the first chamber 3 is formed with an air inlet 5 for connecting an air supply system and an air outlet 6 for connecting an air inlet pipe of the engine, the second chamber 4 is used for connecting a pressure supply device, and the pressure stabilizing box 1 is provided with a pressure adjusting structure which can be driven by manual operation of an operating member 30 to communicate or block the communication between the first chamber 3 and the second chamber 4, so as to adjust air pressure in the first chamber 3. That is, by connecting the air supply system to the air inlet 5 of the first chamber 3 of the surge tank 1, connecting the engine intake duct to the air outlet 6 of the first chamber 3, and connecting the pressure supply device to the second chamber 4 of the surge tank 1, whereby, in an operating state, the air supply system supplies air into the first chamber 3 of the surge tank 1 through the air inlet 5 to achieve simulation of a plurality of different high atmospheric pressures within the first chamber 3, and here, the pressure regulating structure provided on the surge tank 1 is driven by manual operation of the operating member 30 to communicate the first chamber 3 with the second chamber 4, whereby the air within the first chamber 3 can be discharged into the second chamber 4 to reduce the air pressure within the first chamber 3, or the air within the second chamber 4 flows into the first chamber 3 to increase the air pressure within the first chamber 3, thereby achieving precise regulation of the air pressure into the engine intake duct, the effect of simulating the plateau air inlet state and accurately controlling the air inlet pressure of the engine can be achieved.
Here, an opening 7 for connecting a pressure supply device may be formed in the second chamber 3, and a throttle valve 14 for adjusting an intake air amount may be provided at the intake port 5 of the first chamber 3. At this time, after the air pressure in the first chamber 3 can be preliminarily adjusted by the throttle valve 14 provided on the air intake port 5, the pressure adjusting structure on the surge tank 1 is driven by the manual operation of the operating member 30, so that the air pressure in the first chamber 3 is further accurately adjusted, and the accuracy of adjusting the intake air amount of the engine is effectively improved. The operation member 30 and the pressure adjustment structure may take various reasonably suitable structures as long as the function of driving the pressure adjustment structure to communicate or block the communication of the first chamber 3 and the second chamber 4 by the manual operation of the operation member 30 can be achieved. In addition, the pressure supply device can control the air pressure in the second chamber 4 to be smaller than or larger than the air pressure in the first chamber 3 in real time in the working state, so that the effect of adjusting the air pressure in the first chamber 3 can be realized by driving the pressure adjusting structure through the manual operation of the operating member 30. For example, the pressure supply device may include a first pressure supply device and a second pressure supply device, wherein in the working state, the pressure supplied by the first pressure supply device is smaller than the pressure in the first chamber 3, for example, the first pressure supply device may be a negative pressure supply device such as a vacuum pump, and the pressure supplied by the second pressure supply device is larger than the pressure in the second chamber 3. At this time, the second chamber 4 may be divided into two independent chambers and respectively and correspondingly connected to the first pressure supply device and the second pressure supply device, in this case, the pressure adjustment structure is two and respectively performs a function of communicating or blocking communication between the first chamber 3 and the two chambers of the second chamber 4, so that an effect of adjusting the air pressure in the first chamber 3 can be achieved, the air pressure in the first chamber 3 can be conveniently adjusted, and various different plateau intake states can be simulated to accurately control the intake pressure of the engine. In addition, a porous sound-absorbing plate 25 can be arranged on the inner wall of the surge tank 1 to reduce the noise in the surge tank 1 when the engine works.
Alternatively, the pressure adjusting structure includes a vent hole 8 formed in the partition plate 2 and an adjusting member provided on the partition plate 2 and capable of opening and closing the vent hole 8 by manual operation of the operating member 30. For example, the adjusting member may be an adjusting plate rotatably provided on the surface of the partition plate 2 at a position near the ventilation hole 8, and the operating member 30 may be a motor or the like for driving the adjusting plate to rotate. As described above, the vent hole 8 is opened and closed by rotating the adjustment plate by the motor, so that the gas in the first chamber 3 can flow into the second chamber 4 through the vent hole 8 to reduce the gas pressure in the first chamber 3 by opening the vent hole 8, or the gas in the second chamber 4 can flow into the first chamber 3 through the vent hole 8 to increase the gas pressure in the first chamber 3, thereby achieving precise control of the gas pressure in the first chamber 3. However, the present disclosure is not limited thereto, and the following configuration may be adopted.
Alternatively, as shown in fig. 1 and 2, the partition plate 2 is formed with a receiving groove communicating with the venthole 8 in the extending direction thereof, the adjusting member includes an adjusting rod 9 inserted through the venthole 8, a through hole 23 is formed in the adjusting lever 9 so as to penetrate the adjusting lever 9 in the lateral direction, the operating member 30 is an operating lever which is inserted into the accommodating groove and the through hole 23 from the outside of the surge tank 1 so as to be movable in the extending direction, an operating block 31 is formed on a part of the outer peripheral surface of the operating lever in a protruding manner, in the first position, the operating block 31 is located in the through hole 23 and drives the adjusting rod 9 to axially extend relative to the vent hole 8 to open the vent hole 8, in the second position, the operating block 31 is located inside the housing groove and drives the adjustment rod 9 to retract axially relative to the ventilation hole 8 to close the ventilation hole 8. Here, the operating block 31 is formed as an eccentric cam, and the operating lever is rotatably received in the receiving groove so that the eccentric cam drives the adjusting lever 9 to extend and contract with respect to the ventilation hole 8 by rotation of the operating lever. Therefore, the operating rod is moved and rotated in the accommodating groove by manually operating the operating rod, and the eccentric cam drives the adjusting rod 9 to extend out relative to the vent hole 8 in the process of rotating in the through hole 23, so that the vent hole 8 is opened, and the gas in the first chamber 3 flows to the second chamber 4 through the vent hole 8. The air pressure in the first chamber 3 can be accurately adjusted conveniently and rapidly by the simple structure as described above, and the efficiency of the air pressure adjusting work in the first chamber 3 is improved.
The present disclosure is not limited thereto, and the operating member 30 may be specifically designed according to actual needs. For another example, the operation block 31 may be formed with a continuous inclined surface or an arc surface for driving the adjustment rod 9 to extend and contract with respect to the ventilation hole 8, so that when the operation block 31 moves in the through hole 23, the inclined surface or the arc surface on the operation block 31 comes into contact with a part of the inner circumferential surface of the through hole 23 to drive the adjustment rod 9 to extend and contract with respect to the ventilation hole 8.
Optionally, the adjusting member further comprises a driving member disposed at a first end of the adjusting rod 9 and capable of automatically driving the adjusting rod 9 to axially extend and contract relative to the ventilation hole 8 to open and close the ventilation hole 8 under the control of a controller. For example, the driving member may be a driving cylinder or the like, wherein the inner circumferential surface of the ventilation hole 8 may be engaged with the outer circumferential surface of the adjustment rod 9, in which case the diameters of the engaging surfaces of the ventilation hole 8 and the adjustment rod 9 may be formed to gradually expand radially outward from the first chamber 3 toward the second chamber 4, thereby opening the ventilation hole 8 when the driving member drives the adjustment rod 9 to axially protrude relative to the ventilation hole 8 by the control of the controller. As described above, not only the opening and closing of the ventilation hole 8 can be controlled manually by the operation member 30, but also the opening and closing of the ventilation hole 8 can be controlled automatically by the driving member, thereby improving the operation stability and the control accuracy of the air pressure of the first chamber 3. However, the present disclosure is not limited thereto, and the engagement structure of the adjustment lever 9 and the ventilation hole 8 may take other suitable forms.
Alternatively, as shown in fig. 1 and 3, a gap 27 is provided between the inner peripheral surface of the ventilation hole 8 and the outer peripheral surface of the adjustment lever 9, an annular limiting flange 11 matched with the outer peripheral surface of the adjusting rod 9 is formed on the inner peripheral surface of one end of the vent hole 8 corresponding to the second end of the adjusting rod 9 in a protruding mode, the stop flange 11 is formed with a first through hole 12 communicating with the second chamber 4 and the gap 27, the partition plate 2 is formed with a second through hole 13 communicating with the first chamber 3 and the gap 27, the second end of the adjusting rod 9 is formed with a valve plate 10 protruding radially outward and capable of sealing the first through-hole 12, in the first position, the valve plate 10 is separated from the end face of the position-defining flange 11 to open the first through-hole 12, in the second position, the valve plate 10 is pressed against the end face of the stop flange 11 to close the first through hole 12. Here, an annular guide plate may be formed to protrude from an outer circumferential edge of the stopper flange 11 to be gradually expanded outward, and the valve plate 10 may be located in the guide plate and an outer circumferential surface thereof may be formed in a shape corresponding to an inner circumferential surface of the guide plate, so that when the valve plate 10 opens the first through hole 12, the gas in the first chamber 3 is uniformly diffused into the second chamber 4 by being guided by the guide plate, or the gas flows from the second chamber 4 into the first chamber 3. In addition, a sealing gasket may be provided between the position-limiting flange 11 and the valve plate 10 to improve sealing reliability. However, the present disclosure is not limited thereto, and the adjustment member may have other suitable configurations.
Optionally, the first through holes 12 are plural and arranged on the limiting flange 11 along the circumferential direction, and the second through holes 13 are plural and arranged around the outer circumferential surface of the vent hole 8. Therefore, when the adjusting rod 9 is automatically driven by the driving piece to extend out of the vent hole 8, so that the valve plate 10 opens the first through hole 12, the gas in the first chamber 3 can sequentially pass through the second through hole 13, the gap 27 and the first through hole 12 and rapidly flow to the second chamber 4, so that the gas pressure in the first chamber 3 can be rapidly reduced, or the gas in the second chamber 4 can rapidly flow to the first chamber 3 through the first through hole 12, the gap 27 and the second through hole 13 at a time, and the automatic control efficiency is improved.
Optionally, the driving member comprises a bulb 19 disposed on the partition 2 and connected to a first end of the adjusting rod 9, and a temperature adjusting device connected to the bulb 19 and adapted to heat the bulb 19, wherein in a first position, the temperature adjusting device thermally expands the bulb 19 to drive the adjusting rod 9 to axially extend relative to the vent hole 8, and in a second position, the temperature adjusting device cools the bulb 19 to contract to drive the adjusting rod 9 to axially retract relative to the vent hole 8. Here, the temperature control device may have any suitable configuration as long as it can function to heat or cool the bulb 19. For example, the temperature regulating device may be a semiconductor heating and cooling device, and the driving member further includes a power supply for supplying power to the semiconductor heating and cooling device. Here, the heating and cooling of the bulb 19 can be achieved by controlling the direction of the current supplied to the semiconductor heating and cooling device, and thus the bulb can flexibly and rapidly drive the adjusting rod 19 to axially extend and contract with respect to the vent hole 8.
However, the disclosure is not limited to the above-mentioned embodiments, and as another alternative, the temperature adjusting device is a thermistor 18, and the driving member further includes a power supply 17 for supplying power to the thermistor 18. That is, the heating or cooling of the bulb 19 is achieved by controlling the power supply 17 to supply or stop supplying power to the thermistor 18. Here, optionally, as shown in fig. 1 and 2, the adjusting member further includes a housing 15 located in the first chamber 3 and disposed on the partition plate 2, the housing 15 has a housing cavity 16 corresponding to the vent hole 8, the thermistor 18 and the bulb 19 are located in the housing cavity 16, the bulb 19 is fitted over an outer peripheral surface of the thermistor 18 and has a gap 27 with an inner wall surface of the housing cavity 16, in the first position, the power supply 17 supplies power to the thermistor 18 so that the bulb 19 expands due to heat generated by the thermistor 18, and in the second position, the power supply 17 stops supplying power to the thermistor 18 so that the bulb 19 contracts due to cooling of the thermistor 18. Here, in order to make it possible to return the adjustment lever 9 to the initial position when the bulb 19 contracts, a spring fixed to the housing chamber 16 of the housing 15 may be fitted over the adjustment lever 9.
The thermistor 18 may be a positive temperature coefficient thermistor, the thermal bulb 19 may be a metal expansion type thermal bulb, and the power supply 17 may be disposed at various suitable positions such as the partition 2 or the housing 15, and the power supply 17 may be controlled to be turned on or off by a controller. In the first position, the power supply 17 supplies power to the thermistor 18, and the temperature sensing bulb 19 sleeved on the outer peripheral surface of the thermistor 18 expands in volume due to the influence of the temperature rise of the thermistor 18, so that the adjusting rod 9 is driven to axially extend relative to the vent hole 8 to open the vent hole 8. In the second position, the power supply 17 stops supplying power to the thermistor 18, and the temperature sensing bulb 19 contracts in volume due to the temperature drop of the thermistor 18, so that the adjusting rod 9 is driven to return to the initial position where it axially contracts relative to the vent hole 8, and the vent hole 8 is closed. Thereby, the first chamber 3 and the second chamber 4 are communicated or blocked from communicating by conveniently controlling the pressure adjusting structure through the structure, and the effect of high operation reliability is achieved. However, the present disclosure is not limited thereto, and the driving member may have any other suitable configuration as long as the function of driving the adjustment rod 9 to axially extend and contract with respect to the ventilation hole 8 is achieved, and for example, the driving member may have any other configuration such as a simple driving cylinder.
Alternatively, as shown in fig. 1, the pressure adjusting structure may be provided in plurality at intervals on the partition plate 2, the thermistor 18 of each adjusting member is exposed to the respective housing 15 and the thermistor 18 extends integrally, the thermistor 18 is parallel to the partition plate 2 and fixed at both ends to the first chamber 3, a sheath 26 is covered on an outer peripheral surface of an exposed portion of the thermistor 18, and the power supply 17 is provided on the sheath 26 and electrically connected to the thermistor 18. The plurality of pressure regulating structures can enable the gas in the first chamber 3 to uniformly and stably flow to the second chamber 4, reduce phenomena such as turbulence and turbulent flow in the first chamber 3 as much as possible, and directly influence the engine.
Alternatively, the partition plate 2 is horizontally arranged in the surge tank 1 such that the first chamber 3 is arranged above the second chamber 4 in the height direction, and the air inlet 5 and the air outlet 6 are arranged on opposite side walls of the first chamber 3. Therefore, the plateau air inlet simulation device of the engine has the advantages of simple and compact arrangement structure.
Optionally, the device for simulating altitude induction of the engine further includes a pressure gauge 20, a pressure sensor 21 and a controller 22 electrically connected to the pressure sensor 21, the pressure gauge 20 and the pressure sensor 21 are disposed on the first chamber 3 for detecting the pressure in the first chamber 3, and the controller 22 controls the pressure regulating structure to operate according to a signal detected by the pressure sensor 21 so as to connect or block the communication between the first chamber 3 and the second chamber 4. Here, the controller 22 is electrically connected to the power supply 17 as described above, and the pressure gauge 20 is used to visually display the air pressure in the first chamber 3 for direct observation by the operator. Here, when the pressure sensor 21 transmits a signal that the detected pressure in the first chamber 3 is higher than the pressure required for the plateau test to the controller 22, the controller 22 may control the power supply 17 to supply power to the thermistor 18 so that the temperature sensing bulb 19 expands due to heat generated by the thermistor 18 to drive the adjusting rod 9 to axially extend relative to the vent hole 8 to open the vent hole 8, whereby the gas in the first chamber 3 rapidly flows into the second chamber 4 through the vent hole 8. In this process, the controller 22 may control the power supply 17 to stop supplying power to the thermistor 18 according to the pressure signal detected by the pressure sensor 21 in real time, so that the pressure in the first chamber 3 can be accurately adjusted to the pressure required for the plateau test. In addition, when the pressure sensor 21 transmits a signal that the detected air pressure in the first chamber 3 is lower than the required air pressure for the high altitude test to the controller 22, the controller 22 may also adjust the air pressure in the first chamber 3 to the required air pressure for the high altitude test by controlling the opening degree of the throttle valve 14 on the intake port 5 of the first chamber 3. The control mode can conveniently simulate various altitude intake states to achieve the effect of accurately controlling the intake pressure of the engine. In addition, in the operating state, the pressure in the first chamber 3 is greater than the pressure in the second chamber 4, wherein a pressure hold is required for the second chamber 4, which is achieved by providing a non-return valve on a connecting pipe connected to the pressure supply and to the opening 7 of the second chamber 4.
Optionally, the pressure sensor 21 is disposed on a side wall of the first chamber 3 adjacent to the air outlet 6 and the partition 2. This enables the pressure sensor 21 to accurately detect the pressure of the intake air supplied from the first chamber 3 to the engine intake pipe, and thus avoids the engine from being affected by the airflow as much as possible. In addition, a pressure gauge 20 may be provided at an upper position of the first chamber 3 near the gas outlet 6 to facilitate observation and improve detection accuracy.
As described above, by connecting the air supply system to the air inlet 5 of the first chamber 3 of the surge tank 1, connecting the engine intake duct to the air outlet 6 of the first chamber 3, and connecting the pressure supply means to the second chamber 4 of the surge tank 1, the air supply system supplies air into the first chamber 3 of the surge tank 1 through the air inlet 5 to achieve simulation of a plurality of different high atmospheric pressures in the first chamber 3 in an operating state, and here, the pressure regulating structure provided on the surge tank 1 may be driven by manual operation using the operating member 30 to communicate the first chamber 3 with the second chamber 4, so that the air in the first chamber 3 can be discharged into the second chamber 4 to reduce the air pressure in the first chamber 3, or the air in the second chamber 4 flows into the first chamber 3 to increase the air pressure in the first chamber 3, thereby achieving precise regulation of the air pressure into the engine intake duct, the effect of simulating the plateau air inlet state and accurately controlling the air inlet pressure of the engine can be achieved. In addition, it is also possible for the pressure adjusting structure to take the form of the driving member connected to the controller to effect automatic driving to bring the first chamber 3 and the second chamber 4 into communication or to block the communication as described above, thereby improving the operation stability and the control accuracy of the air pressure in the first chamber 3.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (12)
1. The plateau air inlet simulation device of the engine is characterized by comprising a pressure stabilizing box (1), wherein a first chamber (3) and a second chamber (4) are formed in the pressure stabilizing box (1) in a separated mode through a partition plate (2), an air inlet (5) used for being connected with an air supply system and an air outlet (6) used for being connected with an air inlet pipe of the engine are formed in the first chamber (3), a throttle valve (14) used for adjusting air inflow is arranged on the air inlet (5), the second chamber (4) is used for being connected with a pressure supply device, a pressure adjusting structure which can be driven through manual operation of an operating component (30) to enable the first chamber (3) and the second chamber (4) to be communicated or blocked is arranged on the pressure stabilizing box (1) and used for increasing or reducing air pressure in the first chamber (3), the air intake device is configured to: after the air pressure in the first chamber (3) is preliminarily adjusted by the throttle valve (14), the air pressure in the first chamber (3) is further finely adjusted by the pressure adjusting structure.
2. The engine highland intake apparatus as simulated in claim 1, wherein the pressure adjusting structure includes a breather hole (8) formed in the partition plate (2) and an adjusting member provided on the partition plate (2) and capable of opening and closing the breather hole (8) by a manual operation of the operating member (30).
3. The device for simulating plateau air intake according to claim 2, wherein the partition plate (2) is formed with a receiving groove in the extending direction thereof, the receiving groove communicating with the vent hole (8), the adjusting member includes an adjusting rod (9) inserted through the vent hole (8), the adjusting rod (9) is formed with a through hole (23) transversely penetrating the adjusting rod (9), the operating member (30) is an operating rod and is movably inserted into the receiving groove and the through hole (23) along the extending direction from the outside of the surge tank (1), an operating block (31) is formed on a part of the outer peripheral surface of the operating rod in a protruding manner, in the first position, the operating block (31) is located in the through hole (23) and drives the adjusting rod (9) to axially extend relative to the vent hole (8) to open the vent hole (8), in a second closed position, the operating block (31) is located inside the housing groove and drives the adjusting rod (9) to axially retract relative to the vent hole (8) to close the vent hole (8).
4. The engine highland air intake apparatus as claimed in claim 3, wherein the operating block (31) is formed as an eccentric cam, and the operating rod is rotatably received in the receiving groove, so that the eccentric cam can drive the adjusting rod (9) to extend and retract relative to the ventilation hole (8) by rotation of the operating rod.
5. The device for simulating plateau air intake according to claim 3, wherein the adjusting member further comprises a driving member disposed at the first end of the adjusting rod (9) and capable of automatically driving the adjusting rod (9) to axially extend and retract relative to the vent hole (8) to open and close the vent hole (8) under the control of a controller.
6. The engine highland induction apparatus as claimed in claim 5, wherein a gap (27) is provided between the inner peripheral surface of the ventilation hole (8) and the outer peripheral surface of the adjusting lever (9), an annular limit flange (11) fitted to the outer peripheral surface of the adjusting lever (9) is formed on the inner peripheral surface of one end of the ventilation hole (8) corresponding to the second end of the adjusting lever (9) in a protruding manner, a first through hole (12) communicating with the second chamber (4) and the gap (27) is formed on the limit flange (11), a second through hole (13) communicating with the first chamber (3) and the gap (27) is formed on the partition plate (2), a valve plate (10) protruding radially outward and capable of sealing the first through hole (12) is formed on the second end of the adjusting lever (9), and in the first position, the valve plate (10) is separated from the end surface of the limit flange (11) to open the first through hole (12) ) And in the second position, the valve plate (10) is pressed on the end surface of the limiting flange (11) to close the first through hole (12).
7. The engine highland air intake apparatus as claimed in claim 6, wherein the first through hole (12) is plural and arranged circumferentially on the position-limiting flange (11), and the second through hole (13) is plural and arranged around the outer peripheral surface of the vent hole (8).
8. The device for simulating plateau air intake according to claim 5, wherein the driving member comprises a thermal bulb (19) disposed on the partition (2) and connected to a first end of the adjusting rod (9), and a temperature regulating device connected to the thermal bulb (19) and used for heating the thermal bulb (19), wherein in a first position, the temperature regulating device thermally expands the thermal bulb (19) to drive the adjusting rod (9) to axially extend relative to the vent hole (8), and in a second position, the temperature regulating device cools the thermal bulb (19) to contract to drive the adjusting rod (9) to axially retract relative to the vent hole (8).
9. The engine simulated plateau air inlet device of claim 8, wherein the temperature regulating device is a semiconductor heating refrigerator, and the driving member further comprises a power supply for supplying power to the semiconductor heating refrigerator.
10. The engine highland air intake apparatus as claimed in claim 8, wherein said temperature adjusting device is a thermistor (18), and said driving member further comprises a power supply (17) for supplying power to said thermistor (18).
11. The engine highland intake simulation apparatus as recited in claim 10, the adjustment means further comprising a housing (15) located in the first chamber (3) and arranged on the partition (2), the housing (15) having a receiving chamber (16) corresponding to the ventilation opening (8), the thermistor (18) and the temperature sensing bulb (19) are positioned in the accommodating cavity (16), the temperature sensing bulb (19) is sleeved on the outer peripheral surface of the thermistor (18) and has a gap 27 with the inner wall surface of the accommodating cavity (16), in the first position, the power supply (17) supplies power to the thermistor (18) such that the bulb (19) expands due to heat generation by the thermistor (18), in the second position, the power supply (17) stops supplying power to the thermistor (18) so that the bulb (19) contracts as the thermistor (18) cools.
12. The engine simulated plateau air intake apparatus according to claim 11, wherein the pressure adjusting structure is provided in plurality at intervals on the partition plate (2), the thermistor (18) of each adjusting member is exposed to the respective housing (15) and the thermistor (18) extends integrally, the thermistor (18) is parallel to the partition plate (2) and fixed at both ends to the first chamber (3), a sheath (26) covers an outer peripheral surface of an exposed portion of the thermistor (18), and the power supply (17) is provided on the sheath (26) and electrically connected to the thermistor (18).
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| CN201611213633.6A CN107490484B (en) | 2016-12-24 | 2016-12-24 | Plateau air inlet simulation device of engine |
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| CN201611213633.6A CN107490484B (en) | 2016-12-24 | 2016-12-24 | Plateau air inlet simulation device of engine |
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| CN107490484B true CN107490484B (en) | 2020-06-02 |
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| CN109904766A (en) * | 2019-04-12 | 2019-06-18 | 焦作华飞电子电器股份有限公司 | The comprehensive temperature and pressure stabilizing driving device of a kind of High aititude, low temperature environment electric-control system |
| CN112796911A (en) * | 2020-12-21 | 2021-05-14 | 中国船舶重工集团公司第七一一研究所 | Variable-volume air inlet box for ship engine and power system |
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Denomination of invention: Engine Simulated Plateau intake device Effective date of registration: 20211213 Granted publication date: 20200602 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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Date of cancellation: 20231201 Granted publication date: 20200602 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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