CN209841390U - Engine cylinder cover test device with replaceable air inlet channel - Google Patents
Engine cylinder cover test device with replaceable air inlet channel Download PDFInfo
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- CN209841390U CN209841390U CN201920835160.6U CN201920835160U CN209841390U CN 209841390 U CN209841390 U CN 209841390U CN 201920835160 U CN201920835160 U CN 201920835160U CN 209841390 U CN209841390 U CN 209841390U
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- end cover
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Abstract
An engine cylinder cover test device with a replaceable air inlet passage comprises an upper end cover, a lower end cover, an upper valve spring seat, a valve spring, a valve lock pin, a valve, a spring seat type clamping sleeve, a groove type hoop, an oil sprayer seat, an end cover pillar, a thin-wall air passage, connecting threads and connecting holes; the thin-wall air passage is connected with the lower end cover through a groove type clamp and connected with the valve through a spring seat type clamping sleeve through 3D printing; the upper end cover and the lower end cover are connected through an end cover pillar, the upper end cover is fixedly connected with the lower surface of the engine cylinder cover through a connecting hole, a groove connected with an optical engine is processed in the middle of the bottom of the lower end cover, and the lower end cover is fixedly connected with an engine cylinder sleeve through a connecting hole. The utility model has simple and compact structure, is matched with the PIV, the optical engine and the air inlet channel test bed, does not change other parts of the engine, can conveniently replace the air inlet channel of the engine under the condition of not disassembling the engine, and has simple and convenient operation; the test bench can be used for testing air inlet channels in different forms and measuring vortex and flow coefficient.
Description
Technical Field
The utility model belongs to the technical field of automobile engine, concretely relates to engine cylinder lid test device of removable intake duct.
Background
The vehicle diesel engine mainly uses a medium and small high-speed diesel engine, a semi-open combustion chamber is mostly adopted, and the intake vortex has great effect on the formation of turbulence in an intake stroke cylinder. Because of the compression ignition mode, the diesel engine can not optimize combustion by accurately controlling ignition timing, and a reasonable combination of an air inlet system, a fuel injection system and the geometric shape of a combustion chamber is needed, and turbulence is formed in an air cylinder in the air inlet process, so that the high speed of mixing fuel and air is ensured. The intake vortex is one of the key factors influencing the combustion of the diesel engine, and mainly depends on the shape of an intake passage, and the intake passage has various forms and complex structures and is cast in a cylinder head. Scholars at home and abroad study the influence of a plurality of structural parameters such as the shape, the position deviation, the minimum section, the spiral slope angle, the height of the vortex chamber, the base slope angle, the eccentricity, the spiral wrap angle and the like of the air inlet channel on the vortex ratio and the flow coefficient. Because the engine air flue is cast in the cylinder head, and is generally a multi-cylinder all-in-one machine, when carrying out different air flue researches, need change different cylinder heads, the cost is higher, and in most cases need to carry out cutting process to the cylinder head or carry out sealing operation to other air inlet structures that can not use, and the process is loaded down with trivial details. The utility model has the advantages that the thin-wall air passage is manufactured independently, other parts of the engine do not need to be cut or sealed, the installation and the replacement are convenient, different forms of air inlet passage bench tests can be carried out, and the matching problem of the air passages with different forms and the geometric shapes of the combustion chambers can be researched; the air flow in the engine is complex and various, the air passage is made of transparent materials, and the air passage is matched with the PIV, the optical engine and the air inlet passage test bed, so that the air flow test bed can be used as an important visual optical diagnosis means, the flowing condition of fluid in the air passage can be conveniently observed, the vortex and the flow coefficient can be measured, and the research on the air inlet process of the engine is facilitated.
Disclosure of Invention
The utility model aims at printing engine thin wall intake duct alone through 3D, install on the engine test bench, change air flue that can be convenient, different engines require differently to the shape quantity of intake duct, it is than cutting change or sealed cylinder cap simple easy operation, the research of carrying out different air flues that same test bench can be convenient has been realized, print through transparent material 3D, wall thickness 3 ~ 5 millimeter within range, cooperation PIV, optical engine and intake duct test bench, the fluid flow condition in the air flue is directly perceived to the observation, conveniently measure vortex and flow coefficient.
The utility model comprises an upper end cover, a valve lock pin, an upper valve spring seat, a valve spring, a spring seat type cutting sleeve, an end cover pillar, a thin-wall air passage, an oil sprayer seat, a groove type clamp, a lower end cover, a valve, a connecting thread and a connecting hole; the upper end cover and the lower end cover are provided with connecting threads which are connected through an end cover strut and play a supporting role; the thin-wall air passage is connected with the lower end cover through a groove type clamp; the lower part of the spring seat type clamping sleeve is screwed on the thin-wall air passage through threads to replace a valve guide pipe, and in order to ensure air tightness, the threads on the lower part of the spring seat type clamping sleeve are wound with raw material belts; the spring seat type cutting sleeve is connected with the valve through a valve spring, an upper valve spring seat and a valve lock pin 2.
The thin-wall air passage has air passages in various forms such as tangential and spiral and is formed by 3D printing of transparent photosensitive resin materials, the wall thickness is 3 ~ 5 mm, the thin-wall air passage is independently replaceable, and the thin-wall air passage can be made of transparent materials such as acrylic PMMA materials and PC materials.
When the air inlet is independently researched, the exhaust passage is sealed, or the exhaust passage is not manufactured, and the mounting interface of the exhaust passage and the lower end cover is directly sealed.
The spring seat type cutting sleeve is composed of a joint body, a cutting sleeve and a spring seat nut, wherein the joint body replaces the function and the position of a valve guide pipe, the valve guide pipe is screwed on an air passage, a raw material belt is wound on the joint body for ensuring the air tightness, the inner surface is in direct contact with a valve rod and plays a guiding role in the valve rod, a spring seat is arranged on the outer ring of the spring seat nut, a valve spring is placed and plays a radial stabilizing role in the valve spring, the upper end of the valve spring is placed with the valve spring seat, the upper valve spring seat is fixed by a valve lock pin, and a radial hole for installing the valve lock pin is processed at the tail part.
The upper end cover and the lower end cover are in threaded connection through the end cover support, the upper end cover and the lower end cover are machined with connecting threads in different directions, reverse threads corresponding to the upper end cover and the lower end cover are machined at the two ends of the end cover support, the four end cover supports are simultaneously screwed on the connecting threads, sufficient and firm space is provided for air passage replacement and installation, and the upper end cover and the lower end cover 10 are machined with connecting holes, so that normal connection with other parts of an engine is facilitated.
The utility model discloses a theory of operation and process are:
the utility model comprises an upper end cover, a valve lock pin, an upper valve spring seat, a valve spring, a spring seat type cutting sleeve, an end cover pillar, a thin-wall air passage, an oil sprayer seat, a groove type clamp, a lower end cover, a valve, a connecting thread and a connecting hole; wherein the thin-wall air passage is connected with the lower end cover through a groove type hoop; the lower part of the spring seat type clamping sleeve is provided with threads for winding the thread tape and screwing the thread tape on the air passage so as to ensure the air tightness; the spring seat type cutting sleeve is connected with the valve through a valve spring, an upper valve spring seat and a valve lock pin; the middle of the bottom of the lower end cover is provided with a clamping groove which can be connected with an optical engine and is fixedly connected with the cylinder sleeve through a bolt; the upper end cover and the lower end cover are respectively provided with connecting threads in opposite directions, the two ends of the end cover strut are provided with external threads corresponding to the connecting threads, the connecting threads are connected through the end cover strut and play a supporting role, the upper end cover and the lower end cover are provided with connecting holes connected with other parts, and the upper surface of the lower end cover is provided with a protruding part connected with a thin-wall air passage and an oil injector seat for placing an oil injector. When the gas flow in an engine, particularly the gas flow in the air intake process, is researched, an engine control system coordinately controls different parts of the engine to work, trace particles are added into the gas after the required test conditions are met, two pictures of the positions of the trace particles are shot at short time intervals in an illumination plane in a flow field through PIV, the positions of the trace particles are compared, the speed distribution condition on the illumination plane of the whole flow field can be obtained, and then an optical engine and an air inlet channel test bed are matched, when the air flow passes through an air channel, a valve driving mechanism drives a valve to move regularly, the vortex motion condition of the flow field of the gas in the air channel can be conveniently and visually observed, and the vortex and the flow coefficient can also be measured; when different forms of air inlet channel bench tests are carried out and the matching of different forms of air passages and the geometric shapes of the combustion chamber is researched, other parts of the engine can be changed without being detached, and the air passages in different shapes can be conveniently replaced for research.
The utility model has the advantages that:
1. the device is matched with the PIV, the optical engine and the air inlet channel test bed to carry out different forms of air inlet channel bench tests, the matching problem of air passages with different forms and combustion chamber geometric shapes is researched, the vortex motion condition of a flow field in the air inlet channel can be conveniently observed, the vortex and the flow coefficient are measured, and the device is favorable for the optical diagnosis test research of the air inlet process of the engine.
2. Because the engine air flue is cast in the cylinder head, and is generally a multi-cylinder all-in-one machine, when carrying out different air flue researches, need change different cylinder heads, the cost is higher, and in most cases need to carry out cutting process to the cylinder head or carry out sealing operation to other air inlet structures that can not use, and the process is loaded down with trivial details. The utility model discloses a make thin wall air flue alone, need not cut or sealed the processing other parts of engine, can reduce the dismantlement to engine cylinder cover portion, convenient change different shapes air flue, it is easy and simple to handle.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention
Fig. 2 is an explosion diagram of the main structure of the present invention.
Wherein: 1-upper end cover, 2-valve lock pin, 3-upper valve spring seat, 4-valve spring, 5-spring seat type cutting sleeve, 6-end cover pillar, 7-thin wall air channel, 8-oil sprayer seat, 9-groove type hoop, 10-lower end cover, 11-valve, 12-connecting thread and 13-connecting hole.
Detailed Description
As shown in figures 1 and 2, the air flow test device comprises an upper end cover 1, an air valve lock pin 2, an upper air valve spring seat 3, an air valve spring 4, a spring seat type clamping sleeve 5, an end cover pillar 6, a thin-wall air passage 7, an oil injector seat 8, a groove type clamping sleeve 9, a lower end cover 10, an air valve 11, a connecting thread 12 and a connecting hole 13, wherein the thin-wall air passage 7 is connected with the lower end cover 10 through the groove type clamping sleeve 9, the lower portion of the spring seat type clamping sleeve 5 is wound with a raw material belt in a threaded mode and screwed on the air passage to guarantee air tightness, the spring seat type clamping sleeve 5 is connected with the air valve 11 through the air valve spring 4, the upper air valve spring seat 3 and the air valve lock pin 2, the lower surface of the lower end cover 10 is provided with a groove connected with an optical engine and is connected to an air cylinder sleeve through a bolt, the upper end cover 1 and the lower end cover 10 are respectively provided with the connecting thread 12 in opposite directions, external threads corresponding to the end of the end cover pillar 6 are processed at two ends, the end covers are connected with the connecting holes 13 connected with other parts through the end cover pillar 6 and play a supporting role, the upper end cover is processed with a protruding portion connected with the oil injector connected with the upper end cover and the lower end cover 10, the air passage, the air injector 8 is processed with a thin-wall-type air-flow test device, the air passage-flow test device, the air-flow test device is processed with a transparent material 353, the air-flow test device, the air passage, the air-flow test device, the air-flow test device is processed with a plug-flow test device, the air-flow test device.
Spring seat formula cutting ferrule 6 comprises the joint body, the cutting ferrule, spring holder nut triplex, the joint body replaces the effect and the position of valve guide, screw up on the air flue, for guaranteeing the gas tightness, twine the thread seal area on the joint body, replace the effect of valve guide, internal surface direct contact valve stem, play the guide effect to the valve stem, there is the spring holder 4 in the spring holder nut outer lane, place valve spring 4, play radial stabilizing action to valve spring holder 4 simultaneously, valve spring holder 3 is placed to valve spring holder 4 upper end, fix valve holder spring holder 3 with valve lock pin 2, it has the radial hole that is used for installing the lockpin to correspond 11 valve stem afterbody processing of valve.
Claims (5)
1. An engine cylinder cover test device with a replaceable air inlet passage is characterized by comprising an upper end cover (1), an air valve lock pin (2), an upper air valve spring seat (3), an air valve spring (4), a spring seat type clamping sleeve (5), an end cover pillar (6), a thin-wall air passage (7), an oil sprayer seat (8), a groove type clamping sleeve (9), a lower end cover (10), an air valve (11), a connecting thread (12) and a connecting hole (13), wherein the upper end cover (1) and the lower end cover (10) are processed with the connecting thread (12) and are connected through the end cover pillar (6) to play a supporting role, the wall thickness of the thin-wall air passage (7) is 3 ~ 5 mm, the thin-wall air passage (7) is connected with the lower end cover (10) through the groove type clamping sleeve (9), the lower portion of the spring seat type clamping sleeve (5) is screwed onto the air passage, a raw material belt is wound on the thread on the lower portion of the spring seat type clamping sleeve (5), and the spring seat type clamping sleeve (5).
2. The engine cylinder cover test device with the replaceable air inlet channel is characterized in that the thin-wall air channel (7) is formed by 3D printing of a transparent photosensitive resin material, the wall thickness is 3 ~ 5 mm, and the thin-wall air channel is independently replaceable.
3. The engine cylinder head test device with the replaceable intake duct of claim 1, characterized in that: the thin-wall air passage (7) is made of an acrylic PMMA material or a PC material.
4. The engine cylinder head test device with the replaceable intake duct of claim 1, characterized in that: spring seat formula cutting ferrule (5) constitute by the connector body, cutting ferrule, spring retainer nut, there is the spring holder nut outer lane, place valve spring (4), play radial stabilization to valve spring (4) simultaneously, valve spring (4) upper end is placed and is gone up valve spring holder (3), fixes valve spring holder (3) with valve lock pin (2), corresponds valve (11) valve stem afterbody processing and has the radial hole that is used for installing the lockpin.
5. The engine cylinder head test device with the replaceable intake duct of claim 1, characterized in that: the upper end cover (1) is connected with the lower end cover (10) through an end cover strut (6), the upper end cover and the lower end cover are respectively provided with connecting threads (12) in opposite directions, and two ends of the end cover strut are provided with opposite threads corresponding to the connecting threads, so that the connecting and supporting functions are achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835160.6U CN209841390U (en) | 2019-06-05 | 2019-06-05 | Engine cylinder cover test device with replaceable air inlet channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835160.6U CN209841390U (en) | 2019-06-05 | 2019-06-05 | Engine cylinder cover test device with replaceable air inlet channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209841390U true CN209841390U (en) | 2019-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920835160.6U Expired - Fee Related CN209841390U (en) | 2019-06-05 | 2019-06-05 | Engine cylinder cover test device with replaceable air inlet channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209841390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044633A (en) * | 2019-06-05 | 2019-07-23 | 吉林大学 | A kind of engine cylinder cover experimental rig of replaceable air intake duct |
-
2019
- 2019-06-05 CN CN201920835160.6U patent/CN209841390U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044633A (en) * | 2019-06-05 | 2019-07-23 | 吉林大学 | A kind of engine cylinder cover experimental rig of replaceable air intake duct |
| CN110044633B (en) * | 2019-06-05 | 2024-01-26 | 吉林大学 | Engine cylinder cover test device with replaceable air inlet channel |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |