CN103759926A - Cylinder sleeve fatigue test device - Google Patents
Cylinder sleeve fatigue test device Download PDFInfo
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- CN103759926A CN103759926A CN201310673348.2A CN201310673348A CN103759926A CN 103759926 A CN103759926 A CN 103759926A CN 201310673348 A CN201310673348 A CN 201310673348A CN 103759926 A CN103759926 A CN 103759926A
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Abstract
The invention relates to a cylinder sleeve fatigue test device. An annular sunk groove (13) and an annular sealing protrusion (14) used for supporting a cylinder sleeve (3) are arranged on a bearing cylinder body (1), a counter bore matched with a combined cylinder cover (2) is formed in an upper opening of the cylinder body, an oil inlet port and a sensor port are formed in an oil inlet (6) and an upper port of a pressure monitoring hole (7) in the cylinder body respectively, the cylinder sleeve (3) is arranged in the bearing cylinder body (1), the combined cylinder cover (2) is arranged in the counter bore of the combined cylinder cover (2) and the cylinder sleeve (3) in a sealing sleeved mode, a cylinder cushion (4) is arranged at the position where the combined cylinder cover (2) is connected with the cylinder sleeve (3), and an upper edge opening of the cylinder sleeve (3) and a simulation combustor cavity form a simulation combustor (8). According to the cylinder sleeve fatigue test device, sealing hidden troubles in the cylinder body are eliminated, stability of the test process is improved, the adjusting range of the pressure in the cylinder body is enlarged, and a cylinder sleeve fatigue examination and a fault reappearance test are facilitated.
Description
Technical field
The invention belongs to cylinder jacket torture test field, be specifically related to a kind of cylinder jacket fatigue experimental device.
Background technology
Cylinder jacket, as the component part of engine chamber, is being born the periodicity effect of high temperature, high pressure in work, its structural strength and fatigue reliability are most important.The fault that particularly occurs convex shoulder fracture under the impact of shoulder of cylinder liner position due to various factorss such as overload, hypervelocity, insufficient rigidity.Product development stage is in order to find in time the weak link of cylinder jacket fatigue strength, and the feasibility of proof scheme, tends to carry out parts torture test on the basis of calculating emulation.Cylinder jacket torture test is generally divided into two kinds, and a kind of is that complete machine carries torture test, a kind of mechanical part torture test.The former process of the test is loaded down with trivial details, expense is high, have a big risk, efficiency is low.But cylinder jacket working environment is true, load combined action is obvious, and confidence level is high.The latter utilizes fluid pressure analog gas pressure, and test frequency is low, disappearance heating power influence, and load is single; Advantage is that process of the test is simple, and easy to assembly, cost is low, and test sample quantity, scheme etc. change flexibly, and load is controlled convenient, and Work condition analogue scope is large etc.In addition, the torture test of cylinder jacket parts mainly concentrates on the influence of pretension and in-cylinder pressure, is conducive to investigate its ability to bear to explosion pressure.
Summary of the invention
Technical matters to be solved by this invention is exactly that a kind of efficient air cylinder sleeve fatigue experimental device that improves the interior pressure of cylinder jacket parts torture test and stability will be provided.
The technical solution used in the present invention: a kind of Novel air cylinder sleeve fatigue experimental device, comprise pressure-bearing cylinder body 1, combination cylinder cap 2, cylinder jacket 3 and head gasket 4, pressure-bearing cylinder body 1 bottom is form of flanges and is fixed on testing laboratory's grade slab by foot bolt, on it, be provided with for supporting annular deep gouge 13 and the ring seal projection 14 of cylinder jacket 3, suitable for reading being provided with and the counterbore that combines cylinder cap 2 and match, combination cylinder cap 2 is formed a whole by nonstandard cylinder head 15 and nonstandard piston 16, on it, be provided with oil supply hole 6, in-cylinder pressure monitoring holes 7, upper port place at oil supply hole 6 and in-cylinder pressure monitoring holes 7 is respectively arranged with oil-feed interface and sensor interface, the bottom of combination cylinder cap 2 is provided with simulated combustion chamber cavity, cylinder jacket 3 peaces are arranged in pressure-bearing cylinder body 1, the annular outer ring of the protrusion by its place suitable for reading is connected in the annular deep gouge 13 of cylinder jacket 3, lower seal is pressed and is inserted in ring seal projection 14, combination cylinder cap 2 sealing shrouds are contained in the counterbore of described combination cylinder cap 2, combination cylinder cap 2 is provided with head gasket 4 with cylinder jacket 3 junctions, wherein the simulated combustion chamber cavity of the upper edge hole of cylinder jacket 3 and described combination cylinder cap 2 forms simulated combustion chamber 8.
Beneficial effect of the present invention:
The present invention has reduced nonstandard quantity on the basis of engine body parts cylinder jacket fatigue experimental device in the past, simplified test component, the effect of simulation Main Load, eliminated sealing hidden danger in cylinder, improved the stability of process of the test, expand in-cylinder pressure setting range, be conducive to the carrying out of the tired examination of cylinder jacket and recurrence of failure test.Concrete advantage has:
(1) this test unit is mainly comprised of test cylinder body and combination cylinder cap, and it is simple in structure, and physical strength is high, and carrying is stable, easy to assembly, and low cost of manufacture is multiple functional;
(2) this device adopts engineering practical structures to the support of cylinder jacket, accurate positioning, and clearance control and holding state are consistent, and water jacket sealing is complete, has certain authenticity;
(3) in cylinder, sealing adopts multilevel hierarchy, has effectively guaranteed, on the basis of in-cylinder pressure simulation, to have realized head gasket and cylinder jacket rigidity actual match.The stability and the pressure that have guaranteed process of the test change;
(4) cylinder bolt is arranged in strict accordance with complete machine, makes cylinder jacket under the effect of pretightning force, form basic predeformation, possesses the basis of dynamic load effect;
(5) in-cylinder combustion chamber has considered that in piston bottom clearance and piston first annular groove upper gap, combustion gas strengthens oil inlet quantity to the effect of cylinder jacket, has eliminated the existence of compressible air, makes it stressed more abundant.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of pressure-bearing cylinder body.
Embodiment
As shown in Figure 1, pressure-bearing cylinder body 1 is the main supporting structure of test unit, and it has simulation body rigidity state, supports test cylinder jacket 3, connects sealing function in combination cylinder cap 2 and auxiliary cylinders.Pressure-bearing inferior part of the cylinder block is form of flanges to be occupied stably on testing laboratory's grade slab, and can utilize foot bolt in addition fastening; This structure inner chamber designs according to complete machine cylinder-bore water jacket form, and lower support and hermetically-sealed construction in cylinder jacket are set, and forms simulation water jacket, and warranty test cylinder jacket 3 holding states are consistent with complete machine.The pressure-bearing cylinder body 1 around cylinder bolt hole of design is arranged according to machine requirement, keeps cylinder jacket reasonable stress when pretension.In addition, 1 design of pressure-bearing cylinder body and the counterbore that coordinates that combines cylinder cap 2, can assist and carry out sealing in cylinder.
The confined space of this test unit is exactly simulated combustion chamber 8, and bottom, firing chamber utilizes test cylinder jacket 3 and the method for combination cylinder cap 2 by radial seal to be sealed; The two seals groove arranging, is provided with O-ring seals and adds back-up ring structure.Top, firing chamber utilizes combination cylinder cap 2, head gasket 4,3 three plane contact of cylinder jacket to seal, and has kept contact and the sealing state of complete machine.The twice radial seal structure that combination cylinder cap 2 and pressure-bearing cylinder body are 1 can complete firing chamber secondary seal.In addition the hermetically-sealed construction that has retained cylinder jacket water jacket, one side is guaranteed the support stiffness of cylinder jacket, can assist on the other hand sealing in cylinder.
In cylinder jacket fatigue experimental device of the present invention, cylinder jacket 3 pretensions utilize cylinder bolt 5 to complete.Cylinder bolt 5 can be bolt or studs nut, and its selection principle is that maintenance securing member rigidity and complete machine are basic identical, and pretightning force size and installation specification are carried out in strict accordance with machine requirement.
The pressure simulation of apparatus of the present invention and monitoring: the gaseous-pressure bearing in cylinder jacket 3 work is when piston is near top dead centre, to reach maximum, therefore, cylinder jacket fatigue experimental device is controlled state during this time by the bags, and considers the small space on piston gas ring top and slightly strengthen; By oil supply hole 6 injection liquid force feeds, simulation cylinder jacket is born gas effect; Pressure monitoring hole 7 is connected with pressure transducer, monitors constantly in-cylinder pressure; Electrohydraulic servo system produces pulsed load and constantly touches in-cylinder pressure and change and make to test cylinder jacket and bear and periodically act on and then realize cylinder jacket torture test examination.
Claims (1)
1. a Novel air cylinder sleeve fatigue experimental device, it is characterized in that: comprise pressure-bearing cylinder body (1), combination cylinder cap (2), cylinder jacket (3) and head gasket (4), pressure-bearing cylinder body (1) bottom is form of flanges and is fixed on testing laboratory's grade slab by foot bolt, on it, be provided with for supporting annular deep gouge (13) and the ring seal projection (14) of cylinder jacket (3), suitable for reading being provided with and the counterbore that combines cylinder cap (2) and match, combination cylinder cap (2) is formed a whole by nonstandard cylinder head (15) and nonstandard piston (16), on it, be provided with oil supply hole (6), in-cylinder pressure monitoring holes (7), upper port place at oil supply hole (6) and in-cylinder pressure monitoring holes (7) is respectively arranged with oil-feed interface and sensor interface, the bottom of combination cylinder cap (2) is provided with simulated combustion chamber cavity, cylinder jacket (3) peace is arranged in pressure-bearing cylinder body (1), by the annular deep gouge (13) in pressure-bearing cylinder body (1) and ring seal projection (14) conduct, support, restriction cylinder sleeve moves with water jacket and seals, combination cylinder cap (2) sealing shroud is contained in the counterbore of described combination cylinder cap (2), combination cylinder cap (2) is provided with head gasket (4) with cylinder jacket (3) junction, wherein the simulated combustion chamber cavity of the upper edge hole of cylinder jacket (3) and described combination cylinder cap (2) forms simulated combustion chamber (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310673348.2A CN103759926B (en) | 2013-12-12 | 2013-12-12 | Cylinder sleeve fatigue test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310673348.2A CN103759926B (en) | 2013-12-12 | 2013-12-12 | Cylinder sleeve fatigue test device |
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| CN103759926A true CN103759926A (en) | 2014-04-30 |
| CN103759926B CN103759926B (en) | 2016-04-27 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535604A (en) * | 2014-11-11 | 2015-04-22 | 中国北方发动机研究所(天津) | A head gasket thermal resistance measuring device |
| CN104776999A (en) * | 2015-03-27 | 2015-07-15 | 中国北方发动机研究所(天津) | Mechanical fatigue test device for combined piston of engine |
| CN105699086A (en) * | 2016-03-09 | 2016-06-22 | 广西玉柴机器股份有限公司 | Reproduction and verification method for cavitation fault on surface of cylinder liner |
| CN105841890A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Cylinder seal mechanical fatigue test device |
| WO2016155088A1 (en) * | 2015-04-01 | 2016-10-06 | 江苏师范大学 | Vertical cylinder sleeve piston ring friction-wear test device |
| CN104406780B (en) * | 2014-11-18 | 2017-04-26 | 潍柴动力股份有限公司 | Internal combustion engine cylinder fatigue test device |
| CN112345256A (en) * | 2020-11-19 | 2021-02-09 | 中国第一汽车股份有限公司 | Engine cylinder fatigue test method |
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| US4937927A (en) * | 1986-10-30 | 1990-07-03 | Slinger Manufacturing Company, Inc. | Method of joining a sleeve into a cylinder opening of a reciprocating piston |
| CN201255692Y (en) * | 2008-09-18 | 2009-06-10 | 河南省中原内配股份有限公司 | Cylinder liner fatigue test mechanism |
| CN101706370A (en) * | 2009-04-29 | 2010-05-12 | 深圳市普禄科智能检测设备有限公司 | Device and method for diagnosing cylinder of diesel engine |
| CN101975119A (en) * | 2010-09-18 | 2011-02-16 | 中国兵器工业集团第七○研究所 | Novel internal-combustion engine |
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| CN102661823A (en) * | 2012-05-12 | 2012-09-12 | 中国兵器工业集团第七0研究所 | Cylinder sleeve piston ring group friction work test device |
| CN102928285A (en) * | 2012-11-07 | 2013-02-13 | 中钢集团洛阳耐火材料研究院有限公司 | Dynamic seal force valve transmission system for high-temperature mechanics testing machine to apply loads |
| JP2013130091A (en) * | 2011-12-21 | 2013-07-04 | Hino Motors Ltd | Method for machining cylinder liner of air compressor |
| CN103196614A (en) * | 2013-03-18 | 2013-07-10 | 中国兵器工业集团第七0研究所 | Airway pressure measuring system |
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2013
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| GB1328676A (en) * | 1969-10-09 | 1973-08-30 | Goetzewerke Friedrich Goete Ag | Apparatus for testing engine parts |
| US4937927A (en) * | 1986-10-30 | 1990-07-03 | Slinger Manufacturing Company, Inc. | Method of joining a sleeve into a cylinder opening of a reciprocating piston |
| CN201255692Y (en) * | 2008-09-18 | 2009-06-10 | 河南省中原内配股份有限公司 | Cylinder liner fatigue test mechanism |
| CN101706370A (en) * | 2009-04-29 | 2010-05-12 | 深圳市普禄科智能检测设备有限公司 | Device and method for diagnosing cylinder of diesel engine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535604A (en) * | 2014-11-11 | 2015-04-22 | 中国北方发动机研究所(天津) | A head gasket thermal resistance measuring device |
| CN104535604B (en) * | 2014-11-11 | 2017-03-15 | 中国北方发动机研究所(天津) | A kind of head gasket heat resistance test apparatus |
| CN104406780B (en) * | 2014-11-18 | 2017-04-26 | 潍柴动力股份有限公司 | Internal combustion engine cylinder fatigue test device |
| CN104776999A (en) * | 2015-03-27 | 2015-07-15 | 中国北方发动机研究所(天津) | Mechanical fatigue test device for combined piston of engine |
| CN104776999B (en) * | 2015-03-27 | 2017-08-11 | 中国北方发动机研究所(天津) | A kind of engine combines piston machine fatigue experimental device |
| WO2016155088A1 (en) * | 2015-04-01 | 2016-10-06 | 江苏师范大学 | Vertical cylinder sleeve piston ring friction-wear test device |
| CN105699086A (en) * | 2016-03-09 | 2016-06-22 | 广西玉柴机器股份有限公司 | Reproduction and verification method for cavitation fault on surface of cylinder liner |
| CN105841890A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Cylinder seal mechanical fatigue test device |
| CN112345256A (en) * | 2020-11-19 | 2021-02-09 | 中国第一汽车股份有限公司 | Engine cylinder fatigue test method |
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| CN103759926B (en) | 2016-04-27 |
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