CN103969050A - Backpressure regulating device of single-cylinder engine - Google Patents
Backpressure regulating device of single-cylinder engine Download PDFInfo
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- CN103969050A CN103969050A CN201410182635.8A CN201410182635A CN103969050A CN 103969050 A CN103969050 A CN 103969050A CN 201410182635 A CN201410182635 A CN 201410182635A CN 103969050 A CN103969050 A CN 103969050A
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- choker
- butterfly valve
- line
- tapering
- straight tube
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention relates to a backpressure regulating device of a single-cylinder engine. The backpressure regulating device of the single-cylinder engine comprises a straight cylinder type throttling pipe (1), a secondary butterfly valve (2), a tapered throttling pipe (9), a primary butterfly valve (8), a limiting screw (10) and a regulation locking device, wherein the two sides of the straight cylinder type throttling pipe (1) are connected with an exhaust passage and the tapered throttling pipe (9) respectively, and the tapered throttling pipe (9) is connected with an exhaust pipe. According to the backpressure regulating device of the single-cylinder engine, flexible regulation of exhaust backpressure of the testing engine can be achieved, the backpressure regulating device has the advantages that both machining and installation are convenient and breakdowns can be handled conveniently, a user just needs to rotate a driving screw to adjust the opening degrees of the secondary butterfly valve (2) and the primary butterfly valve (8) and then lock the secondary butterfly valve (2) and the primary butterfly valve (8) so that different backpressure requirements during engine performance testing can be met, complicated adjustment of the exhaust pipe is not needed any more, and time cost and economic cost required during performance research and development of the testing engine are reduced.
Description
Technical field
The invention belongs to engine test technical field, be specifically related to a kind of single-barrel engine test back pressure regulator device.
Background technology
Single-barrel engine plays very important effect in engine development process, develop in advance with the special item combustion process of volume production test platform and information support are provided for fundamental research, meet for follow-up complete machine exploitation provides the Combustion system matching scheme that performance index require.Be limited to the singularity of single cylinder engine and complete machine structure and test condition, single-barrel engine is difficult to accomplish in full accord with overall performance, on inlet and exhaust system, exist especially larger difference, the exhaust resistance producing in order to simulate more really the unit such as the latter linked supercharger of complete machine gas outlet, EGR, single-barrel engine is designed with back pressure regulator device after gas outlet, realize the consistent of single cylinder engine and resistance after complete machine gas outlet by adjusting back pressure regulator device, and then realize single cylinder engine performance and the maximum consistance of overall performance.
Application number a kind of internal combustion engine performance low-pressure simulating test stage that has been 02104207.1 Patent Application Publication, formed by atmosphere back pressure regulator device in intake simulation device, exhaust back pressure regulating device, engine crankcase and simulated high altitude environment low voltage starter, the vacuum extractor that wherein exhaust back pressure regulating device is connected by pipeline by exhaust tube of pressure-stabilizing, with it and the exhaust pressure regulator valve being arranged on pipeline form, and low pressure test (LPT) platform can be simulated the atmospheric pressure of different altitude height.But the disclosed exhaust back pressure regulating device of above-mentioned prior art exists exhaust back pressure to regulate technical matters slow, that exhaust back pressure is difficult to accurate control.
Summary of the invention
The present invention is directed to the technical matters that the exhaust back pressure of single cylinder diesel need to regulate according to the resistance after complete machine gas outlet, proposed a kind of single cylinder engine back pressure regulator device.
The technical solution adopted in the present invention is:
A kind of single cylinder engine back pressure regulator device, comprise straight tube choker-line 1, secondary butterfly valve 2, tapering choker-line 9, one-level butterfly valve 8, Limit screw 10 and regulation locking device, described straight tube choker-line 1 both sides are connected with exhaust passage and tapering choker-line 9 respectively, tapering choker-line 9 is connected with gas outlet, it is characterized in that: the middle part outer radial of described straight tube choker-line 1 and tapering choker-line 9 has respectively two corresponding boss with threaded hole 15, there are respectively two radially corresponding boss at described one-level butterfly valve 8 and secondary butterfly valve 2 middle parts, in one of them boss, it is square hole, in another boss, it is circular hole, Limit screw 10 is embedded in the circular hole of secondary butterfly valve 2 and one-level butterfly valve 8 through the boss with threaded hole 15 of straight tube choker-line 1 and tapering choker-line 9 respectively, and each Limit screw 10 is locked locking by two set nuts 3, regulation locking device is embedded in the square hole of secondary butterfly valve 2 and one-level butterfly valve 8 through the boss with threaded hole 15 of straight tube choker-line 1 and tapering choker-line 9 respectively, adjusts respectively as requested aperture the locking of secondary butterfly valve 2 and one-level butterfly valve 8.
Preferably regulation locking device is two drive screws 5, the bottom of described drive screw 5 is square cylinders corresponding with the square hole of secondary butterfly valve 2 and one-level butterfly valve 8, be embedded in the square hole of secondary butterfly valve 2 and one-level butterfly valve 8 through the boss with threaded hole 15 of straight tube choker-line 1 and tapering choker-line 9 respectively, each drive screw 5 is locked locking by two set nuts 3.
The aperture of butterfly valve when clearly testing, valve location indicator stem 6 is set on the regulation locking device of single cylinder engine back pressure regulator device, described valve location indicator stem 6 is arranged on drive screw 5, on described drive screw 5, there is an instruction tapped through hole 16 vertical with the faceted pebble of bottom square cylinder, after the instruction tapped through hole 16 that valve location indicator stem 6 passes on drive screw 5, fixing by locking primary nut 4.
For preventing having waste gas to spill between straight tube choker-line 1 and tapering choker-line 9, the sealing gasket 7 of Leakage prevention is set at straight tube choker-line 1 and tapering choker-line 9.
Beneficial effect of the present invention: by the adjustment to its two-stage butterfly valve aperture position, realize the flexible adjustment to single-barrel engine exhaust back pressure, make its performance and overall performance keep maximum consistance, this device has following characteristics: " back pressure regulator device " simple in structure being convenient to processed, be designed with tapering choker-line, can realize the reduction of exhaust flow rate, the serviceable life of parts after raising gas outlet, be designed with " valve location indicator stem ", the convenient position of controlling two-stage butterfly valve, be designed with two-stage backpressure regulation butterfly valve, can regulate more accurately back pressure, by controlling the position of two-stage butterfly valve, can accomplish at the approximate simulation to complete machine exhaust pressure wave, needed time cost and financial cost in performance test process are reduced.
Brief description of the drawings
Fig. 1 is back pressure regulator device component diagram;
Fig. 2 is straight tube choker-line cut-open view;
Fig. 3 is straight tube choker-line left view;
Fig. 4 is straight tube choker-line right view;
Fig. 5 is butterfly valve front view;
Fig. 6 is butterfly valve vertical view;
Fig. 7 is butterfly valve upward view;
Fig. 8 is tapering choker-line front view;
Fig. 9 is tapering choker-line left view;
Figure 10 is drive screw front view;
Figure 11 is drive screw upward view;
Figure 12 is Limit screw front view;
Figure 13 is Limit screw upward view;
Figure 14 is valve location indicator stem front view.
Embodiment
The concrete structure of 1 pair of single cylinder engine back pressure regulator device is elaborated by reference to the accompanying drawings:
A kind of back pressure simulation mechanism, comprise straight tube choker-line 1, secondary butterfly valve 2, set nut 3, locking primary nut 4, drive screw 5, valve location indicator stem 6, seal pad 7, one-level butterfly valve 8, tapering choker-line 9, Limit screw 10, M10 × 45 bolt standard component 11, M10 nut standard component 12, M10 bullet pad standard component 13, M10 plain cushion standard component 14, straight tube choker-line 1 both sides are circular joint flange, be connected with exhaust passage and tapering choker-line 9 respectively, in straight tube choker-line 1 vertical direction, be furnished with two boss, in boss, have the tapped through hole of M20 × 2; Between straight tube choker-line 1 and tapering choker-line 9, be connected with flange, and adopt 6 groups of standard components: M10 × 45 bolt 11, M10 nut 12, M10 bullet pad 13, M10 plain cushion 14 are fastenedly connected; For preventing having waste gas to spill between straight tube choker-line 1 and tapering choker-line 9, sealing gasket 7 is arranged between straight tube choker-line 1 and tapering choker-line 9; For realizing more fastening connection, tapering choker-line 9 both sides are designed to circular joint flange, and two boss that are connected with gas outlet and straight tube throttling valve 1 respectively, are furnished with in its vertical direction have the tapped through hole of M20 × 2 in boss; For realizing the spacing of two-stage butterfly valve and driving, two drive screws 5 are embedded in the square opening of two-stage butterfly valve top through the tapped through hole of straight tube choker-line 1 and tapering choker-line 9 M20 × 2, top respectively, and each drive screw is locked, prevented from becoming flexible by two set nuts 3; Two Limit screws 10 are embedded in the circular port of two-stage butterfly valve below through M20 × 2 tapped through hole of straight tube choker-line 1 and tapering choker-line 9 belows respectively, and each Limit screw is locked, prevented from becoming flexible by two set nuts; For realizing the accurate control to two-stage butterfly valve position, valve location indicator stem 6 is installed on drive screw 5, its stupefied of driving four directions that tapped through hole and drive screw 5 belows are installed is perpendicular, after the tapped through hole that valve location indicator stem 6 passes on drive screw 5, fixing with locking primary nut 4.
Installation and control method to single cylinder engine back pressure regulator device are elaborated:
1) one-level butterfly valve 8 is positioned in tapering choker-line 9, makes its maximum resistance face parallel with tapering choker-line 9 entrance sections;
2) two set nuts 3 are arranged on Limit screw 10, and are screwed into the root of Limit screw 10 6 square toes, fastening without reinforcing;
3) Limit screw 10 that two set nuts 3 are installed is screwed into from the threaded hole of tapering choker-line 9 belows, and the cylindrical end that makes Limit screw 10 is embedded in one-level butterfly valve 8, adjust the degree of depth that is screwed into of Limit screw 10, guarantee that one-level butterfly valve is positioned at tapering choker-line 9 centers, after Limit screw 10 location positionings, then Limit screw 10 and tapering choker-line 9 are carried out fastening, locking with two set nuts 3;
4) two set nuts 3 are arranged on drive screw 5, and are screwed into the root of drive screw 5 six square toes, fastening without reinforcing
5) drive screw 5 that two set nuts 3 are installed is screwed into from the threaded hole of tapering choker-line 9 tops, and the four directions end that makes drive screw 5 is embedded in one-level butterfly valve 8, that adjusts drive screw 5 is screwed into the degree of depth, then drive screw 5 and tapering choker-line 9 is carried out fastening, locking with two set nuts 3;
6) valve location indicator stem 6 is installed to the fastening complete drive screw 5 of tapering choker-line 9 on, and with locking primary nut 4, it is fastening;
7) secondary butterfly valve 2 is positioned in straight tube choker-line 1, makes its maximum resistance face parallel with tapering choker-line entrance section;
8) repeating step 2～6 installs the parts such as secondary butterfly valve 2, Limit screw 10, drive screw 5, valve location indicator stem 6 on straight tube choker-line 1, guarantees that secondary butterfly valve 2 is positioned at straight tube choker-line 1 center;
9) seal pad 7 is placed in to the groove of straight tube choker-line 1 right side, and with 6 groups of M10 × 45 bolt standard components 11, M10 nut standard component 12, M10 bullet pad standard component 13, M10 plain cushion standard component 14, by the straight tube choker-line 1 after installing be connected with tapering choker-line 9, fastening;
10) the straight tube choker-line 1 having connected and tapering choker-line 9 parts are arranged between the exhaust pipe of engine and exhaust passage, wherein the small end face of tapering choker-line 9 is connected with gas outlet, and the end face of straight tube choker-line 1 is connected with exhaust passage;
11) in process of the test, as adjusted exhaust back pressure: adjust two set nuts 3 of pine, then pull two-stage drive screw rod 5 to formulating position and again carrying out fastening to set nut 3.
Claims (4)
1. a single cylinder engine back pressure regulator device, comprise straight tube choker-line (1), secondary butterfly valve (2), tapering choker-line (9), one-level butterfly valve (8), Limit screw (10) and regulation locking device, described straight tube choker-line (1) both sides are connected with exhaust passage and tapering choker-line (9) respectively, tapering choker-line (9) is connected with gas outlet, it is characterized in that: the middle part outer radial of described straight tube choker-line (1) and tapering choker-line (9) has respectively two corresponding boss with threaded hole (15), there are respectively two radially corresponding boss at described one-level butterfly valve (8) and secondary butterfly valve (2) middle part, in one of them boss, it is square hole, in another boss, it is circular hole, Limit screw (10) is embedded in the circular hole of secondary butterfly valve (2) and one-level butterfly valve (8) through the boss with threaded hole (15) of straight tube choker-line (1) and tapering choker-line (9) respectively, and each Limit screw (10) is locked locking by two set nuts (3), regulation locking device is embedded in the square hole of secondary butterfly valve (2) and one-level butterfly valve (8) through the boss with threaded hole (15) of straight tube choker-line (1) and tapering choker-line (9) respectively, adjusts respectively as requested aperture the locking of secondary butterfly valve (2) and one-level butterfly valve (8).
2. single cylinder engine back pressure regulator device according to claim 1, it is characterized in that: described regulation locking device is two drive screws (5), the bottom of described drive screw (5) is the square cylinder corresponding with the square hole of secondary butterfly valve (2) and one-level butterfly valve (8), be embedded in the square hole of secondary butterfly valve (2) and one-level butterfly valve (8) through the boss with threaded hole (15) of straight tube choker-line (1) and tapering choker-line (9) respectively, each drive screw (5) is locked locking by two set nuts (3).
3. single cylinder engine back pressure regulator device according to claim 2, it is characterized in that: described regulation locking device also comprises valve location indicator stem (6), described valve location indicator stem (6) is arranged on drive screw (5), on described drive screw (5), there is an instruction tapped through hole (16) vertical with the faceted pebble of bottom square cylinder, valve location indicator stem (6) passes after the instruction tapped through hole (16) on drive screw 5, fixing by locking primary nut (4).
4. single cylinder engine back pressure regulator device according to claim 1, is characterized in that: the sealing gasket (7) that Leakage prevention is set at straight tube choker-line (1) and tapering choker-line (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182635.8A CN103969050A (en) | 2014-04-24 | 2014-04-24 | Backpressure regulating device of single-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182635.8A CN103969050A (en) | 2014-04-24 | 2014-04-24 | Backpressure regulating device of single-cylinder engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103969050A true CN103969050A (en) | 2014-08-06 |
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ID=51238821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410182635.8A Pending CN103969050A (en) | 2014-04-24 | 2014-04-24 | Backpressure regulating device of single-cylinder engine |
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| CN202927081U (en) * | 2012-11-26 | 2013-05-08 | 江南阀门有限公司 | Reheating dual-valve group for nuclear power station steam turbine |
| CN203239955U (en) * | 2013-05-09 | 2013-10-16 | 上海蓝帕控制阀门有限公司 | Butterfly valve double-valve-shaft structure |
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2014
- 2014-04-24 CN CN201410182635.8A patent/CN103969050A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3042895A1 (en) * | 1979-12-01 | 1982-05-19 | Leonhard Schleicher Südmo-Armaturenfabrik GmbH, 7081 Riesbürg | Butterfly-type stop valve - has two butterflies normally synchronised but changeable to allow independent operation |
| CN2748719Y (en) * | 2004-11-22 | 2005-12-28 | 江苏神通阀门有限公司 | Pressure regulating valve assembly |
| FR2905758B1 (en) * | 2006-09-11 | 2009-01-09 | Renault Sas | METHOD FOR CONTROLLING AN ENGINE EXHAUST BACKPACK ON A TESTING BENCH |
| CN101092909A (en) * | 2007-07-26 | 2007-12-26 | 河南省德信万通实业有限公司 | Exhaust brake valve with constant backpressure |
| DE102008022435A1 (en) * | 2008-05-07 | 2009-11-12 | Karl Dungs Gmbh & Co. Kg | Valve unit with two butterfly valves |
| CN201348565Y (en) * | 2008-12-30 | 2009-11-18 | 奇瑞汽车股份有限公司 | Exhaust back pressure adjusting device for testing engine pedestal |
| CN102087168A (en) * | 2009-12-08 | 2011-06-08 | 中国船舶重工集团公司第七一一研究所 | Exhaust back pressure wave adjustment device for supercharged diesel engine |
| KR20120001723U (en) * | 2010-07-28 | 2012-03-09 | 인하대학교 산학협력단 | Butterfly valve using two disc |
| CN102534075A (en) * | 2010-12-28 | 2012-07-04 | 鞍钢集团工程技术有限公司 | Blast-furnace gas pressure regulating process |
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| EP2489914A2 (en) * | 2011-02-18 | 2012-08-22 | CB-tec GmbH | Air feed wall bushing |
| EP2543845A1 (en) * | 2011-07-05 | 2013-01-09 | Ford Global Technologies, LLC | Method for determination of exhaust back pressure |
| CN202381175U (en) * | 2012-01-04 | 2012-08-15 | 安徽江淮汽车股份有限公司 | Auxiliary exhaust brake assembly |
| CN202789139U (en) * | 2012-09-18 | 2013-03-13 | 浙江亿日气动科技有限公司 | Pressure-limiting gas relief auxiliary brake valve device with concave surface piston sleeve |
| CN202927081U (en) * | 2012-11-26 | 2013-05-08 | 江南阀门有限公司 | Reheating dual-valve group for nuclear power station steam turbine |
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Application publication date: 20140806 |
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