CN102353416A - Synchronization pressure measurement-based cylinder cover volume detection device and method - Google Patents
Synchronization pressure measurement-based cylinder cover volume detection device and method Download PDFInfo
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- CN102353416A CN102353416A CN2011101529146A CN201110152914A CN102353416A CN 102353416 A CN102353416 A CN 102353416A CN 2011101529146 A CN2011101529146 A CN 2011101529146A CN 201110152914 A CN201110152914 A CN 201110152914A CN 102353416 A CN102353416 A CN 102353416A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 6
- 238000001514 detection method Methods 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000010304 firing Methods 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 description 4
- 239000002775 capsule Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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Abstract
本发明公开了一种基于同步压力测量的汽缸盖容积检测装置及方法，其特征是：气源单元是分别设置第一气缸和第二气缸，第一气缸活塞杆和第二气缸活塞杆为联动体，联动使得在第一气缸和第二气缸的有杆腔排出等量的气体；被测单元是以盖板与气缸盖形成封闭的燃烧室腔体，燃烧室腔体与第一气缸的有杆腔连通；基准单元是设置标准容积容器，标准容器与第二气缸的有杆腔连通；基准单元与被测单元处于同一环境状态中；在第一输气管道与第二输气管道上分别设置被测单元气压表和基准单元气压表。本发明同步对被测容积和标准容积充入等量气体，同时测量被测容积和标准容积内气体压力，根据气体状态方程计算得到被测容积，克服了充气法测量容积时介质温度对测量精度的影响。
The invention discloses a cylinder head volume detection device and method based on synchronous pressure measurement. body, the linkage makes the same amount of gas be discharged from the rod cavity of the first cylinder and the second cylinder; The rod cavity is connected; the reference unit is provided with a standard volume container, and the standard container communicates with the rod cavity of the second cylinder; the reference unit and the measured unit are in the same environmental state; the first gas pipeline and the second gas pipeline are respectively Set the barometer of the unit under test and the barometer of the reference unit. The invention simultaneously fills the measured volume and the standard volume with the same amount of gas, simultaneously measures the gas pressure in the measured volume and the standard volume, calculates the measured volume according to the gas state equation, and overcomes the influence of the medium temperature on the measurement accuracy when the gas filling method measures the volume Impact.
Description
Technical field
The present invention relates to cylinder cover device for measuring volume and method.
Background technology
At present, the general method that adopts of detection for the engine cylinder cover chamber volume has: titrimetry, aeration and elastic capsule topping up method etc.Titrimetry is measured poor accuracy, detection time is long, manually-operated is loaded down with trivial details; Directly aeration is simple to operate, but measuring accuracy is influenced by ambient temperature very big; Elastic capsule topping up method in use elastic capsule needs often to change, and operation is trouble comparatively.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point; Provide a kind of with the cylinder cover device for measuring volume and the method based on the simultaneous pressure measurement of gas as measuring media; Medium temperature improves measuring accuracy to the influence of measuring accuracy when measuring in the hope of overcoming aeration.
Technical solution problem of the present invention adopts following technical scheme:
The design feature that the present invention is based on the cylinder cover device for measuring volume of simultaneous pressure measurement is to comprise:
Gas source unit: first cylinder and second cylinder are set respectively; First cylinder piston rod and second cylinder piston rod are the interlock body, and the interlock of said first cylinder piston rod and second cylinder piston rod makes the gas of discharging equivalent at the rod chamber of first cylinder and second cylinder as source of the gas;
Unit under test: form the firing chamber cavity that seals to have the cover plate and the cylinder head that connect through hole, said firing chamber cavity is communicated with the rod chamber of first cylinder through first gas pipe line, forms unit under test;
Reference cell: the volume receptacle that sets up standard, said volumetric standard is communicated with the formation reference cell through second gas pipe line with the rod chamber of second cylinder; Said reference cell and unit under test are in the same ambient condition;
Display unit: unit under test rain glass and reference cell rain glass are set respectively on said first gas pipe line and second gas pipe line.
The characteristics of the method that the cylinder cover device for measuring volume that utilization of the present invention is measured based on simultaneous pressure detects are interlock first cylinder piston rod and second cylinder piston rod; Make win cylinder and second cylinder synchronously to unit under test and reference cell air feed; Obtain unit under test rain glass and the barometric demonstration atmospheric pressure value of reference cell, calculate the volume of firing chamber cavity again according to the equation of gas state.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The present invention is to be measuring media with gas; Synchronously tested volume and orthobaric volume are charged into equivalent gas; And measure the gaseous tension in tested volume and the orthobaric volume simultaneously; Calculate the method for tested volume according to the equation of gas state; Medium temperature is to the influence of measuring accuracy when measuring principle has overcome aeration and measures volume, and it is simple to operate, measuring accuracy is high.
Description of drawings
Fig. 1 is a principle of the invention synoptic diagram;
Label among the figure: 1 first cylinder; 2 second cylinders; 3 strap joints; 4 cover plates; 5 cover plate for sealing circles; 6 inlet valve plugs; 7 cylinder covers; 8 spark-plug hole plugs; 9 exhaust valve plugs; 10 firing chamber cavitys; 11 volumetric standards; 12 first gas pipe lines; 13 second gas pipe lines; 14 connect through hole; 15 unit under test rain glasss, 16 reference cell rain glasss.
Embodiment
Referring to Fig. 1, the cylinder cover device for measuring volume of measuring based on simultaneous pressure in the present embodiment comprises:
Gas source unit: first cylinder 1 and second cylinder 2 are set respectively; First cylinder piston rod and second cylinder piston rod are the interlock body, and the interlock of first cylinder piston rod and second cylinder piston rod makes gas in the rod chamber of first cylinder 1 and second cylinder 2 discharge equivalent as source of the gas; To be first cylinder be set to second cylinder that cylinder bore diameter equates in practical implementation, the equal diameters of first cylinder piston rod and second cylinder piston rod.
Unit under test: form the firing chamber cavity 10 that seals to have the cover plate 4 that connects through hole 14 with cylinder head 7, firing chamber cavity 10 is communicated with the rod chamber of first cylinder 1 through first gas pipe line 12, forms unit under test;
Reference cell: the volume receptacle 11 that sets up standard, volumetric standard 11 is communicated with the formation reference cell through second gas pipe line 13 with the rod chamber of second cylinder 2; Reference cell and unit under test are in the same ambient condition;
Display unit: unit under test rain glass 15 and reference cell rain glass 16 are set respectively on first gas pipe line 12 and second gas pipe line 13.
During MEASUREMENT OF STEAM cylinder cap volume; At first respectively cylinder cover inlet valve port, exhaust doorway and spark-plug hole are blocked with inlet valve plug 6, exhaust valve plug 9 and spark-plug hole plug 8; Again cover plate 4 is covered the mouth door of cylinder cover 7 and compress; Seal with O-ring seal 5 between cover plate 4 and the cylinder cover 7, form firing chamber cavity 10 at this moment between the combustor surface of cover plate 4 and cylinder cover 7; The rod chamber of first cylinder 1 is connected with firing chamber cavity 10 through the connection through hole 14 on first gas pipe line 12, strap joint 3 and the cover plate 4; The rod chamber of second cylinder 2 is connected with volumetric standard 11 through second gas pipe line 13; Unit under test rain glass 15 is arranged in first gas pipe line 12, is used for measuring the pressure of first gas pipe line 12; Reference cell rain glass 16 is arranged in second gas pipe line 13, is used for measuring the pressure of second gas pipe line 13;
Accurately the set up standard volume of container 11, make volumetric standard 11 volume and be attached thereto the volume sum that the volume sum of the second logical gas pipe line 13 equals the theoretical displacement of firing chamber cavity 10 and is attached thereto the first logical gas pipe line 12;
Drive the piston rod of first cylinder 1 and second cylinder 2; Make win cylinder 1 and second cylinder 2 respectively to firing chamber cavity 10 and volumetric standard 11 synchronous air feed; Firing chamber cavity 10 raises with volumetric standard 11 interior gaseous tensions; Piston rod until cylinder 1 and cylinder 2 arrives desired location; According to this moment unit under test rain glass 15 measure the gas pressure value of unit under test and reference cell with reference cell rain glass 16, calculate the volume of firing chamber cavity 10 by the equation of gas state.Because firing chamber cavity 10 is in the same atmospheric environment with gaseous tensions in the volumetric standard 11 all the time,, thereby can not influence measuring accuracy so the environmental gas temperature variation is synchronous to the influence of the gas pressure value of unit under test and reference cell.
In the practical implementation; The rod chamber volume that first cylinder 1 and second cylinder 2 can be set equals firing chamber cavity 10 and first gas pipe line, 12 volume sums five times, and first cylinder 1 and the initial position of second cylinder 2 before measurement are the maximum positions of rod chamber volume.The volume of container 11 of setting up standard equals the theoretical value of firing chamber cavity 10 volumes, and first gas pipe line 12 is the identical and equal in length of specification with second gas pipe line 13; Driving the piston rod of first cylinder 1 and second cylinder 2, is zero until the rod chamber volume; If the volume of firing chamber cavity 10 is V
1, the volume of first gas pipe line 12 and second gas pipe line 13 is given value V
2, the volume of volumetric standard 11 is V
0, the reading of unit under test rain glass 15 is P
1, the reading of reference cell rain glass 16 is P
2, according to equation of gas state P
1(V
1+ V
0)=P
2(V
2+ V
0) draw:
Claims (2)
1. cylinder cover device for measuring volume of measuring based on simultaneous pressure is characterized in that comprising:
Gas source unit: first cylinder (1) and second cylinder (2) are set respectively; First cylinder piston rod and second cylinder piston rod are the interlock body, and the interlock of said first cylinder piston rod and second cylinder piston rod makes gas in the rod chamber of first cylinder (1) and second cylinder (2) discharge equivalent as source of the gas;
Unit under test: form the firing chamber cavity (10) that seals to have the cover plate (4) that connects through hole with cylinder head (7), said firing chamber cavity (10) is communicated with the rod chamber of first cylinder (1) through first gas pipe line (12), forms unit under test;
Reference cell: the volume receptacle that sets up standard (11), said volumetric standard (11) is communicated with the formation reference cell through second gas pipe line (13) with the rod chamber of second cylinder (2); Said reference cell and unit under test are in the same ambient condition;
Display unit: on said first gas pipe line (12) and second gas pipe line (13), unit under test rain glass (15) and reference cell rain glass (16) are set respectively.
2. one kind is utilized the described method that detects based on the cylinder cover device for measuring volume of simultaneous pressure measurement of claim 1; First cylinder piston rod and second cylinder piston rod is characterized in that linking; Make cylinder of winning (1) and second cylinder (2) synchronously to unit under test and reference cell air feed; Obtain the demonstration atmospheric pressure value of unit under test rain glass (15) and reference cell rain glass (16), calculate the volume of firing chamber cavity (10) again according to the equation of gas state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101529146A CN102353416B (en) | 2011-06-08 | 2011-06-08 | Cylinder head volume detection device and method based on synchronous pressure measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101529146A CN102353416B (en) | 2011-06-08 | 2011-06-08 | Cylinder head volume detection device and method based on synchronous pressure measurement |
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| Publication Number | Publication Date |
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| CN102353416A true CN102353416A (en) | 2012-02-15 |
| CN102353416B CN102353416B (en) | 2012-11-21 |
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| CN2011101529146A Expired - Fee Related CN102353416B (en) | 2011-06-08 | 2011-06-08 | Cylinder head volume detection device and method based on synchronous pressure measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896067A (en) * | 2020-08-05 | 2020-11-06 | 中车青岛四方车辆研究所有限公司 | Air cylinder, volume measurement system and volume measurement method |
| CN113310699A (en) * | 2021-07-08 | 2021-08-27 | 上腾科技(广州)有限公司 | Engine cylinder parameter measuring method, measuring system and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101336A1 (en) * | 2001-06-08 | 2002-12-19 | Lars Stenmark | Advanced volume gauging device |
| CN101000259A (en) * | 2006-12-31 | 2007-07-18 | 合肥工业大学 | Device for measuring volume of engine cylinder head combustion chamber |
| CN101458107A (en) * | 2008-10-17 | 2009-06-17 | 奇瑞汽车股份有限公司 | Device for measuring engine cylinder cover chamber volume and measurement method thereof |
| CN202119499U (en) * | 2011-06-08 | 2012-01-18 | 合肥工业大学 | Cylinder cover volume detecting device based on synchronous pressure measurement |
-
2011
- 2011-06-08 CN CN2011101529146A patent/CN102353416B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101336A1 (en) * | 2001-06-08 | 2002-12-19 | Lars Stenmark | Advanced volume gauging device |
| CN101000259A (en) * | 2006-12-31 | 2007-07-18 | 合肥工业大学 | Device for measuring volume of engine cylinder head combustion chamber |
| CN101458107A (en) * | 2008-10-17 | 2009-06-17 | 奇瑞汽车股份有限公司 | Device for measuring engine cylinder cover chamber volume and measurement method thereof |
| CN202119499U (en) * | 2011-06-08 | 2012-01-18 | 合肥工业大学 | Cylinder cover volume detecting device based on synchronous pressure measurement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896067A (en) * | 2020-08-05 | 2020-11-06 | 中车青岛四方车辆研究所有限公司 | Air cylinder, volume measurement system and volume measurement method |
| CN113310699A (en) * | 2021-07-08 | 2021-08-27 | 上腾科技(广州)有限公司 | Engine cylinder parameter measuring method, measuring system and storage medium |
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| Publication number | Publication date |
|---|---|
| CN102353416B (en) | 2012-11-21 |
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