CN101178334A - Vehicle fuel tank cap leakage flow rate testing methods - Google Patents
Vehicle fuel tank cap leakage flow rate testing methods Download PDFInfo
- Publication number
- CN101178334A CN101178334A CNA2006101181391A CN200610118139A CN101178334A CN 101178334 A CN101178334 A CN 101178334A CN A2006101181391 A CNA2006101181391 A CN A2006101181391A CN 200610118139 A CN200610118139 A CN 200610118139A CN 101178334 A CN101178334 A CN 101178334A
- Authority
- CN
- China
- Prior art keywords
- disk
- negative pressure
- fuel tank
- oil tank
- tank cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
An automobile oil tank cover leakage flux detecting method relates to a method to detect the tightening torque, negative pressure, positive pressure and micro-leaking performance index of the automobile oil tank cover. The invention is to arrange the oil tank cover on a rotary disk and the surface of the oil tank cover is provided with 6 same pedestals. The pedestals pass through the disk and can be connected with a connecting sleeve at the head part of a closed air cylinder. The rotating switch check station of the disk is used for stopping the state for detecting the tightening torque, negative pressure, positive pressure and micro-leaking index in sequence. The disk rotates by 60 degrees through an air cylinder and a thorn wheel mechanism. The air cylinder returns when the disk is static. The invention leads the detecting of the oil tank cover to reach the requirements of full automation and standardization.
Description
Affiliated technical field
The present invention relates to detect the method for vehicle fuel tank cap leakage, refer to the method for screw-down torque, negative pressure, malleation and the tiny leakage performance index of detection vehicle fuel tank cap especially.
Background technology
The detection of vehicle fuel tank cap in the past is semi-automatic substantially, and the product testing result can not reach standard, and along with the continuous development of auto industry, the production of auto parts is standardization all in recent years, and the production of fuel tank cap and detection also must the conformance with standard requirements for this reason.
Summary of the invention
The present invention is placed on fuel tank cap on the rotating circular disk, be provided with 6 identical pedestals above, pedestal passes disk and can be connected with the adapter sleeve of closed cylinder head, rotation change detection station by disk, halted state detects, and detects screw-down torque, negative pressure, malleation, tiny leakage index successively; Disk is by 60 ° of cylinder, ratchet mechanism rotations, and cylinder is return when disk is static.
System of the present invention is by the control of the fabulous PLC of reliability, and all action all has various feedback signal controls, and each sensor is notified PLC testing result, and PLC is sent to computing machine with Various types of data and shows, handles.The detection of fuel tank cap is reached automatically, the standardization requirement
Description of drawings
Fig. 1 is the vehicle fuel tank cap leakage flow rate testing methods process chart.
Embodiment
1. detection screw-down torque
The screw-down torque pick-up unit is installed in the top of station, sends signal after disk is rotated in place.Craspedodrome cylinder in the screw-down torque pick-up unit is slowly descending, as then slight rotation not in place chuck is definitely put in place.Rotating mechanism can be carried out by rotary cylinder, and the control rotary cylinder is to be undertaken by the pressurized air proportional servo valve, when the control of compressed-air actuated pressure with proportional servo valve improves gradually, and the also corresponding raising of the output torque of rotary cylinder.Detecting moment of torsion is made up of torque sensor and 2 instrument.When moment of torsion is outside 1.3-2.3NM, report to the police.After having detected moment of torsion, Blowdown Sealing Face is cleared up with pressurized air.
2. detection negative pressure:
System is equipped with negative pressure generator, negative pressure proportional servo valve, negative pressure transducer, pressure display instrument table and forms and control and regulate negative pressure by the Automatic Program of setting; Negative pressure digital flow sensor, flow monitor instrument etc.Negative pressure generator produces negative pressure, and negative pressure proportional servo valve and negative pressure transducer are formed the controllable negative pressure loop and determined that system detects needed negative pressure point.After negative pressure point was determined, negative pressure digital flow sensor, flow monitor instrument carried out the detection of negative pressure flow.
This station detects 3 indexs:
A. work as system and adjust to negative pressure at P=-0.003bar, when negative pressure was leaked generation, the also corresponding generation negative pressure in the top that fuel tank cap is airtight was when sensor is judged its qualification after this negative pressure.
B. when system adjust to negative pressure-0.003bar＞P＞-0.013bar between, when the retaining valve of fuel tank cap was opened, flow sensor detected air flow and just sends qualified signal.
C. when system adjust to negative pressure P＜-during 0.013bar, flow sensor detects air flow and just sends qualified signal greater than 1L/min.
3. detection malleation:
System is equipped with malleation proportional servo valve, positive pressure sensor, pressure display instrument table and forms and control and regulate positive pressure by the Automatic Program of setting and press; Malleation digital flow sensor, flow displaying instrument come the flow of detection system.Arrive setting with the accurate pressure regulation of pressurized air that system provides.Form controlled positive hydraulic circuit with proportional servo valve and malleation sensor then and determine that system detects needed positive pressure point.After positive pressure point was determined, malleation digital flow sensor, flow monitor instrument carried out the detection of malleation flow.
This station detects 2 indexs:
A. when system's malleation 0.15bar＜P＜-when beginning to exit during 0.25bar, flow sensor detects air flow and just sends qualified signal.
B. when the P of system＞0.25bar flow, flow sensor detects air flow and just sends qualified signal greater than 10L/min.
4. Leak Detection station:
This station is equipped with leakage detector, and the leak locator major function has:
4.1 leakage detector is made up of the differential pressure pick-up of precision and one group of accurate valve member and digital control circuit.
4.2 test specification 0-2cm
3/ min can be provided with different alarming values.
Be divided into inflationtime 4.3 detect step, equilibration time and detection time, can be set each time according to each requirement of workpiece.
Be arranged on 0.13bar 4.4 detect leakage air pressure, can detect according to each company's fuel tank cap index decision and leak.
5. the processing of part qualification:
Equipment is equipped with 1 and advances 2 passages that go out, in the middle of have a panel turnover mechanism automatically to select qualified and rejected part passage.Tick on the defective station in the end of part, and at the load/unload stations sound and light alarm, by descending the step to detect behind the operation acknowledgement.
6. physical construction:
Station is divided into and is 1. manual loading and unloading seized part station; 2. survey the moment of torsion station; 3. negative pressure is leaked and negative pressure flow detection station; 4. malleation and malleation flow detection station; 5. Leak Detection station; 6. rejected part marking station.
Claims (1)
1. vehicle fuel tank cap leakage flow rate testing methods, it is characterized in that fuel tank cap is placed on the rotating circular disk, be provided with 6 identical pedestals above, pedestal passes disk and can be connected with the adapter sleeve of closed cylinder head, rotation change detection station by disk, halted state detects, and detects screw-down torque, negative pressure, malleation, tiny leakage index successively; Disk is by 60 ° of cylinder, ratchet mechanism rotations, and cylinder is return when disk is static.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101181391A CN101178334A (en) | 2006-11-09 | 2006-11-09 | Vehicle fuel tank cap leakage flow rate testing methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101181391A CN101178334A (en) | 2006-11-09 | 2006-11-09 | Vehicle fuel tank cap leakage flow rate testing methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101178334A true CN101178334A (en) | 2008-05-14 |
Family
ID=39404674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101181391A Pending CN101178334A (en) | 2006-11-09 | 2006-11-09 | Vehicle fuel tank cap leakage flow rate testing methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101178334A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975647A (en) * | 2010-11-04 | 2011-02-16 | 上海贝洱热系统有限公司 | Radiator leakage comprehensive test bed and method |
| CN102183346A (en) * | 2010-07-15 | 2011-09-14 | 上海霍富汽车锁具有限公司 | Method for detecting leakage flow of automobile oil tank cover |
| CN102410907A (en) * | 2011-10-25 | 2012-04-11 | 天津大学内燃机研究所 | General fuel tank cap used in motor vehicle fuel tank pressure test |
| CN103792073A (en) * | 2012-10-30 | 2014-05-14 | 南京汽车集团有限公司 | System and method for testing positive and negative opening pressure of fuel tank cap lock |
| CN105115678A (en) * | 2015-07-01 | 2015-12-02 | 天津博益气动股份有限公司 | Double-mode leak detector and detection method |
| CN110617926A (en) * | 2019-10-17 | 2019-12-27 | 济南正诚汽车科技有限公司 | Fuel tank cover sealing performance detection device |
-
2006
- 2006-11-09 CN CNA2006101181391A patent/CN101178334A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183346A (en) * | 2010-07-15 | 2011-09-14 | 上海霍富汽车锁具有限公司 | Method for detecting leakage flow of automobile oil tank cover |
| CN102183346B (en) * | 2010-07-15 | 2015-06-03 | 上海霍富汽车锁具有限公司 | Method for detecting leakage flow of automobile oil tank cover |
| CN101975647A (en) * | 2010-11-04 | 2011-02-16 | 上海贝洱热系统有限公司 | Radiator leakage comprehensive test bed and method |
| CN101975647B (en) * | 2010-11-04 | 2012-07-04 | 上海贝洱热系统有限公司 | Radiator leakage comprehensive test bed and method |
| CN102410907A (en) * | 2011-10-25 | 2012-04-11 | 天津大学内燃机研究所 | General fuel tank cap used in motor vehicle fuel tank pressure test |
| CN103792073A (en) * | 2012-10-30 | 2014-05-14 | 南京汽车集团有限公司 | System and method for testing positive and negative opening pressure of fuel tank cap lock |
| CN103792073B (en) * | 2012-10-30 | 2016-09-07 | 南京汽车集团有限公司 | Fuel tank cap lock positive and negative unlatching pressure testing system and method for testing |
| CN105115678A (en) * | 2015-07-01 | 2015-12-02 | 天津博益气动股份有限公司 | Double-mode leak detector and detection method |
| CN110617926A (en) * | 2019-10-17 | 2019-12-27 | 济南正诚汽车科技有限公司 | Fuel tank cover sealing performance detection device |
| CN110617926B (en) * | 2019-10-17 | 2021-06-01 | 济南正诚汽车科技有限公司 | Fuel tank cover sealing performance detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101178334A (en) | Vehicle fuel tank cap leakage flow rate testing methods | |
| CN201799848U (en) | Assembly and detection line for automobile oil pumps | |
| CN101598622A (en) | Wheel hub balance-jitter detection line | |
| CN102183346B (en) | Method for detecting leakage flow of automobile oil tank cover | |
| CN106840080B (en) | 3, space plane calibration manipulator and resetting are from checking method and calibration method | |
| CN105583164A (en) | Vacuum online leakage detecting machine for medicine bottles and vacuum leakage detecting system applied to leakage detecting machine | |
| CN203490035U (en) | A vacuum actuator online detecting apparatus | |
| CN107695792A (en) | A kind of control method of intelligent fixture | |
| CN103084899A (en) | Motor stator lathing clamp | |
| KR102028305B1 (en) | leak test and tap screw hole checking apparatus | |
| CN202002811U (en) | Reliability test-bed for rotary table of horizontal machining center | |
| CN103389193A (en) | Detecting system and method of leakage of gas cylinder | |
| CN106425453A (en) | Device and method for automatically eliminating bearing assembling clearance | |
| CN203197638U (en) | Motor stator turning machining clamp | |
| CN112008494A (en) | Test experiment platform and method for chip sticking detection chuck of electric spindle of numerical control machine tool | |
| CN217193789U (en) | Rotating disc type workpiece detection device | |
| CN108204796A (en) | A kind of multi-point thickness automatic tester | |
| CN108918135A (en) | A kind of numerical control rotating platform reliability test verifying bench and test verification method | |
| CN105436245B (en) | A kind of NC turret punch machine | |
| CN205940515U (en) | Automatic nut detection device of automobile parts | |
| CN206756348U (en) | Recliner central part moment of torsion testing agency | |
| CN208705028U (en) | A kind of numerical control rotating platform reliability test verifying bench | |
| CN211262461U (en) | Weighing sensor performance testing device | |
| CN104833459B (en) | A kind of automobile pipe fitting impermeability leakage detection apparatus and leak hunting method thereof | |
| CN109211490B (en) | Air tightness detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080514 |