CN201203445Y - Engine air inlet heat type gas mass flowmeter - Google Patents
Engine air inlet heat type gas mass flowmeter Download PDFInfo
- Publication number
- CN201203445Y CN201203445Y CNU2008200605108U CN200820060510U CN201203445Y CN 201203445 Y CN201203445 Y CN 201203445Y CN U2008200605108 U CNU2008200605108 U CN U2008200605108U CN 200820060510 U CN200820060510 U CN 200820060510U CN 201203445 Y CN201203445 Y CN 201203445Y
- Authority
- CN
- China
- Prior art keywords
- type gas
- engine charge
- thermal type
- gas quality
- flow meter
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a hot gas mass flow for an engine air input comprising a gas flow sensor. The gas flow sensor and a rectifier on the air input terminal are arranged in a middle connection pipe; a former connection pipe is arranged at the former terminal of the middle connection pipe, a rear connection pipe is arranged at the rear terminal. The hot gas mass flow solves the problems that the engine air input is discontinuous, a pressure fluctuation exists in the air input, the resistance of the measurement sensor is large and needs to correct through pressure and temperature.
Description
Technical field
The utility model relates to a kind of engine charge thermal type gas quality flow meter.
Background technology
At present, during engine intake airflow was measured, major part was a volumetric displacement meter in the known gas meter, and the measuring technique of volumetric displacement meter is to infer volumetric flow rate by the mean flow rate differential pressure of measuring and calculating medium.Volumetric displacement meter is if obtain mass rate and just must change by the density of gas, and density is to obtain by measuring temperature and pressure.Indirect mass measurement makes final result rely on more amount, has reduced measuring accuracy.In addition, there are defectives such as range is little, resistance is big in existing volumetric displacement meter, and range of application is narrow; And the measuring accuracy of volumetric displacement meter is represented with full scale, so the big heavy discount of actual flow measuring accuracy.Because engine charge is discontinuous, so exist pressure fluctuation in the air inlet, the resistance of survey sensor is big, and thermal flowmeter adopts plug-in type or duct type to install, and air-flow is not filtered or rectification, has reduced measuring accuracy.
Summary of the invention
Technical problem to be solved in the utility model is: at problems of the prior art, propose a kind of engine charge thermal type gas quality flow meter that can directly measure the engine charge mass rate.
The utility model is achieved in that
A kind of engine charge thermal type gas quality flow meter comprises gas flow sensor, and the rectifier of described gas flow sensor and its inlet end setting is arranged in adapter; The front end of taking in described is provided with preceding adapter, and the rear end is provided with rear tube.
Take over before described and link to each other with filtrator by reducer pipe.
The afterbody of described rear tube is provided with leather pipe joint.
Taking over before described is ten times of calibers.
Described rear tube is five times of calibers.
The runner of described rectifier is cellular.
The beneficial effects of the utility model:
According to the technical solution of the utility model, owing to the inlet end that has adopted gas flow sensor in middle adapter is provided with rectifier and adopts the preceding adapter of ten times of calibers and the rear tube of five times of calibers in the front and back end of middle adapter, engine charge by filtrator and reducer pipe after, by preceding adapter gas is fully developed again, make gas velocity cross section symmetry; Rectifier in taking over during air-flow further flows into makes fully symmetry of air-flow; Just can measure gas mass flow through the gas of rectifier after by gas flow sensor.Therefore the pressure loss is little, can not reduce air input of engine by air, influences engine capacity, has improved measuring accuracy and measuring repeatability; And install and use easy.The measurement range that the utlity model has broad is greater than 50:1, the flowmeter of one playscript with stage directions utility model can be measured the low-powered engine mass rate, also can measure the high-power engine air-mass flow, promptly can measure idling operation to an engine and also can measure the air-mass flow of high operating mode, and do not reduce measuring accuracy, and represent measuring accuracy with reading value, precision is better than 1% reading value.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the cross section structure synoptic diagram of rectifier among Fig. 1.
Embodiment
Referring to accompanying drawing 1, a kind of engine charge thermal type gas quality flow meter of the utility model comprises filtrator 5, reducer pipe 6, preceding adapter 2, middle adapter 1, rear tube 4 and leather pipe joint 7, adopts clamp connection between each part.The gas flow sensor inlet end is provided with rectifier 3, and runner 8 is a regular hexagon in the rectifier 3, and runner is full of the rectifier xsect, as shown in Figure 2.
Claims (6)
1, a kind of engine charge thermal type gas quality flow meter comprises gas flow sensor, it is characterized in that: the rectifier of described gas flow sensor and its inlet end setting is arranged in adapter; The front end of taking in described is provided with preceding adapter, and the rear end is provided with rear tube.
2, engine charge thermal type gas quality flow meter according to claim 1 is characterized in that: adapter links to each other with filtrator by reducer pipe before described.
3, engine charge thermal type gas quality flow meter according to claim 1, it is characterized in that: the afterbody of described rear tube is provided with leather pipe joint.
4, engine charge thermal type gas quality flow meter according to claim 1 and 2 is characterized in that: taking over before described is ten times of calibers.
5, according to claim 1 or 3 described engine charge thermal type gas quality flow meters, it is characterized in that: described rear tube is five times of calibers.
6, engine charge thermal type gas quality flow meter according to claim 1 is characterized in that: the runner of described rectifier is cellular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605108U CN201203445Y (en) | 2008-04-15 | 2008-04-15 | Engine air inlet heat type gas mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605108U CN201203445Y (en) | 2008-04-15 | 2008-04-15 | Engine air inlet heat type gas mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203445Y true CN201203445Y (en) | 2009-03-04 |
Family
ID=40425758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200605108U Expired - Lifetime CN201203445Y (en) | 2008-04-15 | 2008-04-15 | Engine air inlet heat type gas mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201203445Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075768A (en) * | 2014-07-07 | 2014-10-01 | 广西玉柴机器股份有限公司 | Installation tube for air flow meter of engine |
| CN106052789A (en) * | 2016-06-30 | 2016-10-26 | 广西玉柴机器股份有限公司 | Diameter changing device for vehicle-mounted exhaust flowmeter |
| CN108223163A (en) * | 2016-12-22 | 2018-06-29 | 罗伯特·博世有限公司 | For the method and apparatus of correction-air masss flow sensor |
-
2008
- 2008-04-15 CN CNU2008200605108U patent/CN201203445Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075768A (en) * | 2014-07-07 | 2014-10-01 | 广西玉柴机器股份有限公司 | Installation tube for air flow meter of engine |
| CN106052789A (en) * | 2016-06-30 | 2016-10-26 | 广西玉柴机器股份有限公司 | Diameter changing device for vehicle-mounted exhaust flowmeter |
| CN108223163A (en) * | 2016-12-22 | 2018-06-29 | 罗伯特·博世有限公司 | For the method and apparatus of correction-air masss flow sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI TOCEIL ENGINE TESTING TECH.CO.LTD . Free format text: FORMER OWNER: HANGHAI TONGYUAN ENVIRONMENT TECHNOLOGY CO., LTD. Effective date: 20090424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090424 Address after: Shanghai city Yangpu District Songhu Road No. 98 room 1103, zip code: 200433 Patentee after: Shanghai with a Round Engine Test Engineering Technology Co., Ltd. Address before: Shanghai city Yangpu District Songhu Road No. 98 room 1103, zip code: 200433 Patentee before: Shanghai Tongyuan Environment Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI TOCEIL ENGINE TESTING EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI TONGYUAN ENGINES TEST ENGINEERING CO., LTD. Effective date: 20120716 Owner name: SHANGHAI TONGYUAN ENGINES TEST ENGINEERING CO., LT Effective date: 20120716 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200433 YANGPU, SHANGHAI TO: 200438 YANGPU, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120716 Address after: 200438 No. 518, Yue Yue Road, Yangpu District, Shanghai Co-patentee after: Shanghai with a Round Engine Test Engineering Technology Co., Ltd. Patentee after: Shanghai Toceil Engine Testing Equipment Co., Ltd. Address before: 200433 Shanghai city Yangpu District Songhu Road No. 98 room 1103 Patentee before: Shanghai with a Round Engine Test Engineering Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |