CN206420511U - Mass air flow sensor - Google Patents
Mass air flow sensor Download PDFInfo
- Publication number
- CN206420511U CN206420511U CN201621373650.1U CN201621373650U CN206420511U CN 206420511 U CN206420511 U CN 206420511U CN 201621373650 U CN201621373650 U CN 201621373650U CN 206420511 U CN206420511 U CN 206420511U
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- China
- Prior art keywords
- air
- outflow port
- air flow
- probe
- flow
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Abstract
The utility model is related to a kind of mass air flow sensor.Mass air flow sensor, including housing；Air inflow aperture and air outflow port are offered on the side wall of the housing, air inflow aperture is in below air outflow port, and enclosure interior is communicated with the air flow channel of air inflow aperture and air outflow port；Flow probe and temp probe are provided with inside the air flow channel, flow probe is in temp probe downstream；Closing in is convexed into air flow channel madial wall in the air outflow port, flow probe is in the closing in；Air outflow port includes the first air outflow port and the second air outflow port, and the first air outflow port and the second air outflow port are respectively on the front and rear two housings of the downstream end of air flow channel.The mass air flow sensor is higher to the measurement accuracy of air mass flow, it is ensured that the accuracy that engine amount of fuel is calculated.
Description
Technical field
The utility model is related to a kind of mass air flow sensor.
Background technology
Car engine needs appropriate fuel oil with after air mixed combustion blast, can just produce power.General vehicle engine
Gas handling system be to enter by after air filtering purifying, then after flowing through mass air flow sensor, choke valve etc. through air inlet pipe by air cleaner
Engine, and flow to by mass air flow sensor measurement the air inflow of engine, can provide car running computer and calculate output and give engine combustion
The foundation of oil mass.Conventional air flowmeter includes housing, and enclosure interior is provided with air flow channel, and air flow channel is internally provided with stream
Amount probe, this kind of flow probe is mainly used in measuring the gas volume flowed through, but the stream in existing mass air flow sensor
When amount probe is measured to the gas volume flowed through, its measurement accuracy is not accurate enough.
The content of the invention
In order to solve the above problems, the purpose of this utility model is to provide a kind of mass air flow sensor, the mass air flow sensor
Measurement accuracy to air mass flow is higher, it is ensured that the accuracy that engine amount of fuel is calculated.
In order to realize above-mentioned purpose, the utility model employs following technical scheme：
Mass air flow sensor, including housing；Air inflow aperture and air outflow port, air are offered on the side wall of the housing
Inflow entrance is in below air outflow port, and enclosure interior is communicated with the air flow channel of air inflow aperture and air outflow port；Institute
State and flow probe and temp probe are provided with inside air flow channel, flow probe is in temp probe downstream；The air outflow port
Closing in is convexed into interior air flow channel madial wall, flow probe is in the closing in；Air outflow port includes the first air stream
Outlet and the second air outflow port, the first air outflow port and the second air outflow port are respectively at the downstream end of air flow channel
Front and rear two housings on.It should be noted that the setting of the upstream and downstream, be not it is simple from spatially being set,
But set according to the direction of air flow.
Preferably, two piece deflectors of the downstream end of the air flow channel provided with guiding air flow；Two pieces are led
Stream plate guides the air outflow port of air flow first and the second air outflow port respectively.
As preferential, the air flow channel takes the shape of the letter U shape, and flow probe and temp probe are in the same effluent of air flow channel
In road.
Preferably, the case inside is provided with multiple hangers, flow probe and temp probe are respectively arranged in different extensions
On frame.
The utility model uses above-mentioned technical proposal, and the technical scheme is related to a kind of mass air flow sensor, the mass air flow sensor
Air flow channel madial wall in convex into closing in, flow probe is in the closing in；Gas will be flowed through by closing up in runner
Body is assembled as much as possible, and the flow probe is arranged in closing in, can be easy to concentrate measurement above-mentioned gas flow, the degree of accuracy is more
It is high.In addition, the downstream end of above-mentioned mass air flow sensor is provided with the first air outflow port and the second air outflow port, be conducive to carrying
High gas flow rate, and ensure that air flow channel end gas flows, it is uniform, not chaotic.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic cross-section of air flow channel.
Embodiment
Below in conjunction with the accompanying drawings, preferred embodiment of the present utility model is described in further detail.
Mass air flow sensor as shown in Figure 1-2, including housing 1.Air inflow aperture 21 is offered on the side wall of the housing 1
And air outflow port, air inflow aperture 21 is in below air outflow port, is communicated with air inflow aperture 21 and sky inside housing 1
The air flow channel 2 of air stream outlet, air flow channel 2 takes the shape of the letter U shape.
The inside of air flow channel 2 is provided with flow probe 31 and temp probe 32, and flow probe 31 is in temp probe 32
In downstream, and the same side runner of flow probe 31 and temp probe 32 in air flow channel 2, case inside is hung provided with multiple
Frame 33, flow probe and temp probe are respectively arranged on different hangers 33.The inner side of air flow channel 2 in the air outflow port
Closing in 24 is convexed into wall, flow probe 31 is in the closing in 24.Air outflow port includes the first air outflow port 22 and the
Two air outflow ports 23, the first air outflow port 22 and the second air outflow port 23 are respectively at the downstream end of air flow channel 2
Front and rear two housings 1 on；Two piece deflectors 25 of the downstream end of the air flow channel 2 provided with guiding air flow；Two pieces
Deflector 25 guides air flow the first air outflow port 22 and the second air outflow port 23 respectively.The technical scheme is related to one kind
Closing in 24 is convexed into mass air flow sensor, the madial wall of the air flow channel 2 of the mass air flow sensor, flow probe 31 is in the closing in
In 24；The gas coming through in runner is assembled as much as possible by closing in 24, and the flow probe 31 is arranged in closing in 24,
It can be easy to concentrate measurement above-mentioned gas flow, the degree of accuracy is higher.In addition, the downstream end of above-mentioned mass air flow sensor is provided with first
The air outflow port 23 of air outflow port 22 and second, is conducive to improving gas flow rate, and ensure that the end gas of air flow channel 2
Flowing, it is uniform, not chaotic.It is not simple from spatially being set it should be noted that the setting of the upstream and downstream
It is fixed, but set according to the direction of air flow.
Above-mentioned mass air flow sensor is used to measure air mass flow, and its use principle is that air draught passes through air flow channel 2, temperature
Degree probe 32 first detects the temperature of air-flow, is used as the foundation of signal compensation；Air draught steady ordered passes through flow probe
31, the air-flow high low signal detected is transmitted to circuit by flow probe 31；The air-flow for flowing through flow probe 31 is final by air stream
The air outflow port outflow of the downstream end of road 2.The air temperature signals that are gathered of said temperature probe 32, can as compensation according to
According to when engine amount of fuel is calculated, according to compensation basis progress adequate compensation, so that it is accurate to ensure that engine amount of fuel is calculated
Property.
Claims (2)
1. mass air flow sensor, it is characterised in that：Including housing；Air inflow aperture and air stream are offered on the side wall of the housing
Outlet, air inflow aperture is in below air outflow port, and enclosure interior is communicated with the sky of air inflow aperture and air outflow port
Flow channel；Flow probe and temp probe are provided with inside the air flow channel, flow probe is in temp probe downstream；The sky
Closing in is convexed into air flow channel madial wall in air stream outlet, flow probe is in the closing in；Air outflow port includes the
One air outflow port and the second air outflow port, the first air outflow port and the second air outflow port are respectively at air flow channel
On the front and rear two housings of downstream end；Two piece deflectors of the downstream end of the air flow channel provided with guiding air flow；
Two pieces of deflectors guide the air outflow port of air flow first and the second air outflow port respectively；The air flow channel takes the shape of the letter U shape,
Flow probe and temp probe are in the same side runner of air flow channel.
2. mass air flow sensor according to claim 1, it is characterised in that：The case inside is provided with multiple hangers, flow
Probe and temp probe are respectively arranged on different hangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373650.1U CN206420511U (en) | 2016-12-14 | 2016-12-14 | Mass air flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373650.1U CN206420511U (en) | 2016-12-14 | 2016-12-14 | Mass air flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206420511U true CN206420511U (en) | 2017-08-18 |
Family
ID=59576485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621373650.1U Active CN206420511U (en) | 2016-12-14 | 2016-12-14 | Mass air flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206420511U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796452A (en) * | 2017-11-16 | 2018-03-13 | 矽翔微机电系统（上海）有限公司 | Gas flowmeter |
| CN110407340A (en) * | 2019-08-21 | 2019-11-05 | 南华大学 | A kind of method and device that overpass rainwater is detained and handles |
| CN112857499A (en) * | 2021-04-06 | 2021-05-28 | 浙江双良汽车零部件有限公司 | Air flow meter |
-
2016
- 2016-12-14 CN CN201621373650.1U patent/CN206420511U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796452A (en) * | 2017-11-16 | 2018-03-13 | 矽翔微机电系统（上海）有限公司 | Gas flowmeter |
| CN110407340A (en) * | 2019-08-21 | 2019-11-05 | 南华大学 | A kind of method and device that overpass rainwater is detained and handles |
| CN110407340B (en) * | 2019-08-21 | 2024-01-30 | 南华大学 | Viaduct rainwater detention and treatment method and device |
| CN112857499A (en) * | 2021-04-06 | 2021-05-28 | 浙江双良汽车零部件有限公司 | Air flow meter |
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| GR01 | Patent grant |