CN102735396A - Sensor for air inlet pressure of automobile engine - Google Patents
Sensor for air inlet pressure of automobile engine Download PDFInfo
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- CN102735396A CN102735396A CN2012102480220A CN201210248022A CN102735396A CN 102735396 A CN102735396 A CN 102735396A CN 2012102480220 A CN2012102480220 A CN 2012102480220A CN 201210248022 A CN201210248022 A CN 201210248022A CN 102735396 A CN102735396 A CN 102735396A
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Abstract
The invention relates to a pressure detection device and particularly relates to a high-efficiency sensor for air inlet pressure of an automobile engine. The sensor comprises a pressure detection unit, a signal processing unit, a peripheral element, a PCB (printed circuit board) and an external connection hole; the pressure detection unit and the signal processing unit are integrated to a module unit by using an MEMS (micro-electro mechanical system) technology; and meanwhile, the module unit is packaged by using an SSOP (Shrink Small Outline Package)-8 technology, and the packaged module unit and the peripheral element are reasonably distributed on the PCB and are welded. With the adoption of the sensor provided by the invention, the compatibility between the pressure detection unit and the signal processing unit is enhanced; and the efficiency losing caused by unsoldering is reduced; and the size of the sensor is reduced, so that the sensor for the air inlet pressure of the automobile engine is efficient.
Description
Technical field:
The present invention relates to a kind of motor car engine pressure transducer that is used for, especially a kind of a kind of car engine air admittance pressure transducer.
Background technology:
Air inlet pressure sensor is important sensor in the engine electric spray system; Its inner core is pressure unit and signal processing unit; Now the pressure signal collecting unit is commonly independently two unit with signal processing unit, connects through circuit each other, and two unit in the structure are because of the equal difference of its brand and manufacturing process; Can there be compatibility issue each other; Signal noise, temperature and zero migration, deviation of signal etc. all can the very big work efficiencies that influences sensor, though can improve the work efficiency of sensor through some compensation and correction, compensation and the work of correction meeting increase manufacturing cost greatly.
The pressure unit of sensor generally adopts the SOP-8 encapsulation now, and signal processing unit generally adopts the SSOP-16 encapsulation, so the pad of sensor internal is more.Analyze from the operating mode that engine is actual, because influences such as high temperature, vibration, corrosion, the point that pressure transducer inside is easy to generate inefficacy most is exactly a pad, in case pad increases, corresponding crash rate will strengthen, and influences reliability of products.
Summary of the invention:
The technical matters that the present invention will solve is: a kind of air inlet pressure sensor that in the motor car engine electric injection system, strengthens the compatibility of pressure signal collecting unit and signal processing unit is provided.
In order to solve the above problems, the present invention provides a kind of car engine air admittance pressure transducer, includes pressure sensing cell; Signal processing unit, peripheral cell, pcb board; External hole; Said pressure sensing cell and signal processing unit adopt the MEMS integrated technology to integrate, and through being encapsulated into a modular unit, on pcb board, also weld packaged modular unit and peripheral cell rational deployment.
This a kind of car engine air admittance pressure transducer: improved because of signal noise, temperature and zero migration, deviation of signal and caused the transfer efficiency between pressure sensing cell and the signal processing unit; Strengthen the compatibility between pressure sensing cell and the signal processing unit, also reduced the volume of sensor simultaneously.
Further; Make its sealing-off and the inefficacy that causes in order to reduce the sensor internal pad in high temperature, vibration, corrosion; Said pressure sensing cell and signal processing unit adopt the SSOP-8 encapsulation in integrated back; Reduced pad like this, can effectively reduce the sensor internal pad and make its sealing-off and the inefficacy that causes, improved reliability of products in high temperature, vibration, corrosion.
Description of drawings:
Fig. 1 is the pcb board component placement synoptic diagram of a kind of car engine air admittance pressure transducer of the present invention;
Fig. 2 is pressure sensing cell and a signal Processing integrated chip enlarged diagram in a kind of car engine air admittance pressure transducer of the present invention.
Embodiment:
Below in conjunction with accompanying drawing and embodiment the present invention is further specified:
As shown in Figure 1, a kind of car engine air admittance pressure transducer includes pressure sensing cell 1; Signal processing unit 2, peripheral cell 4, pcb board 3; External hole 5 wherein, is illustrated in figure 2 as integrated chip and includes core body 6 and pin 7; Integrated chip is that said pressure sensing cell 1 adopts the MEMS integrated technology integrated with signal processing unit 2, through being encapsulated into a modular unit, on pcb board 3, also welds packaged integrated chip and peripheral cell 4 rational deployment; Pressure sensing cell 1 adopts the SSOP-8 encapsulation with signal processing unit 2 in integrated back; Become the integrated chip of 8 pins; This a kind of car engine air admittance pressure transducer; Improved because of the transfer efficiency between signal noise, temperature and zero migration, pressure sensing cell that deviation of signal causes and the signal processing unit, strengthened the compatibility between pressure sensing cell and the signal processing unit, also reduced the volume of sensor simultaneously.
Claims (2)
1. a car engine air admittance pressure transducer includes pressure sensing cell, signal processing unit; Peripheral cell; Pcb board, external hole is characterized in that: said pressure sensing cell and signal processing unit are integrated through the MEMS technology; And being packaged into a modular unit, this modular unit and peripheral cell are welded on the pcb board.
2. according to the said a kind of car engine air admittance pressure transducer of claim 1, it is characterized in that: said pressure sensing cell and signal processing unit adopt the SSOP-8 encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102480220A CN102735396A (en) | 2012-07-18 | 2012-07-18 | Sensor for air inlet pressure of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102480220A CN102735396A (en) | 2012-07-18 | 2012-07-18 | Sensor for air inlet pressure of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102735396A true CN102735396A (en) | 2012-10-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102480220A Pending CN102735396A (en) | 2012-07-18 | 2012-07-18 | Sensor for air inlet pressure of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102735396A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6836971B1 (en) * | 2003-07-30 | 2005-01-04 | Honeywell International Inc. | System for using a 2-axis magnetic sensor for a 3-axis compass solution |
| JP2008541039A (en) * | 2005-05-04 | 2008-11-20 | エヌエックスピー ビー ヴィ | Device comprising a sensor module |
| CN202300672U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Electric spraying control device integrated with air inlet pressure sensor |
| CN202305105U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Integrated temperature, pressure and throttling valve position sensing device |
| CN202300671U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Electric injection control device integrating throttle valve position sensor |
| CN202300674U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Electronic fuel injection (EFI) control device integrated with temperature, pressure and throttle valve position sensors |
-
2012
- 2012-07-18 CN CN2012102480220A patent/CN102735396A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6836971B1 (en) * | 2003-07-30 | 2005-01-04 | Honeywell International Inc. | System for using a 2-axis magnetic sensor for a 3-axis compass solution |
| JP2008541039A (en) * | 2005-05-04 | 2008-11-20 | エヌエックスピー ビー ヴィ | Device comprising a sensor module |
| CN202300672U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Electric spraying control device integrated with air inlet pressure sensor |
| CN202305105U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Integrated temperature, pressure and throttling valve position sensing device |
| CN202300671U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Electric injection control device integrating throttle valve position sensor |
| CN202300674U (en) * | 2011-10-26 | 2012-07-04 | 德尔福（上海）动力推进系统有限公司 | Electronic fuel injection (EFI) control device integrated with temperature, pressure and throttle valve position sensors |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |