CN202853790U - Sensor device used for detecting gas temperature and pressure of gas inlet manifold of automobile - Google Patents

Sensor device used for detecting gas temperature and pressure of gas inlet manifold of automobile Download PDF

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Publication number
CN202853790U
CN202853790U CN 201220568392 CN201220568392U CN202853790U CN 202853790 U CN202853790 U CN 202853790U CN 201220568392 CN201220568392 CN 201220568392 CN 201220568392 U CN201220568392 U CN 201220568392U CN 202853790 U CN202853790 U CN 202853790U
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CN
China
Prior art keywords
pressure
thermistor
sensor
inlet manifold
chip
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 - Fee Related
Application number
CN 201220568392
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Chinese (zh)
Inventor
陈方岳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG GENGAO ELECTRIC CO Ltd
Original Assignee
ZHEJIANG GENGAO ELECTRIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG GENGAO ELECTRIC CO Ltd filed Critical ZHEJIANG GENGAO ELECTRIC CO Ltd
Priority to CN 201220568392 priority Critical patent/CN202853790U/en
Application granted granted Critical
Publication of CN202853790U publication Critical patent/CN202853790U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a sensor device used for detecting gas temperature and pressure of a gas inlet manifold of an automobile comprising a pressure chip and a thermistor. The pressure chip is a silicon chip formed by using the piezoelectric effect of a semiconductor. One surface of the silicon chip is a negative pressure zone, and the other surface is under the action of the gas inlet manifold pressure. Under the action of the gas pressure in the gas inlet manifold, the silicon chip can be deformed, and the resistance value of the silicon chip can be changed, therefore a bridge voltage can be changed. Because the said voltage is small, the voltage can be provided to a microcomputer circuit after a signal amplification process by a hybrid integrated circuit. The thermistor is an element formed by a semiconductor ceramic agent, which is very sensitive to the temperature. The sensor device uses the NTC type thermistor, when the inlet gas temperature is low, the resistance value of the thermistor is large. When the voltage of the signal, which is input in the ECU by the sensor device, is high, the ECU can control the engine to increase the fuel injection amount, and conversely, the ECU can control the engine to reduce the fuel injection amount. When the temperature is 25degrees, the accuracy of the thermistor is 2%, and the validity of the measuring result can be greatly improved.

Description

The automobile sensor device that detects inlet manifold gas temperature and pressure
Technical field
The utility model relates to a kind of gas temperature pressure sensor device, especially the automobile sensor device that detects inlet manifold gas temperature and pressure.
Background technology
At present, as critical piece in the electro jet car oil spout electronic control system: air inlet pressure sensor, intake air temperature sensor, its function is the electric signal that intake air temperature and admission pressure are provided to miniature control system (ECU), the air inflow of miniature control system (ECU) by the program calculation engine is again according to the corresponding distributive value of calculated signals of other sensor.So the result precision of air inlet pressure sensor and temperature sensor test directly affects the operating mode of engine.Two kinds of sensors that use on the existing market, shortcoming are the too much spaces that has taken engine.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, and a kind of automobile sensor device that detects the inlet manifold temperature and pressure simple in structure, reasonable in design is provided.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of automobile sensor device that detects inlet manifold gas temperature and pressure, by loam cake (2), lower house (5), terminal (1), thermistor (8), circuit board (3), O-ring seal (6) forms, it is characterized in that: circuit board is equipped with pressure chip IC(4 on (3)), pressure chip IC(4) the 2nd pin and terminal 5V join, pressure chip IC(3) the 6th pin, the 8th pin and terminal GND join, pressure chip IC(4) the 7th pin and terminal Vout join, thermistor (8) is installed in lower house (5) air intake opening (7) position, its bipod respectively with terminal MAT, the GND contact pin joins.
Pressure chip is the silicon chip that utilizes semi-conductive piezoelectric effect to make, the one side of silicon chip is negative pressuren zone, the another side effect be inlet manifold pressure, under the effect of gaseous tension, silicon chip will produce distortion in inlet manifold, and the resistance value of silicon chip is changed, thereby bridge voltage is changed, because this voltage is very little, so after by hydrid integrated circuit this signal being amplified processing in the circuit, just offer microcomputer circuit; Thermistor is the element that consists of by to the highstrung semiconductor ceramics matter of temperature working body, this sensor uses NTC type thermistor, when intake air temperature is low, the resistance value of thermistor is large, the signal voltage of sensor input ECU is high, the ECU control engine increases distributive value, otherwise reduces distributive value.25 ℃ of precision of this thermistor are 2%, have greatly improved the validity of measurement result.
The utility model has the advantages that:
(1), simple in structure, reasonable in design owing to introduced thermistor, and make this sensor can carry out simultaneously the measurement of pressure and temperature, make engine structure compacter.
(2), the utility model is owing to having adopted high-precision pressure chip and thermistor, so test result is accurate.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is pressure chip, thermistor connection diagram.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present utility model is described in further detail.
By Fig. 1~Fig. 2 as can be known, a kind of automobile sensor device that detects inlet manifold gas temperature and pressure, by loam cake (2), lower house (5), terminal (1), thermistor (8), circuit board (3), O-ring seal (6) forms, it is characterized in that: circuit board is equipped with pressure chip IC(4 on (3)), pressure chip IC(4) the 2nd pin and terminal 5V join, pressure chip IC(3) the 6th pin, the 8th pin and terminal GND join, pressure chip IC(4) the 7th pin and terminal Vout join, thermistor (8) is installed in lower house (5) air intake opening (7) position, its bipod respectively with terminal MAT, the GND contact pin joins.
Pressure chip 4 is the silicon chips that utilize semi-conductive piezoelectric effect to make, the one side of silicon chip is negative pressuren zone, the another side effect be inlet manifold pressure, under the effect of gaseous tension, silicon chip will produce distortion in inlet manifold, and the resistance value of silicon chip is changed, thereby bridge voltage is changed, because this voltage is very little, so after by hydrid integrated circuit this signal being amplified processing in the circuit, just offer microcomputer circuit; Thermistor 8 is the elements that consist of by to the highstrung semiconductor ceramics matter of temperature working body, this sensor uses NTC type thermistor, when intake air temperature is low, the resistance value of thermistor is large, the signal voltage of sensor input ECU is high, the ECU control engine increases distributive value, otherwise reduces distributive value.25 ℃ of precision of this thermistor are 2%, have greatly improved the validity of measurement result.
The above only is preferred implementation of the present utility model, for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, also can do some adjustment and improvement, and these also should be considered as belonging to protection domain of the present utility model.

Claims (2)

1. an automobile is with the sensor device that detects inlet manifold gas temperature and pressure, by loam cake (2), lower house (5), terminal (1), thermistor (8), circuit board (3), O-ring seal (6) forms, it is characterized in that: circuit board is equipped with pressure chip IC(4 on (3)), pressure chip IC(4) the 2nd pin and terminal 5V join, pressure chip IC(3) the 6th pin, the 8th pin and terminal GND join, pressure chip IC(4) the 7th pin and terminal Vout join, thermistor (8) is installed in lower house (5) air intake opening (7) position, its bipod respectively with terminal MAT, the GND contact pin joins.
According to claim 1 described a kind of automobile with the sensor device that detects inlet manifold gas temperature and pressure, it is characterized in that: pressure chip is the silicon chip that utilizes semi-conductive piezoelectric effect to make, the one side of silicon chip is negative pressuren zone, the another side effect be inlet manifold pressure; Thermistor is the element that consists of by to the highstrung semiconductor ceramics matter of temperature working body.
CN 201220568392 2012-11-01 2012-11-01 Sensor device used for detecting gas temperature and pressure of gas inlet manifold of automobile Expired - Fee Related CN202853790U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220568392 CN202853790U (en) 2012-11-01 2012-11-01 Sensor device used for detecting gas temperature and pressure of gas inlet manifold of automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220568392 CN202853790U (en) 2012-11-01 2012-11-01 Sensor device used for detecting gas temperature and pressure of gas inlet manifold of automobile

Publications (1)

Publication Number Publication Date
CN202853790U true CN202853790U (en) 2013-04-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220568392 Expired - Fee Related CN202853790U (en) 2012-11-01 2012-11-01 Sensor device used for detecting gas temperature and pressure of gas inlet manifold of automobile

Country Status (1)

Country Link
CN (1) CN202853790U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104165722A (en) * 2013-05-16 2014-11-26 罗伯特·博世有限公司 Device for measuring a pressure and a temperature of a fluid medium flowing in a duct
CN105626186A (en) * 2015-11-04 2016-06-01 宁波吉利罗佑发动机零部件有限公司 Engine oil pressure detecting device
CN109185004A (en) * 2018-08-22 2019-01-11 宝鸡吉利发动机有限公司 The igniter and method of engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104165722A (en) * 2013-05-16 2014-11-26 罗伯特·博世有限公司 Device for measuring a pressure and a temperature of a fluid medium flowing in a duct
CN105626186A (en) * 2015-11-04 2016-06-01 宁波吉利罗佑发动机零部件有限公司 Engine oil pressure detecting device
CN105626186B (en) * 2015-11-04 2018-02-02 浙江锋锐发动机有限公司 A kind of engine oil pressure detection means
CN109185004A (en) * 2018-08-22 2019-01-11 宝鸡吉利发动机有限公司 The igniter and method of engine

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130403

Termination date: 20141101

EXPY Termination of patent right or utility model