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Pressure sensor

A pressure sensor and pressure technology, applied in the field of sensors, can solve the problem of low pressure detection range, etc., and achieve the effect of convenient and fast installation, convenient and fast connection, and reliable implementation

Active Publication Date: 2017-05-31
JIANGSU AOLIWEI SENSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing pressure sensor is generally used in the leakage detection scheme of the traditional internal combustion engine, and the pressure detection range is relatively low, generally -3.75kPa~1.25kPa

Method used

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Embodiment Construction

[0021] Such as Figure 1-5 The shown pressure sensor includes a plug-in housing 1, the front end of the housing 1 is processed with a cavity for measuring relative pressure, and the rear end of the housing 1 is processed with a plug-in piece 1c and a socket hole 1d. The bottom of the cavity is processed with a protruding steam pipeline 1a, and a pressure through hole 1b that communicates with the cavity is opened in the steam pipeline 1a. A sealing tube 5 is set on the outside of the steam pipeline 1a, and the outer circumference of the sealing tube 5 is processed with multiple channels. The sealing ring 5a, the sealing ring 5a is made of fluorine rubber material, the top of the steam pipeline 1a is riveted with a substrate 9, and the top of the steam pipeline 1a is processed with a concave platform, and the sealing substrate 9 and the steam pipeline 1a are arranged in the concave platform Functional O-ring 11, O-ring 11 is made of fluorine rubber material, the substrate 9 is ...

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Abstract

The invention discloses a pressure sensor and belongs to the field of pressure inspection equipment. The pressure sensor comprises a plug-in type housing. Steam pipes are arranged at the front end of the housing. Pressure through holes are formed in the inside of the steam pipes; the outer parts of steam pipes are sleeved with sealed pipes; the top of each steam pipe is connected with a base board in a riveting mode; vent holes are formed in the base board; a pressure sensor chip is arranged on the base board; the pressure sensor chip is fixed with glue. A cover board is arranged on the cavity in an enclosing mode, the cover board is provided with a boss; the edge of the boss is provided with a flange ; the boss is sleeved with a dust cap; a pressure hole is formed in the middle part of the boss; the bottom of the pressure hole is closed through a filter membrane; the filter membrane is fixed through a convex ring; the pressure sensor chip and the base board are connected through bonding wires, the base board and a plug-in terminal are connected through bonding wires; the plug-in terminal passes through the housing and reaches out via a plug-in hole; the side face of the housing is provided with a lock catch component. The pressure sensor has the advantages of being reliable in structure, simple in manufacture, easy to assemble, low in cost and used for the pressure inspection of the traditional low pressure oil tank.

Description

technical field [0001] The invention relates to a sensor, in particular to a pressure sensor. Background technique [0002] Vehicles with an internal combustion engine include a fuel tank for storing liquid fuels and volatile liquid fuels such as gasoline, methanol, or other fuels. Mostly gasoline. These fuels are affected by temperature (including direct solar radiation, ground heat radiation, high temperature conduction of the oil pump, and heating by the oil return temperature of the oil return pipe) and are easy to evaporate into fuel vapor. Fuel vapors are almost always present whether the vehicle is moving or stationary. If these fuel vapors are directly discharged into the atmosphere, it will cause serious environmental pollution on the one hand and great economic losses on the other hand. Therefore, it is necessary for the vehicle to have a system that can collect and utilize these fuel vapors, which is called "evaporative emission management system". The evapora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K15/03
CPCB60K15/03B60K2015/0321
Inventor 顾常飞孙海鑫俞斌强李冬梅糜帅
Owner JIANGSU AOLIWEI SENSING TECH
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