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Pressure sensor for vehicle

A technology of pressure sensor and sensor unit, which is applied in the direction of pressure difference measurement between multiple valves, vehicle components, and measurement of fluid pressure, etc., and can solve the problem of inaccurate detection of environmental pressure, etc.

Active Publication Date: 2020-05-15
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can happen that the infiltrated water adheres due to surface tension not only in the lower arranged second reference pressure hole but also in the higher arranged first reference pressure hole, so that the exact pressure cannot be obtained in either reference pressure hole. environmental pressure

Method used

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  • Pressure sensor for vehicle
  • Pressure sensor for vehicle
  • Pressure sensor for vehicle

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Embodiment Construction

[0015] as by Figure 1 to Figure 5 As shown, the illustrated embodiment of the pressure sensor 1 according to the invention for a vehicle comprises a housing 3 in which at least one sensor unit 20 is arranged, which detects the pressure sensor at the measuring interface 3.3 The pressure difference between the pressure generated at the place and the ambient pressure. The at least one sensor unit 20 detects the ambient pressure at at least two reference pressure holes 12 , 14 . In this case, the sensor drying device 10 comprises a connecting channel 16 which connects at least two reference pressure openings 12 , 14 to one another.

[0016] Such as figure 2 It is further shown that the pressure sensor 1 comprises two reference pressure holes 12 , 14 in the illustrated embodiment. For this purpose, in the installed state, first reference pressure opening 12 is arranged geodetically higher than second reference pressure opening 14 in housing 3 .

[0017] Such as figure 1 and ...

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Abstract

The invention relates to a pressure sensor for a vehicle, comprising a housing (3), in which at least one sensor unit is arranged, which determines a pressure difference between a pressure at a measurement connection point and atmospheric pressure, wherein the at least one sensor unit senses the atmospheric pressure at at least two reference pressure bores (12, 14). The invention further relates to a braking system for a vehicle, comprising at least one such pressure sensor. A sensor dewatering means (10) comprises a connection channel (16), which connects the at least two reference pressure bores (12, 14) to each other.

Description

technical field [0001] The invention relates to a pressure sensor for a vehicle of the type according to independent claim 1 . A braking system for a vehicle having at least one such pressure sensor is also the subject of the invention. Background technique [0002] Pressure sensors for vehicles are known from the prior art, which have a housing in which at least one sensor unit is arranged, which detects the pressure between the pressure generated at the measuring connection and the ambient pressure Difference. The at least one sensor unit detects ambient pressure at at least two reference pressure holes. Such a pressure sensor can be used, for example, in a brake booster of a vehicle in order to detect the pressure difference between the brake pressure generated in the brake booster and the ambient pressure. Such pressure sensors are affected by rain during driving operation. The housing of the pressure sensor is designed in such a way that the pressure sensor can meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22
CPCB60T17/22G01L13/00G01L19/0654G01L19/142B60T17/221B60T2270/88G01L19/06G01L19/14
Inventor 江藤昌也
Owner ROBERT BOSCH GMBH
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