Integrated Pressure Temperature Sensor with Protruding Sleeve
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure and temperature sensors for mediums in internal combustion engines and other applications face challenges in being compact, lightweight, and cost-effective due to complex production processes and high media resistance, especially when exposed to aggressive chemicals and extreme conditions.
Innovation Solution
A pressure and temperature sensor design with a simplified production process, featuring a socket process connection that protrudes into the medium, a thin separating membrane, and a separate temperature sensor sleeve, reducing mechanical connections and complexity, while maintaining media-tight separation and high sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the separating membrane and sleeve have very small wall thicknesses of less than 0.5 mm for best possible transmission of pressure and temperature, then measurement precision is improved, but manufacturing complexity increases and production costs rise
Solution Approach 1:
The patent combines the separating membrane and the temperature sensor sleeve into a single integrated component. This merging eliminates the need for separate production and assembly processes for these two elements, reducing manufacturing complexity while maintaining the required thin wall thicknesses for accurate pressure and temperature transmission.
Solution Approach 2:
The integrated component serves multiple functions simultaneously: it acts as both the separating membrane for pressure transmission and the sleeve for temperature sensing. This multi-functionality reduces the number of parts and assembly steps, addressing the manufacturing complexity issue while preserving measurement precision.
2Measurement precision
If the sleeve protrudes through a hole in the separating membrane into the feed channel and medium, then temperature transmission is improved, but mechanical connection complexity and production rejects increase
Solution Approach 1:
By integrating the temperature sensor sleeve directly into the separating membrane structure, the patent eliminates the need for separate mechanical connections between these components. The sleeve becomes an inherent part of the membrane, simplifying production and reducing rejects while maintaining effective temperature transmission to the sensor.
3Volume of moving object
If the sensor is designed with compact dimensions and reduced weight, then adaptability to small engine spaces is improved, but structural strength and media-tight separation may be compromised
Solution Approach 1:
The patent employs a thin separating membrane that is sufficiently flexible to transmit pressure accurately while maintaining structural integrity and media-tight separation. This thin film approach enables compact sensor dimensions without compromising the essential function of separating the measurement medium from the sensor components.
Solution Approach 2:
The sensor is designed with modular segmentation, where the integrated membrane-sleeve component is precisely engineered to provide the necessary strength and sealing in a compact form. This segmented design allows optimization of each component's thickness and structure to balance compactness with structural requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design results in a sensor with reduced external dimensions, lower weight, and lower production costs, while maintaining high sensitivity and resistance to aggressive media, addressing the need for compact and lightweight sensors in demanding environments.
Implementation Method 1
The separating membrane transmits the pressure of the medium to the pressure sensor module
Implementation Method 2
The sleeve transmits the temperature of the medium to the temperature sensor
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a pressure and temperature sensor (1) comprising a pressure sensor module (2) for detecting the pressure of a medium; a separating membrane (3) for a media-tight separation of the medium from the pressure sensor module (2) and for transmitting the pressure from the medium to the pressure sensor module (2); a process connection (4) having a feed channel (41); the feed channel (41) is designed to supply medium to the separating membrane (3); the pressure sensor module (2) is arranged on a side of the separating membrane (3) facing away from the feed channel (41); a temperature sensor (5) for detecting the temperature of the medium; a sleeve (51) for a media-tight separation of the medium from the temperature sensor (5) and for transmitting the temperature from the medium to the temperature sensor (3); a first end of the sleeve (31) is designed to project into the medium;The temperature sensor (5) is arranged in the sleeve (51), with a second end of the sleeve (51) being mechanically connected to the process connection (4).