Combined Pressure-Temperature Sensing to Simplify Exhaust Mounting
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Solution Overview
Problem
Existing exhaust systems require separate and expensive fluid pressure and temperature sensors, which are costly due to high temperatures and vibrations, and their mounting adds complexity and cost.
Innovation Solution
A combined sensing apparatus with integrated fluid pressure and temperature sensors, housed in a single unit, providing a combined signal output through a control circuitry and single edge nibble transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate fluid pressure and temperature sensors are used, then each sensor can independently measure its parameter, but the system complexity and cost increase due to multiple mounting arrangements and connections
Solution Approach 1:
The patent combines separate fluid pressure and temperature sensors into a single integrated sensor unit. The housing contains both sensing elements, allowing them to share common mounting structures, sealing arrangements, and connection interfaces. This merging reduces the number of separate mounting arrangements and connections required while maintaining independent measurement capabilities for both parameters.
Solution Approach 2:
The integrated sensor unit serves multiple functions simultaneously - measuring both fluid pressure and temperature through a single mounting interface. The housing and sealing arrangements are designed to accommodate multiple sensing functions, eliminating the need for separate mounting arrangements for each sensor type and reducing overall system complexity.
2Measurement precision
If separate fluid pressure and temperature sensors are used, then each sensor can be optimized for its specific measurement, but the cost increases due to high temperature and vibration requirements
Solution Approach 1:
By integrating multiple sensors into a single unit with shared housing and sealing structures, the patent reduces the total number of components requiring high-temperature and vibration-resistant designs. The common mounting interface and sealing arrangements can be optimized once for the combined unit rather than separately for each sensor, reducing manufacturing cost while maintaining measurement precision.
3Loss of information
If multiple separate sensors are installed, then comprehensive monitoring is achieved, but the number of connections to the ECU increases
Solution Approach 1:
The integrated sensor unit combines multiple sensing functions into a single connection interface. Both fluid pressure and temperature measurements are obtained through one mounting arrangement and connection to the ECU, eliminating the need for separate connections for each sensor while maintaining comprehensive monitoring coverage for all parameters.
Data Source
AI summary
A sensing apparatus includes two or more sensor arrangements, a housing which is configured to house the two or more sensor arrangements, a first sensor arrangement which is configured to sense a first property, a second sensor arrangement which is configured to sense a second property, and an output arrangement which is configured to provide an output signal from the sensing apparatus in dependence upon an output of the first sensor arrangement and an output of the second sensor arrangement, the first property is different from the second property, and the sensing arrangement is configured to provide a combined signal output by way of the output arrangement.