Non-linear Pressure Sensor Adaptor for Engine Cylinder Monitoring
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Solution Overview
Problem
Obtaining real-time pressure data from engine cylinders is challenging due to the need for engine modification, such as machining special cylinder heads to accommodate pressure sensors, which results in downtime and is not practical for all applications.
Innovation Solution
A pressure sensor adaptor with a non-linear access channel and a pressure sensor channel that spans through a threaded, cylindrical, and annular section, allowing the pressure sensor to be installed without modifying the engine, providing access to the combustion chamber without a straight line access requirement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pressure sensor is installed to obtain real-time pressure data, then measurement capability is improved, but engine modification is required which increases device complexity and causes downtime
Solution Approach 1:
The pressure sensor is nested within the pressure sensor adaptor, which itself is installed in the cylinder head channel. This nested configuration allows the sensor to access the combustion chamber through a non-linear path without requiring direct modification of the engine's linear access paths, thereby reducing device complexity while maintaining measurement capability
Solution Approach 2:
The pressure sensor adaptor serves as an intermediary component that bridges the gap between the pressure sensor and the combustion chamber. It provides a non-linear access channel that connects the sensor to the combustion chamber without requiring direct linear access or engine modification, thus resolving the contradiction between measurement capability and device complexity
2Measurement precision
If a pressure sensor is installed to obtain real-time pressure data, then measurement capability is improved, but engine downtime increases due to machining requirements
Solution Approach 1:
The pressure sensor adaptor is pre-configured with the non-linear access channel and pressure sensor channel before installation. This preliminary preparation allows for quick installation in the cylinder head channel without requiring time-consuming machining operations on the engine, thereby reducing engine downtime while maintaining measurement capability
Solution Approach 2:
The pressure sensor adaptor acts as a pre-fabricated intermediary that eliminates the need for on-site engine modification. By providing a ready-made non-linear access channel, it allows rapid installation without machining operations, thus reducing the loss of time while enabling pressure data acquisition
3Ease of manufacture
If a non-linear access channel is used, then ease of installation is improved, but the channel geometry becomes more complex
Solution Approach 1:
The non-linear access channel is segmented into distinct sections within the pressure sensor adaptor: the threaded section for installation, the cylindrical midsection for structural support, and the annular section for sealing. This segmentation allows each section to be optimized independently, making the complex geometry manageable and the installation process straightforward
Data Source
AI summary
An in-cylinder pressure sensor system and a pressure sensor adaptor that allows for the inclusion of a pressure sensor to monitor the pressure of an engine cylinder is provided. The pressure sensor adaptor includes a first end, a second end, a threaded section, a cylindrical midsection, and an annular section; and a pressure sensor channel that comprises an opening in the first end and an opening in a second end and spans from the first end to the second end through the threaded section, the cylindrical midsection, and the annular section. The pressure sensor may be housed in the pressure sensor channel of the pressure sensor adaptor.