Sensing Unit for Engine Position Signal Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Upgrading older internal combustion engines to be compatible with newer engine control units (ECUs) is costly and labor-intensive due to incompatibility issues with existing sensors and distributor systems, particularly in converting crankshaft and camshaft position signals.
Innovation Solution
A sensing unit with a housing that mounts externally to the engine's timing cover, featuring adjustable crankshaft and camshaft sensors, and a wiring harness converter to generate and re-map the necessary 24× and 1× signals, allowing compatibility with newer ECUs, such as the Gen 3 LS series engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a timing cover with integrated sensors and reluctors is used, then sensor alignment and signal accuracy are improved, but installation complexity and labor requirements increase
Solution Approach 1:
The sensing unit is separated from the timing cover, allowing the sensors and reluctors to be independently installed and adjusted. The timing cover remains a simple structural component while the sensing unit becomes a modular assembly that can be calibrated separately, resolving the contradiction between signal accuracy and installation complexity.
Solution Approach 2:
An adjustable mounting bracket serves as an intermediary between the timing cover and the crankshaft sensor. This bracket enables precise positioning and alignment of the sensor relative to the reluctor without requiring complex integration into the timing cover itself, thereby maintaining signal accuracy while simplifying the overall system installation.
2Ease of operation
If external sensing units with adjustable mounts are used, then installation ease and adaptability are improved, but potential alignment precision may worsen
Solution Approach 1:
The mounting bracket incorporates adjustable features that allow the sensor position to be dynamically modified during installation. This adjustability enables achieving precise alignment through simple positioning adjustments rather than requiring pre-configured fixed mounts, thus maintaining both ease of installation and alignment precision.
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
Enables accurate and reliable generation of engine position signals, facilitating the upgrade of Gen 2 engines to Gen 3 ECUs without the need for extensive mechanical modifications, reducing costs and labor while ensuring precise engine timing.
Implementation Method 1
The use of a programmable ECU can allow modification of the engine characteristics... Hall effect or optical sensors that provide engine ignition timing information to an engine control unit (ECU)
Implementation Method 2
Inside the Optispark is an optical sensor and a timing disc which has two rows of notches
Data Source
AI summary
A sensing unit that provides fixed arrangement of crankshaft and camshaft position sensors is disclosed. The sensing unit attaches to the front timing cover to replace the existing distributor so that the position of sensing unit is aligned according to the tight tolerances of the existing distributor with respect to the camshaft and crankshaft. The sensing unit has a housing with the mounting positions for the camshaft and crankshaft position sensors. The sensing unit can also include a camshaft reluctor within the housing. A crankshaft reluctor is installed onto the engine crankshaft for detection by the crankshaft sensor. The sensing unit is also installed in conjunction with a wiring harness converter that allows a different engine control unit to be used.