Intermediary Engine Control Device for Sensor Signal Correction
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Solution Overview
Problem
Existing complementary engine control devices are complex to use and require direct modification of injector control signals, which can lead to errors and increased complexity in installation and operation.
Innovation Solution
A microcontroller-based complementary engine control device that intercepts and modifies probe signals from sensors, allowing for adjustment of engine behavior without direct modification of the original engine control unit's maps, using a system-on-a-chip configuration with interface units connected to a computer bus and sensors, enabling easy installation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If complementary engine control devices directly modify injector control signals, then engine performance can be improved, but the installation and operation complexity increases and errors may occur
Solution Approach 1:
The patent introduces an intermediary device that connects between the original sensor and the engine control unit. This intermediary intercepts sensor signals, applies corrections based on stored maps, and sends corrected signals to the ECU without directly modifying the ECU's internal maps or injector control signals. This mediator approach simplifies installation while achieving engine performance improvement.
Solution Approach 2:
The patent creates a copy of the sensor signal path by inserting an additional control device that receives sensor signals, processes them through correction maps, and outputs corrected signals. This copying mechanism allows modification of engine behavior without altering the original ECU's internal structures or maps.
2Adaptability or versatility
If complementary engine control devices intercept and modify sensor signals, then engine behavior can be adjusted, but the original control unit must be disconnected and reconnected which increases complexity
Solution Approach 1:
The patent uses an intermediary device that can be connected in series between the sensor and the original ECU without requiring disconnection or reconnection of the original control unit. The intermediary acts as a transparent bridge that processes signals while maintaining the original connection integrity, greatly simplifying installation.
3Manufacturing precision
If the original engine control unit's maps are modified, then precise engine control is achieved, but the complexity and risk of errors increase
Solution Approach 1:
Instead of modifying the original ECU's maps, the patent creates a separate correction map system in the intermediary device. This copy approach allows precise engine control through signal correction while keeping the original ECU and its maps intact, reducing complexity and error risk.
Solution Approach 2:
The patent segments the control function by separating the original ECU control from the additional correction control. The intermediary device handles only the correction aspect by intercepting sensor signals, applying corrections, and sending corrected signals to the ECU, while the original ECU maintains its independent control functionality. This segmentation reduces overall system complexity.
Data Source
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AI summary
An add-on motor control device includes a microcontroller, non-volatile memory, an interface unit, an analog input, and an analog output. The interface unit connects the microcontroller to a computer bus and allows the microcontroller to listen for data on the bus. The analog input is connected to the microcontroller via an analog-to-digital converter and is used to connect the add-on device to a sensor. The analog output is connected to the microcontroller via a digital-to-analog converter and is used to connect the add-on device to an analog input of the original motor control unit.The microcontroller is designed so that it can listen to data on the bus, calculate a correction of a signal applied to the analog input based on a map stored in memory, and output a corrected signal to the analog output, which corresponds to the signal applied to the analog input but includes said correction.