Potentiometer Apparatus for Disabling Variable Cylinder Management
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Solution Overview
Problem
Existing variable cylinder management technologies in vehicles, such as Honda's VCM system, cause maintenance issues like increased engine vibration, oil consumption, and premature wear, and are difficult to disable without modifying firmware or triggering a check-engine light, leading to increased ownership costs and warranty concerns.
Innovation Solution
A potentiometer-based apparatus that adjusts sensor signals to fool the vehicle's computer into disabling VCM/ECO mode, using analog or digital potentiometers connected to microcontrollers, which can automatically adjust resistance based on various vehicle conditions and data from OBD2, CAN-Bus, or accelerometers, allowing for easy and safe disabling of VCM/ECO mode without compromising other systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If variable cylinder management technology is implemented to improve fuel economy, then gas mileage performance is improved, but maintenance reliability deteriorates due to increased engine vibration, oil consumption, and premature wear
Solution Approach 1:
The patent extracts the harmful variable cylinder management functionality from the engine control system by intercepting and modifying the sensor signals that trigger it. The device removes the problematic control logic while preserving the base engine operation, effectively separating the fuel-saving feature from the maintenance reliability issue.
Solution Approach 2:
The patent introduces an intermediary device (voltage modifying apparatus) between the temperature sensor and the engine control unit. This intermediary modifies the sensor voltage output to prevent the ECU from activating VCM mode, thereby mediating between the driver's desire for fuel economy and the need to avoid maintenance problems.
2Reliability
If variable cylinder management technology is disabled through firmware modification, then maintenance reliability is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent replaces complex firmware modification with a simple, inexpensive voltage modifying apparatus that can be easily installed and removed. This disposable-like device costs far less than professional reprogramming services and can be applied by the vehicle owner without specialized tools or knowledge.
Solution Approach 2:
The patent substitutes the electronic firmware modification approach with a hardware-based voltage modification system. Instead of changing software code in the ECU, the system uses physical voltage modification on the sensor circuit to achieve the same effect, making it more accessible to typical vehicle owners.
3Reliability
If sensor resistance is modified to disable VCM mode, then variable cylinder management is disabled, but adaptability deteriorates due to climate and temperature variations
Solution Approach 1:
The patent transforms the static resistance modification approach into a dynamic system that automatically adjusts voltage output based on actual temperature sensor readings. The apparatus continuously monitors the sensor signal and modifies the voltage in real-time to maintain the threshold that prevents VCM activation, regardless of ambient climate conditions.
Solution Approach 2:
The patent changes the voltage parameter dynamically rather than using a fixed resistance value. By continuously adjusting the output voltage based on the temperature sensor's actual readings and the desired threshold, the system adapts to different climates and operating conditions while maintaining reliable VCM disabling.
4Reliability
If VCM mode is disabled by fooling the computer with modified sensor signals, then maintenance issues are reduced, but device complexity increases
Solution Approach 1:
The patent uses a simple voltage modifying intermediary device that sits between the temperature sensor and the ECU. This intermediary performs a single function - modifying the voltage signal to prevent VCM activation - without requiring complex processing, multiple sensors, or sophisticated control algorithms, thereby maintaining low device complexity.
Solution Approach 2:
The patent creates a self-service system where the voltage modifying apparatus automatically monitors the temperature sensor output and adjusts the voltage to maintain the threshold that disables VCM. The system serves itself by continuously adapting to temperature changes without requiring user intervention or complex external control systems.
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 users to easily and safely disable VCM/ECO mode in all scenarios, minimizing maintenance issues and avoiding warranty invalidation, while allowing for seamless re-enabling under specific conditions, thus reducing the total cost of ownership and enhancing vehicle reliability.
Implementation Method 1
disabling these systems requires modifying the resistance of a particular sensor circuit, thus changing the voltage returned to a specific vehicle ECU sensor
Data Source
AI summary
The presently disclosed subject matter relates to an apparatus which enables a use to easily and safely disable a vehicular variable cylinder management technology system, while enabling restoration of the VCM/ECO mode under certain vehicle-related conditions or driving conditions. The presently disclosed apparatus comprises a potentiometer capable of modifying the voltage input received by the vehicle sensors.