Engine Injector Control Lines for Power and Data
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Solution Overview
Problem
Internal combustion engines with common rail fuel injection systems face time delays and deviations between injectors due to the lag between injector energization and fuel injection start/end, as well as aging effects, leading to inefficiencies in exhaust gas composition control and increased cabling requirements.
Innovation Solution
The use of control lines for both fuel injection control signals and bi-directional data exchange, where energy is supplied during injector pauses and data is exchanged or modulated onto the injection signal, allowing for reduced wiring and precise injector operation through integrated electronic components like microprocessors and energy storage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate signal transmission lines are used for each injector to ensure reliable communication between the electronic control unit and injectors, then communication reliability is improved, but the cabling complexity and expenses increase
Solution Approach 1:
The patent combines multiple functions into a single control line: it serves as both the power supply line for the intelligent electronic component and the bidirectional data communication line. This merging eliminates the need for separate signal transmission lines for each injector, reducing cabling complexity while maintaining communication reliability through integrated functionality.
Solution Approach 2:
The control line is designed with multi-functionality, serving simultaneously as an energy transmission line for charging the energy storage device and as a bidirectional data exchange line for communication between the electronic control unit and the injector. This universal use of the control line reduces the overall number of cables required in the system.
2Ease of manufacture
If passive memory components are used in injectors to store individual parameters, then manufacturing costs are reduced, but additional signal transmission lines are required for reading parameters
Solution Approach 1:
The patent merges the parameter reading function with the existing control line used for injector actuation. The control line serves dual purposes: delivering actuation signals to the injector and reading/storing individual injector parameters in the intelligent electronic component. This eliminates the need for additional signal transmission lines that would be required by passive memory components alone.
Solution Approach 2:
The intelligent electronic component utilizes the control line for multiple functions: receiving actuation signals, reading individual injector parameters, and storing data. This multi-functional approach allows the system to achieve the benefits of passive memory components while avoiding the need for separate reading lines.
3Ease of operation
If multiple separate lines are used for power supply and signal transmission to each injector, then functional separation is improved, but the overall system complexity and installation effort increase
Solution Approach 1:
The patent combines power supply and signal transmission functions into a single control line that serves the intelligent electronic component. The control unit delivers both actuation signals and power through this integrated line, simplifying the overall system architecture while maintaining functional separation between control and execution functions.
Solution Approach 2:
The control line is designed as a universal interface that handles multiple functions: power delivery to the energy storage device, bidirectional data communication, and injector actuation. This multi-functional design reduces system complexity and installation effort while preserving the necessary functional separations through intelligent control logic.
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
This approach reduces cabling needs, enhances communication between the engine control unit and injector, and enables more precise fuel injection by utilizing the control lines for both energy transmission and data exchange, thereby improving injector performance and reducing component costs.
Implementation Method 1
an electric energy storage device (9) for supplying energy to the electronic block during operation of the internal combustion engine
Implementation Method 2
control lines (3) for the transmission of fuel injection control signals from the electronic engine control unit (1) to the injector (2)
Data Source
AI summary
In an arrangement for controlling an internal combustion engine comprising an electronic engine control unit, a cylinder with a combustion chamber, a fuel injector, an intelligent electronic block with an electronic data storage unit, a computing unit, a signal measuring unit and an electric energy storage device for supplying energy to the electronic block during operation of the internal combustion engine, and control lines for the transmission of fuel injection control signals from the electronic engine control unit to the injector, the control lines for the transmission of injector control signals serve as energy transmission for the energy storage device and, at the same time, as bi-directional data exchange lines.