Dual-Controller Engine Management for EFI and ISG Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The use of a single ECU for both EFI and ISG systems in vehicles results in bulkiness, heat dissipation issues, increased space requirements, and complex servicing due to combined heat generation, necessitating a more efficient and modular control system.
Innovation Solution
A dual-controller system is introduced, where a first controller manages EFI and ignition systems, and a second controller manages the ISG, connected via a control bus, allowing independent operation and maintenance, with each controller communicating through CAN or K-line protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate control units are used for different engine functions, then functional specialization is improved, but system complexity and communication overhead increase
Solution Approach 1:
The patent combines multiple control units (fuel injection control, ignition control, valve timing control) into a single integrated control unit that manages all engine functions through a unified microprocessor system, reducing system complexity while maintaining functional specialization through software modules
Solution Approach 2:
The control unit is designed as a universal platform that can perform multiple engine control functions (fuel injection, ignition, valve timing) and adapt to different engine configurations through programmable software, eliminating the need for separate dedicated control units for each function
2Productivity
If real-time control of multiple engine parameters is implemented, then engine performance is improved, but computational load and response time requirements increase
Solution Approach 1:
The control unit pre-calculates optimal control parameters for different operating conditions and stores them in lookup tables, allowing rapid retrieval and adjustment during real-time operation without complex computational delays
Solution Approach 2:
The system implements periodic sampling and control cycles for different engine parameters, updating control signals at optimized intervals that balance real-time performance requirements with computational processing capacity
3Loss of energy
If integrated control of fuel injection, ignition, and valve timing is implemented, then overall engine efficiency is improved, but control system complexity increases
Solution Approach 1:
The patent integrates control of fuel injection timing/quantity, ignition timing, and valve timing into a single control unit that coordinates all three functions through centralized processing, enabling optimized energy efficiency while managing complexity through unified architecture
Solution Approach 2:
The control unit incorporates feedback from various sensors (crankshaft position, camshaft position, oxygen sensors) to continuously monitor engine operation and adjust fuel injection, ignition, and valve timing parameters in real-time, achieving high efficiency through coordinated control based on actual engine conditions
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention discloses an engine management system (200) for a vehicle (100). Accordingly, the engine management system (200) has a first controller (210) operatively coupled to a fuel injection system and an ignition system of an internal combustion engine and second controller (220) which is remotely located from the first controller (210) and operatively coupled to an Integrated Starter Generator (ISG) (250). The first controller (210) is configured to receive inputs from a first set of sensors (260) mounted on the vehicle (100) whereas the second controller (220) is configured to receive inputs from the first controller (210) and from a second set of switches (280) mounted on the vehicle (100). Further, the engine management system (200) has a control bus (262) interconnecting the first controller (210) and the second controller (220).