Engine Torque Arbitration via Reserves Module Coordination
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Solution Overview
Problem
Traditional engine control systems fail to accurately control engine output torque and do not provide rapid responses to control signals, nor coordinate torque control among various devices affecting engine output torque.
Innovation Solution
An engine control system comprising an air control module, a spark control module, and a reserves module that adjusts throttle valve control, spark timing, and determines an arbitrated reserve to generate adjusted torque requests, allowing for rapid torque adjustments and coordination among engine components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional engine control systems are used to control engine output torque, then the system structure is simple, but the torque control accuracy is poor and response speed is slow
Solution Approach 1:
The control system is divided into multiple independent control modules (air control module, spark control module, fuel control module, reserves module) that each manage specific torque control functions. This segmentation allows for more precise control of individual parameters while maintaining overall system manageability and coordination among components.
Solution Approach 2:
The reserves module pre-calculates and maintains torque reserves by adjusting air, spark, and fuel requests in advance. This preliminary action enables the system to quickly respond to torque demands without waiting for real-time calculations, improving response speed while maintaining control accuracy.
2Speed
If traditional engine control systems are used, then the device complexity is low, but the response speed to control signals is slow
Solution Approach 1:
The reserves module pre-calculates torque reserves and maintains ready-to-use adjustment parameters for air, spark, and fuel requests. When torque demands change, the system can immediately apply pre-computed values rather than calculating from scratch, significantly improving response speed.
Solution Approach 2:
The control system continuously monitors actual engine torque output and compares it with requested torque values. Based on this feedback, the reserves module dynamically adjusts torque reserves and coordinates adjustments across air, spark, and fuel modules to maintain optimal response speed.
3Reliability
If traditional engine control systems are used, then the control system structure is simple, but the coordination among various torque control devices is poor
Solution Approach 1:
The reserves module serves as a central coordination unit that integrates and coordinates torque control requests from air, spark, and fuel modules. By merging the torque reserve management function with individual parameter control modules, the system achieves reliable coordination without requiring a completely separate complex control architecture.
Data Source
AI summary
An engine control system includes an air control module, a spark control module, and a reserves module. The air control module controls a throttle valve of an engine based on an adjusted predicted torque request. The spark control module controls spark timing of the engine based on an adjusted immediate torque request. The reserves module determines an arbitrated reserve based on a maximum one of a minimum reserve and an additive reserve sum. The reserves module also generates the adjusted predicted torque request based on a sum of an arbitrated predicted torque request and a requested reserve, wherein the requested reserve is based on the arbitrated reserve.