Modular Engine Control Architecture for Emissions Precision
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Solution Overview
Problem
Modern diesel engines face complexity in achieving precise control of emissions and fuel economy due to numerous interacting components, making design, implementation, and calibration challenging, especially with the increasing use of electrified components and advanced aftertreatment systems.
Innovation Solution
A modular control system architecture with a high-level supervisory controller and low-level component controllers using model predictive control and non-linear dynamic inversion, facilitating coordinated control of engine components across various modes, reducing development costs and enabling modularity for new technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex engine system with numerous interacting components is used to achieve precise control of emissions and fuel economy, then emissions control precision is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into multiple independent controllers, each responsible for specific engine components or functions. This modular architecture allows precise control of emissions through dedicated controllers while managing overall system complexity by distributing control tasks across separate units rather than requiring a monolithic complex system.
2Object-generated harmful factors
If advanced aftertreatment systems and electrified components are added to improve emissions control, then emissions reduction is improved, but device complexity increases
Solution Approach 1:
Advanced aftertreatment systems and electrified components are integrated through a segmented control architecture where dedicated controllers manage each subsystem. This enables effective emissions reduction through advanced technologies while managing complexity by organizing control functions into modular, independent units that can be calibrated and maintained separately.
3Measurement precision
If coordinated control of multiple engine components is implemented to achieve fuel economy and emissions targets, then emissions control precision is improved, but ease of operation deteriorates
Solution Approach 1:
The coordinated control of multiple engine components is achieved through segmented controllers that independently manage specific functions. Each controller operates autonomously within its domain, simplifying the overall operation by eliminating the need for centralized coordination while maintaining precise emissions control through distributed intelligence.
Solution Approach 2:
Each controller in the system is designed to autonomously manage its controlled components without requiring manual intervention or complex coordination from other controllers. The controllers self-regulate engine parameters to achieve fuel economy and emissions targets, making the system easy to operate while maintaining high precision through automated control algorithms.
Data Source
AI summary
A system for coordinated control of an engine and associated components over various engine-modes of operation. The system may include an engine, one or more components controllable to adjust operation of the diesel engine, and a system controller. The system controller may be connected to the engine and the one or more components. The system controller may include a supervisory controller and one or more component controllers. The supervisory controller may receive system control variable set points and coordinate component control variable set points for the components to achieve the system control variable set points. The component controllers may control operation of the components to achieve the control variable set points for the components by setting manipulated variable set points for the components based on the component control variable set points and a model based non-linear dynamic inversion.