Vehicle Emission Control Unit Planning Strategy
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Solution Overview
Problem
Existing vehicle control systems face challenges in optimizing pollutant emissions to meet legally prescribed limits, as various functions can increase emissions while reducing fuel consumption, and there is a need for efficient monitoring and adjustment of these emissions over time.
Innovation Solution
A control unit that predicts and adjusts pollutant emissions by operating emission-relevant functions based on planning emission values, comparing them to reference values, and optimizing operating parameters and function priorities to ensure compliance with emission limits without adversely affecting driving operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If emission-relevant functions are activated to reduce pollutant emissions, then emission compliance is improved, but fuel consumption increases and driving performance may be adversely affected
Solution Approach 1:
The control unit determines a planning emission value for a future planning time period and pre-plans the operation of emission-relevant functions. By predicting future emissions and preparing control strategies in advance, the system can activate emission-reducing functions only when necessary and optimize their operation to minimize fuel consumption impact while ensuring emission compliance.
Solution Approach 2:
The system dynamically adjusts the operation of emission-relevant functions based on real-time conditions and predicted emission values. The control unit continuously monitors actual emissions against planning values and adapts the activation and deactivation of emission-reducing functions accordingly, optimizing the balance between emission control and fuel consumption based on changing driving conditions.
2Object-generated harmful factors
If multiple emission-relevant functions are operated simultaneously to ensure emission compliance, then emission reduction is improved, but system complexity and control difficulty increase
Solution Approach 1:
The control unit implements a feedback mechanism by continuously comparing actual emission values against planning emission values. Based on this comparison, the system automatically adjusts the operation of emission-relevant functions. This closed-loop control simplifies the management of multiple functions by providing a systematic approach to coordinate their operation based on real-time emission status.
Solution Approach 2:
The control unit serves as a universal control element that manages multiple emission-relevant functions through a unified planning and control approach. By determining a single planning emission value that accounts for the combined effect of multiple functions, the system simplifies coordination complexity while ensuring overall emission compliance.
3Use of energy by moving object
If emission-relevant functions are deactivated to reduce fuel consumption, then fuel efficiency is improved, but pollutant emissions increase and may exceed legal limits
Solution Approach 1:
The system determines planning emission values for future time periods in advance, allowing it to predict when emission-reducing functions will be needed. This enables the control unit to keep functions deactivated during periods when emissions are naturally low or when other mitigation strategies are sufficient, thereby reducing fuel consumption while ensuring functions are activated in advance of potential emission violations.
4Object-generated harmful factors
If the control system continuously monitors and adjusts all emission-relevant functions to optimize emissions, then emission compliance is improved, but computational load and processing time increase
Solution Approach 1:
The control unit determines planning emission values for future time periods in advance, performing computational analysis before real-time control is needed. This preliminary calculation reduces the real-time processing burden by pre-establishing emission targets and control strategies, allowing the system to make faster real-time adjustments based on deviations from these pre-planned values.
Data Source
AI summary
A control unit is provided for a vehicle having an internal combustion engine which generates exhaust gases when a fuel is burnt. The vehicle has a multiplicity of emission-relevant functions by which a quantity of emissions in the exhaust gases can be changed. The control unit is configured to determine a planning emission value for a planning time period, wherein the planning emission value indicates the quantity of emissions in the exhaust gases in the planning time period. The control unit is further configured to operate the multiplicity of emission-relevant functions within the planning time period as a function of the planning emission value.