Motor Vehicle Emissions Control via Pre-emptive Parameter Adjustment
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Solution Overview
Problem
Existing motor vehicle systems fail to effectively reduce emissions during specific events along a drive cycle, such as lane convergence or speed bumps, leading to increased pollutant emissions that are not adequately addressed by current emissions control methods.
Innovation Solution
A method is introduced that determines a planned or predicted route and identifies emissions causal events, allowing for pre-emptive adjustments to operating parameters like fuel injection and exhaust gas recirculation to minimize emissions during these events, using a fast response emissions sensor in higher-efficiency vehicles to relay data to other vehicles for proactive emission reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If pre-emptive adjustments to operating parameters are implemented to reduce emissions during identified causal events, then emissions efficiency is improved, but system complexity increases due to route determination and event identification requirements
Solution Approach 1:
The system determines the planned or predicted route and identifies emissions causal events in advance before the vehicle reaches them. Operating parameters are adjusted pre-emptively during the periods leading up to these events, allowing emissions reduction without requiring complex real-time response systems during the actual emission events.
2Object-generated harmful factors
If operating parameters are adjusted during emissions causal events to reduce emissions, then emissions values are reduced, but fuel consumption increases due to parameter changes
Solution Approach 1:
The system adjusts operating parameters only during specific periods leading up to emissions causal events, not continuously throughout the entire drive cycle. This partial action approach reduces emissions during critical events while minimizing the impact on overall fuel consumption by limiting parameter adjustments to only when and where they are most needed.
3Object-generated harmful factors
If exhaust gas recirculation is increased to reduce nitrogen oxides during emissions events, then NOX emissions are reduced, but combustion efficiency decreases
Solution Approach 1:
The system increases exhaust gas recirculation during the period leading up to emissions causal events rather than during the events themselves. This preliminary adjustment allows the EGR system to be activated in advance, reducing NOX formation during high-emission events while managing the impact on combustion efficiency through timing control.
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 emissions during identified causal events, improves overall emissions efficiency, and balances multiple pollutants, thereby enhancing fuel consumption and meeting stricter emissions standards.
Implementation Method 1
the motor vehicle may comprise an Exhaust Gas Recirculation (EGR) system, such as a high pressure or a low pressure EGR system, arranged to recirculate a portion of the exhaust gases to be reintroduced into the inlet of the engine. Replacing a portion of the oxygen rich inlet gases with burnt exhaust gases lowers the peak temperature of combustion within the engine cylinders, thereby reducing the formation of nitrogen oxides (NOX).
Implementation Method 2
determining an emissions value of the motor vehicle and a location associated with the emissions value
Data Source
AI summary
Methods and systems are provided for emissions reduction in a vehicle. In one example, a method includes pre-emptively adjusting engine operating parameters in response to an anticipated emissions causal event. The emissions causal event lasting for less than a threshold period of time or less than a threshold distance.