Vehicle Emission Calculation Using Energy Source Certificates
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Solution Overview
Problem
Existing methods for determining vehicle emissions only consider locally generated emissions, neglecting the emissions associated with the production of energy sources, which limits the accuracy of overall emission balance calculations.
Innovation Solution
A method that incorporates emissions certificates for energy sources, stored during charging or refueling, to determine actual emission values by considering both locally generated and production-related emissions, using cryptographic methods for security and communication via existing vehicle interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only locally generated emissions are considered in emission calculations, then the calculation method is simple, but the accuracy of overall emission balance is insufficient
Solution Approach 1:
The emission calculation is segmented into two distinct parts: locally generated emissions (measured by onboard monitoring systems) and production-related emissions (obtained from certificate files). This segmentation allows each component to be handled separately, with the certificate file providing pre-calculated production emissions data, thus improving overall accuracy without proportionally increasing calculation complexity.
Solution Approach 2:
Emission certificate files are generated and prepared in advance at the supply point before energy delivery to the vehicle. These certificates contain pre-calculated production-related emission data based on the energy source's manufacturing process, allowing the vehicle's onboard system to simply retrieve and combine this data with local emission measurements, rather than calculating production emissions in real-time.
2Loss of information
If emissions certificates are transmitted and processed, then complete emission balance is achieved, but data transmission and storage requirements increase
Solution Approach 1:
The emission certificate data is extracted and separated from the energy delivery process itself. The certificate file contains only the essential emission information (production-related emissions, energy source identification, timestamp) needed for the overall emission balance, while the actual energy delivery and vehicle operation proceed independently. This extraction allows emission data to be handled as a separate, minimal data set.
Solution Approach 2:
The emission certificate file serves multiple functions: it provides production emission data for calculation accuracy, acts as a traceability record for the energy source, and enables verification of the emission balance. This multi-functionality justifies the data transmission requirement, as a single certificate file delivers multiple pieces of information needed for complete emission accounting.
3Reliability
If certificate files are stored and transmitted to multiple entities, then emission traceability is improved, but system complexity increases
Solution Approach 1:
The emission certificate file acts as an intermediary document that bridges the supply point and various receiving entities (vehicle onboard system, central server, diagnostic devices). The certificate contains all necessary emission information in a standardized format, allowing any receiving entity to independently verify and process the emission data without requiring complex inter-entity communication protocols or centralized coordination for every data exchange.
Data Source
AI summary
A method for determining actual emission values for a vehicle, comprising receiving a certificate file, which comprises data regarding manufacturing-related emissions of an energy source charged during a charging or refueling operation of a vehicle or a charged electrical current, from a supply point that supplies the energy source or current; and storing the certificate file along with at least one piece of information regarding the charged current amount or energy source amount. By means of the information in the certificate file, the actual emissions for a distance can be calculated.