Hybrid Drive Controller for Adaptive Catalyst Heating Reserve
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Solution Overview
Problem
Existing hybrid vehicle drive systems face inefficiencies and increased environmental footprints due to the reservation of electrical energy for catalyst heating, which reduces the available energy for vehicle operation and increases CO2 emissions.
Innovation Solution
A controller for the hybrid vehicle drive system dynamically reserves electrical energy for catalyst heating based on various factors, including weather data, parking situation, departure time, and distance from the destination, ensuring the catalyst reaches the optimal working temperature while minimizing energy reservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical energy is reserved for catalyst heating, then the catalyst reaches working temperature and emission standards are met, but the electrical energy available for vehicle operation is reduced
Solution Approach 1:
The patent applies dynamics by making the energy reservation variable rather than fixed. The controller dynamically adjusts the reserved electrical energy based on real-time conditions including weather data, parking duration, ambient temperature, and predicted departure time. This allows the system to reserve only the necessary minimum energy for catalyst heating while maximizing available energy for vehicle operation under varying conditions.
Solution Approach 2:
The patent changes the parameter of energy reservation from a constant value to a variable value that adapts to different operating conditions. By monitoring parameters such as ambient temperature, parking duration, and weather forecasts, the system adjusts the energy reservation parameter to optimize both emission compliance and vehicle operational efficiency.
2Temperature
If maximum electrical energy is reserved for catalyst preheating, then the catalyst achieves working temperature in time, but the hybrid operation efficiency is impaired
Solution Approach 1:
The patent applies partial action by reserving only the necessary portion of electrical energy required for catalyst heating rather than reserving maximum available energy. The controller calculates the minimum energy needed based on ambient conditions and parking duration, reserving only that amount while leaving the remainder available for hybrid vehicle operation, thus achieving adequate catalyst preheating without excessive energy reservation.
Solution Approach 2:
The patent performs preliminary calculation of the required energy for catalyst heating before the vehicle departs. By using weather forecasts and ambient temperature data available before departure, the system determines the appropriate energy reservation in advance, allowing optimal energy allocation between catalyst heating and vehicle operation from the start of the trip.
3Reliability
If electrical energy is reserved for catalyst heating, then emission standards are met, but the CO2 emissions of the hybrid vehicle increase
Solution Approach 1:
The patent changes the energy reservation parameter dynamically based on actual needs rather than using a fixed conservative value. By adjusting the reservation amount according to ambient temperature, parking duration, and weather conditions, the system minimizes the energy consumed for catalyst heating while still ensuring emission compliance, thereby reducing unnecessary CO2 emissions from the combustion engine.
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 enhances the efficiency and environmental performance of hybrid vehicles by optimizing energy usage, reducing energy reservation when not necessary, and improving driving comfort by reducing combustion engine operation.
Implementation Method 1
a starting of the electric heating at the proper time, which is prior to the time of a predicted starting of the combustion engine, and a reaching of the working temperature of the catalyst
Data Source
AI summary
A method for operating a drive system of a hybrid vehicle is provided, which comprises reserving, by a controller of the drive system of the hybrid vehicle, electrical energy stored in a traction battery of the drive system and intended for an electrical heating of a catalyst of the drive system. A controller for a drive system of a hybrid vehicle to carry out such a method is also provided.