Hybrid Drive Control Device Predictive Speed Optimization
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Solution Overview
Problem
Hybrid motor vehicles face challenges in reducing fuel consumption due to inefficiencies in controlling and regulating energy storage and motor vehicle speed, particularly when navigating varying terrain.
Innovation Solution
A hybrid drive control device with a control and regulation unit that prioritizes a speed control operating module over a hybrid operating module, utilizing kinetic energy by predicting route parameters to optimize motor vehicle speed and energy store state, thereby reducing fuel consumption through strategic torque adjustments and energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the hybrid operating module predictively controls the state of charge of the energy store, then energy management is optimized, but fuel consumption reduction is limited due to lack of kinetic energy utilization
Solution Approach 1:
The speed control operating module performs preliminary actions by predictively controlling motor vehicle speed based on upcoming route parameters (uphill/downhill sections). This allows the system to optimize kinetic energy utilization in advance, reducing fuel consumption through proactive speed adjustments rather than reactive control
Solution Approach 2:
The system changes the control parameter priority from energy store state of charge (hybrid operating module) to motor vehicle speed (speed control operating module). This parameter change enables the system to leverage kinetic energy dynamics as a primary fuel-saving mechanism, fundamentally altering the energy management approach to achieve greater fuel consumption reduction
2Extent of automation
If the hybrid operating module autonomously manages torque distribution, then energy store control is optimized, but overall fuel efficiency is compromised due to missed kinetic energy opportunities
Solution Approach 1:
The control system is segmented into two distinct operating modules: the hybrid operating module for energy store management and the speed control operating module for motor vehicle speed optimization. This segmentation allows each module to specialize in its function, with the speed control module specifically targeting kinetic energy utilization to reduce fuel consumption without compromising the autonomous control capabilities of the hybrid operating module
Solution Approach 2:
The speed control operating module performs preliminary speed optimizations based on predicted route conditions before the hybrid operating module executes torque distribution. This preliminary action ensures that kinetic energy opportunities are captured first, maximizing fuel efficiency while maintaining autonomous control over energy management
3Device complexity
If conventional hybrid control is used without speed optimization, then control simplicity is maintained, but fuel consumption reduction potential is significantly limited
Solution Approach 1:
The speed control operating module integrates multiple functions into a single control mechanism: it predictively determines motor vehicle speed, optimizes kinetic energy utilization, and coordinates with the hybrid operating module for torque distribution. This multi-functionality achieves significant fuel consumption reduction without proportionally increasing control system complexity
Solution Approach 2:
The system performs preliminary speed optimization based on route prediction before executing detailed torque control. This preliminary action simplifies the overall control strategy by addressing fuel consumption opportunities at the speed level first, reducing the complexity of subsequent torque distribution decisions
Data Source
AI summary
A hybrid drive control device for a hybrid motor vehicle includes a control or regulation unit having a hybrid operating module that predictively controls or regulates at least a state of charge of an energy store as a function of at least one route parameter. The control or regulation unit has at least one speed control operating module that predictively controls or regulates a motor vehicle speed as a function of the at least one route parameter.