Hybrid Vehicle Route Segmentation for Home-Area Motor Driving
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Solution Overview
Problem
Existing hybrid electric vehicle systems fail to create an appropriate drive assistance plan when the user sets a motor drive area around their home, especially when the home is located at an intermediate position in the travel section, leading to suboptimal motor driving strategies.
Innovation Solution
The hybrid electric vehicle includes a control device that divides a travel section containing a motor-driving designated point into two sections, allowing for a more tailored drive assistance plan by assigning motor drive mode to one section and normal drive mode to the other, based on the travel route information and the vehicle's location, using map data to optimize power usage from the engine and motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the drive assistance plan assigns motor driving to a travel section including the home as an intermediate position, then noise reduction around the home is achieved, but the driving plan becomes suboptimal and energy efficiency deteriorates
Solution Approach 1:
The travel section containing the home is divided into multiple sub-sections based on the home's position (intermediate or destination). This segmentation allows the control device to assign different drive modes to different sub-sections, optimizing energy efficiency while ensuring motor driving in sections leading to the home for noise reduction.
Solution Approach 2:
Different drive modes (motor driving or normal driving) are assigned to different local sections of the travel route based on the home's location. When home is an intermediate position, motor driving is assigned to sections before reaching home while normal driving may be used after passing home, creating locally optimized quality for each section.
2Ease of operation
If the drive assistance plan treats the entire travel section as one unit, then the plan creation process is simple, but it cannot create a more appropriate drive assistance plan when home is at an intermediate position
Solution Approach 1:
The drive assistance plan creation process dynamically adapts based on the home's position in the travel section. The control device determines whether home is an intermediate position or final destination and automatically adjusts the travel section division and drive mode assignment accordingly, making the system versatile without complicating the user interface.
Data Source
AI summary
A control device for a hybrid electric vehicle is configured to perform drive assistance control that causes the hybrid electric vehicle to travel based on a drive assistance plan in which a motor drive mode or a normal drive mode is assigned to each of travel sections of a travel route using information on the travel sections, the travel route being a planned or estimated travel route based on map information and the location of the hybrid electric vehicle. When the travel sections of the travel route include a specific travel section having a motor-driving designated point, the control device divides the specific travel section into two travel sections at the motor-driving designated point based on a predetermined condition and performs the drive assistance control, the motor-driving designated point being a point at which the hybrid electric vehicle is supposed to arrive by motor driving.