Acceleration Pedal Torque Map Switching for Road-Adaptive Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle acceleration-pedal systems struggle to adapt to varying road conditions and driving needs, leading to inefficient fuel consumption and increased emissions due to invalid pedal fluctuations and excessive driver input.
Innovation Solution
An acceleration-pedal control method that switches between four torque maps (MAP1 to MAP4) based on vehicle speed, weight, road slope, and driver mode (E or P), automatically adjusting engine torque to match driving conditions and habits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single acceleration-pedal map is used for engine torque control, then the control system is simple, but it cannot adapt to different road conditions and driving needs, leading to poor fuel economy and increased emissions
Solution Approach 1:
The patent divides the single acceleration-pedal map into multiple segment maps (MAP0-MAP4), each optimized for specific driving conditions. The system segments the control space based on vehicle weight and road slope, allowing selective application of appropriate maps. This segmentation enables the system to adapt to different conditions without requiring a completely complex reconfiguration, as each segment map is a simplified version tailored to specific scenarios.
Solution Approach 2:
The patent implements dynamic switching between different acceleration-pedal maps based on real-time detection of vehicle weight and road slope conditions. The system transitions from a static single-map approach to a dynamic multi-map selection mechanism. The counter variable and switching logic enable the system to adaptively select the most appropriate map (MAP0-MAP4) according to current driving conditions, improving fuel economy and emissions while maintaining manageable complexity through rule-based dynamic adaptation.
2Productivity
If pre-calibrated parameters are used for engine torque control, then the control implementation is simple, but the engine output torque cannot meet actual driving needs under varying road conditions
Solution Approach 1:
The patent changes the parameters of the acceleration-pedal maps by creating multiple versions (MAP0-MAP4) with different calibration characteristics optimized for specific conditions. Each map has distinct torque values and response characteristics tailored to particular vehicle weight and road slope combinations. This parameter variation allows the system to optimize fuel efficiency and power delivery for each driving scenario while maintaining the simplicity of map-based control implementation.
Data Source
AI summary
An acceleration-pedal control method, apparatus and system are provided. The acceleration-pedal control method comprises: acquiring an accelerator torques MAP1, MAP2, MAP3 and MAP4; on the basis that the initial value of a counter is 0 and a vehicle speed meets a preset vehicle speed condition, the counter starting to count; controlling an acceleration pedal to operate according to an accelerator torque MAP0 in case of the counter value of 0, according to the accelerator torque MAP1 in case of the counter value of 1, according to the accelerator torque MAP2 in case of the counter value of 2, according to the accelerator torque MAP3 in case of the counter value of 3, and according to the accelerator torque MAP4 in case of the counter value of 4.