Vehicle Power Control Device Accelerator Threshold
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Solution Overview
Problem
Existing vehicle power management systems fail to effectively conserve electric power when the driver's intent is to accelerate mildly or not at all, leading to unnecessary quickening of electric power consumption by rotating electrical machines.
Innovation Solution
A vehicle power control device that disallows additional power generation by rotating electrical machines when the accelerator pedal operation is below a certain threshold, allowing generation only when the operation exceeds this threshold, thereby matching power output to the driver's intent and conserving energy when acceleration is weak.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotating electrical machine constantly supplements lacking engine torque to meet target vehicle torque, then the target vehicle torque is satisfied, but electric power consumption of the battery increases quickly against driver intent
Solution Approach 1:
The control system dynamically adjusts the rotating electrical machine's power generation based on accelerator pedal operation amount. When acceleration demand is low, the machine discharges less power; when demand increases, it supplements more. This dynamic control aligns power consumption with actual driver intent while ensuring target torque is met.
Solution Approach 2:
The system changes the operating parameters of the rotating electrical machine based on accelerator pedal position. By monitoring the operation amount threshold, the control device adjusts the machine's power output parameter to match driver acceleration intent, preventing unnecessary power consumption while maintaining torque requirements.
2Reliability
If the rotating electrical machine generates additional power regardless of accelerator pedal position, then torque deficiency is compensated, but energy efficiency deteriorates when driver acceleration intent is weak
Solution Approach 1:
The rotating electrical machine provides partial power supplementation only when necessary. By setting an operation amount threshold for the accelerator pedal, the system applies partial action (power supplementation) only when driver intent exceeds the threshold, avoiding excessive power generation and associated energy waste during mild acceleration conditions.
Solution Approach 2:
The control device continuously monitors accelerator pedal operation amount and uses this feedback to adjust the rotating electrical machine's power generation. This closed-loop feedback ensures power supplementation occurs only when driver acceleration intent warrants it, preventing energy waste while maintaining torque adequacy.
Data Source
AI summary
A power control device of a vehicle disallows generation of additional power of rotating electrical machines when power of an internal combustion engine is transmitted to a transmission via a clutch and an amount of operation of an accelerator pedal is lower than an operation threshold value. The power control device allows generation of additional power of the rotating electrical machines when power of the internal combustion engine is transmitted to the transmission via the clutch and the amount of operation of an accelerator pedal is higher than the operation threshold value.