Power Supply Control for Engine Speed Stability

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Solution Overview

Problem

Existing power supply control systems face inefficiencies in energy usage when transitioning electrical loads from operational to non-operational states, leading to delayed power interruptions and increased energy consumption.

Innovation Solution

A power supply control system that includes a power generator, a power supply (such as a capacitor and a battery), and a control unit that charges the power supply until a predetermined period elapses after switching from an operational to a non-operational state, allowing for continuous charging and efficient energy management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the supply of power to the electrical load is interrupted immediately when switching from operation state to non-operation state, then energy efficiency is improved, but the rotational speed of the internal combustion engine increases rapidly

Engineering Contradiction:
Improveenergy efficiencyVSAvoidrotational speed of internal combustion engine
Core Design Contradiction:
Loss of energyVSSpeed

Solution Approach 1:

The control unit charges the power supply in advance before the electrical load is switched from operation state to non-operation state. This preliminary charging action ensures that the power supply is ready to immediately take over power delivery when the load is interrupted, preventing rapid engine speed increase while maintaining energy efficiency through timely power supply management

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The power supply acts as an intermediary energy storage device between the power generator and the electrical load. By charging the power supply before load interruption and using it to maintain power delivery during the transition period, the system mediates the conflict between immediate power cutoff (for energy efficiency) and engine speed stability

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the supply of power to the electrical load is delayed when switching from operation state to non-operation state, then the rotational speed of the internal combustion engine is stabilized, but energy efficiency is reduced due to excessive delay

Engineering Contradiction:
Improverotational speed stabilityVSAvoidenergy efficiency
Core Design Contradiction:
Stability of the object's compositionVSLoss of energy

Solution Approach 1:

The control unit performs preliminary charging of the power supply before the load switching occurs, and precisely controls the timing to stop charging at a predetermined moment. This preliminary action with precise timing control allows the system to maintain engine speed stability while avoiding excessive delay that would waste energy, achieving optimal balance between the two competing requirements

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The control unit dynamically adjusts the charging timing and duration based on the operational state transitions. By controlling when to start and stop charging the power supply relative to load switching events, the system dynamically optimizes the balance between engine speed stability and energy efficiency, avoiding both rapid speed changes and excessive delays

Inventive Principle:
Principle #15Dynamics

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 prevents rapid increases in internal combustion engine rotational speed and enhances energy efficiency by ensuring timely power supply interruptions and optimal energy utilization.

Implementation Method 1

a power supply configured to be charged with power supplied by the power generator

Methodology Applied
Scientific EffectCapacitance: Capacitance

Implementation Method 2

a power supply (such as a capacitor and a battery)

Methodology Applied
Scientific EffectBattery (electricity): Battery (electricity)

Data Source

PatentUS10411308B2Power supply control system and power supply control method
Publication Date: 2019.09.10 HONDA MOTOR CO LTD
  • US10411308B2 patent drawing
  • US10411308B2 patent drawing
  • US10411308B2 patent drawing

AI summary

A power supply control system includes a power generator, a power supply configured to be charged with power supplied by the power generator, an electrical load configured to operate according to the power supplied by the power generator, and a control unit configured to charge the power supply until a predetermined period elapses after switching from an operation state in which the electrical load is operated to a non-operation state when the power generator generates the power.