Keyless Power System Controller for Work Machine Electrical Operation

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Solution Overview

Problem

Conventional work machine start-up systems require an ignition key, creating a security risk when leaving electrical components operational and a climate discomfort when disabling them, as they do not effectively manage alternate power sources for keyless operation.

Innovation Solution

A keyless power system that includes an ignition switch, alternate power sources, and a controller to determine power requirements and activate these sources without a key, ensuring continuous operation of electrical components while maintaining security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the ignition key is left in the ignition switch to operate electrical components, then the electrical system remains operational, but security risk increases

Engineering Contradiction:
Improveelectrical system operationVSAvoidsecurity risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical ignition key system with an electronic keyless operation system. The controller enables electrical components to be operated without physical key insertion, using electronic signals instead of mechanical key-switch interaction. This eliminates the security vulnerability of leaving a physical key in the ignition while maintaining electrical system operation capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If the ignition key is removed from the ignition switch to secure the work machine, then security risk is reduced, but electrical component operation is disabled

Engineering Contradiction:
Improvesecurity riskVSAvoidelectrical system operation
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent substitutes the mechanical key-removal security mechanism with an electronic keyless control system. The controller receives electronic signals to activate or deactivate electrical components without requiring physical key manipulation. This allows the machine to be secured by removing the key while maintaining electrical component operation through electronic activation, resolving the contradiction between security and operational convenience.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Loss of energy

If alternate power sources are used to power electrical components without the main engine, then fuel efficiency is improved, but the system complexity increases

Engineering Contradiction:
Improvefuel efficiencyVSAvoidpower system complexity
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The patent implements a dynamic power source selection system where the controller automatically determines whether to activate the main engine or alternate power sources based on real-time operational requirements. The system dynamically switches between power sources without requiring manual intervention, managing the complexity through automated control logic while enabling fuel efficiency benefits from using smaller alternate power sources when appropriate.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent creates a universal power system where the controller can draw electrical power from multiple sources (main engine generator, alternate power sources, or battery) depending on the situation. This multi-functional power architecture allows the system to adapt to different operational scenarios, using the most efficient power source available while maintaining the ability to handle any power requirement through a single integrated control system.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS7970518B2Method and system for keyless machine operation
Publication Date: 2011.06.28 CATERPILLAR INC
  • US7970518B2 patent drawing
  • US7970518B2 patent drawing
  • US7970518B2 patent drawing

AI summary

The keyless power system has an ignition system including an ignition switch having an “OFF” position and one or more electrical components associated with a work machine. The keyless power system also has one or more alternate power sources configured to provide electrical power to the one or more electrical components. The keyless power system also has a controller configured to determine a power-level requirement of the one or more electrical components and activate at least one of the one or more alternate power sources to at least partially satisfy the power-level requirement based on whether the ignition switch is in the “OFF” position.