Work Vehicle Error Releasing Device Using One-Time Password Authentication

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Solution Overview

Problem

The existing exhaust gas treatment systems for work vehicles face challenges in securely releasing engine output limiting controls to prevent non-purified exhaust gas emissions, as current methods can be easily bypassed, leading to potential environmental violations and security risks due to the ease of spreading service passwords.

Innovation Solution

An error releasing device for work vehicles that utilizes a one-time password with a valid period, authenticated through a processing algorithm common with an external device, ensuring that only authorized personnel can release exhaust gas treatment system errors, thereby enhancing security and compliance with emission regulations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a service password is used to release exhaust gas treatment system errors, then error release is enabled for authorized personnel, but the password can be easily spread to other persons and strict management becomes difficult

Engineering Contradiction:

Improveerror release authorizationVSAvoidpassword leakage risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary authentication by verifying the service password before allowing error release operations. This ensures that only authorized personnel can initiate the error release process, maintaining reliability while preventing unauthorized access through pre-validated credentials

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control unit acts as an intermediary between the service password and the error release function. It mediates the authentication process by verifying the password against stored credentials and controlling the error release based on verification results, thereby preventing direct password exposure while enabling authorized operations

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If engine output limiting control is released without proper treatment verification, then work productivity is restored, but non-purified exhaust gas may be emitted to the atmosphere

Engineering Contradiction:

Improvework vehicle outputVSAvoidexhaust gas emission

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The system incorporates feedback mechanisms that monitor the exhaust gas treatment system status before allowing error release. The control unit verifies that the system is in a safe state and that purification functions are operational before restoring full engine output, thus preventing harmful emissions while enabling productivity recovery

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system applies preliminary anti-action by implementing output limiting control as a preventive measure when errors are detected. This control prevents harmful emissions by restricting engine power until the exhaust gas treatment system is verified to be functioning properly, thereby counteracting potential environmental harm before it occurs

Inventive Principle:

Principle #9Preliminary anti-action

3Ease of operation

If a simple password system is used for error release, then ease of operation is improved, but security against unauthorized access deteriorates

Engineering Contradiction:

Improveerror release processVSAvoidaccess security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system replaces simple mechanical password entry with an electronic authentication mechanism. The control unit electronically verifies service passwords and manages error release permissions, providing both ease of operation through automated verification and enhanced security through encrypted credential storage and comparison

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9353669B2Error releasing device for work vehicle and error releasing method for work vehicle

Publication Date: 2016.05.31 KOMATSU LTD

AI summary

An error releasing device for a work vehicle to release an error related to an exhaust gas treatment system when the error related to the exhaust gas treatment system has occurred includes: an input unit configured to input at least temporary input information; an authentication unit including a processing algorithm common with a processing algorithm of an external device that generates the temporary input information, and configured to authenticate the input temporary input information by using the processing algorithm; and an error release processing unit configured to release the error related to the exhaust gas treatment system when the temporary input information acquired from the external device by using inquiry information obtained through a predetermined operating procedure is input and further the temporary input information is authenticated by the authentication unit.