Idle State Display Section for Engine Load Monitoring
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Solution Overview
Problem
Existing display devices for work machines like hydraulic excavators do not effectively inform operators about fuel-efficient engine load states, particularly during idle conditions, leading to inefficient fuel usage.
Innovation Solution
A display device with an idle state display section that shows engine load information when the machine is not being manipulated, using low-idle and high-idle display sections that illuminate based on engine revolution speed, prompting operators to minimize engine load and transition to a fuel-efficient state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If fuel consumption information is displayed only during manipulation periods, then the display device structure remains simple, but operators cannot recognize engine load status during idle periods and thus cannot transition to fuel-efficient states
Solution Approach 1:
The display device is segmented into two distinct display sections: an idle state display section for displaying engine load information during idle periods, and an operating state display section for displaying fuel consumption information during manipulation periods. This segmentation allows the device to provide targeted information for different operational states without requiring a single complex display system to handle all scenarios simultaneously.
2Loss of energy
If the display device provides comprehensive fuel consumption information, then operators can monitor fuel usage, but the device fails to specifically address idle state fuel waste which accounts for significant fuel consumption
Solution Approach 1:
The idle state display section provides localized, state-specific information about engine load during idle periods, rather than displaying general fuel consumption data. This local quality approach ensures that operators receive precisely the information needed for idle state fuel efficiency (engine load status) without being overwhelmed by unrelated operational data.
3Ease of operation
If the display device shows detailed operating parameters continuously, then operators have complete information, but the display becomes cluttered and operators cannot quickly recognize the current state
Solution Approach 1:
The display device dynamically switches between different display modes based on the operational state: during idle periods, the idle state display section shows engine load information; during manipulation periods, the operating state display section shows fuel consumption information. This dynamic adaptation ensures that only relevant information is displayed at any given time, maintaining clarity while preserving comprehensive information coverage.
Data Source
AI summary
Disclosed is a display device 5 for a work machine having an engine 9, a hydraulic pump 10 driven by the engine, a boom cylinder 3d, an arm cylinder 3e, a bucket cylinder 3f, and other actuators driven by a hydraulic fluid supplied from the hydraulic pump 10, and an operating device 6 for operating the actuators 3d, 3e, 3f. The display device 5 includes an idle state display section 50a for displaying an engine revolution speed N as no-manipulation period operating state information which is related to an engine load that is imposed while the operating device 6 is not manipulated. This makes it possible to inform an operator of the status of the engine load in an idle state for the purpose of prompting the operator to transition into a fuel-efficient state.