Fuel Property Detection in Excavator Engines via Refueling Time Correlation
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Solution Overview
Problem
Existing fuel detection technologies in diesel engines for hydraulic excavators struggle to accurately distinguish between fuel property-related and engine main body-related abnormalities in engine operation parameters, leading to low determination accuracy.
Innovation Solution
A working machine monitoring system that includes an engine operation parameter acquisition module, a refueling time acquisition module, and a fuel property determination module, which compares the time of engine operation parameter changes with refueling time to determine if changes are due to fuel property, and adjusts engine output power and notifies operators if unsatisfactory fuel is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If engine operation parameters are monitored to detect fuel property, then fuel detection capability is improved, but accuracy in distinguishing fuel-related from engine-related abnormalities deteriorates
Solution Approach 1:
The system records refueling time information in advance before engine operation parameter changes occur. This preliminary recording of fuel supply timing enables the subsequent correlation analysis between refueling events and parameter changes, allowing the system to distinguish whether parameter deviations are caused by fuel properties or engine issues.
Solution Approach 2:
The system continuously monitors engine operation parameters and compares them against reference values while incorporating refueling time feedback. By analyzing the temporal relationship between refueling events and parameter deviations, the system can determine whether changes are fuel-related, thereby improving determination accuracy through feedback-based discrimination.
2Measurement precision
If refueling time information is recorded and compared with engine operation parameter changes, then determination accuracy is improved, but system complexity increases
Solution Approach 1:
The control unit performs multiple functions: it monitors engine operation parameters, records refueling time information, stores reference values, and executes determination logic. By consolidating these functions into a single control unit, the system achieves high determination accuracy without proportionally increasing overall system complexity.
Solution Approach 2:
The system uses its existing monitoring capabilities to simultaneously detect both engine operation parameters and refueling events. Rather than adding separate dedicated sensors, the control unit leverages its existing data acquisition functions to gather fuel-related information, thereby improving accuracy while minimizing additional complexity.
Data Source
AI summary
An object of the present invention is to provide a working machine and a working machine monitoring system using the same which is capable of improving the accuracy in determining fuel property. The working machine is provided with an engine operation parameter acquisition module (1041) that acquires an engine operation parameter representing the operation state of an engine mounted on the working machine; a refueling time acquisition module (1011) that acquires a refueling time when the working machine is supplied with fuel; and a fuel property determination module (1014) that determines the property of the fuel based on a comparison result of the time when the engine operation parameter changes, with the refueling time.