A Study on Water-Induced Damage Severity on Diesel Engine Injection System Using Emulsified Diesel Fuels
- By exploiting the rail pressure sensor (RPS) measurements from a passenger car’s diesel engine, the effect of the effect of W/D emulsion fuels on the FIS was analyzed. This was done by investigating the spectral response of the signals over different W/D emulsions and varying engine speeds.
- The effect and damage severity of diesel emulsification on the injection system components were investigated and presented. A degradation/wear assessment was conducted for the injectors and necessary judgments/inference recorded for possible root causes and correlations between fuel conditions and engine performance.
- Extensive empirical and descriptive deductions are presented. The findings are expected to provide a reliable paradigm worth considering for CRD engine condition monitoring, failure diagnostics, improved engine design, and decision making.
2. Literature Review on Related Works
3. Theoretical Background
3.1. Common Rail Injection System
3.2. Spectral Condition Monitoring
4. Materials and Methods
5. Experimental Results and Discussions
5.1. Injection System Failure Investigation
5.2. CR System Empirical Analysis
6. Concluding Remarks
- We can grasp the behavior of the injection system through FFT and PSD analysis of the CR pressure signals;
- If the water content exceeds 10% or the engine speed exceeds 1500 RPM, it may have a fatal adverse effect on the injection system;
- The amount of back-leak of the injectors was found to be (4 to 10) , which is a state in which repair and inspection are required due to the deterioration of the injector’s performance;
- The cause of the failure of the injection system was confirmed to be the wear of the valve piston, nozzle needle, and ball seat of the injector;
- Wear of injector parts due to emulsified fuel with water is projected to result from metal oxidation, cavitation, and reduction in lubricity.
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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|Car Model||Engine Type||Bore × Stroke (mm)||Maximum Power||Maximum Torque (Nm/RPM)||Compression Ratio||Fuel Injection||Aspiration|
|KIA Sorento 2004||In-line, Four (4)||91 × 96||138 hp @3800 RPM||343 Nm @ 1900 RPM||17.6||Common Rail||Turbocharged, inter-cooled|
|Kinematic Viscosity (cSt) at 10 °C||6.24||9.478||9.49||9.52||9.71||10.01||10.61|
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Kim, M.-S.; Akpudo, U.E.; Hur, J.-W. A Study on Water-Induced Damage Severity on Diesel Engine Injection System Using Emulsified Diesel Fuels. Electronics 2021, 10, 2285. https://doi.org/10.3390/electronics10182285
Kim M-S, Akpudo UE, Hur J-W. A Study on Water-Induced Damage Severity on Diesel Engine Injection System Using Emulsified Diesel Fuels. Electronics. 2021; 10(18):2285. https://doi.org/10.3390/electronics10182285Chicago/Turabian Style
Kim, Min-Seop, Ugochukwu Ejike Akpudo, and Jang-Wook Hur. 2021. "A Study on Water-Induced Damage Severity on Diesel Engine Injection System Using Emulsified Diesel Fuels" Electronics 10, no. 18: 2285. https://doi.org/10.3390/electronics10182285