Solutions / An East African Country Infrastructure Construction
Mining & Construction
An East African Country Infrastructure Construction
Construction Diesel Source Purification
Key outcomes
- Ensuring Fuel Quality: Ensuring on-site diesel meets machinery operating standards
- Reduced Equipment Maintenance: Effectively reduces fuel system maintenance for construction equipment
- Reduced Engine Failures: Effectively reduces engine failures caused by fuel issues
Case Study
Stage 1 · Customer Problem
📋 Customer Problem
An overseas engineering contractor is undertaking multiple key infrastructure projects (ports, roads, and bridges) in the East African region. The project site operates a large fleet of excavators, cranes, graders, and other heavy-duty diesel equipment under conditions that threaten fuel quality:
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Unstable Source Fuel Quality
Diesel supplied by local vendors has significant quality fluctuations, and dust and impurities easily mix in during long-distance tanker truck transport.
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Rudimentary Storage Conditions
Construction sites typically use temporary ground-level oil tanks or oil drums, with relatively primitive storage conditions that allow ongoing contamination.
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Frequent Machinery Failures
Precision construction machinery is sensitive to fuel; unpurified diesel causes frequent injector nozzle blockage, engine black smoke, and power loss.
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Schedule Pressure
Equipment repair downtime directly affects project delivery milestones, with high delay costs on time-sensitive infrastructure contracts.
Stage 2 · Fuel Analysis · NEW
🔬 Fuel Analysis
Fuel sampling at the construction site's main storage tank and fueling vehicles revealed contamination from unstable vendor supply and long-distance tanker transport:
| Metric | Before Treatment | After Treatment | Improvement |
|---|
| ISO 4406 Cleanliness | ~23/21/18 | 14/12/9 | 4–5 levels ↑ |
| Free Water (ppm) | ~160 | ≤50 | 69% ↓ |
| Visual Appearance | Cloudy, dust-visible | Clear, transparent | — |
| TAN (mgKOH/g) | 0.18 | 0.08 | 56% ↓ |
| Particle Composition | Dust, transport debris, vendor-fuel impurities | ≥98% removed at ≥5 μm | 98% ↓ |
Values are representative based on East African construction site conditions (unstable local vendor supply, long-distance tanker transport, high-temperature dusty environment). Field testing confirmed visual clarity improvement and compliance with machinery operating standards.
Stage 3 · Solution
🛠️ Solution & System Configuration
The enterprise introduced 20 Jingyuan JY-T32A diesel filtration units, implementing a "source purification" gatekeeper strategy. Units are deployed at the main storage tank intake port and the construction site fueling vehicle's dispensing port, so all diesel undergoes JY-T32A treatment before entering machinery fuel tanks. The trolley/skid design enables flexible movement between construction sections.
Model
JY-T32A (Mobile Trolley/Skid)
Flow Rate
40 L/min (≈2.4 m³/h)
Membrane
Polymer Rigid Composite, 5 μm nominal
β Value
≥200 at rated pore size
Operating Pressure
0.2–0.4 MPa
Regeneration
Gas-pulse regeneration (brief 5-15 min safety pause)
Explosion-Proof
Industrial-grade enclosure (construction site)
Deployment
Storage tank intake + fueling vehicle dispensing port
Key design decisions: The oleophilic-hydrophobic polymer rigid composite membrane efficiently intercepts particulate impurities while synergistically removing trace free water, ensuring dispensed fuel is clear, transparent, and meets cleanliness standards. Multi-stage deep filtration intercepts fine particles, protecting machinery high-pressure fuel pumps. The mobile trolley/skid design allows flexible relocation between construction sections as work progresses.
Stage 4 · Results
📈 Quantified Results
20
Mobile Clean-Oil Stations
3×
Cartridge Life Extended
~60%
Engine Overhaul Reduction
| Metric | Before | After | Improvement |
|---|
| ISO 4406 Cleanliness | ~23/21/18 | 14/12/9 | 4–5 levels ↑ |
| Machinery Cartridge Replacement | Every 2–3 weeks | Effectively extended (~3×) | ~3× ↑ |
| Engine Overhaul (Fuel-Related) | Frequent incidents | Significantly reduced | ~60% ↓ |
| Injector Blockage / Black Smoke | Frequent | Rare | — |
| Project Schedule Impact | Downtime delays | On-track delivery | — |
After implementing "source purification," the project department effectively improved its fuel quality control capability. On-site feedback shows that the fuel cartridge replacement cycle for machinery has been effectively extended, and engine overhaul incidents caused by fuel issues have been significantly reduced. These 20 units act like 20 mobile "clean oil stations," ensuring efficient operation of hundreds of construction machines in high-temperature, dusty environments, effectively safeguarding project progress.
Stage 5 · Lessons Learned · NEW
💡 Lessons Learned
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Key Success Factor
The "source purification" gatekeeper strategy — deploying 20 mobile JY-T32A units at both the storage tank intake and the fueling vehicle dispensing port. By treating all diesel before it enters machinery tanks, contamination from unstable vendor fuel and long-distance transport is eliminated at the source rather than reactively managed downstream.
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Common Pitfall
Overseas contractors often accept fluctuating local fuel quality as unavoidable and rely on machinery built-in filters to cope. In high-temperature, dusty East African environments, this causes frequent injector blockage, black smoke, and power loss — and equipment repair downtime directly threatens project delivery milestones. Source purification shifts the burden from precision machinery to purpose-built membrane filtration.
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Replication Advice
Directly applicable to all overseas infrastructure contractors (ports, roads, bridges) operating in regions with unreliable local fuel supply. The mobile trolley/skid design allows units to relocate between construction sections as work progresses. For large multi-site projects, deploy one unit per fueling vehicle plus units at each main storage tank, scaling unit count with fleet size.
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Customer feedback
In overseas construction, the quality of local materials is often difficult to control, but fuel cannot be compromised. These 20 Jingyuan JY-T32A units gave us the capability to independently improve fuel quality. We turned local diesel into a reliable power source. This was a small investment that effectively protected our machinery fleet.
Mining & Construction
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