The case record
Open-pit mining · Northern Africa
Identified opportunity across a working fleet
5-12% identified
What did emissions-based maintenance identify on a northern Africa open-pit mining fleet?
At an open-pit commodity mine operation in northern Africa, Emissions-Based Maintenance identified 5-12% across 14 units with 0 OEM fault codes present. The engines were running and the dashboards were clear while the exhaust showed fuel being wasted. The figure is identified opportunity, reported gross, not realized, and scoped to this deployment alone, never blended into a portfolio total.
An open-pit commodity mine operation in northern Africa. 5 to 12% identified across 14 Cummins QSK50 units.
0 OEM fault codes present. Identified across 14 units.
Common questions
Reading this case, answered.
- What do the case studies measure?
- Revealiency's case record documents real Emissions-Based Maintenance deployments and reports identified opportunity gross, not realized. Every figure is case-scoped to that deployment and never blended into a portfolio total. Each manual test is taken after fault codes are cleared, so zero OEM fault codes present is operator-attested across the entire set.
- How should I read the savings figures?
- Every figure in the case record is identified opportunity, reported gross, not realized, and scoped to its own deployment. Fuel recovery is framed as a 5 to 7% target band, never an average and never guaranteed. Verified entries are labeled verified; everything else is identified opportunity confirmed on the operator's actual engines.
- Can EBM find fuel waste with no fault code?
- Yes, and the case record proves it. Every deployment identified fuel waste in engines showing zero OEM fault codes present. The fault code does not know anything is wrong, because it only fires after a problem crosses a controller threshold. Emissions-Based Maintenance reads the exhaust chemistry directly and finds the waste the dashboard never reports.
- What engines does the method cover?
- Emissions-Based Maintenance is OEM-agnostic. Its baselines are calibrated against 32,000+ EPA-certified engines from 200+ manufacturers, spanning model years 1996 to 2027 across EPA Tier 2 through Tier 4. It is validated across Caterpillar, Cummins, MTU, EMD, and John Deere engines, roughly 150 HP to 3,000+ HP, so it fits the mixed fleet in the yard today.
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Eight years, seventy-six vehicles, the record that started it