Diesel Automation Solutions

Standby fuel often sits in a tank for months between uses, and that is exactly the condition in which it degrades. Condensation puts water into the tank; at the diesel/water interface, microbes (the "diesel bug") grow into a sludge that blocks filters and corrodes tanks. Modern low-sulphur and biodiesel-blended fuels are more prone to it, and the result is a set that cranks but starves — a fuel failure misdiagnosed as an engine fault.

The defences are design and maintenance together: keep tanks full to limit condensation, water-separating filters, periodic fuel testing, and fuel polishing — circulating the stored fuel through filtration and water-separation to keep it clean and dry. On critical sites we automate polishing so the fuel is conditioned on a schedule without anyone remembering to do it.

Fuel system architecture is usually a bulk tank (the strategic store) feeding a smaller day tank at the engine, with an automatic transfer pump keeping the day tank topped up and the engine's return managed. Sizing the storage means deciding the autonomy — how many hours the set must run on stored fuel before a refuel is realistic — which depends on how remote the site is and how reliable diesel deliveries are. A hospital or a remote mast needs far more autonomy than a city office with a fuel station nearby.

The storage must also be safe and legal: properly bunded (a containment volume around the tank to catch a leak), vented, and protected against theft — fuel theft from standby tanks is a real and costly problem in Kenya, which is one reason level telemetry (below) pays for itself.

The fuel problems that strand a generator — a slowly emptying tank, a leak, overnight theft, a transfer pump that stopped — are invisible until the set fails to run. Level and leak telemetry turns that around: tank level, consumption rate and alarms are sent to a dashboard, so a falling level or an abnormal overnight drop (theft) is flagged immediately. For multi-site fleets this means head office sees every tank's state at a glance instead of discovering an empty tank during a blackout.

Combined with the controller telemetry on the electrical side, this gives a complete picture of standby readiness — fuel and machine together — which is the foundation of genuine predictive maintenance rather than reactive call-outs.

For larger and multi-set installations the fuel and engine automation are designed as one plant: automatic day-tank fill, scheduled fuel polishing, low-level and leak interlocks that protect the engine and the environment, and (where warranted) auto-refuel ordering triggered by level. The aim is a plant that maintains its own readiness and only calls a human when a real decision is needed.

This is the difference between a generator that is "installed" and a standby plant that is genuinely managed — the same philosophy we apply to the electrical controls, extended to the fuel that ultimately decides whether the set runs.