SØNDAG
2026-10-04
The Cloudy Brain

Too many projects, too many ideas, too few hours — one learning a day anyway

Virtual fuel consumption

part of Maracaibo

Fuel-flow measurement for engines that have no flow sensor.

Twin 1960s diesels, no flow sensors, and no desire to cut into fuel lines. Instead: a model estimates burn from engine RPM using a cubic propeller-law curve, then calibrates itself against reality every time the tank level visibly drops — solving for the scale and idle-baseline that make the model match the measured fuel actually consumed. Estimated data is always labeled estimated; it never pretends to be a measurement.

CODElast 26 weeks · all-time 14 commits · +3k−242 lines
  • Calibrates only at rest, remembers last good
  • Self-healing MQTT after broker restarts
  • Fuel rate only while engines run; deployed
  • Self-calibrating fuel-flow estimator for twin diesels
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