Start powers the ECM (lamp test), cranks, synchronises on the speed sensors and injects.
Governor
Speed demand 700 rpm (idle)
Live data (what the ECM reads and commands)
Fuel command arbitration
The ECM takes the lowest of these limits every firing event; the highlighted row is in control now.
Last 30 s
Three separate scales: engine speed, fuelling per stroke, boost. Hover or drag for values.
Injection timing — one engine cycle (720°)
What this is
A representative, reference-informed model of a modern 10.8 L in-line six diesel in the class of the Cummins QSM11, with its electronic control module (ECM), running on an eddy-current absorber in a test cell. It is an educational model, not an OEM digital twin, and is not affiliated with or endorsed by Cummins.
From published data
- 10.8 L displacement, 125 mm bore × 147 mm stroke, 6 cylinders in-line, 4-stroke
- Single cylinder head, 4 valves per cylinder, turbocharged and aftercooled
- Rotation counter-clockwise facing the flywheel
- Published envelope 1475 × 1081 × 1039 mm, dry weight 1118 kg (model envelope: —)
- Electronic fuel control (CELECT / Quantum system; later engines use a CM570-class ECM)
- Cummins in-line six firing order 1-5-3-6-2-4
Illustrative (not OEM data)
- Part shapes, sensor positions, rod length, valve timing and lift
- Fuel map, governor gains, air/fuel limit, derate and shutdown thresholds (rating shown ≈ 300 kW at 2100 rpm)
- Turbo, thermal and oil-pressure models; thermal time constants are shortened so overheating happens in seconds
- Diagnostic codes use standard SAE J1939 SPN/FMI numbers, not a manufacturer fault-code list
Controls
- Drag to orbit, pinch or scroll to zoom, right-drag or two-finger drag to pan
- Tap a part or a sensor label for a description and live value
- C cutaway · S signal flow · Space start/stop · R reset view
Credits
Rendering: three.js r186 (MIT). All geometry, textures, lighting environment and sound are generated in the page; no external assets or network requests.
Sources: Cummins QSM11 brochure (DirectIndustry), Wikipedia “Cummins M-series engine”, SAE J1939-73 FMI definitions.