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Engine (oil, CHT, EGT)

Engine (oil, CHT, EGT)

Four small round instruments in one cell: oil pressure, oil temperature, cylinder head temperature and EGT, each in its own case with the aircraft's arcs and red lines. On a twin it can show engine 1, engine 2, or both side by side.

Modeled on
Four small round 2 1/4-inch engine instruments in one cell
Category
Engine and systems
Size
1 cell
Version
1.0 · 2026-10-19
Plan
Pro
Simulators
MSFS 2020 · MSFS 2024 · X-Plane 11 · X-Plane 12

Variants

Engine (oil, CHT, EGT): Engine 1

Engine 1v1.0

Twin only: the left engine

Picker, ENGINE: Engine 1

Engine (oil, CHT, EGT): Engine 2

Engine 2v1.0

Twin only: the right engine

Picker, ENGINE: Engine 2

Engine (oil, CHT, EGT): Both

Bothv1.0

Twin only: two half-size four-gauge sets side by side, numbered 1 and 2

Picker, ENGINE: Both

Features

  • OIL PRESS (PSI), OIL TEMP (°F), CYL HEAD (°F) and EGT (°F), each a small round gauge with a drop shadow
  • Green/yellow bands, red low arc and red line from the aircraft profile
  • Min, middle and max numbered on each dial
  • Twin: engine 1, engine 2, or both side by side
  • Red X when oil pressure or oil temperature is missing or stale
  • Realistic needles (Settings): spring and vibration
  • Night lighting: the face takes the panel's red flood light, the glareshield's warm light from above (stronger for instruments higher on the page) and its own light, a lamp hidden at the top of the case lighting the dial downward (Settings > Dimmers: Red flood light, Glareshield, Instruments (analog))

Your aircraft: All four scales, bands and red lines come from the profile's engine limits. Twins get the engine choice. A generic profile (an aircraft the Hub doesn't know) gets wide default scales with no bands or red lines (oil 0-150 PSI and 0-300 °F, CHT 100-500 °F, EGT 800-1,800 °F).

On the iPad

  • No knobs: a tap on the face asks to change the instrument

Settings

  • ENGINE (twin aircraft only): Engine 1, Engine 2, Both
  • Global: Realistic needles

Simulator data

What the Hub reads from the simulator for this instrument, and what the instrument sends back. Names are the simulators' own: MSFS SimVars and events, X-Plane datarefs and commands.

Reads

ValueMSFSX-Plane
Oil pressure, engine 1 (psi)GENERAL ENG OIL PRESSURE:1 (psi)sim/cockpit2/engine/indicators/oil_pressure_psi[0]
Oil temperature, engine 1 (degF)GENERAL ENG OIL TEMPERATURE:1 (fahrenheit)sim/cockpit2/engine/indicators/oil_temperature_deg_C[0]sim/aircraft/engine/acf_max_OILT
Cylinder head temperature, engine 1 (degF)RECIP ENG CYLINDER HEAD TEMPERATURE:1 (fahrenheit)sim/cockpit2/engine/indicators/CHT_deg_C[0]sim/aircraft/engine/acf_max_CHT
Exhaust gas temperature, engine 1 (degF)GENERAL ENG EXHAUST GAS TEMPERATURE:1 (fahrenheit)sim/cockpit2/engine/indicators/EGT_deg_C[0]sim/aircraft/engine/acf_max_EGT
Oil pressure, engine 2 (psi)GENERAL ENG OIL PRESSURE:2 (psi)sim/cockpit2/engine/indicators/oil_pressure_psi[1]
Oil temperature, engine 2 (degF)GENERAL ENG OIL TEMPERATURE:2 (fahrenheit)sim/cockpit2/engine/indicators/oil_temperature_deg_C[1]sim/aircraft/engine/acf_max_OILT
CHT, engine 2 (degF)RECIP ENG CYLINDER HEAD TEMPERATURE:2 (fahrenheit)sim/cockpit2/engine/indicators/CHT_deg_C[1]sim/aircraft/engine/acf_max_CHT
EGT, engine 2 (degF)GENERAL ENG EXHAUST GAS TEMPERATURE:2 (fahrenheit)sim/cockpit2/engine/indicators/EGT_deg_C[1]sim/aircraft/engine/acf_max_EGT

Add-on aircraft with their own systems may use other variables; the Hub reads the standard ones.

Changes

The instrument's version counts what its faces share (the case, the mechanism, the data, the sounds); a face's own version counts that face alone.

  • 1.0 2026-10-19
    • First numbered version.
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