AIRCRAFT ENGINE VARIABLES

The table below indicates the properties for the Simulation Variables that can be used to get and set properties related to the engines of an aircraft. For information on the units listed for each variable, please see here: Simulation Variable Units

NOTE: When Microsoft Flight Simulator is running in multiplayer mode, only a small number of variables are communicated between aircraft. Those variables that are available will say so in the description as being either for "All Aircraft" or for "Shared Cockpit". Also note that in the multiplayer "Shared Cockpit" mode the only supported index is 1, which means that the data is assumed to be identical for all engines.

 

You can find a complete index of all available SimVars here: SimVar Index

 

Simulation Variable Description Units Settable
BLEED AIR ENGINE:index Returns whether or not the indexed engine (see note) attempts to provide bleed air. Bool
BLEED AIR SOURCE CONTROL:index

The bleed air system source controller for an indexed engine (see note). This will work as follows:

  • When engines and APU are activated, it will return 0 because it is in Auto.
  • If the APU is removed, it will return 3 for engines only.
  • If instead the engines are removed, it would return 2 for the APU only.
  • If the APU and engines are removed, it would return 1 (so, off).

Enum:

  1. 0 = auto
  2. 1 = off
  3. 2 = apu
  4. 3 = engines
COWL FLAPS Deprecated, do not use! Percent Over 100
ENGINE CONTROL SELECT Selected engines (combination of bit flags)

Flags:

  1. 1 = Engine 1
  2. 2 = Engine 2
  3. 4 = Engine 3
  4. 8 = Engine 4
ENGINE MIXURE AVAILABLE

True if engine mixture is available for prop engines. Deprecated, do not use (mixture is always available)!

 Bool
ENGINE PRIMER The engine primer position. Position
ENGINE TYPE Engine type.

Enum:

  1. 0 = Piston
  2. 1 = Jet
  3. 2 = None
  4. 3 = Helo(Bell) turbine
  5. 4 = Unsupported
  6. 5 = Turboprop
ENG ANTI ICE:index Anti-ice switch for the indexed engine (see note), true if enabled false otherwise.

Bool
ENG COMBUSTION:index True if the indexed engine (see note) is running, false otherwise. Bool
ENG CYLINDER HEAD TEMPERATURE:index The indexed engine (see note) cylinder head temperature.

Rankine
ENG EXHAUST GAS TEMPERATURE:index Exhaust gas temperature for the indexed engine (see note).

Rankine
ENG EXHAUST GAS TEMPERATURE GES:index Governed engine setting exhaust gas temperature for the indexed engine (see note).

Percent Over 100
ENG FAILED:index Failure flag for the indexed engine (see note) that has failed. Bool
ENG FUEL FLOW BUG POSITION:index Fuel flow reference in pounds per hour for the indexed engine (see note).

Pounds per hour
ENG FUEL FLOW GPH:index Engine fuel flow in gallons per hour for the indexed engine (see note).

Gallons per hour
ENG FUEL FLOW PPH:index The indexed engine (see note) fuel flow in pounds per hour. Pounds per hour
ENG FUEL FLOW PPH SSL:index

Engine fuel flow in pounds per hour.

Deprecated in favour of ENG FUEL FLOW PPH.

 Pounds per hour
ENG HYDRAULIC PRESSURE:index The indexed engine (see note) hydraulic pressure.

Pounds per square foot (psf)
ENG HYDRAULIC QUANTITY:index The indexed engine (see note)hydraulic fluid quantity, as a percentage of total capacity Percent Over 100
ENG MANIFOLD PRESSURE:index The indexed engine (see note) manifold pressure.

Inches of mercury (inHg)
ENG MAX RPM The indexed engine (see note) Maximum rpm. RPM
ENG N1 RPM:index The indexed engine (see note) N1 rpm.

RPM

(0 to 16384 = 0 to 100%)
ENG N2 RPM:index The indexed engine (see note) N2 rpm.

RPM

(0 to 16384 = 0 to 100%)
ENG OIL PRESSURE:index The indexed engine (see note) oil pressure.

pounds per square foot (psf)
ENG OIL QUANTITY:index The indexed engine (see note) oil quantity as a percentage of full capacity.

Percent Over 100
ENG OIL TEMPERATURE:index The indexed engine (see note) oil temperature.

Rankine
ENG ON FIRE:index The indexed engine (see note) on fire state.

Bool
ENG PRESSURE RATIO:index The indexed engine (see note) pressure ratio.

Ratio
(0-16384)
ENG PRESSURE RATIO GES:index Engine pressure ratio. Deprecated, do not use! Scalar
ENG RPM ANIMATION PERCENT:index

The indexed engine (see note) percentage maximum rated rpm - used for visual animation.

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

 Percent
ENG RPM SCALER:index RPM scalar value. Deprecated, do not use!

Scalar
ENG TORQUE:index The indexed engine (see note) torque.

Foot pounds
ENG VIBRATION:index The indexed engine (see note) vibration.

Number
ESTIMATED FUEL FLOW:index Estimated fuel flow to the indexed engine (see note) at cruise speed. Pounds per hour
FULL THROTTLE THRUST TO WEIGHT RATIO Full throttle thrust to weight ratio Number
GENERAL ENG ANTI ICE POSITION:index The indexed engine (see note) anti-ice switch state - 0 (FALSE) is off and 1 (TRUE) is on.

Bool
GENERAL ENG COMBUSTION:index

Set the indexed engine (see note) combustion flag to TRUE or FALSE. Note that this will not only stop all combustion, but it will also set the engine RPM to 0, regardless of the actual state of the simulation.

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

Bool
GENERAL ENG COMBUSTION EX1:index This SimVar is similar to GENERAL ENG COMBUSTION, in that it can also be used to enable or disable engine combustion. However this SimVar will not interfere with the current state of ths simulation. For example, if the aircraft has a turbine engine with auto_ignition enabled or it's a propeller engine with magnetos, then in the subsequent simulation frames this SimVar may be set to 1 (TRUE) again as the engine restarts automatically. Bool
GENERAL ENG COMBUSTION SOUND PERCENT:index

Percent of maximum sound being created by the indexed engine (see note).

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

Percent
GENERAL ENG DAMAGE PERCENT:index Percent of total damage to the indexed engine (see note).

Percent
GENERAL ENG ELAPSED TIME:index Total elapsed time since the indexed engine (see note) was started.

Hours
GENERAL ENG EXHAUST GAS TEMPERATURE:index The indexed engine (see note) exhaust gas temperature.

Rankine
GENERAL ENG FAILED:index The indexed engine (see note) fail flag.

Bool
GENERAL ENG FIRE DETECTED:index Detects if a fire has been detected in an indexed engine (see note) or not. If 0 (FALSE) no fire has been detected and if 1 (TRUE) then it has.

Bool
GENERAL ENG FUEL PRESSURE:index The indexed engine (see note) fuel pressure.

Pounds per square inch (psi
GENERAL ENG FUEL PUMP ON:index Whether the indexed engine (see note) fuel pump on (1, TRUE) or off (0, FALSE).

Bool
GENERAL ENG FUEL PUMP SWITCH:index

Fuel pump switch state the indexed engine (see note). If 0 (FALSE) the pump is off and if 1 (TRUE) then it is on.

Bool

GENERAL ENG FUEL PUMP SWITCH EX1:index

 Equivalent to GENERAL ENG FUEL PUMP SWITCH but differentiates between ON and AUTO

Bool

  
GENERAL ENG FUEL USED SINCE START:index Fuel used since the indexed engine (see note) was last started. Pounds
GENERAL ENG FUEL VALVE:index

Fuel valve state for the indexed engine (see note). If 0 (FALSE) then the valve is closed and if 1 (TRUE) then it is open.

Bool
GENERAL ENG GENERATOR ACTIVE:index Settable alternator (generator) on/off switch for the indexed engine (see note).

Bool
GENERAL ENG GENERATOR SWITCH:index Alternator (generator) on/off switch state for the indexed engine (see note).

Bool
GENERAL ENG HOBBS ELAPSED TIME:index This can be used to find the time since the indexed engine (see note) started running. Similar to ElapsedTachometerTime, this records the time the engine has been running, but instead of taking a % of the time based on the Pct/RPM this takes the full time, but only if a threshold RPM/speed is reached. You can set the thresholds using the accumulated_time_hobbs_min_pct_rpm
and accumulated_time_hobbs_min_knots parameters in the [GENERALENGINEDATA] section of the engines.cfg file.		 Seconds
GENERAL ENG MASTER ALTERNATOR The alternator switch for a specific engine. Requires an engine index (1 - 4) when used. Bool
GENERAL ENG MAX REACHED RPM:index Maximum attained rpm for the indexed engine (see note). RPM
GENERAL ENG MIXTURE LEVER POSITION:index

Percent of max mixture lever position for the indexed engine (see note).

Percent
GENERAL ENG OIL LEAKED PERCENT:index Percent of max oil capacity leaked for the indexed engine (see note).

Percent
GENERAL ENG OIL PRESSURE:index The indexed engine (see note) oil pressure.

Psf
GENERAL ENG OIL TEMPERATURE:index The indexed engine (see note) oil temperature. Rankine
GENERAL ENG PCT MAX RPM:index

Percent of max rated rpm for the indexed engine (see note).

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

 Percent
GENERAL ENG PROPELLER LEVER POSITION:index

Percent of max prop lever position for the indexed engine (see note).

Percent
GENERAL ENG REVERSE THRUST ENGAGED This will return 1 (TRUE) if the reverse thruster is engaged, or 0 (FALSE) otherwise. Bool
GENERAL ENG RPM:index

The RPM for an indexed engine (see note).

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

 RPM
GENERAL ENG STARTER:index The indexed engine (see note) starter on/off state.

Bool
GENERAL ENG STARTER ACTIVE:index

True if the indexed engine (see note) starter is active.

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

 Bool
GENERAL ENG THROTTLE LEVER POSITION:index

Percent of max throttle position for the indexed engine (see note). The lower limit will be clamped to the value set for min_throttle_limit.

Percent
GENERAL ENG THROTTLE MANAGED MODE:index Current mode of the managed throttle for the indexed engine (see note).

Number
MASTER IGNITION SWITCH Aircraft master ignition switch (grounds all engines magnetos).

Bool
MAX EGT The maximum EGT, as set using the egt_peak_temperature parameter in the engines.cfg file. Rankine
MAX OIL TEMPERATURE The maximum oil temperature, as set using the parameter oil_temp_heating_constant in the engines.cfg file. Rankine
MAX RATED ENGINE RPM Maximum rated rpm for the indexed engine (see note). RPM
NUMBER OF ENGINES Number of engines (minimum 0, maximum 4)

Number
OIL AMOUNT Deprecated, do not use! FS7 Oil Quantity
(Deprecated)
PANEL AUTO FEATHER SWITCH:index Auto-feather arming switch for the indexed engine (see note). Please see the Note On Autofeathering for more information.

Bool
PROP AUTO CRUISE ACTIVE True if prop auto cruise active Bool
PROP AUTO FEATHER ARMED:index Auto-feather armed state for the indexed engine (see note).

Bool
PROP BETA:index The "prop beta" is the pitch of the blades of the propeller, and this can be used to retrieve the current pitch setting, per indexed engine (see note).

Radians
PROP BETA FORCED ACTIVE This can be used to enable the propeller forced beta mode (1, TRUE) or disable it (0, FALSE), when being written to. When being read from, it will return TRUE (1) if the forced beta mode is enabled or FALSE (0) if it isn't. When enabled, the PROP BETA FORCED POSITION value will be used to drive the prop beta, while the internal coded simulation logic is used when this is disabled. Bool
PROP BETA FORCED POSITION Get or set the beta at which the prop is forced. Only valid when PROP BETA FORCED ACTIVE is TRUE (1). Radians
PROP BETA MAX The "prop beta" is the pitch of the blades of the propeller. This retrieves the maximum possible pitch value for all engines. Radians
PROP BETA MIN The "prop beta" is the pitch of the blades of the propeller. This retrieves the minimum possible pitch value for all engines. Radians
PROP BETA MIN REVERSE The "prop beta" is the pitch of the blades of the propeller. This retrieves the minimum possible pitch value when the propeller is in reverse for all engines. Radians
PROP DEICE SWITCH:index True if prop deice switch on for the indexed engine (see note).

Bool
PROP FEATHERED:index This will return the feathered state of the propeller for an indexed engine (see note). The state is either feathered (true) or not (false).

Bool
PROP FEATHERING INHIBIT:index Feathering inhibit flag for the indexed engine (see note).

Bool
PROP FEATHER SWITCH:index Prop feather switch for the indexed engine (see note).

Bool
PROP MAX RPM PERCENT:index

Percent of max rated rpm for the indexed engine (see note).

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

 Percent
PROP ROTATION ANGLE

Prop rotation angle.

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

 Radians
PROP RPM:index Propeller rpm for the indexed engine (see note). RPM
PROP SYNC ACTIVE:index True if prop sync is active the indexed engine (see note).

Bool
PROP SYNC DELTA LEVER:index Corrected prop correction input on slaved engine for the indexed engine (see note).

Position
PROP THRUST:index

Propeller thrust for the indexed engine (see note).

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

Pounds
PROPELLER ADVANCED SELECTION Deprecated, do not use!

Enum

(Deprecated)
SHUTOFF VALVE PULLED This checks if the shutoff valve to the engine has been pulled (true) or not (false). When pulled piston engines will be blocked from getting any fuel. Bool
THROTTLE LOWER LIMIT Percent throttle defining lower limit (negative for reverse thrust equipped airplanes). This will be the value defined for the min_throttle_limit parameter.

Percent
TURB ENG AFTERBURNER:index

Afterburner state for the indexed engine (see note).

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

 Bool
TURB ENG AFTERBURNER PCT ACTIVE:index

The percentage that the afterburner is running at.

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

 Percent Over 100
TURB ENG AFTERBURNER STAGE ACTIVE:index

The stage of the afterburner, or 0 if the afterburner is not active.

NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer.

Number
TURB ENG BLEED AIR:index Bleed air pressure for the indexed engine (see note). Pounds per square inch (psi
TURB ENG COMMANDED N1:index

Effective commanded N1 for the indexed turbine engine (see note).

Percent
TURB ENG CONDITION LEVER POSITION:index

When the throttle is on idle position, this sets the condition levers to one of 3 positions to define the idle N1 target for the indexed engine (see note):

  • Down position is the cut-off position that cuts the fuel to the engine, effectively shutting down the engine.
  • Middle position requires N1 to reach the low idle value when throttle is in idle position (low idle value can be checked using the TURB_ENG_LOW_IDLE SimVar).
  • High position requires N1 to reach the high idle value when throttle is in idle position (high idle value can be checked using the TURB_ENG_HIGH_IDLE SimVar).

Note that this option requires several settings from the engines.cfg file to be set to specific values before working correctly:

Enum:

  1. 0 = fuel cut-off
  2. 1 = low idle
  3. 2 = high idle
TURB ENG CORRECTED FF:index Corrected fuel flow for the indexed engine (see note).

Pounds per hour
TURB ENG CORRECTED N1:index

The indexed turbine engine (see note) corrected N1.

Percent
TURB ENG CORRECTED N2:index

The indexed turbine engine (see note) corrected N2.

Percent
TURB ENG FREE TURBINE TORQUE:index The amount of free torque for the indexed turbine engine (see note).

Foot Pound
TURB ENG FUEL AVAILABLE:index True if fuel is available for the indexed engine (see note).

Bool
TURB ENG FUEL EFFICIENCY LOSS:index This is used to control the fuel efficiency loss of the indexed engine, from 0 - no fuel efficiency loss - to 100 - double the fuel consumption. Percent
TURB ENG FUEL FLOW PPH:index The indexed engine (see note) fuel flow rate.

Pounds per hour
TURB ENG HIGH IDLE:index Retrieves the high idle N1 value to be reached by the the indexed turboprop engine (see note) with throttle in idle position and condition lever in high idle position (condition lever position can be checked or set using the TURB_ENG_CONDITION_LEVER_POSITION SimVar). Percent
TURB ENG IGNITION SWITCH:index True if the the indexed turbine engine (see note) ignition switch is on. Bool
TURB ENG IGNITION SWITCH EX1:index Position of the the indexed turbine engine (see note) Ignition Switch. Similar to TURB_ENG_IGNITION_SWITCH but differentiates between ON and AUTO.

Enum:

  1. 0 = OFF
  2. 1 = AUTO
  3. 2 = ON
TURB ENG IS IGNITING:index Whether or not the ignition system is currently running for the indexed engine (see note). Depends on TURB_ENG_IGNITION_SWITCH_EX1 Enum, the cfg var ignition_auto_type and current state of the plane. Bool
TURB ENG ITT:index Retrieve or set the ITT for the indexed engine (see note). Rankine
TURB ENG ITT COOLING EFFICIENCY LOSS:index This is used to control the ITT cooling efficiency loss of the indexed engine, from 0 - no cooling efficiency loss - to 100 -engine recieves no ITT cooling. Percent
TURB ENG JET THRUST:index The indexed engine (see note) jet thrust.

Pounds
TURB ENG LOW IDLE:index Retrieves the low idle N1 value to be reached by the the indexed turboprop engine (see note) with throttle in idle position and condition lever in low idle position (condition lever position can be checked or set using the TURB_ENG_CONDITION_LEVER_POSITION SimVar). Percent
TURB ENG MASTER STARTER SWITCH True if the turbine engine master starter switch is on, false otherwise. Bool
TURB ENG MAX TORQUE PERCENT:index Percent of max rated torque for the indexed engine (see note).

Percent
TURB ENG N1:index

The indexed turbine engine (see note) N1 value.

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

Percent
TURB ENG N1 LOSS:index This is used to control the N1 loss of the indexed engine, from 0 - no N1 loss - to 100 - 100% N1 loss. Percent
TURB ENG N2:index

The indexed turbine engine (see note) N2 value.

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

Percent
TURB ENG NUM TANKS USED:index Number of tanks currently being used by the indexed engine (see note).

Number
TURB ENG PRESSURE RATIO:index The indexed engine (see note) pressure ratio.

Ratio
TURB ENG PRIMARY NOZZLE PERCENT:index Percent thrust of primary nozzle for the indexed engine (see note).

Percent Over 100
TURB ENG REVERSE NOZZLE PERCENT:index

Percent thrust reverser nozzles deployed for the indexed engine (see note).

NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer.

Percent
TURB ENG TANKS USED:index Fuel tanks used by the indexed engine (see note), one or more of the following bit flags:
  1. Center 1 Bit 0
  2. Center 2 Bit 1
  3. Center 3 Bit 2
  4. Left Main Bit 3
  5. Left Aux Bit 4
  6. Left Tip Bit 5
  7. Right Main Bit 6
  8. Right Aux Bit 7
  9. Right Tip Bit 8
  10. External 1 Bit 9
  11. External 2 Bit 10

Mask
TURB ENG TANK SELECTOR:index Fuel tank selected for the indexed engine (see note). See Fuel Tank Selection for a list of values.

Enum
TURB ENG THROTTLE COMMANDED N1:index

The indexed turbine engine (see note) commanded N1 for current throttle position.

Percent
TURB ENG THRUST EFFICIENCY LOSS:index This can be used to control the thrust efficiency loss of the indexed engine, where a value of 0 is 100% of available thrust, and 100 is 0% available thrust. Percent
TURB ENG VIBRATION:index The indexed turbine engine (see note) vibration value.

Number
TURB MAX ITT Retrieve the itt_peak_temperature as set in the engines.cfg file. Rankine

 

NOTE: Many of the SimVars listed above require an engine index. This is a value between 1 and 16 that signals which of the engines on the aircraft is being targeted to get or set the value for the SimVar.

 

 

Reciprical (Piston) Engine Vars

The following SimVars are only valid for piston engines:

 

Simulation Variable Description Units Settable
RECIP CARBURETOR TEMPERATURE:index Carburetor temperature the indexed engine (see note). Celsius

RECIP ENG ALTERNATE AIR POSITION:index

 Alternate air control the indexed engine (see note).

Position
RECIP ENG ANTIDETONATION TANK MAX QUANTITY:index The maximum quantity of water/methanol mixture in the ADI tank for the indexed engine (see note). This value is set as part of the [ANTIDETONATION_SYSTEM.N] section in the aircraft configuration files. Gallons
RECIP ENG ANTIDETONATION TANK QUANTITY:index The quantity of water/methanol mixture currently in the ADI tank for the indexed engine (see note). Gallons
RECIP ENG ANTIDETONATION TANK VALVE:index The status of the ADI tank valve for the indexed engine (see note). Bool
RECIP ENG ANTIDETONATION FLOW RATE:index This gives the actual flow rate of the Anti Detonation system for the indexed engine (see note). Gallons per hour
RECIP ENG BRAKE POWER:index Brake power produced by the indexed engine (see note).

Foot pounds (ftlbs) per second
RECIP ENG COOLANT RESERVOIR PERCENT:index Percent coolant available for the indexed engine (see note).

Percent
RECIP ENG COWL FLAP POSITION:index

Percent cowl flap opened for the indexed engine (see note).

Percent
RECIP ENG CYLINDER HEAD TEMPERATURE:index Engine cylinder head temperature for the indexed engine (see note).

Celsius
RECIP ENG CYLINDER HEALTH:index Index high 16 bits is engine number, low16 cylinder number, both indexed from 1. Percent Over 100
RECIP ENG DETONATING:index Set to 1 (TRUE) if the indexed engine (see note) is detonating. Bool
RECIP ENG EMERGENCY BOOST ACTIVE:index Whether emergency boost is active (1, TRUE) or not (0, FALSE) for the indexed engine (see note).

Bool
RECIP ENG EMERGENCY BOOST ELAPSED TIME:index

The elapsed time that emergency boost has been active on the indexed engine (see note). The timer will start when boost is first activated.

IMPORTANT! This timer does not reset. So if you set your time limit in the engines.cfg file to 315s and you spend 2 minutes with boost active, then pull back on the throttle for 1 minute, then engage boost again for 2 minutes, the simulation will consider that you spent 4 minutes with boost active. The 1 minute pause is not taken into account.

Hours
RECIP ENG ENGINE MASTER SWITCH:index Whether or not the Engine Master switch is active on an indexed engine (see note). Bool
RECIP ENG FUEL AVAILABLE:index True if fuel is available for the indexed engine (see note).

Bool
RECIP ENG FUEL FLOW:index The indexed engine (see note) fuel flow.

Pounds per hour
RECIP ENG FUEL NUMBER TANKS USED:index Number of tanks currently being used by the indexed engine (see note).

Number
RECIP ENG FUEL TANKS USED:index Fuel tanks used by the indexed engine (see note), one or more of the following bit flags:
  1. Center 1 Bit 0
  2. Center 2 Bit 1
  3. Center 3 Bit 2
  4. Left Main Bit 3
  5. Left Aux Bit 4
  6. Left Tip Bit 5
  7. Right Main Bit 6
  8. Right Aux Bit 7
  9. Right Tip Bit 8
  10. External 1 Bit 9
  11. External 2 Bit 10

Mask
RECIP ENG FUEL TANK SELECTOR:index Fuel tank selected for the indexed engine (see note). See Fuel Tank Selection for a list of values.

Enum
RECIP ENG GLOW PLUG ACTIVE:index Whether or not the Glow Plug is active on the indexed engine (see note).. Bool
RECIP ENG LEFT MAGNETO:index

Left magneto state for the indexed engine (see note).

Bool
RECIP ENG MANIFOLD PRESSURE:index The indexed engine (see note) manifold pressure. Pounds per square inch (psi
RECIP ENG NITROUS TANK MAX QUANTITY:index The maximum quantity of nitrous permitted per indexed engine (see note). Gallons
RECIP ENG NITROUS TANK QUANTITY:index The quantity of nitrous per indexed engine (see note). Gallons
RECIP ENG NITROUS TANK VALVE The statte of the nitrous tank valve for the indexed engine (see note). Either 1 (TRUE) for open or 0 (FALSE) for closed. Bool
RECIP ENG NUM CYLINDERS:index The number of cylinders for the indexed engine (see note). Number
RECIP ENG NUM CYLINDERS FAILED:index The number of cylinders that have failed in the indexed engine (see note). Number
RECIP ENG PRIMER:index The indexed engine (see note) primer state.

Bool
RECIP ENG RADIATOR TEMPERATURE:index The indexed engine (see note) radiator temperature.

Celsius
RECIP ENG RIGHT MAGNETO:index

The indexed engine (see note) right magneto state.

Bool
RECIP ENG STARTER TORQUE:index Torque produced by the indexed engine (see note).

Foot pound
RECIP ENG SUPERCHARGER ACTIVE GEAR:index Returns which of the supercharger gears is engaged for the indexed engine (see note). Number
RECIP ENG TURBINE INLET TEMPERATURE:index The indexed engine (see note) turbine inlet temperature.

Celsius
RECIP ENG TURBOCHARGER FAILED:index The indexed engine (see note) turbo failed state.

Bool
RECIP ENG WASTEGATE POSITION:index When the engines.cfg parameter turbocharged is TRUE, this SimVar will return the percentage that the turbo waste gate is closed for the indexed engine (see note). If the turbocharged variable is FALSE and the manifold_pressure_regulator parameter is TRUE, then this will return the percentage that the manifold pressure regulator is closed for the indexed engine.

Percent
RECIP MAX CHT This will return the cylinder head temperature value set by the cht_heating_constant parameter in the engines.cfg file. Rankine
RECIP MIXTURE RATIO:index Fuel / Air mixture ratio for the indexed engine (see note). Ratio

 

 

Fuel Tank Selection

Number Description
0 Off
1 All
2 Left
3 Right
4 Left auxiliary
5 Right auxiliary
6 Center
7 Center2
8 Center3
9 External1
10 External2
11 Right tip
12 Left tip
13 Crossfeed
14 Crossfeed left to right
15 Crossfeed right to left
16 Both
17 External
18 Isolate
19 Left main
20 Right main