@@ -1141,58 +1141,6 @@ with the ``ORTSTractionMotorType ( AC ) `` parameter, to be inserted in the Engi
11411141section of the ENG file. The use of this motor will have an impact on wheel slip,
11421142because the wheel speed never exceeds the frequency of the rotating magnetic field.
11431143
1144- Traction force retardation
1145- ''''''''''''''''''''''''''
1146-
1147- .. index::
1148- single: ORTSTractiveForceRampUpRate
1149- single: ORTSTractiveForceRampDownRate
1150- single: ORTSTractiveForceRampDownToZeroRate
1151- single: ORTSDynamicBrakeForceRampUpRate
1152- single: ORTSDynamicBrakeForceRampDownRate
1153- single: ORTSDynamicBrakeForceRampDownToZeroRate
1154- single: ORTSDelayTimeBeforeUpdating
1155-
1156- When the driver sets full throttle, the control electronics may not apply the full
1157- tractive force instantly, but it will instead linearly apply force until reaching
1158- the target demand. This can be tuned both for traction and dynamic braking by inserting
1159- ``ORTSTractiveForceRampUpRate ``, ``ORTSTractiveForceRampDownRate ``,
1160- ``ORTSTractiveForceRampDownToZeroRate ``, ``ORTSDynamicBrakeForceRampUpRate ``,
1161- ``ORTSDynamicBrakeForceRampDownRate `` and ``ORTSDynamicBrakeForceRampDownToZeroRate ``
1162- in the .eng file. The value of each parameter determines the force increase/decrease
1163- rate in one second.
1164-
1165- Example::
1166-
1167- Engine (
1168- ORTSTractiveForceRampUpRate ( 50kN )
1169- ORTSTractiveForceRampDownRate ( 50kN )
1170- ORTSTractiveForceRampDownToZeroRate ( 100kN )
1171- ORTSDynamicBrakeForceRampUpRate ( 70kN )
1172- ORTSDynamicBrakeForceRampDownRate ( 50kN )
1173- ORTSDynamicBrakeForceRampDownToZeroRate ( 50kN )
1174- )
1175-
1176- Another possibility to avoid sudden variations in tractive force while the driver
1177- is moving the throttle, is to only update the throttle/brake demand when the lever
1178- has not been moved for a defined amount of time. This can be implemented using the
1179- ``ORTSDelayTimeBeforeUpdating ``, which has to be inserted for the desired
1180- controller in the ``EngineControllers `` block.
1181-
1182- Example::
1183-
1184- Engine (
1185- EngineControllers (
1186- Throttle ( 0 1 0.1 0
1187- NumNotches ( 0 )
1188- ORTSDelayTimeBeforeUpdating ( 0.5s )
1189- )
1190- Brake_Dynamic ( 0 1 0.1 0
1191- NumNotches ( 0 )
1192- ORTSDelayTimeBeforeUpdating ( 1s )
1193- )
1194- )
1195- )
11961144
11971145Steam Locomotives
11981146-----------------
@@ -2642,10 +2590,6 @@ behave exactly the same way as player controlled ones.
26422590
26432591.. _physics-braking :
26442592
2645- .. index ::
2646- single: BrakeSystemType
2647- single: BrakeEquipmentType
2648-
26492593Open Rails Braking
26502594==================
26512595
@@ -2683,15 +2627,13 @@ graduated release. It will also force graduated release of brakes in triple
26832627valves. This option should be unchecked, except for compatibility problems
26842628with old MSTS stock.
26852629
2686- The following brake types are implemented in OR. They can be selected using
2687- the ``Wagon(BrakeSystemType `` parameter:
2630+ The following brake types are implemented in OR:
26882631
2689- - Vacuum single pipe: ``BrakeSystemType ("Vacuum_single_pipe") ``
2690- - Air single-pipe: ``BrakeSystemType ("Air_single_pipe") ``
2691- - Air twin-pipe: ``BrakeSystemType ("Air_twin_pipe") ``
2692- - EP (Electro-pneumatic, twin-pipe): ``BrakeSystemType ("EP") ``
2693- - EP single-pipe: ``BrakeSystemType ("EP_single_pipe") ``
2694- - Single-transfer-pipe (air and vacuum): ``BrakeSystemType ("Air_piped") `` or ``BrakeSystemType ("Vacuum_piped") ``
2632+ - Vacuum single
2633+ - Air single-pipe
2634+ - Air twin-pipe
2635+ - EP (Electro-pneumatic)
2636+ - Single-transfer-pipe (air and vacuum)
26952637
26962638The operation of air single-pipe brakes is described in general below.
26972639
@@ -2716,19 +2658,17 @@ brake features.
27162658For EP brakes, two variants are available:
27172659
27182660- If ``Wagon(ORTSEPBrakeControlsBrakePipe `` is set to 0 (default situation),
2719- an electrical wire (application wire) provides simultaneous fast brake application
2720- along the train. Release time will be fast if standard air brake haven't been applied,
2721- otherwise air brakes will determine release time. Typically this system is present
2722- with Train Brake Controllers having an EP-only application section, followed by an
2723- air application portion which serves as a fallback system, or in combination with a
2724- solenoid valve that isolates the triple valve when EP brakes are operational.
2725-
2661+ an electrical wire (application wire) provides simultaneous fast brake application
2662+ along the train. Release time will be fast if standard air brake haven't been applied,
2663+ otherwise air brakes will determine release time. Typically this system is present
2664+ with Train Brake Controllers having an EP-only application section, followed by an
2665+ air application portion which serves as a fallback system.
27262666- If ``Wagon(ORTSEPBrakeControlsBrakePipe `` is set to 1, brake pipe is charged and discharged
2727- simultaneously at each car in the train, providing fast and uniform brake application and release.
2728- The locomotive instructs the cars to "charge" or "discharge" the brake pipe to reach
2729- a reference pressure. Standard triple valves or distributors will follow brake pipe variations
2730- actuating the cylinders. This system is sometimes called "UIC EP brake". It is typically the system
2731- used in high speed trains.
2667+ simultaneously at each car in the train, providing fast and uniform brake application and release.
2668+ The locomotive instructs the cars to "charge" or "discharge" the brake pipe to reach
2669+ a reference pressure. Standard triple valves or distributors will follow brake pipe variations
2670+ actuating the cylinders. This system is sometimes called "UIC EP brake". It is typically the system
2671+ used in high speed trains.
27322672
27332673.. _physics-brake-controller :
27342674
@@ -3440,12 +3380,10 @@ MaxAuxilaryChargingRate and EmergencyResChargingRate.
34403380 single: ORTSBrakeEmergencyTimeFactor
34413381 single: ORTSBrakePipeTimeFactor
34423382 single: ORTSEPBrakeControlsBrakePipe
3443- single: ORTSEPBrakeInhibitsTripleValve
34443383 single: ORTSCompressorIsMuControlled
34453384 single: Supply_Reservoir
34463385 single: ORTSSupplyResCapacity
34473386 single: ORTSSupplyResChargingRate
3448- single: Emergency_Solenoid_Valve
34493387
34503388- ``Wagon(BrakePipeVolume `` -- Volume of car's brake pipe in cubic feet
34513389 (default .5).
@@ -3518,8 +3456,6 @@ MaxAuxilaryChargingRate and EmergencyResChargingRate.
35183456 by the brake system.
35193457- ``Wagon(ORTSEPBrakeControlsBrakePipe `` -- Set to 1 for UIC EP brake: brake pipe
35203458 pressure is electrically controlled at every fitted car.
3521- - ``Wagon(ORTSEPBrakeInhibitsTripleValve `` -- Set to 1 if the car is fitted with a
3522- selector valve that ignores brake pipe pressure when EP brakes are operational.
35233459- ``Wagon(ORTSBrakeRelayValveRatio `` -- Determines the proportionality constant
35243460 between pressure as demanded by the triple valve and brake cylinder pressure.
35253461 This is achieved via a relay valve which sets BC pressure proportionally.
@@ -3598,7 +3534,7 @@ MaxAuxilaryChargingRate and EmergencyResChargingRate.
35983534- ``Wagon(ORTSInitialApplicationThreshold `` -- The pressure difference between
35993535 the brake pipe and auxiliary reservoir at which the triple valve will
36003536 change from release to apply (default 1 psi).
3601- - ``Wagon( BrakeEquipmentType(Supply_Reservoir `` -- Adds a supply reservoir to the
3537+ - ``BrakeEquipmentType(Supply_Reservoir `` -- Adds a supply reservoir to the
36023538 loco or wagon, which will constantly charge to the brake pipe pressure
36033539 or MR pipe (if equipped) pressure. If a supply reservoir is equipped,
36043540 supply res air will be used to pressurize the brake cylinders thru the relay
@@ -3635,10 +3571,6 @@ MaxAuxilaryChargingRate and EmergencyResChargingRate.
36353571 Pipe for twin pipe braking systems (default = Main Reservoir Pressure).
36363572- ``Engine(ORTSCompressorIsMuControlled `` -- Set to 1 if compressors from
36373573 all locomotives are synchronized.
3638- - ``Wagon(BrakeEquipmentType(Emergency_Solenoid_Valve `` -- Adds an
3639- electrically controlled valve that quickly applies maximum
3640- brake cylinder pressure during an emergency braking. Only available if the
3641- brake cylinder pressure is controlled using a relay valve.
36423574
36433575.. _physics-retainers :
36443576
0 commit comments