[copperpen]

Thanks to a prod from Peter I have found how to get it working. This is now what I am using

BrakeEquipmentType( EP_Brake )
BrakeSystemType( EP )
MaxBrakeForce ( 30kN )

MaxReleaseRate( 20 )
MaxApplicationRate( 10 )
MaxAuxilaryChargingRate( 40.0 )
EmergencyResCapacity( "1.5*^3" )
MaxReleaseRate( 50.0 )
MaxApplicationRate( 50.0 )
MaxAuxilaryChargingRate( 20.0 )
EmergencyResCapacity( "1.5*^3" )
EmergencyResChargingRate( 20.0 )
EmergencyBrakeResMaxPressure( 90.0 )
BrakeCylinderPressureForMaxBrakeBrakeForce( 50.0 )

The rest remaining as before.

Note the first two lines. Still shows in the info page as 2P though.

[gpz]

copperpen, on 16 July 2015 - 12:47 PM, said:

Note the first two lines. Still shows in the info page as 2P though.

I'm afraid something is still wrong. I answered in the other thread.

[Coolhand101]

copperpen, on 16 July 2015 - 12:47 PM, said:

Thanks to a prod from Peter I have found how to get it working. This is now what I am using

BrakeEquipmentType( EP_Brake )
BrakeSystemType( EP )
MaxBrakeForce ( 30kN )

MaxReleaseRate( 20 )
MaxApplicationRate( 10 )
MaxAuxilaryChargingRate( 40.0 )
EmergencyResCapacity( "1.5*^3" )
MaxReleaseRate( 50.0 )
MaxApplicationRate( 50.0 )
MaxAuxilaryChargingRate( 20.0 )
EmergencyResCapacity( "1.5*^3" )
EmergencyResChargingRate( 20.0 )
EmergencyBrakeResMaxPressure( 90.0 )
BrakeCylinderPressureForMaxBrakeBrakeForce( 50.0 )

The rest remaining as before.

Note the first two lines. Still shows in the info page as 2P though.

Just for the record, your setup does show the EP in the brake info page, but as before, NO partial release!

[copperpen]

Reading up on EP brake systems there is no partial release. To reduce brake cylinder pressure, the brakes are released and then applied again.

[gpz]

It is not exactly precise. A common setting for an EP controller is that it is forced to stay in lap position by a spring. (E.g. the PBL type brake controllers.) The driver can either keep the lever in apply or release positions for a certain time, but when he releases the lever, it jumps back to lap position. So while technically there is no partial release lever position (neither is partial apply), the driver is able to control the release and apply levels by keeping the lever in a certain position only for a short time. There is no need to release fully and re-applying partially.

One can mimic such a controller with a following setup:

            Brake_Train ( 0 1 0.05 0
                NumNotches ( 3
                    Notch ( 0     0 TrainBrakesControllerReleaseStart )
                    Notch ( 0.05  1 TrainBrakesControllerEPApplyStart )
                    Notch ( 1.0   0 TrainBrakesControllerContinuousServiceStart )
                )
            )

[Kazareh]

copperpen, on 15 July 2015 - 09:33 AM, said:

We have Air Twin pipe and Air single pipe, both of which operate properly including self lapping where used.

We have Vacuum brakes which were the standard for most UK steam locomotives including the Flying Scotsman.

A relatively small number used the Westinghouse air system which was also used by EMUs until the advent of the EP brake which has had three varieties in the UK.

The problem with the Open rails EP brake system is that it just does not seem to work. The BP goes up and down as the brake handle is moved, but no pressure is applied via the brake cylinders.

Indeed, as I've noticed. :bigboss: I wonder why the code isn't working, though. peculiar it can elicit a response from BP, but BC pressure does zilch. Hm. Maybe something in the coding between the correlation of the two?

[copperpen]

The problem is fixed.

[disc]

I've just tried the default series 2000 EMU, and simply impossible to follow the timetable, as the EP brakes need at least 30 sec to recharge after a 25% braking. That wasn't like this before.
Which parameter sets the compressor charging rate in .eng?

[copperpen]

I use the option Brake pipe Charging rate on the General page of Options. It is currently set to 192PSI, this overrides the eng file settings. I I also use this in my brake control data block now


Brake Control block

comment (BrakeEquipmentType( Distributor ))
BrakeSystemType( EP )
MaxBrakeForce ( 30kN )

MaxReleaseRate( 30 )
MaxApplicationRate( 30 )
MaxAuxilaryChargingRate( 40.0 )
EmergencyResCapacity( "1.5*^3" ) --------------------------------------------speeds up release rates.
EmergencyResChargingRate( 20.0 )
EmergencyBrakeResMaxPressure( 90.0 )
BrakeCylinderPressureForMaxBrakeBrakeForce( 50.0 )

Brake Equipment block

AirBrakesAirCompressorPowerRating( 3.93 )
AirBrakesMainMinResAirPressure( 0 )
AirBrakesMainMaxAirPressure( 140 )
AirBrakesMainResVolume( 100 )
AirBrakesAirCompressorWattage( 19000 )
AirBrakesCompressorRestartPressure( 130 )
AirBrakesAirUsedPerPoundsOfBrakePipePressure( 0.27 )
AirBrakesHasLowPressureTest( 0 )
AirBrakesIsCompressorElectricOrMechanical( 0 )

EngineBrakesControllerDirectControlExponent( 1 )
EngineBrakesControllerMinPressureReduction( 7 )
TrainBrakesControllerMinPressureReduction( 1 )
TrainBrakesControllerHasProportionalBrake( 1 )

EngineBrakesControllerHasProportionalBrake( 1 )
EngineBrakesProportionalBrakeLag( -0.6 )
EngineBrakesControllerMaxApplicationRate( 7 )
TrainBrakesControllerMaxApplicationRate( 14 )
EngineBrakesControllerMaxReleaseRate( 14 )
TrainBrakesControllerMaxReleaseRate( 14 )
EngineBrakesControllerMinSystemPressure( 0 )
TrainBrakesControllerMinSystemPressure( 0 )
EngineBrakesControllerMaxSystemPressure( 110 )
TrainBrakesControllerMaxSystemPressure( 110 )
EngineBrakesControllerEmergencyBrakeTimePenalty( 60 )
EngineBrakesControllerFullServicePressureDrop( 32 )
TrainBrakesControllerEmergencyBrakeTimePenalty( 60 )
TrainBrakesControllerFullServicePressureDrop( 32 )

BrakesEngineBrakeType( "EP" )
BrakesTrainBrakeType( "EP" )
BrakesEngineControllers( "Train" )

Brake controller data------- The two different controller blocks give slightly different behaviour. Pick the one that best suits you.

comment ( Brake_Train ( 0 1 0.015 0.25
NumNotches ( 3
Notch ( 0 0 TrainBrakesControllerReleaseStart )
Notch ( 0.05 1 TrainBrakesControllerEPApplyStart )
Notch ( 1.0 0 TrainBrakesControllerContinuousServiceStart )
)
))

Brake_Train ( 0 1 0.015 0.3
NumNotches ( 5
Notch ( 0 0 TrainBrakesControllerReleaseStart )
Notch ( 0.01 1 TrainBrakesControllerEPApplyStart )
Notch ( 0.80 0 TrainBrakesControllerSelfLapStart )
Notch ( 0.90 0 TrainBrakesControllerApplyStart )
Notch ( 1 0 TrainBrakesControllerEmergencyStart )

)
)
The brake pipe pressure just about follows the controller in either direction

[disc]

Something is wrong. Before the graduated release fix, the series 2000 EMU brakes worked just like in MSTS, but now it takes 2-3 min to release a 100% brake, and nothing i could find to improve the brake line charging rate.