View source for CCG/Diesel Engine File Breakdown

==DIESEL ENGINE FILE BREAKDOWN==
'''kind'''  asset type

'''rem''' and ''';''' - comment lines, are no longer supported.. '''DO NOT USE..'''

'''flowsize''' ''rate of flow through pipes, generally leave these settings:''
 trainbrakepipe 170000
 epreservoirpipe 0.1
 no3pipe 0.1
 no4pipe 0.1
 auxreservoirvent 0.1
 auxreservoir_no3 0.1
 auxreservoir_trainbrakepipe 0.1
 autobrakecylindervent 0.1
 auxreservoir_autobrakecylinder 0.1
 equaliser_mainreservoir 0.06
 equaliservent 0.06
 equaliserventhandleoff 0.1
 equaliserventemergency 0.1
 no3pipevent 1.5
 no3pipe_mainreservoir 0.1
 compressor 10
 trainbrakepipe_reservoir 1
 trainbrakepipevent 0.06
 no3pipe_autobrakecylinder 0.1
 epreservoirpipe_autobrakecylinder 0.1
 mainreservoir_ep 0.1
 vacuumbrakepipe 0.1
 vacuumbrakepipereleasevent 0.1
 vacuumbrakepipevent 0.1
 vacuumbrakereservoir_vacuumbrakepipe 0.1
 vacuumbrakecylinder_vacuumbrakepipe 0.1
 highspeedexhauster_vacuumbrakepipe 0.1

'''volume'''  ''size of pipes and appliances.''

'''scale 1''' ''multiplies volume by given value, generally leave this setting.''

trainbrakepipe............................. 0.2 ''brake pipe volume''

epreservoirpipe ...........................0.2 ''For electro pneumatic braking - not currently in use, generally leave this setting''

no3pipe..................................... 0.2 ''Independent brake pipe''

no4pipe .....................................0.2 ''Bail pipe - not currently in use, generally leave this setting''

Auxreservoir................................0.0384678 ''Auxiliary reservoir volume.''

Autobrakecylinder........................ 0.00969387 ''Brake cylinder volume.''

vacuumbrakepipe .........................0

vacuumbrakecylinder.................... 0  ''For vacuum braking - not currently in use, generally leave this setting''


mainreservoir ..............................0.9 ''Main reservoir volume.''

equaliser ....................................0.5 ''Equalising reservoir volume''

independantbrakecylinder...............0.0103239 ''Loco brake cylinder volume.''


'''pressure''' ''Brake system pressures.''

'''scale 1''' ''Multiplies pressure by given value, generally leave this setting.''

compressor.................................0.00946941 ''(120psi expressed in grams/m³) Compressor maximum pressure.''

mainreservoir...............................0.00946941 ''Main reservoir maximum pressure''

highspeedexhauster .....................0 ''For vacuum braking - not currently in use, generally leave this setting''

brakepipe ...................................0.00736041 ''(80psi expressed in grams/m³) Brake pipe pressure when fully charged''

brakeinitial..................................0.00693861 ''(72psi expressed in grams/m³) Brake pipe pressure after initial service reduction (for self lapping brakes)''

brakefull .....................................0.0044992 ''(57psi expressed in grams/m³) Brake pipe pressure after full service reduction (for self lapping brakes)''

indbrakefull .................................0.005075 ''Brake cylinder pressure for independant brake service.''

trainbrakepipe_start .....................0.00553261 ''Brake pipe pressure on loading the game.''

epreservoirpipe_start ....................0 ''For electro pneumatic braking - not currently in use, generally leave this setting''

no3pipe_start ..............................0

no4pipe_start ..............................0 ''Generally leave these settings.''

auxreservoir_start.........................0.00553261 ''Auxiliary reservoir pressure on loading the game.''

autobrakecylinder_start .................0.00560291 ''Train brake cylinder pressure on loading the game.''

vacuumbrakepipe_start .................0

vacuumbrakereservoir_start ...........0

vacuumbrakecylinder_start .............0 ''For vacuum braking - not currently in use, generally leave this setting''

mainreservoir_start .......................0.00946941 ''(100psi expressed in grams/m³) Main Reservoir pressure on loading the game.''

equaliser_start ............................0.00553261 ''Equalising Reservoir pressure on loading the game.''

independantbrakecylinder_start ......0.00560291 ''Locomotive brake cylinder pressure on loading the game.''

'''mass'''

'''scale 1''' ''Multiplies fuel mass by given value, not currently in use, generally leave this setting.''

fuel ...........................................6.2156e+006 ''Fuel level, not currently in use, generally leave this setting.''

'''motor'''

resistance....................................1.7 ''Power figure for DCC, higher resistance value=less power''

adhesion .....................................2.5 ''Adhesion parameter, higher value=greater adhesion''

maxvoltage .................................600 ''Generally leave this setting''

maxspeed ...................................40 ''Maximum speed for DCC, expressed in metres per second.''

Brakeratio................................... 55000 ''Brake force for pressure reduction'' 

max-accel...................................3500

max-decel...................................9000 ''Parameters for DCC acceleration & deceleration.''

axle-count...................................4 ''Resistance axle count''

surface-area..............................80 ''Resistance surface area''

moving-friction-coefficient...............0 .03 ''Resistance moving friction''

air-drag-coefficient........................0.00017 ''Resistance air drag''

throttle-power  ... ''Acceleration variables in cabin mode.''
    1                            = notch number (1)
      {
        0            30
        5            25          = At speed 5, acceleration = 25
        10           15
        12           0
      }


dynamic-brake ... ''Deceleration variables while dynamic braking in cabin mode.''
    1                            = notch number (1)
      {
        1.333         0
        2            30
        5            25          = At speed 5, deceleration = 25
        10           15
        12            0
      }


Equalisation of Pressures There is a point at which no further brake pipe pressure reduction will result in increased braking effort, this is known as full application or equalisation of pressures.

Imagine you made a 26 psi reduction when operating a loco with a 90psi brake pipe. 90psi in the train pipe minus 26psi reduction equals 64 psi in the pipe. Due to the 2.5:1 ratio of auxiliary reservoir volume to brake cylinder volume, the 26 psi reduction puts 64 psi into the brake cylinder.

As the pressure in the reservoir and the pressure in the cylinder is now equal, no more air will flow into the brake cylinder; and making a further reduction in brake pipe pressure will have no effect on braking.

Equalisation occurs at different pressures, depending on the train pipe feed pressure. 
100 psi pipe (e.g. the UK locos - 7 bar) equalisation at 71 psi.
90 psi pipe (e.g. the US locos) equalisation at 64 psi.
72 psi pipe (e.g. French & Queensland locos) equalisation at 49 psi.

The easiest way to set your custom content to the desired brake pipe feed pressure is to copy the entire pressure section from the config of a loco that uses the pressure you desire.


'''Note''': Converting PSI to Grams /m cubed...
 e.g. 90psi...    (90+14.7)0.0000703        ''(add atmospheric pressure 14.7psi to get absolute pressure)''
                      = 104.7 x 0.0000703
                      = 0.00736041


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[[CCG/Kind: Engine|Kind: Engine]]

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