Air Brakes - Additional Features
#11
Posted 28 July 2016 - 12:37 AM
Given the above, it can be reasonably assumed that the figures for steam usage of ejectors in various MSTS eng files can be taken as about right. On that basis the other figures for the vac system in MSTS files should not be far from what is required.
#12
Posted 08 August 2016 - 08:46 PM
To enable this capability the following parameter must be entered into the ENG file.
TrainPipeLeakRate ( 0.0833 )
The default unit of measure is psi/s. Other units can be bar/s, inHg/s or kPa/s.
Normally the train air pipe leakage rate accepted by most railways was around 5psi/min.
In most brake positions the air leakage will be replaced instantaneously with air from the main reservoir to maintain the set pressure. However, in older braking systems, such as the A6ET system, the train brake pipe was isolated from the main reservoir when in the LAP position, and thus the pressure in the brake pipe could reduce, thus applying the brakes.
Most modern locomotive brake systems had a self-lap position which maintained the set brake pipe pressure regardless of the train pipe leakage.
#13
Posted 09 August 2016 - 02:41 AM
I found a bug when in options the language set to Czech language, then pipe leakage is from main reservoir but not from brake pipe.
Please fix that.
#14
Posted 09 August 2016 - 02:54 AM
Icik, on 09 August 2016 - 02:41 AM, said:
Can you please explain why you think that there is a bug.
Depending upon the brake controller setting, train pipe leakage will cause the main reservoir to drop in pressure over time.
What symptoms are you getting?
Thanks
#15
Posted 09 August 2016 - 03:11 AM
When I set the language to Czech, the leakage is just from main reservoir (controller is also in lap position). Compressor is on, triple_valve is in release position.
#16
Posted 09 August 2016 - 03:41 AM
#17
Posted 09 August 2016 - 08:31 AM
Edit: The leak parameter is a good parameter as it is but issue I see is a change in BP performance keeping at same rate as the equalizing reservoir unless Main Res leaks under BP. Controlling units not equipped should use previous Brake code or simply fix an revert the BP performance since leaks work mainly with Main Res leaking? Leak parameter just comes into effect when in controlled equipped unit an not trail units equipped which should come into effect also.
#18
Posted 09 August 2016 - 11:00 PM
Icik, on 09 August 2016 - 03:41 AM, said:
Ok, I can see the problem, and will look to do a patch shortly to fix it.
ATW, on 09 August 2016 - 08:31 AM, said:
I don't quite understand.
It should only apply once along the length of the train, and not multiple times for each locomotive. The leakage figure quoted of 5psi/min is for the total train length regardless of length.
Is this a double headed train?
Can you describe the scenario and the problem that you are seeing so that I can attempt to duplicate the issue.
Thanks for the feedback.
#19
Posted 10 August 2016 - 02:17 AM
I am starting OR with locomotive and wagons in explore mode. When uncoupled any wagon OR always crased in Windows.
I am testing in version 3601.
Here my Openlog.

Number of downloads: 726
#20
Posted 10 August 2016 - 05:32 AM
hroch, on 10 August 2016 - 02:17 AM, said:

I had a similar problem recently.
If I disconnect a wagon, ORTS crashes.
Because I was busy with the "size" of my locomotive (other problem), I found out that if the value of "InertiaTensor" was smaller than in "size", this was caused. (?)
After the value was made equal (or higher), the problem was over.
example
Size ( 3.2m 3.896m 16.13m )
InertiaTensor ( Box ( 3.2m 3.99738m 15.0m ) )
to
Size ( 3.2m 3.896m 16.13m )
InertiaTensor ( Box ( 3.2m 3.896m 16.13m ) )
Perhaps an bug, or it should be so?
Maybe also your problem?
#21
Posted 10 August 2016 - 08:20 AM
steamer_ctn, on 09 August 2016 - 11:00 PM, said:
I don't quite understand.
It should only apply once along the length of the train, and not multiple times for each locomotive. The leakage figure quoted of 5psi/min is for the total train length regardless of length.
Is this a double headed train?
Can you describe the scenario and the problem that you are seeing so that I can attempt to duplicate the issue.
Thanks for the feedback.
I got video footage but will upload later but I can point to something as a tip to see the problem an difference.
Use steps bellow using X3586 & then X3902
1. Run the default Dash 9 on a long huge freight train close to at least 7000 feet.
2. Release the train brakes completely charged 90PSI.
3. Set them back up to continues service putting the handle quickly to it an watch both how the EQ/ER an BP perform even when you release them.
You should see what I mean unless I get the video uploaded when I get home of both experimental test videos with option "Correct questionable braking parameters" un checked in English.
With or without parameters in Engine section using ORTSBrakePipeTimeFactor or ORTSBrakeServiceTimeFactor I don't get the delay time like before.
#22
Posted 10 August 2016 - 06:31 PM
#23
Posted 11 August 2016 - 05:46 AM
X3586 BP/ER Test
X3602 BP/ER Test
#24
Posted 11 August 2016 - 06:29 AM
#25
Posted 11 August 2016 - 07:27 AM