Combined Throttle / Train brake does not work

Bug #1160292 reported by Dennis A T
34
This bug affects 4 people
Affects Status Importance Assigned to Milestone
Open Rails
Fix Released
Low
Peter Gulyas

Bug Description

Bug 1093831 reported that combined throttle / dynamic brake controls did not work and this has been fixed.

There are many modern multiple units both diesel and electric where the throttle is combined with the train brake and this combination does not work in OR but does in MSTS - as described in the eng file reference doc.

Sample EMU with combined throttle / train brake - uktrainsim.com file number 8754
Sample DMU with combined throttle / train brake - uktrainsim.com file number 9128

The eng file reference also allows combined throttle / train brake / dynamic brake with auto blending of the train and dynamic brakes. This seems to work also in an experiment that I've tried on a commercial EMU model - Making Tracks Siemens Desiro Stock Pack Class 444. This unit in reality has throttle air and dynamic brakes auto blended although the model does not set this up. Setting this up as per the eng file reference results in the train still braking apparently correctly and the load meter reading negative current, as it should.

Tags: physics
Revision history for this message
Wayne Campbell (wayneinbc) wrote :

I am not clear on your last paragraph. Are you saying that ' combined throttle / train brake / dynamic brake with auto blending' works on OR, or does not work on OR and works on MSTS or does not work on MSTS?

Thanks

Changed in or:
status: New → Triaged
importance: Undecided → Low
milestone: none → 0.9
tags: added: physics
Revision history for this message
Dennis A T (dennisat) wrote :

"I am not clear on your last paragraph. Are you saying that ' combined throttle / train brake / dynamic brake with auto blending' works on OR, or does not work on OR and works on MSTS or does not work on MSTS?"

Sorry for the confusion, I'm saying that it works in MSTS but not on OR.

I was trying to illustrate that MSTS seems to allow quite complex setups for these controls.

cjakeman (cjakeman)
Changed in or:
assignee: nobody → cjakeman (cjakeman)
status: Triaged → In Progress
cjakeman (cjakeman)
Changed in or:
milestone: 0.9 → 1.0
Revision history for this message
Rippstein (ch-signale) wrote :

Look also Bug #1226592
The same Bug is described with the Engine Serie7000 of the Standard-MSTS Route Japan1
Eugen Rippstein

Revision history for this message
Alexander Ivanoff (northeastern292) wrote :

I'm adding Bug #1246065. Accidentally didn't realize we had an entry on this.

Also, with the combined power handle (throttle/train brake), I hope to see improved performance.

Revision history for this message
Rippstein (ch-signale) wrote :

The Engine Serie7000 of the Standard MSTS has a combined _Control (throttle/trainbrake)
When I push the lever in a brake-position, ORTS indicate in the cab, that he is using the dynamic brake.
BUT in the .eng-file doesn't exist any definition for the dynamic brake, so the brake doesn't work.
The definition of the Combined-Control in the .eng-file point to the trainbrake and not to the dynamic brake.
The engine work fine in MSTS!!!

Revision history for this message
Rippstein (ch-signale) wrote :

Definition in the series7000.eng file:

Combined_Control( 0 1 0.4 0.82 throttle train )

OR works only when the engine use the dynamic brake and here is written throttle dynamic

Revision history for this message
cjakeman (cjakeman) wrote :

Did lots of work on this and got something working but not polished enough to commit.

Happy for someone else to work on it. You're welcome to my code.

Changed in or:
status: In Progress → Triaged
assignee: cjakeman (cjakeman) → nobody
Revision history for this message
Peter Gulyas (pzgulyas) wrote :

But for anyone to continue your work, you must commit, or at least attach a patch. :)

Revision history for this message
Peter Gulyas (pzgulyas) wrote :

And describe the remaining problems, of course. Would be the best to simply commit, because after this nooune will be dare enogh for that. What wrong could happen? In worst case we will get some new bug reports about non-working specific parts, which will be easy to fix...

Revision history for this message
Peter Gulyas (pzgulyas) wrote :

Combined throttle + train brake is implemented in r2591.

Changed in or:
assignee: nobody → Peter Gulyas (pzgulyas)
status: Triaged → Fix Committed
James Ross (twpol)
Changed in or:
status: Fix Committed → Fix Released
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