Class 185 technical data.

[Quantumspotter]

Hello again all...

I am hoping someone on here may work for or have a technical working understanding of Transpennine Express class 185's. My question is this, does the class 185 model have a speed dependent engine cut off? My understanding is that the units have an operational speed of the design speed plus 10%. So I see that has 110mph. I have been told that the engines shut down at 103mph as a 'safety aspect.' That to me anyhow, seems a little dangerous especially on stretches of the ECML. I would therefore be interested in know anyone thoughts on this.

Kind regards.

Quantumapotter.

 

[43096]

Hello again all...

I am hoping someone on here may work for or have a technical working understanding of Transpennine Express class 185's. My question is this, does the class 185 model have a speed dependent engine cut off? My understanding is that the units have an operational speed of the design speed plus 10%. So I see that has 110mph. I have been told that the engines shut down at 103mph as a 'safety aspect.' That to me anyhow, seems a little dangerous especially on stretches of the ECML. I would therefore be interested in know anyone thoughts on this.

Kind regards.

Quantumapotter.

The engines will not shut down, but return to idle until a lower speed is reached (probably around 95-97mph) at which point traction power will become available again.

 

[Jonny]

Hello again all...

I am hoping someone on here may work for or have a technical working understanding of Transpennine Express class 185's. My question is this, does the class 185 model have a speed dependent engine cut off? My understanding is that the units have an operational speed of the design speed plus 10%. So I see that has 110mph. I have been told that the engines shut down at 103mph as a 'safety aspect.' That to me anyhow, seems a little dangerous especially on stretches of the ECML. I would therefore be interested in know anyone thoughts on this.

Kind regards.

Quantumapotter.

Even in the worst case scenario that a train 'stalls', there would still be the protection provided by block signals. Therefore, trains behind would come to a stop safely; the railway is not like the roads in that regard.

 

[PennineSuperb]

The engines are limited to 103mph, this is to avoid speeding and cuts traction power. The engines simply return to idle. It is just like a limiter on a truck. This will then prevent the Driver from taking power until the train reaches between 95-97mph.

 

[Quantumspotter]

Hello all.

Does the engine cut off still work if the driver is having issues with the units TMS system?

Kind regards.

Quantumspotter.

 

[hexagon789]

Hello all.

Does the engine cut off still work if the driver is having issues with the units TMS system?

Kind regards.

Quantumspotter.

170s don't have a TMS (to make the compatible with earlier Sprinter classes).

These have an overspeed cut-out which reverts the engines to idle of speed goes above 103mph, power cannot be re-applied until the Traction/Brake Controller (TBC) is returned to OFF and speed falls below 97mph.

I would imagine 185s are set up similarly, in that the overspeed is not integrated with the TMS.

 

[PennineSuperb]

The Overspeed is not integrated with the TMS.