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Blog Entry# 2354715
Posted: Jul 16 2017 (22:05)
10 Responses
Last Response: Aug 07 2017 (00:14)
10 Responses
Last Response: Aug 07 2017 (00:14)
Do you feel any difference while travelling in a diesel loco hauled train and an electric hauled one? If so how, please comment .......
5 Posts
simple difference is on moving on dloco one cant see the posts.....
other one is one can feel chugging with pause at 40 kmph /notching when we go in dloco......
also with help of loco horns one can judge the loco.....
also dloco takes sometime to reach mps when compared to e loco.....
other one is one can feel chugging with pause at 40 kmph /notching when we go in dloco......
also with help of loco horns one can judge the loco.....
also dloco takes sometime to reach mps when compared to e loco.....
The smoke and chugging sounds ( The sound of an airplane in case of the EMDs) set aside, I don't observe much difference during a regular run. The ALCO's do give a cruising feel when they are switching motor configurations, but for the most part, there I don't feel any difference in the ride quality. Acceleration is definitely more rapid for the electric locos, but unless the LP is notching up aggressively, the difference there too isn't much.
Agree with your first 2 points. :)
But the diesel engine of the locomotive does not show any effect on the ride quality for the diesel-electric locos. The transmission is electric in all mainline ALCO's and EMD's. Stray vibrations etc in the motion of the diesel engine pistons are not directly transmitted to the traction motors as they are not mechanically connected, particularly so in case of the EMD's as they have an AC-AC transmission. But it does result in a less rapid acceleration as there is a limit on the current the on-board generator/alternator can supply.
But the diesel engine of the locomotive does not show any effect on the ride quality for the diesel-electric locos. The transmission is electric in all mainline ALCO's and EMD's. Stray vibrations etc in the motion of the diesel engine pistons are not directly transmitted to the traction motors as they are not mechanically connected, particularly so in case of the EMD's as they have an AC-AC transmission. But it does result in a less rapid acceleration as there is a limit on the current the on-board generator/alternator can supply.
* Rightly said sir, vibrations of diesel engine are directly transmitted to the mechanically coupled electric generator and not to the coaches where paxs are seated.
* The difference in ride quality is mainly felt when train starts from rest when loco demands huge power to overcome the huge static friction of stationary train. Eloco can smoothly overdraw more electric power from huge reservoir of power available through OHE lines at those few crucial moments and diesel loco could not get that from its diesel generation set. This cause a little bit of jerking effect. Similarly a little jerk is felt when LP some times tries to suddenly accelerate the late running train when speed restriction zone ends during a run....
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* The difference in ride quality is mainly felt when train starts from rest when loco demands huge power to overcome the huge static friction of stationary train. Eloco can smoothly overdraw more electric power from huge reservoir of power available through OHE lines at those few crucial moments and diesel loco could not get that from its diesel generation set. This cause a little bit of jerking effect. Similarly a little jerk is felt when LP some times tries to suddenly accelerate the late running train when speed restriction zone ends during a run....
more...
Electric locos are smoother than dloco acceleration me bhi eloco smoother hai means jerk nahi lagta