The engine of Howrah-New Jalpaiguri Shatabdi Express detached near Jaugram station in Burdwan district on Howrah-Burdwan section of Eastern Railway on Friday.The engine travelled 250 metres after the coupling separated from the bogies at 4:00 pm but the driver reversed it and joined the train, an eastern railway spokesman said. None of the passengers was hurt. The train was detained for some time as a consequence.