Download pdf - CASE HISTORY - Molinari Rail AG · 2019-05-14 · Locomotive bogies for GE Transportation Special challenge – 3-axle locomotive bogie In December 2010, Molinari was awarded the

Locomotive bogies for GE Transportation

Special challenge – 3-axle locomotive bogieIn December 2010, Molinari was awarded the

contract for developing a concept for mod-

ular bogies on the basis of the previously engi-

neered bogie for UK.

Following a positive assessment of the con-

cept by GE Transportation, Molinari was also

commissioned with the detailed design.

Molinari was responsible for:

• Detailed assessment of requirements

from European standards

• Configuration of coupling elements

according to the requirements of

dynamic behavior

• Definition of the interface with the

locomotive’s underframe

• Dynamic behavior simulation

• FEM stability calculation

• Detailed design except for wheel sets

and traction motors

• Supply of welded bogie frames

• Static and fatigue limit testing on one

bogie frame

• Support for tests on finished locomotives

Technical data for locomotive • GE Type PH37ACai «PowerHaul»

• Axle sequence: Co’Co‘

• Capacity: 2750 kW

• Max. speed: 120 km/h

• Starting tractive effort: 540 kN

• Weight: 120 - 132 t

• Axle load: 20 - 22 t

Special requirements• Weight savings

• Lower production costs

• Better negotiation of curves

• Easy adaptation to different track

widths and axle distances

• Possible enhancement for

higher speeds

• Compliance with TSI and corre-

sponding standards (EN and UIC)

• Reduction of shear forces through

hydraulic cross coupling

Molinari Rail AGMerkurstrasse 25

8400 Winterthur · Switzerland

Phone +41 52 320 60 60

Fax +41 52 320 60 61

[email protected]

Successful implementation of specificationsThe 3-axle bogie designed by Molinari comply

with all contractual and regulatory require-

ments. The locomotives are approved in the

respective country of destination.

Compliance with the various national regula-

tions and the installation of antennae and

sensor for the various train protection sys-

tems represents a particular challenge. In

addition, maximum shear force is reduced to

less than 60 kN through the installation of a

hydraulic cross coupling.

Molinari Rail delivers the installation-ready

bogie frames as well as the crash compo-

nents to GE.

CASE HISTORY

03.2019/250

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