DF7G diesel shunting locomotive is mainly used for marshalling and shunting operations in large and medium sized marshalling yards, and large industrial and mining companies, as well as district transfer. It is equipped with 12V240ZJ diesel engine, with AC-DC as main transmission and AC as auxiliary transmission. The main alternator employs brushless excitation and axle-hung rolling bearing structure is used for motor assembly. The locomotive employs microcomputer control system and dynamic braking equipment.
Basic locomotive parameters:
1.
Purpose: marshalling and shunting operations in large and medium sized marshalling yards, and large industrial and mining companies.
2.
Transmission mode: AC-DC transmission
3.
Axle arrangement: Co-Co
4.
Gage: 1435mm
5.
Wheel diameter: 1050mm
6.
Locomotive configuration: 19400 mm ×3250mm×4753mm
7.
Minimum curvature radius negotiated: 100m
8.
Locomotive weight with full service: 138 ±3％t
9.
Axle load: 23 ±3％t
10.
Locomotive speed:
Maximum speed: 100km/h
Maximum constant power speed: 95km/h
Continuous speed: 15.8km/h
11.
Locomotive tractive effort at wheel rim
Maximum starting tractive effort: 435kN
Continuous tractive effort: 317kN
12.
Fuel tank capacity: 6000L
13.
Total oil volume: 850kg
14.
Total water volume: 1100kg
15.
Total sand volume: 500kg
16.
Coupler type: TB/T1594-96 coupler (top operation)
17.
Coupler center line height: 880±10mm
18.
Diesel engine model: 12V240ZJ
19.
Maximum service power of the engine: 1850kW
