The TRIAX locomotive with its innovative articulated axle system is in fact the missing link between axle vehicles and bogie vehicles. Equipped with a diesel-electric transmission, the TRIAX locomotive with its three axles naturally fits into the tightest curves thanks to its two articulated end axles (passive or active system). Its high-powered engine and its architecture make it an ultra-versatile vehicle, capable of towing heavy loads in shunting yards or smaller convoys in line in the space of a shunter.
Presentation
Developed in-house for more than 10 years and confirmed by the production of a functional prototype, the TRIAX concept is CFD's answer to reconcile traction effort, compactness and dynamic track behaviour. Each axle has a dedicated traction motor giving it solid performance both at take-off and at high speed.
The axle articulation system designed by CFD allows for passage through very tight curves without damaging the track and for reaching high speeds (90 km/h or more) while maintaining good stability in straight lines, curves or on switches and crossings. The TRIAX configuration is such that the axles have a minimum angle with the rail in curves: The central axle is fixed in relation to the chassis. Each end axle is integral with a bissel which can pivot in relation to the bogie frame.
Perspective view CFD TRIAX locomotive
CFD TRIAX Locomotive Architecture
Perspective view TRIAX locomotive
Front View CFD TRIAX Locomotive
Axle steering control
The orientation of the bissel is carried out by a jack which positions the axle according to the curve of the track: It is the active guidance (System installed in option). The calculation of the ideal orientation of the bissel according to the track is then carried out by a processor following a software developed by CFD using the information coming from various sensors. In case of absence (or failure) of the guidance orientation system, a mechanical device positions correctly the bissels: It is the passive guidance.
Traction system
This vehicle is designed around CFD's direct current motor drive train. The DC drive train powers each of the three traction motors (one per axle). The system is very simple and allows exceptional take-off forces. The simplicity of the components, their robustness and ease of maintenance make this solution ideal for operations in harsh environments or isolated areas. The range of traction motors is based on proven DC locomotive series. Hybrid versions with on-board energy storage and catenary current collection will also be available in the near future.
- Up to 24.5 t (240 kN) of starting tractive effort
- 20 to 22 t per axle
- Clearance EN 15273-2
- Diesel power from 540 to 840 HP / 400 to 620 kW
- Maximum speed of 90 km/h or more
| Technologies | Continuous current |
| Traction motors | 3 x CFD DC C62 or equivalent |
| Traction motor power | 3 x 300 kW |
| Diesel engine | CAT or VOLVO Possible solutions especially with engines CUMMINS, LIEBHERR, DEUTZ, MTU, JOHN DEERE, SCANIA or others. |
| Starting tractive effort | 24.5t (240 kN) |
Power limitation
Each of the traction motors is designed for a continuous output power of 300 kW. The power limitation of the machine is therefore related to the power of the diesel engine that drives the generator. This results above all in a lower heating of the motors during traction phases and an exceptional durability.
Driver's cab
The driver's cab has been developed to be mounted on either TRIAX or BB locomotives with a design that offers excellent visibility from the driver's cab. It is equipped with diesel air conditioning and heating to warm up the diesel engine before starting it in cold weather. The side windows are based on an innovative concept allowing them to slide into the cab roof. The unobstructed opening allows the operator to have a wide view outside the cab and around the machine. A classic solution with sliding half windows is also available.
EQUIPMENT
- FUEL CELL
- 1000 or 1500L
- COMPRESSED AIR GENERATION
- 1800 L/min or 3600 L/min @ 10 bar
- BRAKE SYSTEMS
- UIC Pneumatic UIC (+ Rheostatic in option)
- OPTIONS
- GPS
Remote control
Slip control
Wheel slide protection
Dynamic braking
Cabin heater
Signalling equipment
Automatic couplers
Crash buffers
