Customers for SEELD systems

SEELD for Ludmilla BR-232

The current state of the locomotives from a technical point of view leads to high costs of transport, maintenance and fuel. The solution to reduce expenses is the technical adaptation of these locomotives to the actual operating conditions.

Tehmin Brasov proposes the following solutions for the economical operation of the locomotive, which once implemented can make the operation and maintenance predictable, simultaneously with cost optimization:

Reduction of idling time

– the third source of energy

The MDA (Auxiliary Diesel Engine – the third source of energy) completely takes over the functions of the MDT when the locomotive does not develop the traction regime, regardless of whether it is stationary or moving.
MDA ensures:

Keeping the diesel engine warm
Charging the batteries
Air compressor operation
Heating / air conditioning of the driver's cabin
Lighting and controls
Other low power auxiliary services

Reduction of operating hours of the MDT (traction diesel engine) by 52 %
Reduction of diesel consumption from 24 kg/h to 4 kg/h, that is, 6 times less
Oil consumption decreases proportionally with the decrease in diesel consumption
Maintenance costs for MDT decrease with 30%
Increases locomotive availability with 20%
The period between revisions increases by 20%
Instead of 28000 kg (MDT with generators and auxiliary services) we can use a 700 kg assembly (MDA), that is 40 times less
Reduces environmental pollution
Monitoring the operating parameters of the locomotive
Amortization of the investment between 12-22 months

Parameter Diagnosis
of Operation

A system of four electric fans, two on each branch of radiators, provided with internal blinds.

The external and internal blinds are actuated with servomotors that close or open depending on the temperature of the cooling liquid, commanded by the temperature sensors by a central automatic.

The installation ensures operating conditions of the Diesel engine at a high efficiency due to the improvement of the thermal operating regime through the automation system.

The objectives of the installation:

Operation of the Diesel traction engine in the optimal temperature regime to ensure minimum fuel consumption at all times
Reducing energy consumption to keep the traction motor warm
Removing the additional energy consumption of the ventilation when the thermal regime of the engine is below the optimal value

Reduces MDT fuel consumption
Removes heat losses from radiators when the temperature is below the optimal operating temperature by closing the external and internal blinds
It ensures the operation of the Diesel engine at the optimal temperature
It reduces the polluting effect of diesel engine exhaust gases and hydrostatic oil
The energy consumed by ventilation is directly proportional to the temperature of the cooling liquid
The ventilation works for about 50 % of the operating time of the MDT
Eliminates energy consumption for driving the hydrostatic pump
It does not require maintenance or consumables