Huge braking capacity
The Mol Rail-Road vehicles are equipped with 2 brake systems: the vehicle brake (direct brake) and the wagon braking system (indirect brake)
– The vehicle brakes are pneumatically actuated brakes developed following the dual circuit principle, known from trucks and buses. The emergency- and parking brakes assure standstill of the vehicle at all times, even in case of failure of air-pressure (failsafe).
– The impulse controlled drivers valve having following functions commands the brakes of the complete train:
- First quick depression
- Automatic refilling when pressure is ca. 4,8 bar
- Neutral function
- Assimilation, increase pressure with 0,4 bar above the normal pressure
- Automatic pre-filling at a pressure of ca. 3 bar
The predominance of the wagon brakes prevent the wagons from bumping against the rail-road vehicle
The wagon braking system commands also the Rail-Road vehicle brakes during rail operation.
An emergency brake valve, which is totally independant from the drivers valve, opens the main brake line in an emergency situation.
Both brake systems have their own compressor and air reservoirs.
- It has a cylinder compressor mounted on the diesel engine which is generating the energy for the vehicle brakes
- A hydrostatic driven screw compressor (not standard RR1644 & RR2044) of 3600 l/min. at 10 bar, a huge air reservoir and the 1” steel pipes bring the wagon brakes under pressure very fast.
Thanks to the hydrostatic drive, the compressors runs independent from the diesel engine rev’s. The wagon braking system is filled at full capacity even when the diesel engine runs at iddle speed. A switch over valve allows to feed the wagon braking system with the engine driven cylinder compressor in case of an emergeny.