Process and apparatus for regulating the supply of fresh air in

Details Process and apparatus for regulating the supply of fresh air in Process and apparatus for regulating the supply of fresh air in

1994-02-14

1995-10-31

Joyce, Harold

Ventilation

Vehicle

Pressure regulation

454105, 454112, B61D 2700

Patent

active

054624819

ABSTRACT:
A process and apparatus for regulating the quantity of fresh air in high-speed trains by means of pressure-wave valves. A signal for adjusting a drive unit is determined from the passenger count and outside temperature. This drive unit causes a stop fork to move into a flap stop position of the valve in the "open" operating mode so that the required amount of fresh air can be supplied. The process according to the invention results in a considerable saving on energy, since only the absolutely necessary amount of fresh air need be heated or cooled and the period of time in which ventilation can be used rather than cooling is lengthened.

REFERENCES:
patent: 5009148 (1991-04-01), Karg et al.

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