F 002 DG9 A14
2016-07-07
|
Bosch Limited
Product description | NTI 105 | 7
en
1
2
3
4
5
Fig. 2:
Rear view (1)
1 Filter Regulator Combination (FRC)
2 Hose winder
3 Inlet hose to FRC
4 Tank inlet connection
5 Tank outlet connection
1
2
3
4
5
A14_11
Fig. 3:
Rear view (2)
1 Connection from FRC to 5/3 valve (via elbow bulkhead)
2 Safety valve
3 Digital outlet
4 Direct outlet
5 Power inlet
1
2
Fig. 4:
Internal view of NTI 105
1 CMS tanks
2 Valve block
3.4
Description of function
The NTI 105 works on the principle of Pressure Swing
Adsorption (PSA). PSA is a process of generating nitro-
gen from compressed air.
Compressed air is supplied through a pneumatic line
connected to a Filter Regulator Combination (FRC)
where moisture, oil and particulate matter are filtered.
Based on their molecular characteristics, compressed
gases have a tendency to adhere to solid surfaces
known as "adsorbents". The process of compressed
gases adhering to adsorbents is known as "adsorption".
When the compressed air is passed through a tank with
a Carbon Molecular Sieve (CMS), the molecules of oxy-
gen are adsorbed by activated carbon, which is an ad-
sorbent. The other gases are let out to the atmosphere.
During this phase pressurized air is let into another
tank. Again, the oxygen molecules are adsorbed in the
CMS. Nitrogen thus produced has a purity of about 95
to 99%. The nitrogen is collected in a tank for inflating
the tires.
The toggle switch (Fig. 1, Pos. 3) can be used to select
air or nitrogen filling. The selected gas is filled into the
vehicle tire through a filling hose. The NTI 105 should
be supplied with a constant supply of compressed air
at a minimum pressure of 8 bar.
