Power2 Layout And Function; Fig. 1: Power2 Layout And Function - ABB PT004162 Operation Manual

Operation Manual / Power2 845-M / High-pressure stage
1 Introduction / 1.4 Power2 layout and function
1.4

Power2 layout and function

Fig. 1: Power2 layout and function
Power2 Two-stage turbocharging
Power2 LP Low-pressure stage
Power2 HP High-pressure stage
A Exhaust gas inlet from internal combus-
tion engine
B Exhaust gas outlet
C Air or air/gas mixture inlet
D Air or air/gas mixture outlet and supply
to the charge air cooler
The diagram shows the position of the low-pressure (Power2 LP) and high-pressure stage
(Power2 HP) within two-stage turbocharging (Power2). The low-pressure stage is always op-
erated in combination with a high-pressure stage connected in series. The two-stage tur-
bocharging (Power2) supplies the engine with the air volume and associated charging pres-
sure required for operation.
Here, the exhaust gases of the internal combustion engine flow through the turbine (22) of
the high-pressure stage and then to the turbine (24) of the low-pressure stage. The com-
pressor (25) of the low-pressure stage sucks in fresh air or the air/gas mixture, respectively.
This precompressed air or air/gas mixture flows through the intercooler (26) into the com-
pressor (21) of the high-pressure stage. Here the air or air/gas mixture is compressed fur-
ther and leaves the two-stage turbocharging (Power2) in the direction of the charge air
cooler.
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21 HP compressor
22 HP turbine
24 LP turbine
25 LP compressor
26 Intercooler
- - - Not included in the Turbo Systems
scope of delivery
HZTL4069_EN Rev.F March 2022