Operation Manual / Power2 340-H / Low-pressure stage
1 Introduction / 1.4 Power2 layout and function
© Copyright 2022 ABB. All rights reserved.
HZTL4053_EN
Rev.F
March 2022
1.4
Power2 layout and function
Fig. 1: Layout and function
Power2
Two-stage turbocharging
21
HP compressor
Power2 LP
Low-pressure stage
22
HP turbine
Power2 HP High-pressure stage
23*
Gas piping (bellows)
A
Exhaust gas inlet from internal combus-
tion engine
24
LP turbine
B
Exhaust gas outlet
25
LP compressor
C
Air or air/gas mixture inlet
26
Intercooler
D
Air or air/gas mixture outlet and supply
to the charge air cooler
- - -
Not included in the Turbo Systems
scope of delivery
*) If present
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 subsequently through the bellows (23*) of the gas pipe to the
turbine (24) of the low-pressure stage. The compressor (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 compressor (21) of the high-pressure stage. Here
the air or air/gas mixture is compressed further and leaves the two-stage turbocharging
(Power2) in the direction of the charge air cooler.
Page
7
/
122
Summary of Contents for PT003888
Page 2: ......
