ABB Power2 850-M16

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Operation Manual / Power2 / 1 Introduction

1 Introduction / 1.4 Power2 layout and function

1.4 Power2 layout and function

Fig.1: Power2 layout and function

Power2 Two-stage turbocharging 21 HP compressor

Power2 LP Low-pressure stage 22 HP turbine

Power2 HP High-pressure stage 24 LP turbine

A Exhaust gas inlet from internal combus-

tion engine

25 LP compressor

B Exhaust gas outlet 26 Intercooler

C Air or air/gas mixture inlet

D Air or air/gas mixture outlet and supply

to the charge air cooler

- - - Not included in the ABB Turbo Sys-

tems scope of delivery

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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ABB Power2 850-M16 - Page 7