gf0900p9900a

Charging, basic function

Type gf · topic 09.00 · version 0106 · 2020-09-10

Applies to: Engine all (CAR)

Where it sits

Function group 1 Engine › 09 Air intake, turbocharging › 09.00 General — Series 900 (models 9**) · Series 902 (models 9**) · Series 904 (models 918, 919, 924, 925, 938, 943, 957) · Series 906 (models 917, 918, 924, 953)

EinPAS 15 Engine › 15.30 Air intake/charging › 15.30.1 Basic information — Series 900 (models 9**) · Series 902 (models 9**) · Series 904 (models 918, 919, 924, 925, 938, 943, 957) · Series 906 (models 917, 918, 924, 953)

Also applies to engines/gearboxes: 139 ***, 254 ***, 256 ***, 272 ***, 276 ***, 282 ***, 457 9**, 541 9**, 542 9**, 608 ***, 700 4**, 700 420, 700 421, 700 422, 700 423, 715 3**, 715 5**, 722 6**, 722 9**, 724 ***, 724 0**, 724 033, 724 044, 724 045, 724 1**, 724 103, 724 114, 724 115, 724 120, 725 ***, 725 0**, 725 035, 725 037, 725 038, 725 085, 725 1**, 739 390, 739 391, 739 395, 739 396, 739 397, 739 398, 739 399, 740 698, 743 3**, 743 4**, 743 498, 746 971, 924 9**, 924 910, 925 9**, 926 9**

GF09.00-P-9900A

Charging, basic function

09.09.2020

Engine

all (CAR)

Charging, basic function

Schematic diagram of charging

A

Fresh air

B

Charge air (filtered)

C

Exhaust

D

Charge air (compressed)

E

Charge air (cooled)

P09.00-2172-76

Overview

This document contains information on:

General

Function

General

The charging compresses the intaken fresh air and increases the cylinder charge level. The engine output increases.

Function

The exhaust gases reach the turbine wheel via the intake on the exhaust gas turbocharger’s turbine wheel housing.

Via a constriction, thermal energy is converted into kinetic energy and the turbine wheel starts to rotate.

The turbine wheel is on the same shaft as the compressor wheel. The compressor wheel is set in motion by the rotation of the turbine wheel and intakes fresh air.

The fresh air sucked in is compressed in the compressor wheel housing and reaches the engine through an outlet via the charge air cooler.

Function schematics

Function schematic for charging

Engine 608 in model 118, 177, 247

PE09.00-P-2500-97A

Engine 282 in model 118, 177, 247

PE09.00-P-2500-97B

Engine 260 in model 118, 177, 247Engine 264 in model 167

PE09.00-P-2500-97C

Engine 654 in model 118, 167, 177, 247Engine 654 in model 213, 238, 257 as of model year 2021Engine 656 in model 167, 223

PE09.00-P-2500-97D

Engine 256 in model 167Engine 256 in model 213, 238 as of model year 2021Engine 264 in model 213, 238, 257 as of model year 2021

PE09.00-P-2500-97E

Engine 176, 177 in model 167

PE09.00-P-2500-97F

Engine 139 in model 118, 177

PE09.00-P-2500-97G

Engine 256 in model 223

PE09.00-P-2500-97H

Engine 176, 177 in model 223

PE09.00-P-2500-97I

Engine 279 in model 223

PE09.00-P-2500-97J

Additional basic functions

Boost pressure control, basic function

Engine all (CAR)

GF09.40-P-1000A

Overrun mode bypass air, basic function

Engine 139, 176, 177, 254, 256, 260, 264, 279, 282

GF09.40-P-1002A

Charge air cooling, basic function

Engine all (CAR)

GF09.41-P-1000A

Electric additional compressor, basic function

Engine 254, 256

GF09.50-P-1002A

Components

Basic function of pressure sensor upstream of exhaust gas turbocharger

Engine 139

GF09.40-P-2001A

Exhaust gas turbocharger, detailed information

Engine 608, 654, 656

GF09.40-P-2500A

Engine 139, 264

GF09.40-P-2500B

Temperature sensor upstream of exhaust gas turbocharger, detailed information

Engine 139

GF09.40-P-2502A

Referenced documents