D20 Euro 3 Engines

ConceptThe D20 common rail engine provides an ideal basis for day-to-day

driving. The focus is on the favourable torque and power output

over the entire range of speeds used when running the vehicle. The

common rail injection technology offers the ideal technical basis in

this respect.

The design of the system offers precise engine control, optimal fuel

atomization and combustion, high injection pressures even at low

rpm, providing considerable torque and power advantages. This

Technology also provides the opportunity to utilise a quick

responding Turbo charger in combination with a bypass function,

providing quick drive away characteristics corresponding to

engines with larger displacement.

MAN is able to offer a complete, future oriented common rail

engine range, with a view to fulfilling future pollutant limits.

D20ENGINESD20ENGINES

Advantages◗ Small engine displacement of 10.518 Itrs.

◗ EDC7 Common Rail Injection System giving 2 injections

per stroke.

◗ Four valve technology with overhead camshaft.

◗ 100kg advantage of payload to comparative engines.

◗ Up to 5% lower fuel consumption compared to D2866.

◗ A one piece cylinder head.

◗ No oil or coolant passages through head gasket.

◗ Parallel distribution for oil & coolant to block and head.

◗ High strength GJV cast block material.

◗ Extremely stiff connection permits combustion pressures up

to 200bar.

◗ Acoustically optimised crankcase.

◗ SCR not required for Euro 4 emission standards.

◗ Externally cooled EGR for lower combustion temperatures.

◗ High pressure fuel pump provides full fuel atomisation at low rpm.

NEW ENGINE GENERATION D20 COMMON RAIL

FROMMANFROMMAN

On engines with a Common Rail system, the injection pressure

builds up independently of the load and engine speed.

The central high-pressure pump creates an accumulated volume with

a potential of up to 1600 bar. This is available on a common rail to

each injection nozzle for finely atomised injection.

The time of injection and duration are specified by the EDC control

unit via electrically activated solenoid valves. These valves are

seated directly on the injector.

Cooled exhaust-gas recirculation on the MAN engine.

The Euro 3 guidelines require a reduction in nitrogen oxides (Nox)

in the exhaust gas to less than 5g/kWh. The technical measures to

adhere to this value lead to higher fuel consumption.

To minimise the increased consumption, MAN Euro 3 engines have

been equipped with a cooled exhaust-gas recirculation, EGR, since

the TG-A was introduced.

With EGR, part of the exhaust gas is added to the air volume

taken in to further reduce the combustion temperature. This

measure increases the specific heat of the intake air and reduces

the oxygen content.

With the current state of the art, the engine modifications for

pollutant reduction in conjunction with externally cooled exhaust-

gas recirculation are not yet adequate to comply with the Euro 4

limit values. For this reason, additional techniques for exhaust-gas

aftertreatment are available on MAN vehicles.

Throughflow of the MAN PM catalytic converter.

Function schema of the MAN PM catalytic converter.

The solution to achieve Euro 4 requirements include the

introduction of the MAN PM Catalytic Converter System. This

involves the reduction in nitrogen oxide values by means of

externally cooled exhaust-gas recirculation in conjunction with

exhaust-gas aftertreatment for reduction of particle emissions

(MAN PM Catalytic Converter System). The advantages of this

technology are low weight, low costs and no recourse to additional

use of space on the chassis.

The PM Catalytic Converter System is a MAN in-house

enhancement of the CRT filter system. The designation “PM-Kat”

is a registered trade mark, protected for MAN. In comparison with

the CRT filter system, the soot particle separator section of the

MAN PM catalytic converter is configured as an open, non-

clogging system. The PM Catalytic Converter System requires no

additional fitting space beyond the existing dimension of the

muffler. It will be used at MAN together with the cooled exhaust-

gas recirculation as a technical solution to achieve the Euro 4

requirements.

COMMON RAIL (CR) INJECTION SYSTEM

The essential feature of the CR system is thus the separation of

pressure generation and injection. The injection of the Common Rail

system is independent of the engine speed and engine load, and

therefore provides high injection pressures even at low engine speeds.

The increased mean injection pressure as well as the time of injection

can be chosen freely within a wide range independently of the engine

operating point. Multiple fuel injections with advanced, main and

post-injections are possible.

EXHAUST-GAS RECIRCULATION (EGR)

TECHNOLOGY FOR EURO 4 MAN PM CATALYTIC CONVERTER SYSTEM

4 EGR shut-off valve.

5 Intake tract.

6 Coolant connection.

1 Exhaust gas take-off points.

2 EGR heat exchanger (radiator).

3 Pressure peak valve.

800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300

Speed (rpm)

Co

nsu

mp

tio

n (

g/k

W)

Torq

ue

(Nm

)O

utp

ut

(kW

)

330

310

290

270

250

230

210

190

170

150

130

1900

1800

1700

1600

1500

1400

1300240

230

220

210

200

190

180

170

160

D2066 LF02

◗ Cylinder arrangement 6 cylinders inline

◗ Maximum power 287kW/390 hp

◗ Maximum torque 1900Nm/1401ft/lbs

@1000-1400 {1/min}

◗ Capacity 10,518ccm

◗ Bore/stroke 120mm/155mm

◗ Compression 19:1

◗ Oil capacity 37 litres

◗ Fuel system Bosch EDC 7

◗ Fan coupling actuation Visco Fan

◗ Weight 960kg (without oil)

MAN D20 EURO 3 WITHCOMMON RAIL (CR) AND

EXTERNAL EXHAUST GASRECIRCULATION (EGR)

800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300

Speed (rpm)

Co

nsu

mp

tio

n (

g/k

W)

Torq

ue

(Nm

)O

utp

ut

(kW

)

350

330

310

290

270

250

230

210

190

170

150

2100

2000

1900

1800

1700

1600

1500240

230

220

210

200

190

180

170

160

D2066 LF01




@1000-1400 {1/min}








800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300

Speed (rpm)

Co

nsu

mp

tio

n (

g/k

W)

Torq

ue

(Nm

)O

utp

ut

(kW

)

320

300

280

260

240

220

200

180

160

140

120

1600

1500

1400

1300

1200

1100

1000 240

230

220

210

200

190

180

170

160

D2066 LF04




@1000-1400 {1/min}








MAN D20 EURO 3 WITHCOMMON RAIL (CR) AND

EXTERNAL EXHAUST GASRECIRCULATION (EGR)

800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300

Speed (rpm)

Co

nsu

mp

tio

n (

g/k

W)

Torq

ue

(Nm

)O

utp

ut

(kW

)

310

290

270

250

230

210

190

170

150

130

110

1800

1700

1600

1500

1400

1300

1200240

230

220

210

200

190

180

170

160

D2066 LF03




@1000-1400 {1/min}








MAN Automotive Imports Pty Ltd72 Formation Street, Wacol, Qld 4076

Telephone: 07 3271 7777 • Facsimile: 07 3271 2047

www.man.com.au

Specifications are subject to change without notice. Copyright c 2006, MAN Automotive Imports Pty Ltd. MAN06-02

D20 Euro 3 Engines

Documents

Transcript of D20 Euro 3 Engines