Doosan 7/20 Manual de usuario

10/12/2010

Small compressors

COMPRESSOR TRAINING

Company Confidential

SMALL COMPRESSORS RANGE

•7/20 - P65 - 7 bar (100 PSI), 1.9 m3/min (70 cfm)

•7/26E - P90 - 7 bar (100 PSI),2.5 m3/min (90 cfm)

•7/31E - P110 - 7 bar (100 PSI), 3.0 m3/min (105 cfm)

•7/41 - P135 -7 bar (100 PSI), 4.0 m3/min (140 cfm)

•7/51 - XP185 -7 bar (100 PSI), 5.0 m3/min (175 cfm)

•7/71 - P260 -7 bar (100 PSI), 7.1 m3/min (250 cfm)

•12/56 -12 bar (170 PSI), 5.6 m3/min (200 cfm)

Company Confidential

SUMMARY

•The compressor can be divided in the following subsystems

–ENGINE & AIREND

–LUBRICATION & COOLING SYSTEM

–AIR FLOW REGULATION SYSTEM

–SEPARATION SYSTEM

–BLOWDOWN SYSTEM

–INSTRUMENT/CONTROL PANEL

–ELECTRICAL WIRING

•Troubleshooting

10/12/2010

Company Confidential

ENGINE (7/20)

Compressor 7/20

IR Designation 3IRJ5N

Model D 1005

Cylinders 3

Displacement 1 L

Rated Output (kW@RPM) 17.5@3000

Aspiration Naturally aspirated

Fuel Pump Mechanical inline

pump

Emissions Tier II certified

Electrics 12 Volts

Company Confidential

ENGINE Tier 2 (7/26E –7/51)

Compressor 7/26E 7/31E 7/41 7/51

Designation 3IRH2NS 3IRH8N 4IRH8N 4IRI8N

Model 3TNV82A 3TNV88 4TNV88 4TNV98

Cylinders 3344

Displacement 1,3 1,6 2,2 3,3

Rated Output

(kW@RPM) 21,1@2800 25,8@2800 34,8@280

049,7@240

Aspiration Naturally aspirated

Fuel Pump Mono plunger mechanical pump

Emissions Tier II certified

Electrics 12 Volts

Company Confidential

ENGINE Tier 3(7/51) from September 2008

Compressor 7/51

IR Designation 4IRI8NE-2

Model 4TNV98

Cylinders 4

Displacement 3,3

Rated Output (kW@RPM) 50.2@2400

Aspiration Naturally aspirated

Fuel Pump Mono plunger

mechanical pump

Emissions Tier III certified

Electrics 12 Volts

10/12/2010

Company Confidential

ENGINE Tier 2 (7/71 –12/56)

Compressor 7/71 –12/56

IR Designation 4IRD5N

Model JD 4045DF270

Cylinders 4

Displacement 4.5 liter

Rated Output (kW@RPM) 60@2500

Aspiration NaturallyAspirated

Fuel Pump Rotary fuel pump

Emissions Tier II certified

Electrics 12 Volts

Company Confidential

ENGINE Tier 3 (7/71 –12/56) from October 2008

Compressor 7/71

IR Designation 4IRI8TE

Model 4TNV98T

Cylinders 4

Displacement 3,3

Rated Output (kW@RPM) 59.2@2300

Aspiration Turbocharged

Fuel Pump Mono plunger

mechanical pump

Emissions Tier III certified

Electrics 12 Volts

Company Confidential

Eco-Governor is Yanmar unique electronics control governor

system which has been used for over 10 years mainly for

agricultural machine. Yanmar has renewed this system to

apply all equipment and named “2G Eco-Governor” which

means second generation Eco-Governor. In addition, EGR

valve for NV3 engine is controlled by this system.

MP type fuel Injection Pump

with ECO Governor

ECU

ECO-Governor system

EGR Valve

EGR Control system

ENGINE Tier 3 Improvements –YANMAR ECO

10/12/2010

Company Confidential

Speed

Rack

position

Eco-Governor

Fuel Pump CSD

Actuator

EGR

Starting Aid

CW Temp.

Starter

Display

Switch

Key Switch

OFF ON

START

Accelerator

CAN

ENGINE Tier 3 Improvements –YANMAR ECO

Company Confidential

EGR Control –exhaust gas re-circulation

Standard Function for >= 37kW

Intake Exhaust

ECU Speed,Load & Temp

ECU

EGR Valve

Piston

Inj.Nozzle

EGR Valve

Combustion temperature is reduced.

NOx Reduced

Exhaust Gas Re-Circulation

Speed, Load, &

Temp.

ENGINE Tier 3 Improvements –YANMAR ECO

Company Confidential

Intake

EGR-Valve

Piston

Liner

Inj.Nozzle

Exhaust

Turbo Charger

EGR Cooler

Reverse flow protection

Re-circulated Gas Cooling for

Low Emission

Cooled EGR system ECU Speed , Load & Temp.

ECU Speed , Load & Temp.

Re-circulation

One way valve

ENGINE Tier 3 Improvements –YANMAR ECO

10/12/2010

Company Confidential

Fuel filter

Electric fuel

feed pump

Fuel tank

Engine crankcase

Accumulator

Overflow

orifice

Timer piston

Plunger

Distributor

shaft

Torochoid pump

Fuel return

Pressure control valve

Fuel injection pipe

Nozzle

Injection pump

tappet

Oil seal

joint

Engine oil

Cam

High pressure gallery

Low pressure gallery

orifice

Water separator

12/48

Engine coolant

Thermo-element

Engine oil

Cam

Trochoid pump

ENGINE Tier 3 Improvements –YANMAR ECO

Company Confidential

ENGINE Tier 3 Improvements –YANMAR ECO

Company Confidential

AIREND

•Casing houses two screw-type rotors mounted on ball and roller

bearings.

•Diesel engine drives the male rotor through heavy-duty coupling.

•Mechanical seal used to seal the shaft.

•Gear sets allow to change rotor speed and therefore air output.

10/12/2010

Company Confidential

CE55RW - AIREND

AIREND (7/20)

•Now used on 7/20 only, formerly used on 7/21 and 7/26.

•Cast iron body.

Company Confidential

AIREND (7/20)

•Now used on 7/20 only.

•Formerly used on 7/21 and 7/26.

Company Confidential

AIREND (7/26E - 7/51)

•85 mm Airend.

•Different gear sets permit to adjust air delivery.

•Cast aluminium body.

•Repair not advised.

10/12/2010

Company Confidential

AIREND CF 90 (7/71 - 12/56)

•Different gear sets permit

the use of this airend as 7/71

or 12/56.

Company Confidential

COMPRESSOR OIL SYSTEM

•Functions of the oil system:

–Lubricating the rotors, airend bearings and mechanical seals

–Sealing the clearances between the airend rotors

–Cooling of the airend. Heat is generated during air compression.

•The oil flows due to the air pressure. No oil pump is required.

Company Confidential

LUBRICATION & COOLING (7/20)

10/12/2010

Company Confidential

LUBRICATION & COOLING

•The Separator tank is also the

reservoir of compressor oil.

•Pressure in the tank is forcing

the oil through the system.

Company Confidential

LUBRICATION & COOLING

•Cool box design with pusher

type fan.

Company Confidential

LUBRICATION & COOLING

10/12/2010

Company Confidential

LUBRICATION & COOLING

•Compressor oil filter, 10

micron rating.

Company Confidential

LUBRICATION & COOLING (7/26E - 7/51)

Company Confidential

LUBRICATION & COOLING (7/26E - 7/51)

•Oil filter head integrated to airend.

10/12/2010

Company Confidential

LUBRICATION & COOLING (7/71 –12/56)

Company Confidential

LUBRICATION & COOLING (7/71 –12/56)

Company Confidential

LUBRICATION & COOLING (7/71 –12/56)

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