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08. Deutz Common Rail
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08. Deutz Common Rail
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Author:
Hector Manuel Araneda Rojas
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Challenges in the Future Answered by Deutz CR New emission legislations -
On-road Euro 4 (10/2005) incl. exhaust aftertreatment
-
Off-road Stage 3 (01/2006 ... 01/2008)
Cost reduction -
DEUTZµs Medium Duty FIE (el. UPS) has a cost penalty against the main C&I competitorsµ option for Stage 3 (el. distributor pump)
Customer requirements -
Noise reduction ~ 3 dB(A) until 2006
-
Torque increase 10...20 % (low end and max. torque)
-
Main customer RVI is ³Common Rail ± minded³
Ô
New electronic FIE to be developed for the Medium duty engine families (SOPµs: mid 2005)
2015 FIE (el. UPS) is attractive for the future
2011, 914: Product concept/strategy under work (SOPµs > 2006)
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Heater (optional)
2
Pressure sensor
3
MProp
Injector
pm in > 0,5 ÷ 1,0 bar pm ax < 10,5 ÷ 13 bar p System = 300 ÷ 1600 bar p back, m ax < 1,2 bar
Pressure sensor Rail DBV 3
Prefilter with water separator
HP-pump 1
2
FCU
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Supply pump Handprimer
Main filter
Thermostatic valve YCU: Ylectronic Control Unit FCU: Fuel Control Unit DBV: Pressure limiter valve
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a-Valve-Injektor
2-Valve-Injektor
Cross Section of a BOSCH-CRIN 2nd Generation Injector
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Inlet
3,5
to PF 45 Outlet
Fuel flow [l/min]
3 2,5 2 1,5
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Supplier: BOSCH FCU for all DCR systems usable Tested Part from Supplier
0,5 0 300
500
700
900
1100
Current [mA]
1300
1500
ü Uow Pressure vs. Engine Speed 8
Pressure [bar, absolute]
7,5 7 6,5 6 5,5 5 4,5
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1000
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Yngine speed [rpm]
2000
2500
3000
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Specifications:
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pgegen [bar] nMotor [1/min] Q [U/min] 3 100 0,333 10 1000 1,83 10 2300 2,92
%| Suction pressure: p = 0,5 ± 1.0 bar abs
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