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Bosch Training Centre Diesel Engine
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Bosch Training Centre Principle of the reciprocating engine
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre 4 stroke cycle diesel engine
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Bosch Training Centre Fuel layout on a diesel engine(o/f valve on FIP)
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Sectional view of the injection pump PE .. A
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Common Rail System Gear Pump / Feed Pump
Bosch Training Centre Fuel Layout - With VE Pump
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Bosch Training Centre VE Pump - Features The basic VE Pump contains the following functional groups: Vane type supply pump Distributor Head (High Pressure Pump) Mechanical Governor Hydraulic Timer Electric Shut off Device
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Distributor Pumps - VE Mechanical (sleeve controlled)
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Bosch Training Centre Role of Electronics in FIE
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Bosch Training Centre EDC System blocks
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre VE EDC Pump Structure
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Demands & Basic parameters Emission Legislation Higher Power and Torque Fuel Efficient Smoother drivability Cost effective Injection Quantity Injection Begin Injection Pressure
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System
Degrees of Freedom in Common Rail : •
Injection Pressure
•
Injection Quantity
•
Injection Begin
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System What is Common Rail? Common Rail is a
Modular, Electronic Controlled, Diesel Fuel Injection System.
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System
Special Characteristics : • Injection Pressure is produced and governed relatively independent of the Engine Speed and can be selected freely within a wide range. • Injection begin and Injection Quantity can be freely selected (EDC function)
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Bosch Training Centre Common Rail System
How are the main characteristics of CR system achieved ? • CR uses an intermediate High Pressure Accumulator (Rail) • Uses Electronic Control of Injectors valves)
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
(use of Electro-magnetic
Bosch Training Centre Common Rail System Injection pressure [bar] 1800 1600 1400
Common Rail
1200 1000 other port-controlled systems
800 600
Common Rail Other port controlled Systems (Conventional)
400 200
1000
2000
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3000
4000 5000 Engine speed [RPM]
Bosch Training Centre Common Rail System Driver demand
CP3
MPROP
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System Layout
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Bosch Training Centre Common Rail System High Pressure Pump CP1 - Standard
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System High Pressure Pump CP1 - Standard
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System High Pressure Pump CP1 - Standard
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System
High Pressure Pump CP1 - Standard
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System High Pressure Pump CP1 - Standard
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Common Rail System CP3 - High Pressure Pump
Controller (MPROP) - Control at the Pump inlet Feed Pump (Gear Pump)
Common Rail System MPROP - Magnetic Proportional Valve Maximum delivery Q [l/h] Zero delivery
I [A]
Detail A
Fuel
Zero delivery
Maximum delivery
A Fuel
Bosch Training Centre Common Rail System DRV – Pressure Regulator Valve
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre
Common Rail System
FHigh pressure
FSpring
FMagnet
FMagnet
DRV – Pressure Regulator Valve
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System High Pressure Rail
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Bosch Training Centre Common Rail System High Pressure Rail Factors determining the Rail Volume : Rail Volume is a compromise based on the following two factors Volume to be kept as small as possible to keep the response time of the system short (i.e., the setpoint pressures to be achieved in as short a time as possible) Volume should be as large as possible to keep the Pressure oscillation to minimum possible value.
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre High Pressure Rail
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Bosch Training Centre Pressure Limiter Valve
From Rail
Return to Tank
High Pressure Fuel
Low Pressure Fuel
pressure [bar]
2000 1500 1000 500 0 0
4
time
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Bosch Training Centre Injector
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Bosch Training Centre Injector
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Injector Principle
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Bosch Training Centre Injector 2/2 Valve
Closed
Open p2 ≈0
p2 ≈0 p1
U
p st = p1
p1 >p st >p 2 Control volume Vst
Inlet Orifice
FV
p1
Valve Lift
I
Outlet Orifice
F0
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
F0
Bosch Training Centre Common Rail System Injector
Current
Armature Lift Nozzle end Pressure
Control Chamber Pressure
Needle Lift
Injection Rate
Time
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Injector Characteristics 100
Full Load Area
90
1600bar 1500bar
Quantity (mm3/str.)
80
70
950bar
Emission area 60
600bar
50
40
Pilot Injection Area
300bar
Low Idle Area
30
250bar 20
10
0 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Energizing Time (ms)
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
0.9
1.0
1.1
1.2
1.3
1.4
1.5
Bosch Training Centre Electronic Control Unit Input circuits (1)
analog signals
digital signals
sign. process. unit
Output circuits (2)
D
A
sign. process. unit
Signal D
A
processing
digital correcting and output signals
(3) Interfaces (5): communication diagnosis
Power supply (6)
Memory
12/24V
(4)
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
steady correcting varaibles
Bosch Training Centre Common Rail System Filter assembly
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.
Bosch Training Centre Common Rail System Electric Fuel Pump
Division : MICO/PDT(BTC) This is the exclusive property of Motor Industries Co. Ltd. Without their consent, it may not be reproduced or given to third parties.