Diesel Basic

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Bosch Training Centre Diesel 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 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

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 Gear Pump / Feed Pump

Bosch Training Centre Fuel Layout - With VE 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.

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)

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 Role of Electronics in FIE

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 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)

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

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

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.

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

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.

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

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 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

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 Pressure Limiter Valve

From Rail

Return to Tank

High Pressure Fuel

Low Pressure Fuel

pressure [bar]

2000 1500 1000 500 0 0

4

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

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

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

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 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.

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