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Diagnosis Technician >> Diesel Engine Control System >> Common-rail EFI Diesel

Outline System Configuration of Supply Pump

(1/2)

1.Outline

Fuel pressure sensor Pressure limiter

Inection pipe

Common-rail

EC!

ED!

Fuel inlet

pipe

Supply pump

Fee" pump

Fuel filter#

se"imenter

SC$Inector

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Outline System Configuration of Supply Pump

(2/2)

%.Parts name

Fuel pressure sensor Pressure limiter

Inection pipe

Common-rail

EC!

ED!

Fuel inlet

pipe

Supply pump

Fee" pump

Fuel filter#

se"imenter

SC$Inector


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Supply Pump &ppearance of the Supply Pump

(1/2)

Fuel return

1.Parts name

'egulator (al(e

Inlet

Inner cam

Fuel temperature

sensor

Outlet

SC$ )Suction

Control (al(e*Chec+ (al(e


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Supply Pump &ppearance of the Supply Pump

(2/2)

%.1,D-FT$ engine

Fuel return

Outlet

Inlet

Fuel temperature

sensor

SC$

)Suction Control $al(e*


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Supply Pump Internal Construction of Supply Pump

(1/1)

%. Fee" pump

. Deli(ery (al(e

. Chec+ (al(e

/. SC$

)Suction Control $al(e*

0. Plunger

. Inner cam

1. 'egulator (al(e



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Supply Pump Fuel Flo2 of the Supply Pump

(1/3)

Fee" pump

Deli(ery (al(e

Chec+ (al(e

SC$ )Suction Control $al(e*

Plunger


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(2/3)

to Fuel tan+

SC$1 SC$%

EC!

Chec+ (al(e

Plungers

Deli(ery (al(e

to Common-rail


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(3/3)

1,D-FT$ EngineChec+ (al(e

Plunger

&

SC$

fromFee" pump

Plunger

3

Eccentric cam

to Common-rail

'ing cam


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Supply Pump 4eneration of Fuel Pressure in the

Supply Pump

(1/2)


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Supply Pump 4eneration of Fuel Pressure in the

Supply Pump

(2/2)

1,D-FT$ Engine


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Supply Pump 'egulation of the Fuel Pressure 5y the

Supply Pump

(1/3)'EFE'E6CE7

SCV Control of the Supply Pump

1. SC$

%. Chec+ $al(e

/. Plunger

. Inner Cam

0. Deli(ery $al(e

EC!


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Supply Pump

(2/3)

1,D-FT$ Engine

EC!

S$CChec+ (al(e Chec+ (al(e

Plunger

'ing cam

Eccentric cam


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Supply Pump

(3/3)

OPEN

CLOSE

ECU

SCV opening/cloing time! long

SCV opening/cloing time! short

ECU

OPEN

CLOSE



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Common-rail Construction of Common-rail

(1/3)'EFE'E6CE7"Oper#tion of the Preure Limiter



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(1/3)


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(1/3)


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(2/3)'EFE'E6CE7"Oper#tion of Preure $ich#rge V#l%e/Preure &egul#tor

1,D-FT$ Engine

Pressure limiter

Pressure "ischarge (al(eFuel pressure sensor

7 to Inector

7 from Supply pump

7 to Fuel tan+


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Inector Inector O(er(ie2

(1/1)



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Inector Construction of Inector

(1/1)

Correction resistor

Solenoi" (al(e

'eturn port

Orifice

Control cham5er

6ee"le

EC! ED!


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Inector Correction 'esistor of Inector

(1/1)


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Inector Inector Operations

(1/1)


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Ser(ice 8int Precautions for 'emo(ing an"

'einstalling Parts

(1/1)

Inector

Inection pipe

Fuel inlet pipe

Supply pump

Common-rail


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Ser(ice 8int Inection Pipe Installation

(1/1)'EFE'E6CE7

Pipe 'itting Conition



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Ser(ice 8int Fuel 9ea+ Inspection

(1/1)



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Ser(ice 8int SC$ Inspection

(1/1)

Inspect the SC$ as

Follo2s7

SC$1 SC$%


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Ser(ice 8int Common-rail

(1/1)


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Ser(ice 8int Inector Installation

(1/1)


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Ser(ice 8int Po2er 3alance Test Proce"ure

(1/1)

I6:ECTO' C!T ;1 O6


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Supply Pump SC$ Control of the Supply Pump

(1/1)

SC$ open )Duty control*

Fuel pressure signal

Di i T h i i Di l E i C l S C il EFI Di l


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Common-rail Operation of the Pressure 9imiter

(1/1)

Di i T h i i Di l E i C t l S t C il EFI Di l


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Common-rail Operation of Pressure Discharge

$al(e


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Ser(ice 8int Pipe Fitting Con"itions

(1/1)

6ut

Pipe Pipe

6ut

Parts

Di i T h i i >> Di l E i C t l S t >> C il EFI Di l


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E=ercise

Ue the Eercie to chec* your le%el of unert#ningfor the m#teri#l in thi Section+ ,fter #n-ering e#ch

Eercie. you c#n ue the reference utton to chec* the

p#ge rel#te to the current 0uetion+ hen you get #

incorrect #n-er. ple#e return to the tet to re%ie- the

m#teri#l #n fin the correct #n-er+ hen #ll 0uetionh#%e een #n-ere correctly. you c#n go to the net

Section+

Section Next Section

Diagnosis Technician >> Diesel Engine Control System >> Common rail EFI Diesel


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uestion- 1

he follo-ing illutr#tion ho- the #i#l plunger type inection pump+

'rom the -or group. elect the p#rt to perform the follo-ing control (145)+

#+ ECU

+ E$U

c+ Common4r#il

+ Supply pump

e+ 6nection pump

f+ 6nection no77le

g+ 6nector

1+

2+

3+

5+

8+

a b c d e f g

a b c d e f g

a b c d e f g

a b c d e f g

a b c d e f g'efer to page



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uestion- %

No. Question True or

FalseRefer to

page

1

6n the common4r#il E'64ieel ytem. the upplypump itelf preuri7e the fuel #n itriute it to thecyliner. ut # in the con%ention#l ieel ytem+

True False

2

6n the common4r#il E'64ieel ytem. the fuelinection %olume #n timing #re controlle yregul#ting the length of time the inector rem#in open#n y controlling the inection timing. ut # in theE'6 ytem of # g#oline engine+

True False

3

6n the upply pump. the SCV #ut the %olume of thefuel th#t i r#-n into the plunger. #n the gener#tefuel preure i controlle y incre#ing or ecre#ingthe %olume of fuel th#t i r#-n in+

True False

9#r* e#ch of the follo-ing t#tement rue or '#le+



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uestion- /

No. Question True or

FalseRefer to

page

1

, fuel le#* inpection on the common4r#il E'64ieelytem c#n e conucte y performing #n ,C6VEES through the ue of the $S466+ 6f the $S466 iun#%#il#le. # le#* inpection c#n e performe yre%%ing the engine+

True False

2hen repl#cing # common4r#il. the inection pipemut #lo e repl#ce+

True False

9#r* e#ch of the follo-ing t#tement rue or '#le+



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uestion-

he follo-ing illutr#tion ho- the contruction p#rt of the upply pump+

'rom the -or group. elect the -or th#t correpon to 148 in theillutr#tion+

#+ SCV (Suction Control V#l%e)

+ $eli%ery %#l%e

c+ 6nner c#m

+ 'ee pump

e+ Plunger

1+

2+

3+

5+

8+

a b c d e

a b c d e

a b c d e

a b c d e

a b c d e

'efer to page



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uestion- 0

he follo-ing t#tement pert#in to the function of the preure

limiter+ Select the t#tement th#t i True+

1 ,ut the preure in the common4r#il+

2&elie%e the preure if the preure in the common4r#il incre#e to #n#norm#lly high le%el+

3 $etect the preure in the common4r#il+

4$etect the temper#ture of the fuel #n etermine it %icoity #ccoring to thetemper#ture+

'efer to page



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