Fav 900
Engine / Injection pump
Electronic pump control / Engine stop
A
General
Fav 900 ab 23/3001
14.11.2000
2710
000004
A
a
1/2
Capitel
Docu-No.
Index
Date
Version
Page
Electronic pump control / Engine stop
Text-module
Electronic pump control: Starting process
Chapter 9000 Reg.C Sheet 33 (Diagramm EDC- Engine control)
Chapter 9000 Reg.C Sheet 2 (Diagramm Power UB)
Bullet-List
●
Ignition lock S002 connects supply voltage UB 15 to Engine Control module A021 (Conector X048 ;
Pin 15)
●
MSG A021 (Connector X048 ;Pin 27) connects Earth to relay K020
●
Relay K020 connects supply UB30 to MSG A021 (Connector X048 ; Pin 3 and Pin4)
●
MSG A021 (Connector X048 ; Pin 18) connects Voltage onto Relay K 021
●
Relay K 021 connects Voltage UB30 onto Engine control module A020 (Pin 7)
During cranking process, Engine control module A020 sets internally for an engine speed of approx.
720 rpm.
After cranking process, EDC - BUS will be established , and Engine control Module A021 will control
engine speed.
Text-module
Electronic Pump Control: Engine Stop
Chapter 9000 Reg.C Sheet 33 (Diagram EDC- Engine Control)
Chapter 9000 Reg.C Sheet 2 (Diagram Voltage UB)
Engine will be stopped by the value "Injected volume set at O".
High Pressure Solenoid valve Q-MV within injection pump is without power and so fully openend.
High pressure cannot be established.
PM-Picturemodule
Text-module
By setting ignition key into "0" position, Engine control module A021 receives signal: Engine
Stop !
The Microprocessor within Engine Control unit A021 defines trough wich process the engine is
to be stopped,
Bullet-List
Engine Stop Processes
●
Engine Control unit A021 (Connector X047 : Pin20) supplies Voltage UB to Pump Control Unit A020
(Pin 5)
●
Engine Control unit A021 (Connector X048 ; Pin18) interrups Voltage supply to Relay K021 .No
Voltage supply UB30 to Pump Control Unit A020 .
●
Engine Control unit A021 (Connector X048 ; Pin 27) interrupts Earth connection to Relay K020 . No
Voltage supply UB30 to Pump Control Unit A020 .
Sketch: High pressure stage of the radial piston pump VP44
PMTAB_Picture
