CDI main injection, function - GF07.16-P-2009P

ENGINES 642 in MODEL 203.0, 164.1/8, 221.1/0, 251.0, 203.2, 251.1 up to model year 2008/YoM 07 

ENGINES 642.9 in MODEL 463.3 

ENGINES 642 in MODEL 461.3 

ENGINES 642 in MODEL 211.6, 219.3, 209.4/3, 211.2/0 

Main injection follows preinjection. Main injection is controlled by the start of actuation (injection timing point) and the actuation duration (injection period). The main injection quantity is calculated by the CDI control unit (N3/9) while taking account of information from the following sensors:

• Rail pressure sensor (B4/6), for the rail pressure
• Boost pressure sensor (B5/1), for the boost pressure
• Coolant temperature sensor (B11/4), for the coolant temperature
• Charge air temperature (B17/8), for the charge air temperature
• Accelerator pedal sensor (B37), for the accelerator pedal position
• Crankshaft Hall sensor (B70), for the engine speed
• Fuel temperature sensor (B50), for the fuel temperature
• Pressure sensor downstream of air filter (B28/5), for the absolute pressure (vacuum) in the intake tract (except model 463)
• Pressure sensor downstream of air filter, right cylinder bank (B28/5), for the absolute pressure (vacuum) in the intake tract (only model 463)

Main injection for the fuel injectors (Y76) is not initiated by the CDI control unit if one of the following statuses is present:

• The engine speed is > 4500 RPM
• Fuel temperature limit exceeded
• The rail pressure is too low
• An external intervention in the quantity regulation, e.g. by the Electronic Stability Program (ESP) exists
• Engine is in the overrun
• The engine is switched off

Component description for high pressure pump		GF07.02-P-3010P
Component description for fuel injector	Y76	GF07.03-P-6120P
Component description for crankshaft Hall sensor	B70	GF07.04-P-6220P
Coolant temperature sensor, component description	B11/4	GF07.04-P-6040P
Component description for charge air temperature sensor	B17/8 Model 164.8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 463	GF07.04-P-6050P
	B17/8 Model 461	GF07.04-P-6050GX
Component description for rail pressure sensor	B4/6	GF07.04-P-6210P
Component description for quantity control valve	Y94	GF07.05-P-6010P
Pressure regulator valve, component description	Y74	GF07.05-P-6020P
Hot film mass air flow sensor, component description	B2/6, B2/7 Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 463	GF07.07-P-6000P
	B2/5 Model 461	GF07.07-P-6000GX
Component description for intake air temperature sensor	B2/6b1, B2/7b1 Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 463	GF07.04-P-6070P
	B2/5b1 Model 461	GF07.04-P-6070GX
Component description for CDI control unit	Model 203, 209 N3/9	GF07.16-P-6000P
	Model 211, 219 N3/9	GF07.16-P-6000T
	Model 164, 463 N3/9	GF07.16-P-6000GZ
	Model 221 N3/9	GF07.16-P-6000SX
	Model 251 N3/9	GF07.16-P-6000RT
	Model 461 N3/9	GF07.16-P-6000GX
Accelerator pedal sensor, component description	Model 203, 209, 211, 219 B37	GF30.20-P-2010P
	Model 164, 463 B37	GF30.20-P-2010GZ
	Model 221 B37	GF30.20-P-2010SX
	Model 251 B37	GF30.20-P-2010RT