Engine | 470.9, 471.9, 473.9 in model 963 |
with code V2B (Actros model generation 5) | |
Engine | 470.9, 471.9, 473.9 in model 963 |
with code V2F (Actros S/M cab, model generation 5) | |
Engine | 470.9, 471.9, 473.9 in model 964 |
with code V2J (Arocs model generation 5) | |
Engine | 470.9, 471.9, 473.9 in model 964 |
with code V3L (Actros BM964 model generation 5) |
W07.16-1059-79
Shown on engine 471.9 with Euro VI standard |
A4 | Engine management control unit (MCM) | B617 | Charge air temperature sensor in charge air distributor | Y610 | Cylinder 3 fuel injector | ||
B600 | Crankshaft position sensor | B621 | Exhaust gas recirculation (AGR) differential pressure sensor | Y611 | Cylinder 4 fuel injector | ||
B601 | Camshaft position sensor | B622 | Rail pressure sensor | Y612 | Cylinder 5 fuel injector | ||
B602 | Fuel temperature sensor | B638 | Fuel filter module pressure sensor | Y613 | Cylinder 6 fuel injector | ||
B606 | Exhaust coolant temperature sensor | CAN 4 | Drive train CAN | Y621 | Exhaust gas recirculation positioner | ||
B608 | Charge air pressure and temperature sensor in charge air pipe | Y608 | Cylinder 1 fuel injector | Y642 | Quantity control valve | ||
B611 | Temperature sensor downstream of air filter (vehicles with Euro VI standard) | Y609 | Cylinder 2 fuel injector |
General
The idle speed has been parameterized in the engine management control unit. In order to operate ancillary equipment at its working speed, for example, the control unit for the drive control (CPC5) (A3a) can send its own request via the drive train CAN if the idle speed is supposed to be higher. Essentially, the higher engine speed is always regulated. In other words, if the idle speed required by the drive control control unit is higher than the idle speed parameterized in the engine management control unit, then the engine speed required by the drive control control unit is regulated and vice versa.
Throughout idling, the injection quantity is constantly adapted to the engine operating status, e.g. if the engine load condition changes or there is an increased fuel requirement (due to low outside temperatures).
To calculate the injection quantity, the engine management control unit mainly takes account of the following input factors:
Engine speed
Coolant temperature
Fuel temperature
Load request (specified torque)
Smoke limitation, smooth running control and altitude correction in the engine management control unit can also influence the injection quantity (period of actuation) as well as the start of actuation for the fuel injectors.
Smoke limit
The fuel quantity is limited via the smoke limitation characteristics so that virtually no output of smoke occurs.
Smooth running control
The smooth running control compensates for all of the differences in injection quantity in the individual fuel injectors.
Development of torque on the various cylinders can differ due to tolerances and wear on the individual fuel injectors. This leads to rough running of the engine. The turn rate of the crankshaft becomes slightly faster and slower. One particularly feels this when idling. The smooth running control can respond to rough running because it actuates every injection nozzle individually. It balances out the rotational speed fluctuations through slightly different injection quantities for the individual cylinder until all cylinders develop the same torque.
Altitude correction
The altitude correction is primarily designed in such a way that the exhaust gas turbocharger shaft speed, the compressor outlet temperature, and the turbine inlet temperature of the exhaust gas turbocharger as well as the air/fuel ratio λ (lambda) do not undershoot or exceed the specified limits. For this purpose, the exhaust gas recirculation rate (EGC rate), the start of actuation, and the actuation period (injection quantity) of the fuel injectors are adjusted.
Drive control (CPC) control unit, component description | A3a | ||
Engine management (MCM) control unit, component description | A4 | ||
Crankshaft position sensor, component description | B600 | ||
Camshaft position sensor component description | B601 | ||
Fuel temperature sensor component description | For vehicles with engine 470.9, 471.9 as of engine end number 032691, 473.9 | ||
For vehicles with engine 471.9 up to engine end number 032690 | |||
Coolant outlet temperature sensor component description | B606 | ||
Charge air pressure and temperature sensor in charge air pipe, component description | B608 | ||
Temperature sensor downstream of air filter, component description | Vehicles with code M5Z(Engine version Euro VI) | ||
Charge air temperature sensor in charge air housing, component description | B617 | ||
Exhaust gas recirculation differential pressure sensor, component description | B621 | ||
Rail pressure sensor component description | B622 | ||
Fuel filter module pressure sensor, component description | For vehicles with engine 470.9, 471.9 as of engine end number 032691, 473.9 | ||
For vehicles with engine 471.9 up to engine end number 032690 | |||
Component description for fuel injectors | Y608, Y609, Y610, Y611, Y612, Y613 | ||
Component description for exhaust gas recirculation actuator | Y621 | ||
Component description for the quantity control valve | Y642 |