Exhaust gas recirculation, function - GF14.20-P-3000SM
ENGINE 113.986
ENGINE 113.987
ENGINE 113.988
ENGINE 113.989
The exhaust gas recirculation lowers the combustion temperature in the partial load range, whereby the NOX formation is reduced.
To do this, the exhaust gas recirculation valve (31/1) is discharged via the ERG pressure transducer (Y31/1) with vacuum pressure from the intake manifold depending on the performance mapping.
The exhaust gas recirculation pressure transducer is actuated by the ME control unit (N3/10) for exhaust gas recirculation using a PWM signal.
- Coolant temperature >60°C<110°C
- Engine speed <3500 rpm
- Engine in partial load range
The performance map for exhaust gas recirculation is fixed to provide for optimum fuel consumption. In this case as much exhaust gas as possible is recirculated without impairing engine running or exhaust emissions.
The inducted air mass is reduced by the quantity of exhaust gases which are recirculated. In line with this, the ME control unit meters less fuel to the engine.
| Fuel injection valves, component description | Y62 | GF07.03-P-6010SM | |
| Crankshaft position sensor component description | L5 | GF07.04-P-6010SM | |
| Coolant temperature sensor component description | B11/4 | GF07.04-P-6040SM | |
| Hot film MAF sensor component description | B2/5 | GF07.07-P-6000SM | |
| ME-SFI [ME] control unit component description | N3/10 | GF07.61-P-6000SM | |
| Exhaust gas recirculation valve component description | 31/1 | GF14.20-P-2009SM | |
| Exhaust gas recirculation pressure transducer component description | Y31/1 | GF14.20-P-2010SM | |
| Accelerator pedal sensor, component description | B37 | GF30.20-P-2010SM | |
| Component description of throttle valve actuator | M16/6 | GF30.20-P-2020SM |