1 Intake manifold flap servo motor 2 Intercooler bypass flap servo motor The intake manifold flap has another function in addition to restricting the intake air for exhaust gas recirculation and closing the intake system when the engine is stopped. During the regeneration phase the intake manifold flap closes off the airflow via the intercooler,… Read More »
The diesel particulate filter differential pressure sensor measures the current pressure differential upstream and downstream of the diesel particulate filter in the exhaust gas stream. For this purpose, there is a pipe connection upstream and downstream of the particulate filter. The readings are converted by the diesel particulate filter differential pressure sensor into a voltage… Read More »
The exhaust system of the 1.6L Duratorq-TDCi (DV) engine incorporates a diesel particulate filter exhaust gas temperature sensor. The exhaust gas temperature required for burning off the diesel particulates (at least 500 °C to 550 °C) is detected by the diesel particulate filter exhaust gas temperature sensor and transmitted to the PCM. The temperature of… Read More »
1 IAT sensor 2 Intake manifold flap servo motor 3 Intercooler bypass flap servo motor During regeneration of the diesel particulate filter, a constant intake air temperature in conjunction with the intercooler bypass and the intake manifold flap is of great importance. For this reason, an additional IAT sensor is installed in the airflow, downstream… Read More »
1 Solenoid (in tank flap) 2 Tank flap switch (reed contact) The tank flap switch is incorporated into the fuel filler neck insert. The actuating solenoid is located in a bracket on the tank flap. The tank flap switch is a reed contact and informs the fuel additive control unit that the fuel tank is… Read More »
1 Connection to the fuel tank 2 Fuel additive pump 3 Piezo sensor The fuel additive pump unit consists of the fuel additive pump and a two-piece piezo sensor. The internal piezo sensor can only detect when the fuel additive tank is empty. In conjunction with the counter of the fuel additive control unit, this… Read More »
1 Fuel additive control unit A separate fuel additive control unit is responsible for fuel additive injection. This is installed on the right-hand side of the passenger compartment under the rear seat. It is connected to the PCM via CAN data bus. The fuel additive control unit detects when the vehicle has been refueled on… Read More »
1 Exhaust gas temperature sensor – diesel particulate filter 2 Diesel particulate filter differential pressure sensor 3 IAT sensor 4 Fuel tank flap switch and solenoid (in the tank flap) 5 Piezo sensor on fuel additive pump unit 6 Fuel additive control unit 7 PCM 8 CAN 9 DLC 10 Intercooler bypass flap servo motor… Read More »
Metallic catalysts, cerium and iron, are used as fuel additives. These accelerate burn-off of the diesel particulates and lower the temperature at which burn-off can occur. Each time after the fuel tank is filled, a metered quantity of fuel additive is injected into the fuel tank where it mixes with the fuel. When combustion takes… Read More »
The injector is connected to the fuel additive tank by means of a fuel pipe. The fuel additive pump generates pressure in the fuel pipe. The injector check valve opens and fuel additive is fed into the fuel tank.