HEXA

ENGINE 173 80 315.8 310.0 321.6 100 182.8 180.4 185.1 REFITMENT 1. Locate the TMAP sensor on intercooler outlet and fit one mounting bolt. 2. Connect the electrical connection to the TMAP sensor. 4.CIMAF SENSOR (Continental Integrated Mass Airflow Sensor ) This sensor gives Information about the amount of air quantity and temperature of the air entering in the engine. This input is used by the ECU for cor- rections of fuel quantity based on amount of air availability for optimization of exhaust gas circula- tion & the turbocharger control. NOTE While assembling, the AMF sensor the point of the arrow should be towards the Turbo charger. The operating principle is based on the heating of a diaphragm ( sensitive element containing two re- sistances upstream and downstream of the support ) in a by-pass duct through which the engine intake air flows. Two temperature dependent metal film resistors on thin glass substrates are mounted in the CIMAF flow channel. The resistors are connected with fixed resistors R1 and R2 in a bridge circuit. The bridge is balanced so that the control electronics heat RS to a fixed temperature differential relative to the intake air. The sensing resistor RT compensates for intake air temperature variations, holding the constant temperature offset of RS. The intake airflow con- verts heat from RS and the heating current must be dynamically increased by the control electronics to maintain the fixed offset temperature. The current flowing through RS is a measure for the mass air- flow and can be measured as a voltage drop across the fixed resistor R2. This signal is processed by the sensor and is output as either an analog or frequen- cy signal. NOTE The flow meter measures the air mass directly (not the volume) to eliminate problems of compensation correlated to the temperature, altitude, pressure