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A mass (air) flow sensor (MAF) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine.
Intake air temperature -40 215 °C 10: 16: 2 Mass air flow sensor (MAF) air flow rate 0 655.35 g/s + 11: 17: 1 Throttle position 0 100 % 12: 18: 1 Commanded secondary air status Bit encoded. See below: 13: 19: 1 Oxygen sensors present (in 2 banks)
The air flow sensor was replaced by a MAP sensor, the diameter of the four individual throttle bodies was increased from 43 to 45 mm (1.69 to 1.77 in), the exhaust ports diameter were increased by 3 mm, the intake cam lift was increased from 7.9 to 8.2 mm (0.31 to 0.32 in), and the intake ports were significantly improved in shape and contour ...
MAP sensor data can be converted to air mass data by using a second variable coming from an IAT Sensor (intake air temperature sensor). This is called the speed-density method. Engine speed (RPM) is also used to determine where on a look up table to determine fuelling, hence speed-density (engine speed / air density).
Air flow meter; Air–fuel ratio meter; Blind spot monitor; Crankshaft position sensor (CKP) Curb feeler; Defect detector; Engine coolant temperature sensor; Hall effect sensor; Wheel speed sensor; Airbag sensors; Automatic transmission speed sensor; Brake fluid pressure sensor; Camshaft position sensor (CMP) Cylinder Head Temperature gauge ...
The intake charge was cooled by a water-to-air intercooler and the intake manifold design is Toyota's T-VIS. It has 8 independent ports and benefits from the inertia build up to improve engine torque at low and medium speeds by closing 4 ports below a certain RPM and throttle position to increase air speed and maximize fuel atomization and ...
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