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2. Hyundai Theta engine - Wikipedia

   en.wikipedia.org/wiki/Hyundai_Theta_engine

   Theta's EMS (engine management system) software is EMS-II from Siemens VDO and the 32-bit PCM (Powertrain Control Module) calculates the amount of intake air by utilizing a contamination-proof hot-film type MAF (mass air flow) sensor. The first version of the Theta Engine had three variants, 1.8L, 2.0L and 2.4L.

3. Mass flow sensor - Wikipedia

   en.wikipedia.org/wiki/Mass_flow_sensor

   Mass flow sensor. 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. Air changes its density with temperature and pressure.

4. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/OBD-II_PIDs

   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)

5. MAP sensor - Wikipedia

   en.wikipedia.org/wiki/MAP_sensor

   The manifold absolute pressure sensor (MAP sensor) is one of the sensors used in an internal combustion engine 's electronic control system. Engines that use a MAP sensor are typically fuel injected. The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit (ECU).

6. Flow measurement - Wikipedia

   en.wikipedia.org/wiki/Flow_measurement

   In many late model automobiles, a Mass Airflow (MAF) sensor is used to accurately determine the mass flow rate of intake air used in the internal combustion engine. Many such mass flow sensors use a heated element and a downstream temperature sensor to indicate the air flowrate. Other sensors use a spring-loaded vane.

7. Jetronic - Wikipedia

   en.wikipedia.org/wiki/Jetronic

   Jetronic is a trade name of a manifold injection technology for automotive petrol engines, developed and marketed by Robert Bosch GmbH from the 1960s onwards. Bosch licensed the concept to many automobile manufacturers. There are several variations of the technology offering technological development and refinement.