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  2. Mass flow controller - Wikipedia

    en.wikipedia.org/wiki/Mass_flow_controller

    All mass flow controllers have an inlet port, an outlet port, a mass flow sensor and a proportional control valve. The MFC is fitted with a closed loop control system which is given an input signal by the operator (or an external circuit/computer) that it compares to the value from the mass flow sensor and adjusts the proportional valve ...

  3. Mass flow sensor - Wikipedia

    en.wikipedia.org/wiki/Mass_flow_sensor

    MAF sensor in a 2006-2015 automotive diesel engine. 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 ...

  4. Proportional–integral–derivative controller - Wikipedia

    en.wikipedia.org/wiki/Proportional–integral...

    The transfer function for a first-order process with dead time is = + (), where k p is the process gain, τ p is the time constant, θ is the dead time, and u(s) is a step change input. Converting this transfer function to the time domain results in

  5. List of sensors - Wikipedia

    en.wikipedia.org/wiki/List_of_sensors

    Wheel speed sensor; Airbag sensors; Automatic transmission speed sensor; Brake fluid pressure sensor; Camshaft position sensor (CMP) Cylinder Head Temperature gauge; Engine crankcase pressure sensor; Exhaust gas temperature sensor; Fuel level sensor; Fuel pressure sensor; Knock sensor; Light sensor; MAP sensor; Mass airflow sensor; Oil level ...

  6. Venturi effect - Wikipedia

    en.wikipedia.org/wiki/Venturi_effect

    A flow of air through a pitot tube Venturi meter, showing the columns connected in a manometer and partially filled with water. The meter is "read" as a differential pressure head in cm or inches of water. Video of a Venturi meter used in a lab experiment Idealized flow in a Venturi tube

  7. MAP sensor - Wikipedia

    en.wikipedia.org/wiki/MAP_sensor

    It is a one-to-one relationship with an offset of -100 kPa for boost pressure. Thus, a MAP sensor will always read 100 kPa more than a boost sensor measuring the same conditions. A MAP sensor will never display a negative reading because it is measuring absolute pressure, where zero is the total absence of pressure.

  8. Ultrasonic flow meter - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_flow_meter

    Schematic view of a flow sensor. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and ...

  9. Idle air control actuator - Wikipedia

    en.wikipedia.org/wiki/Idle_air_control_actuator

    The actuator consists of a linear servo actuator servomotor that controls a plunger which varies air flow through the throttle body. The position of the servomotor and hence the amount of air bypass is controlled digitally by the engine ECU. This allows the engine's idle speed to be maintained constant.

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