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  2. Variable-length intake manifold - Wikipedia

    en.wikipedia.org/wiki/Variable-length_intake...

    BMW — DISA (DIfferenzierte SaugAnlage – "Differential Air Intake"), two stage: M42, M44, M54, N62TU, three stage: N52; DIVA (continuously variable length runners): N62, is the world's first continuously variable length intake manifold. [2] Citroën — XM 3,0 V6.24 (200 hp) used during 1991 to 1997, ZX Coupe 2.0 16v XU10J4 engine.

  3. Diverterless supersonic inlet - Wikipedia

    en.wikipedia.org/wiki/Diverterless_supersonic_inlet

    J-10B with a diverterless air intake displayed at Airshow China 2018. A diverterless supersonic inlet (DSI) is a type of jet engine air intake used by some modern combat aircraft to control air flow into their engines. It consists of a "bump" and a forward-swept inlet cowl, which work together to divert boundary layer airflow away from the ...

  4. Tumble flap - Wikipedia

    en.wikipedia.org/wiki/Tumble_Flap

    The set point of the tumble flap is adjusted by an electrical or vacuum-activated servo mechanism which is under the control of the engine management system.Tumble flaps are open or closed depending on engine operating states (related to engine speed and load), engine temperatures, combustion modes (characterized by air-fuel ratio), catalytic converter heating or cold start active or inactive etc.

  5. Naturally aspirated engine - Wikipedia

    en.wikipedia.org/wiki/Naturally_aspirated_engine

    Typical airflow in a four-stroke engine: In stroke #1, the pistons suck in (aspirate) air to the combustion chamber through the opened inlet valve.. A naturally aspirated engine, also known as a normally aspirated engine, and abbreviated to N/A or NA, is an internal combustion engine in which air intake depends solely on atmospheric pressure and does not have forced induction through a ...

  6. Acoustic Control Induction System - Wikipedia

    en.wikipedia.org/wiki/Acoustic_Control_Induction...

    The ACIS/TVIS System. Acoustic Control Induction System, or ACIS, is an implementation of a variable-length intake manifold system designed by Toyota.. Simply put, the ACIS system uses a single intake air control valve located in the intake to vary the length of the intake tract in order to optimize power and torque, as well as provide better fuel efficiency and reduce intake "roar".

  7. MIVEC - Wikipedia

    en.wikipedia.org/wiki/MIVEC

    When maximum power is demanded (high engine speed and load), intake valve closing timing is retarded to synchronize the intake air pulsations for larger air volume. Under low-speed, high load, MIVEC ensures optimal torque delivery with the intake valve closing timing advanced to ensure sufficient air volume.

  8. Swirl flap - Wikipedia

    en.wikipedia.org/wiki/Swirl_flap

    Swirl flap principle in a four-valve engine. A swirl flap is a small butterfly valve fitted to four-stroke internal combustion engines with at least two intake valves.It is installed inside or just before one of a cylinder's two intake ports, allowing to throttle its intake port's air flow, causing a swirl in the other intake port not fitted with a swirl flap.

  9. VEMS - Wikipedia

    en.wikipedia.org/wiki/VEMS

    Firmware revisions are issued very frequently and it is constant development. Latest firmware releases have many advanced features such as double continuous variable camshaft control, GPS and SD card logging, advanced motorsport features (N2O control, transbrake creep etc.).