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2. Solenoid (engineering) - Wikipedia

   en.wikipedia.org/wiki/Solenoid_(engineering)

   The term "solenoid" also often refers to a solenoid valve, an integrated device containing an electromechanical solenoid which actuates either a pneumatic or hydraulic valve, or a solenoid switch, a specific type of relay that uses an internal electromechanical solenoid to operate an electrical switch; for example, an automobile starter ...

3. Solenoid valve - Wikipedia

   en.wikipedia.org/wiki/Solenoid_valve

   Ordinary valves can have many ports and fluid paths. A 2-way valve, for example, has 2 ports; if the valve is open, then the two ports are connected and fluid may flow between the ports; if the valve is closed, then ports are isolated. If the valve is open when the solenoid is not energized, then the valve is termed normally open (N.O.).

4. Electrohydraulic servo valve - Wikipedia

   en.wikipedia.org/wiki/Electrohydraulic_servo_valve

   Servo valves are used to regulate the flow of fuel into a turbofan engine governed by FADEC. In fly-by-wire aircraft the control surfaces are often moved by servo valves connected to hydraulic cylinders. The signals to the servo valves are controlled by a flight control computer that receives commands from the pilot and monitors the flight of ...

5. Boost controller - Wikipedia

   en.wikipedia.org/wiki/Boost_controller

   A 3-port solenoid-type boost controller A 4-port solenoid-type boost controller (used for a dual-port wastegate). The purpose of a boost controller is to reduce the boost pressure seen by the wastegate's reference port, in order to trick the wastegate into allowing higher boost pressures than it was designed for.

6. Shutdown valve - Wikipedia

   en.wikipedia.org/wiki/Shutdown_valve

   In a solenoid-operated safety shutoff valve, a spring action closes the valve instantly when an electric current fails and the solenoid ceases to be energized. The solenoid circuit is generally arranged so that it is broken upon failure of any element of the system. This valve cannot be re-opened until the solenoid is again energized.

7. Solenoid - Wikipedia

   en.wikipedia.org/wiki/Solenoid

   A solenoid (/ ˈ s oʊ l ə n ɔɪ d / [1]) is a type of electromagnet formed by a helical coil of wire whose length is substantially greater than its diameter, [2] which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it.

8. Variator (variable valve timing) - Wikipedia

   en.wikipedia.org/wiki/Variator_(variable_valve...

   1997 Alfa Romeo 156 with the 1.6l, 1.8l and 2.0l petrol engines [6] 1998 Alfa Romeo GTV and Spider with the 1.8l and 2.0l petrol engines [7] 2000 Alfa Romeo 147 with the 1.6l and 2.0l petrol engines, [8] except for the model with the 105 bhp engine; 2004 Alfa Romeo GT with the 1.8l and 2.0l petrol engines; 2001 Fiat Stilo with the 1.8l [9] or 2 ...

9. Wastegate - Wikipedia

   en.wikipedia.org/wiki/Wastegate

   A wastegate is a valve that controls the flow of exhaust gases to the turbine wheel in a turbocharged engine system. [1]Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor.