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2. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required. Up to a signal voltage of 2.5 Volts (which may vary with different fan/motor manufacturers) the fan will be in a stopped ...

3. Engine control unit - Wikipedia

   en.wikipedia.org/wiki/Engine_control_unit

   Delco ECU used in General Motors vehicles built in 1996. An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine.

4. Vacuum switch - Wikipedia

   en.wikipedia.org/wiki/Vacuum_switch

   The vacuum flowed through the switch to a vacuum solenoid (such as a heat riser, used to restrict exhaust allowing the engine to heat up faster). When the coolant heated to operating temperature the vacuum switch closed off the port (port S on the vacuum switch) turning off the vacuum to the heat riser. The result is to clear the exhaust ...

5. GMC Envoy - Wikipedia

   en.wikipedia.org/wiki/GMC_Envoy

   GMC Envoy XL. From 2002 to 2006, GMC offered the extended-wheelbase Envoy XL SUV. Sixteen inches longer in wheelbase and length than the standard-length Envoy, the longer body of the XL was designed for third-row seating. To improve access and rear-seat room, the roofline over the third-row seat was raised (shrouded slightly with a standard ...

6. General Motors Atlas engine - Wikipedia

   en.wikipedia.org/wiki/General_Motors_Atlas_engine

   Atlas is a name for a family of modern inline piston engines for trucks from General Motors, used in the GMT355 and GMT360 platforms. The series debuted in 2002 with the Oldsmobile Bravada, and is also used in the Buick Rainier, the Chevrolet TrailBlazer and Colorado, the GMC Envoy and Canyon, the Hummer H3, Isuzu Ascender and i-370, and the Saab 9-7X.

7. Mass flow sensor - Wikipedia

   en.wikipedia.org/wiki/Mass_flow_sensor

   The hot film MAF sensor works somewhat similar to the hot wire MAF sensor, but instead it usually outputs a frequency signal. This sensor uses a hot film-grid instead of a hot wire. [3] It is commonly found in late 1980s and early 1990s fuel-injected vehicles. The output frequency is directly proportional to the air mass entering the engine.

8. Variable reluctance sensor - Wikipedia

   en.wikipedia.org/wiki/Variable_reluctance_sensor

   A VR sensor used as a simple proximity sensor can determine the position of a mechanical link in a piece of industrial equipment. A crankshaft position sensor (in an automobile engine) is used to provide the angular position of the crankshaft to the engine control unit. The engine control unit can then calculate engine speed (angular velocity).

9. Vacuum cooling - Wikipedia

   en.wikipedia.org/wiki/Vacuum_cooling

   Vacuum cooling is generally used for cooling food products that have a high water content and large porosities, due to its efficacy in losing water from both within and outside the products. (Lettuce is an example of vacuum cooled products.) This is the most widely used technique for rapid cooling of food products which has been proven to be ...