Vacuum switch: Difference between revisions

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Prior to effective engine control unit computers, vacuum switches were employed to regulate the flow of engine vacuums in automobiles. For instance, a dual port vacuum switch located in a port on the intake manifold monitored the coolant temperature in the coolant crossover. It received vacuum (port E on the switch) from the carburetor. 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 restriction. The switch monitored the temperature and when conditions were right it performed its designed function.

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 {{unreferenced|date=December 2009}}
-Prior to effective [[engine control unit]] computers, [[engine vacuum]] was used for many functions in an [[automobile]].  '''Vacuum switches''' were employed to regulate this flow. For instance a dual port vacuum switch located in a port on the intake manifold monitored the coolant temperature in the coolant crossover. It received vacuum (port E on the switch) from the carburetor. 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 restriction.  The switch monitored the temperature and when conditions were right it performed its designed function.
+Prior to effective [[engine control unit]] computers, '''vacuum switches''' were employed to regulate the flow of [[engine vacuum]]s in [[automobile]]s. For instance, a dual port vacuum switch located in a port on the intake manifold monitored the coolant temperature in the coolant crossover. It received vacuum (port E on the switch) from the [[carburetor]]. 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 restriction. The switch monitored the temperature and when conditions were right it performed its designed function.
 ==See also==
+* [[Automobile accessory power]]
-*[[Manifold vacuum]]
+* [[Manifold vacuum]]
-*[[Automobile accessory power]]
-GAYYYYYY
-{{automotive-part-stub}}
+{{Switches}}
 [[Category:Switches]]
+{{automotive-part-stub}}