By detecting the amount of boost and air density in the car's intake manifold, the car's electronic control unit or ECU can determine how much fuel is needed in the car's combustion chamber so that the air-fuel mixture is at its best. The engine control unit uses its signal to calculate a correction value for the boost pressure. The boost pressure sensor measures the absolute pressure before the throttle valve. They affect the air pressure delivered to the pneumatic and mechanical wastegate actuator.įig. Boost pressure sensors control the boost level produced in the intake manifold of a turbocharged or supercharged engine. As a complex piece of technology, a boost pressure sensor has been an impressive addition to engine technology. Boost pressure sensors are used in turbocharged engines to provide air pressure information and air and fuel ratios in order to regulate engine performance.
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