What Does The Map Sensor Do
In other words it provides manifold pressure information to the ecu or electronic control unit of the engine. The map sensor also known as the manifold absolute pressure sensor is a necessary component of your vehicle s fuel injection system.
Map Sensor Manifold Absolute Pressure Explained Youtube
Map sensors measure the air pressure in your intake manifold which helps the engine s computer determine air fuel ratios.
What does the map sensor do
. Map sensors are set to zero from the factory. The manifold absolute pressure map sensor is used by the powertrain control module pcm for engine load input. A map sensor is an electronic control that works in conjunction with the intake manifold a system of tubes and chambers that carry a mixture of air and fuel to the intake valves. Map sensor map or manifold absolute pressure sensor is basically made to detect or measure the electronic control system of the internal combustion engine.If the map were to go bad you will likely know it. The map sensor measures the absolute pressure inside the intake manifold of the engine. In some vehicles a mass air flow maf sensor is used. In fuel injected automotive engines a manifold absolute pressure map sensor is used to continuously monitor the amount of air flowing into the engine so the computer can calculate air density adjust the amount of fuel to spray into the combustion chamber and adjust the ignition timing.
The ecm uses map sensor data to run crucial calculations such as engine load fuel injector pulse and spark advance. As you may know the intake manifold is responsible for distributing the air and fuel mixture from the internal combustion chamber into each cylinder. With the car off and the key on the map sensor will read zero at sea level. Engines that use a map sensor are typically fuel injected.
The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine s electronic control unit ecu. The manifold absolute pressure sensor map sensor is one of the sensors used in an internal combustion engine s electronic control system. Map is an acronym for m anifold a bsolute p ressure. When at rest the map sensor reads atmospheric pressure at sea level 29 93 in.
The pcm uses this input as well as others to calculate the correct amount of fuel to inject into the cylinders. The importance of a map sensor.
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