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MAF sensor in a 2006-2015 automotive diesel engine. A mass (air) flow sensor (MAF) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its ...
By removing the MAF this restriction is purportedly eliminated, possibly improving engine performance. By moving the airflow measurement sensor from the intake plumbing to a point closer to the cylinders, the time lag from air moving past the sensor to reaching the cylinder can be reduced, thereby possibly improving throttle response.
Ram-air systems are used on high-performance vehicles, most often on motorcycles and performance cars. The 1990 Kawasaki Ninja ZX-11 C1 model used a ram-air intake, the very first on any production motorcycle. [2] [3] Ram-air was a feature on some cars in the sixties. It fell out of favor in the seventies, but recently made a comeback.
These vehicles have a MAF sensor, Air Temperature sensor, and when equipped with the 2.3L 4-cylinder, two spark-plugs per cylinder. This combination ensures the air is just warm enough to vaporize the droplets and does very noticeably improve performance and emissions at the same time in cold, northern winter weather. [citation needed]
Mass airflow sensor, used to find the mass flowrate of air entering a fuel-injected internal combustion engine; MAFless Tuning, a method of operating the fuel injection system on a gasoline-powered motor vehicle whereby the mass airflow meter is removed; Markranstädter Automobilfabrik, a German car-brand built from 1909 to 1923 in Markranstädt
The way they do this is during a deceleration of the vehicle when there is low absolute pressure in the intake manifold (i.e., a high vacuum present in the intake manifold relative to the outside air) the powertrain control module (PCM) will open the EGR valve and then monitor the MAP sensor's values. If the EGR is functioning properly, the ...
By using a blow-through method, the MAF won't be affected by the blowoff valve opening, since the pressure is vented before the air reaches the MAF. Other solutions include using a blowoff valve that recirculates the air back into the intake or using a manifold absolute pressure sensor (instead of an airflow sensor) to determine the amount of ...
This kind of electronic control is less common in piston-engined light fixed-wing aircraft and helicopters than in automobiles. This is due to the common configuration of a carbureted engine with a magneto ignition system that does not require electrical power generated by an alternator to run, which is considered a safety advantage. [12]
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