Abstract
The authors have considered typical designs of sensors of mass air flow rate used in motor vehicles and established that the most perfect are film-type sensors. Analysis of modern means and methods for diagnostics of mass air flow rate sensors showed that there are no methods for their nondestructive inspection. The study presented in the paper is based on the use of a developed measuring device for creation of test modes. As controlled parameters the authors have selected a mass air flow rate, voltage from sensor test terminal, a position of the butterfly throttle, hourly consumption of fuel at variation of the ICE crankshaft rotation speed at the position of the butterfly throttle from 0 to 100 %. It is established that the most sensitive parameters are the mass air flow rate and the voltage of the sensor control contact.
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