FIELD: machine building.
SUBSTANCE: invention relates to engine building, particularly, to diagnostics methods and systems. Diagnostics method includes at least partial opening of the supercharging pressure regulator and control of the compressor recirculation valve to the closed position in response to the diagnostic request. Besides, it includes at least partial shutdown of supercharge pressure control after at least partial opening of supercharge pressure regulator. Adjustment of displacement of air flow rate through recirculation valve of compressor in response to regulation of position of recirculation valve of compressor to maintain pressure at inlet of central throttle in response to at least partial closing of pressure control of supercharging. Method includes control of compressor recirculation valve in compliance with displacement of air flow. Also disclosed is an embodiment of diagnostic method and diagnostic system.
EFFECT: technical result consists in improvement of pressure control in engine air intake.
20 cl, 4 dwg
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