FIELD: internal combustion engines.
SUBSTANCE: invention can be used in internal combustion engines (ICE). Disclosed are methods and systems for device to create rarefaction in ICE inlet system. In one example, the vacuum device comprises Venturi device 250 upstream of the annular fixed part 220 to adjust the vacuum value supplied to the negative pressure device-consumer.
EFFECT: invention makes it possible to adjust the negative pressure value supplied to the vacuum consumer due to the Venturi device movement to the annular fixed part and from it with simultaneous provision of the required air-fuel ratio depending on the ICE load.
15 cl, 8 dwg
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