FIELD: mechanical engineering; engines with volumetric and volumetric-film processes. SUBSTANCE: guide in form of spiral springs is installed in intake channel of cylinder head. One end of spring is rigidly secured in intake channel of cylinder head, and the other is coupled with drive mechanism. Spiral spring is installed in intake channel of cylinder head for changing the pitch in proportion with change in crankshaft speed by means of control unit connected with drive mechanism. EFFECT: reduced labour input in making the device, increased service life. 3 cl, 1 dwg
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