FIELD: engines.
SUBSTANCE: invention can be used in internal combustion engines. Method of changing compression ratio of internal combustion engine consists in changing volume of combustion chamber, which is provided by means of movement of control element, piston and rod (14). Connecting rod (14) is kinematically connected to crankshaft (13) and to control element. Kinematic connection is performed by double-arm broken lever. One arm of double-arm broken lever is made in the form of link (1) swinging on axis of control element. Second arm is made in the form of lever (11) acting on crankshaft (13). Rocker (5) of link (1) is connected to connecting rod (14) of at least one cylinder (16) of the engine. Control element is made in the form of at least one two-stage gearing. At least one gear stage is performed by worm gear pair.
EFFECT: simplifying the design of the device that changes the compression ratio.
8 cl, 10 dwg
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