FIELD: mechanical engineering; engines. SUBSTANCE: after starting of engine, preset ignition advance angle is decreased for the time of engine warming up and before termination of warming up, initial ignition advance angle is restored. Device for implementing this method has sliding rack installed on distributor body and hinge connected with octane selector. Rack is provided with slot and holes to receive stepped detent with spring. Sliding rack has movable and fixed parts. Fixed part is provided with flanging which straddles the movable part. Stepped detent is made in form of two-step cylinder. Upper larger diameter part of cylinder corresponds to diameter of holes in rack, and lower part, to width of slot in fixed portion of rack. EFFECT: enlarged operating capabilities. 2 cl, 1 dwg
