Pistons d of followers 1 slide in cylinders b and are driven by expanding gas in the cylinders. Followers 1 carry rollers 2 which roll and slide along profiled cam groove a, consisting of six symmetrical portions. When pistons d consecutively move outward, cam disk 3 with groove a rotates about fixed axis A. The sequence and cycle of motion of followers 1 are controlled by special devices which are synchronized with the process of ignition of the fuel-air mixtures in the cylinders. Positive motion is achieved because the diameter of rollers 2 equals the width of groove a.
$3072$SmC,ML$