Overcoming dead center on the crankshaft of internal combustion engines and steam engines

Description

The invention relates to a device for overcoming dead center on the crankshaft of internal combustion engines and steam engines, in which a power transmission lever is used, which is the point of application. the piston rod from the crank pin to the free end of the Lever relocated so that the working travel is extended and the idle return travel is shortened. ' There are already facilities to overcome dead center the crankshaft of internal combustion engines. A simple power transmission lever is used. the one in a backdrop or is led to enneir rocker. In these known devices, a special power transmission lever must be arranged for each cylinder or each piston. This disadvantage is eliminated in the subject of the invention in that two crankshafts parallel in the areas of two cylinders are mounted to each other and are connected to each other in opposite directions by gear wheels, the cranks being offset by 18o° from one another and a two-part force transmission lever is used, which can be displaced in the longitudinal direction and at both ends of which Points of attack for the two piston rods are. In this way, with the help of relatively few components, a practical transmission with dead point overcoming for two cylinders each created that work in opposition to each other.

[0005] The cylinders are preferably aligned with their longitudinal axes at the center point of the double curve or to the most favorable direction of the working curve. aligned. The drawing illustrates the subject invention in one embodiment. At two crankshafts 1, 2 a crank 3, 4 is attached. A two-part power transmission lever 5, 6 is by a sliding piece 7, the Part 6 is attached and protrudes into a bore 8 of the other part 5, slidable in the longitudinal direction and on the two crank pins 9 and ok attached. The piston rods 15 and 16 engage at the projecting ends i i and 12 at points 13 and 14 . The cylinders 17 and 18 are directed with their longitudinal axes obliquely to the outer curve 1g, which each have the points 13 and 14 of the Describe the piston rods 15 and 16 during the crank revolution. On the two crankshafts i and 2, a gear 22 and 23 is fixed, which mesh. This will make the two Power transmission lever parts 5, 6 on the two cranks 3 and 4 forcibly controlled evenly and consistently. This creates the Curves i9 and 24 for the piston stroke, with the stroke length always remaining the same. The device can be used in all internal combustion engines - as well as in steam engines.

Claims

[0011] PATENT CLAIMS: i. Overcoming dead center on the crankshaft of internal combustion engines and steam engines, wherein a A power transmission lever is used, which moves the point of application of the piston rod from the crank pin to the free end of the lever, so that the working path is lengthened and the idle return path is shortened, characterized in that in the area of ​​two cylinders (17, 18) two Crankshafts (1,:2) are mounted parallel to each other and connected to each other by gears (2,2,:23) rotating in opposite directions, with the cranks rotating by 180° are offset from each other and a two-part force transmission lever (5, 6) is used which is longitudinally displaceable within itself and at its two ends (i 1, 12) the points of application (13, 14) for the two piston rods (15, 16) are located.

2. Device according to claim i, wherein characterized in that the cylinders (17, 18) with their longitudinal axes are located at the center point of the double curve (i9) formed by the working and idle return path. 24) are aligned. or to the most favorable direction of the working curve (ig). Considered publications: German Patent Specifications No. 475 503, 330 887; Swiss patent no. 194 537; French patent no. 511 48; US patent no. 2 506 088.