DE689937C - Two-stroke internal combustion engine in a U-cylinder arrangement - Google Patents

Description

Two-stroke internal combustion engine in a U-cylinder arrangement The purpose of the invention is, a Däppe @ effect of internal combustion engines with only single-acting cylinders and pistons to achieve the same performance with each reciprocation of the pistons is; whereby the piston forces are transmitted to a crank by means of a connecting rod will.

With several cylinders arranged crosswise next to each other, the pairs connected in the opposite direction with arched tubular cylinder heads through flushing is achieved.

As is well known, the performance of the previous double-acting internal combustion engine with their internally cooled piston rod sealed by a stuffing box unequal, namely by the fact that the piston rod, which is not held weakly, increases the stroke volume the lower side of the piston is significantly reduced (air is power in an engine); comes in addition the inhibiting effect when the stuffing box is tightened.

Furthermore, it is proven by this subject matter of the invention that .also the. crankshafts coupled by gears of well-known aircraft engines and marine diesel engines are absolutely superfluous.

The following are all of the notable features of this invention highlighted: Practical arrangement of four 'single-acting cylinders and pistons for continuous flushing with excess air; Double action on a crank; Mass balancing and straight guidance of the pistons by means of a crosshead, therefore no lateral Wear of the cylinder, also low design in a horizontal arrangement, which is advantageous is suitable as an aircraft engine; with stationary machines, counterbalance of all force-transmitting * Parts; cylinder heads suitable for uniform expansion and higher pressure, the also exclude tearing due to their curved and tube-like shape, moreover few rotatable parts (bearings) in relation to the piston power and only that Train stressed linkage, which can therefore be kept easy; great achievement in a small room with little material and weight is in this Construction united. It should also be noted that the well-known evil was that premature burning of the piston rings is avoided because the actual Combustion of the fuel does not take place directly over the piston and this not sa dirty quickly.

Fig. I shows the front view of such a machine, with on the left Cut the one on top of the other and the front one in the middle, the cylinder.

Figure 2 is the top view of the same two-crank machine.

Fig.3 illustrates the same machine in a standing arrangement, suitable for ship propulsion.

Fig.q. and Fig. 5 are side and top views of the one-piece Four cylinder blocks.

Figure 6 shows the tie rods with connecting webs that are attached to each Side connect the cross head with the piston working outwards.

Fig. 7 shows one to be connected for two opposing cylinders Cylinder head.

The mode of operation of this machine is such that one pair of cylinders a for back and forth, b, for the process = i shaft revolution.

The connection of two cylinders through a common cylinder head is known, but not in a double arrangement for four united in one block Cylinder.

A double action with single-acting cylinders is also known, where opposing pistons work in tandem and an exceptionally high one or long machine position. Here a three-crank drive shaft has four To absorb piston forces with one revolution.

In contrast, the two-crank drive shaft of the subject of the invention to absorb eight piston forces.

For the sake of better understanding, both types of machine can be used here be compared with each other. The height or length of this new construction is the same of a normal type with crosshead guidance, apart from one opposite one Arrangement (Fig. I and 2), which is particularly suitable as a heavy oil aircraft engine and can be easily accommodated in the supporting decks.

While the pistons facing the crankshaft are directly on the crosshead and connecting rod act, the pistons working outwards are through the linkage h and connecting web h1 coupled to the cross head d.

With stationary machines of this type (Fig. 3), the two are after Cylinder open at the top and piston b kept correspondingly larger in diameter (Fig.5) for the purpose of the weight of all force-transmitting parts, such as connecting rods, cross heads, Linkage with connecting bars and the four pistons, lifted by the extra power, in order to compensate for the masses moving up and down.

The current state of the art in the field of internal combustion engines leaves a lot to be desired. The move away from the four-stroke engine is the first imperative, if higher performance is to be achieved; that's just because of the simple two-stroke possible and is also confirmed in the subject matter of the invention.

Claims (3)

PATENT CLAIMS: i. Two-stroke brake machine in U-cylinder arrangement, characterized in that two U-cylinders crosswise to form a cylinder block summarized are that the second U-cylinder (b) is perpendicular to the cylinder plane of the first U-cylinder arranged in the space between the legs of the first U-cylinder (a) is, with the open ends of both U-cylinders facing opposite, so that the pistons of the cylinders facing the crankshaft are directly connected by crossheads and connecting rods act on the crank, while the pistons are in the of the crankshaft remote cylinder (b) by means of rods (h) and connecting webs (kt) with the Crossheads are connected. 2. Two-stroke internal combustion engine in U-cylinder arrangement according to claim i, characterized in that one unit each with a four-cylinder block on both sides of a crankshaft provided with two throws offset by 18o ' are arranged. 3. two-stroke combustion engine according to claim i, characterized in that that the upward-acting cylinders and- Pistons are kept correspondingly larger in diameter, reducing the weight of all Power-transmitting parts such as connecting rods, cross heads, rods with connecting bars and pistons, through which the resulting additional power of these cylinders is canceled.