US1907354A - Two-cycle internal combustion engine - Google Patents

Description

May 2, 1933. R. HANSEN 1,907,354

TWO-CYCLE INTERNAL COMBUSTION ENGINE Filed Dec. 20, 1950 2 Sheets-Sheet l INVENTOR 1 I l N WITNBS: ATTORNEY May 2, 1933. R, N 1,907,354

TWO-CYCLE INTERNAL COMBUSTION ENGINE Filed Dec. 20, 1930 2 Sheets-Sheet 2 ATTORNEY Patented May 2, 1933 UNITED STATES PAT HANSEN, OF \VHITE CETY, FLGRIDA, AS$IGNOR OF TXVELVE PER CENT TO A. R. KERR, TWELVE ZEE TS D. A. PFJ-iRR, TXUELVE PER CENT T0 D. F.

MACDDNALD AND TWELVE PER GEE? FLORIDA TVO-CYCLE II ITEENAL O. 9. SUMMER, ALL OF VEROBELACH,

COMBUSTION ENGINE Application filed December 20, 1930. Serial No. 508,824.

This invention relates to a two-cycle internal combustion engine, the general object of the invention being to greatly reduce the number of moving parts, tosecure the maximum power with the minimum amount of fuel and to otherwise increase the efficiency of the engine, by providing means for compressing the charge in one cylinder and introducing it into another cylinder, where it is fired.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a longitudinal sectional view, with parts in elevation and parts broken away.

Figure 2 is a transverse sectional view.

Figure 3 is a view of the member 8.

Figure 4 is a view showing the chambers 13.

In these views, the numeral 1 indicates the cylinder block which contains the cylinders 2. each cylinder being of two diameters, with the larger lower diameter forming a compression chamber 3. A piston 4 is provided for each cylinder and the lower end of each piston is shaped to provide a compression cylinder 5 for the compression chamber 3. A depending part of each cylinder 2 forms a skirt 6 which projects into the combustion chamber and an apron 7 is formed in each compression cylinder 5. A member 8 is inserted in a recess in one side of the block and is held therein by a. cover plate 9 which is bolted or otherwise fastened to the block, as shown at 10. Partitions 11. 12 and 12 form with the member 8 and portions of the cylinders 2 chambers 13, each of which has a port l i connecting the lower part of the chamber with the interior of a cylinder, and partitions 15 form chambers 16 in the member 8. One of these chambers 16 is connected by a port 17 with a compression chamber 3 and a port 18 connects one of these chambers 16 with the chamber 13. An inlet manifold 19 is connected by a port'20 with each compression chamber 3 and an exhaust manifold 21 From the foregoing it will be seen that when a piston is in its lowest position, the inlet port 2'0 will be uncovered so that the explosive mixture from the manifold can enter the compression chamber 3 and then as the piston moves upwardly, the compression piston 5 will first cover the inlet port and then the apron 7 will cover the port so that the port remains closed during the upward stroke of the piston. The mixture compressed in the chamber 3 will pass through the port 17 into chamber 16 and from said chamber 16, the compressed mixture will pass into the combustion space of the next cylinder as soon as the port 14 of said next cylinder is uncovered by the downwardly moving piston therein. The mixture compressed in the second cylinder will flow into the chamber 16 from the port 17 of said-second cylinder and then pass through the port 18 into the chamber 13 and through the port 14 into the first cylinder when the piston of said first cylinder uncovers the port 14:. The flow of the compressed gases into each cylinder will cause the exhaust gases to flow 901;

through the port 22 into the exhaust manifold 21 and the scavenging effect is increased by forming the top of each piston with a baffle 26. Thus I have eliminated the usual valves and their operating parts, as the pistors and the aprons 7 control the ports. lhe mixture being compressed and heated in one cyllnder before being introduced into the combustion space of the next cylinder where it is still further compressed, causes the en- Each pair of cranks is gine to operate With the maximum efficiency with the minimum amount of fuel.

The usual ignition system including the spark plugs 27, may be used, though if the 5 mixture is compressed to an extent where combustion will be automatically produced, the ignition system may be eliminated.

It is further understood that injectors may be used in place of spark plugs 27, and that 19 the air manifold 19 may be designed for Diesel type of operation.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made iii-the construction and in. the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

03 lVhat I claim is An internal combustion engine comprising a cylinder block containing cylinders, each cylinder being of two diameters, the larger diameter being lowermost and forming a 3compression chamber. a piston provided in each cylinder and having its lower end shaped to form a compression cylinder for the compression chamber, a depending portion on each cylinder forming a skirt projected into 3Q 'the compression chamber, an apron formed in each compression cylinder, a member inserted in one side of the block, partitions formed with the member and portions of the cylinder to provide chambers. each of said sbjjlast named chambers having a port connecting the lower portion thereof with the interior of the cylinder, partitions constitut ing chambers in the member and one of the last named chambers having a port con1- mimunicating with the compression chamber and another port connecting another of said chambers with the chamber formed by the first named partition, an inlet manifold communicative with each compression chamber.

an exhaust manifold communicative with the lower portion of each cylinder, and a cover plate removably mounting the member in the block.

In testimony whereof I aflix my signature.

REGNER HANSEN.

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