US1734076A - Internal-combustion engine - Google Patents

Description

Nov. 5, 19 9. c. M. CLEMENTSON ETAL 1,734,076 I INTERNAL COMBUSTION ENGINE Filed Aug. 24, 1927 A tor-rev Patented Nov. 5,1929 p i Q stares ear-ear l nes CARL MARTIN CLEMENTSON AND SVEN OLA HEINRICH CLEMENTSON, F MATJMO,

SWEDEN 4 INTEBNALGOMBUSTION ENGINE Application filed August 24, 1927, Serial No. 215,202,'and in Sweden September 23, 1924.

(Eur invention relates to internal combuswall into two com artments of which the I a L w 0 7 u tion engines and more particularly to an imcompartment 11 on the one'sid'e of said wall proved valve structure for such engines. is intended for the fuel admission and the The object of the invention is to provide a other compartment 12 on the other side of the rotar Y valve structure des1 'ned for cont1nwall for the exhaust. f 5 2: 5O

uous rotation during the run of the engine to Rotation is imparted to the valve sleeve 4 which the said structure is applied and to by'meansof a gear13 affixed to a central stud operate with a very low speed of rotation and on one end wall of said. sleeve, which wall with the expenditure of a minimum amount closes the outer end of the compartment 11,

]Q of power; such structure being formed with said stud extending outside of the wall 3 of 55 large ports for the admission of the fuel mixthe cylinder head as shown in Fig. 1. The ture and for the exhaust. gear 13 is intended to be in Inesh with a. worm Further objects and advantages of the indriven from the main shaft of the engine (not vention will be explained in the course of the shown). i V

15 following detailed description; reference be- 14 represents a threaded boss for affixing 60 ing made to the accompanying drawing in a suitable pipe leading to the carbureter, and which Fig. 1 is a vertical section through the 1.5 represents a similar boss in communicaupper part of an engine cylinder, equipped tion with the compartment 12 and intended with the valve structure according to the infor connection of an exhaust pipe. The cas vention, along the axis of rotation of the lating 1 encloses a water spacef16 around the 65 ter, while Fig. 2 is a cross section along the cylinder 17, the piston of which is indicated broken section line m-00 yy in Fig. 1. by thenumerallS. V I

In the drawing, numeral 1 indicates the *The'operation of the valve structure is as casing of the engine, which casing may confollows: Y

tain either a single cylinder or a plurality of WVhen therotary valve sleeve 4 rotates, the integral cylinders, and 2 indicates the cylininlet ports 5 in thesame are brought into regder head. The latter comprises an inner wall ister with the inlet'ports 8 in the hollow core 3 surrounded by a cooling water jacket 16 member 7, and'sincethe ports 19 in the walli} which constitutes a continuation of the main of the cylinderlhead are arranged in alignwater jacket hereinafter referred to; and ment with the ports 5 the fuel mixture may 75 said wall is provided with ports 19 forming freely pass from carbureter and the boss. fuel admission openings to the cylinder, and 14 into the cylinder 17 at the fuel admission with a hollow rotary valve body in the form stroke. When the exhaust ports 6 at the other of a sleeve 4, which is provided with at least side of the wall 10 in therotary valve sleeve 4 four pairs of diametrically opposite inlet in the same manner are brought into register so ports 5, and with at least four pairs of diawith the exhaust ports 9 of the hollow core metrically opposite exhaust ports 6 the latmember 7, it will also be apparent that a'comter ports being axially displaced in relation municationwill be established between the to the inlet ports. l/Vithin the sleeve 4 is arcylinder 1'? and the exhaust pipe during the 40 ranged a non-rotating core member 7, which exhaust stroke. 'Since there are not losses is hollow and provided with ports 8 and 9 than four ports on'each side, and since these equal in number with and of a similar arports are equally spaced on the circumfer' rangement to the inlet ports 5 and the exence of the valvestructure, it is obviousthat haust ports 6 respectively. The said core the valve sleeve may rotate with a very low member 7 is divided b means of a artition s ee'd or in the case shown a s eed amountin '90 I having a large number'of port-openings at to only one-eighth that of the crank shaft, and it will be obvious that the driving means connecting the gear 13 with the crank shaft must be constructed so that the opening and closing of the inlet and exhaust ports are correctly timed in relation to the position of the pistons in their cylinders.

It will be obvious that the valve structure according to the invention will provide for a plurality of large and free passages both for admitting the fuel charge and for expelling the exhaust gases, and the tightening between the open and the closed position is very effective.

whilethe other is in communication at its outer end with the exhaust pipe, and means disposed. laterally with relation to the cylinder head for introducing fuel thereinto; said core member and said seat each having a large number of ports therein arranged in alignment, and said sleeve having the same number of ports so arrangedas to be brought into register with the first-mentioned ports a'large number of times during each rotation ofthe sleeve, the various ports being divided 'into two groups arranged one at each side of the partition wall each series eonjointly forming a single port of large total area.

7 2. In an internal combustion engine, a valve structure comprising,in combination, a cylinder head provided with a cylindrical seat, a

register simultaneously with the corresponding first-named set a number of times during each rotation of the sleeve, whereby rotation of said sleeve through a small angle will effect a substantially-instantaneous opening or closing of a ort unit.

3. An lnternal combustion engine, according to claim 2, in which the openings of the several sets of openings are arranged in diametrically-opposite pairs.

In testimony whereof we have aflixed our signatures.

SVEN OLA HEINRICH CLEMENTSON.

CARL MARTIN CLEMENTSON.

valve sleeve rotatably mounted in said seat, i

a hollow stationary core member secured to the cylinder head and ,fittinglcomformably within said sleeve, a'partition wall within the core memberdividing the same into two compartments, one of which is in communication with the exhaust pipe, and means for introducing, fuel into the cylinder head; said core member and said seat each having a large number of port openings therein ateach side ofthe partition Wall, each such number orset' of openings conj ointly forminga single port of large total area, the corresponding openings in the core member and seat aligning with each other; and said sleeve also each side of the partition wall,=each number v or set of sleeve openings likewise conjointly forming a single port of large total area and adapted to be brought periodically into

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