Патент USA US2107098код для вставки
Feb. 1, 1938. c. H. WIEGMAN 2,107,098 ' INTERNAL COMBUSTION ‘ENGINE Filed April 11, 1951 3.; - gwwmtoz ’ ' . > ‘ ELHEEJVEE'H M55175!!!‘ . v ‘ v M” I Patented Feb. 1, 1938 _ mitts UNITED STATES PATENT orrles 2,107,098 INTERNAL COMBUSTION ENGINE 5‘ Clarence H. Wiegrnan, Detroit, lvliiohu " to Car Packard , Motor assignor ' Company, ‘Detroit, Mich, a corporation of Michigan Application April 11, 1931, Serial No. 529,349 _ (Cl. 123—30.2) The engine illustrated is of the four-cycle type This invention relates to internal combustion 5 7 Claims. engines. ' I and there is an air inlet port l4 and an exhaust outlet port !5 extendingthrough the rear por tion of the cylinder wall» adjacent the head. ‘ Ase sociated with the air inlet port is a housing I5 . t is advantageous and desirable inv some in stances, particularly where employed as the power plantforaeroplanes, that engines be constructed formed with a forwardly extending neck l1 hav with aminimum over-all dimension and an object of this invention is to provide such an engine through an arrangement of the fuel inlet and ex ing a passage l8 therethrough which communi cates with and forms a continuation of the air inlet port ill. The air inlet, formed by the pas sage 58 through the neck and the port -I 4 through the cylinder, extends in a plane perpendicular to ' haust ports and their valve mechanism. Another object of the invention is to provide an engine of the compression-ignition type in which the cylinder axis and opens towardthe front of the air intake port is arranged to induce move~ ment of the air charges in a manner such that rotation thereof inthe associated cylinder is ma terially assisted. the engine and discharges tangentially of the rearmost portion of the cylinder wall. This port is preferably in the form of‘a venturi in order to speed up the travel of air therethrough. A housing It is associated with the cylinder and is provided with a passage 20 which extends rear wardly from the cylinder in a plane perpendicular ; Still another‘object of the invention is to pro vide an engine in which the inlet and outlet ports extend perpendicular to the cylinder axis and through the wall thereof adjacent the head so that no valve housings and mechanism project to the axis thereof and communicates with the exhaust outlet port It extending through the beyond the top of the cylinder head. A further object of the invention is to provide an internal combustion engine in which the, cyl cylinder. The two housings l6 and i9 are each provided with a flat wall 42 'whichrbears against a ?at surface on the boss 2! formed on the rear inder is formed with a solid head from which ?ns 25 extend throughout its area to provide a maxi mum heat transfer along this surface. Other objects of the invention will appear from the following description taken in connection with - the drawing, which forms a part of this speci?ca tion, and in which: - . Fig. 1 is a sectional view through a cylinder of an engine, taken substantially on line I—l of Fig. 2, illustrating my invention; Fig. 2 is a vertical sectional view of the engine cylinder, taken on line'2—2 of Fig. 1; Fig. 3 is a fragmentary end view of one of the valve mechanisms and its housing with the cover plate removed. 7 Referring now to the drawing by characters of reference, I have illustrated my invention asso 40 ciated with an internal combustion engine of the compression-ignition type in which the air and fuel are mixed and compressed within a cylinder to form the fuel charge. A cylinder I9 is provided 45 with circular cooling ?ns H and secured to one end of the cylinder, and preferably formed inte grally therewith, is a solid head l2. There are no apertures or ports extending through the head, such as is customary with the poppet valve type of engine, and a plurality of ?ns l3 project from vthe outer wall of the head in spaced parallel re lation. These fins are designed so that the spaces therebetween will provide channels extending in the direction of the air stream which is utilized 55 to transfer heat from the engine. wall of the cylinder, and suitable securing means, such as bolts 22, fasten the housings to this boss. 25 7 The inner ends of the inlet and outlet ports are controlled by suitable valve means. As shown in the drawing there is a poppet valve 23 having a stem which extends through a portion of the housing l6 and having a head which cooperates with a seat formed in thecylinder wall. Aspring 24 bears against a retainer v25 secured to the 36 valve stem and engages a seat in the housing so , _ that it normally holdsthe valve in seated rela tion. This valve is opened by mechanism op 35 erated in a conventional manner by a moving part of the engine, not shown, which can be similar in construction to the mechanism for op erating. the exhaust valve 26. A stem of the exhaust 'valve; extends through awall of the housing 19 and the head thereof cooperates with a seat formed in the cylinder wall to close or open the port l5. There is a guide member 21 associated with the housing through which the 45 ‘valve stem extends and a coil spring 28 is ar ranged between a ?anged portion of the guide and a retainer 29 which is secured to the valve stem. Within the housing [9 there is pivoted a bell crank 38 which is actuated to open the valve by means 50 of push rod mechanism 3! actuated by a mov ing part of the engine in a conventional manner. The spring 28 normally maintains the exhaust valve in closed position and said valve is opened through the push rod actuating the bell crank. 55 2 The end of the housings can be closed by a cover, as indicated at 32. ‘ It will be observed that the air intake and ex what I claim is 2' 1. In an internal combustion engine, a'cylinder, ’ a head at one end of the cylinder, said cylinder ' haust valves. open inwardly of the cylinder and having air inlet and exhaust outlet ports extend— adjacent the'head, and the piston 33 recipro ing therethrough adjacent the head, said ports extending substantially. tangentially of the cyl inder wall, and valves associated with the interior cating within the cylinder is provided with a pocket 43 which extends adjacent the valves. This pocket is semi-circular in cross-section taken ' ends of the ports and extending radially of the transversely of the piston axis and is of a depth 10 such that it extends beyond the valve heads when cylinder. 2. In an internal combustion engine, a cylinder 10 Air is ' having a head at one end'and air inlet and ex drawn into'the cylinder during the suction stroke haust outlet ports extending therethrough at an the piston is at top dead center position. 7 of the piston through the passage l8 and the port ' l4'and tangentially to the rear- wall of the cyl 15 inder so that it will be introduced ina manner to cause its rotation within the cylinder and sub stantially without interference by the valve l4. During the compression stroke'of the piston, the rotating air is compressed and is ?nally contained 20 within the pocket portion'of the piston and the " associated walls of} the cylinder where the rota obtuse angle relatively and tangentially of the inner wall of the cylinder, inwardly opening valves extending radially through the cylinder 15 wall and controlling said ports, and a piston inv the cylinder having a segmental recess in the head end providing a combustion chamber *and a clearance forthe valves when in open position. 3. In an internal combustion engine, a joy] inder having a head at one endland airinlet and exhaust outlet' ports," said ports extending a high compression is introducedby means of through the cylinder in a relatively close relation 7 the nozzle 34. The nozzle ‘can be of any con— and tangentially of the v inner‘ surface of the ventional type for injecting'atomized liquid fuel ' cylinder, inwardly opening valves "extending ra—‘ 25 ‘ in variable quantities into the cylinder,’ and inthis dially' through the cylinder wall controlling‘ said ’ tion istcontinued, and‘ atomized liquid fuel under instance the injection deviceis arranged at the rear portion of the cylinder and projects through its wall toward theaxis‘of the cylinder in a path substantially transversely of‘ the rotating com ports,’ a piston having ahead with a segmental recessed portion providing clearance‘ space for. the valves when open and'va combustion chamber,’ pressed air. The piston is connected with the crank shaft of the engine in, a conventional man cylinder wall intermediate‘ the ports, said injec- - ner by means of the connecting rod 35. ‘Through the association of the valves, ports and injection device in a plane beneath the cylinder head, a minimum over-all dimension'is required _, and, consequently, when the engine is employed the combustion chamber in a direction whereby the incoming air will‘traverse the same. ' 4. In an internal combustion engine, a cylinder having ahead at one end, said‘cylinder being formed with an air inlet passage and an ‘exhaust outlet passage extending therethrough adjacent to travel is materially lessened, as compared with engines in which the valve and Valve housings the head, ' said passages being substantially straight and tangential to the inner wall of the cylinder heads. In addition, this arrangement of the ports and valves permits the operating mecha nism for the valves to be arranged at the rear of the cylinders, and it also allows the fuel injec tion device to be arranged at the rear of the cylinder so that fuel can be injected into a com bustion space formed bythe piston pocket which at the same time permits clearance vof the valves, and thus a high compression ratio can be attained. The arrangement of the fins entirely across the and engageable with the inner ends of said pas sages, said valves having stems extending radially of the cylinder and in, an angular relation to the axes of thepassages, and a piston in said cylinder having a segmental pocket inthe end affording clearance for the valves when open and'forming a combustion chamber with the: adjacent cylinder walls. ' '1 '- " *' ' 5. In an internal combustion engine, a cylinder which cannot be attained when valve housings are secured upon the cylinder head,and as a. result the head, said passages being angularly disposed > a high rate of heat, transfer ensues. While I have herein described in some detail front of the cylinder and the outlet passage opene a speci?c embodiment of my invention, which I deem to be new and advantageous and may, spe ci?cally claim, I do not desire it to be understood that my invention is limited to' the exact details w relatively with the inlet passage opening at the ing towards the rear of the cylinder, said passages being tangentially disposed with respect to‘ the inner wall of the cylinder, and valves controlling the flow through such passages.‘ 60 ‘ * of the construction, as it will be apparent that changes may be made therein without departing from the spirit or scope of my invention. 40 cylinder, valves opening inwardly of said cylinder ‘ ' having'a head at one end, said cylinder being formed with; an air inlet 'passage'and an exhaust outlet passage extending therethrough adjacent , cylinder head provides a heat transfer efllciency a tion device being arranged to discharge fuel into V as the power plant of an aeroplane, the resistance A‘ project through andare associated on top of the 4.?~~ and an injection deviceextending through the CLARENCE H. WIEGMAN.