NON-COMPRESSION INTERNAL-COMBUSTION ENGINE

Abstract: A method of operating a three-stroke internal combustion engine having a cylinder (1) and a piston (2) reciprocable in said cylinder, said piston having a crank rod (3) pivoted to the piston, the opposite end of the crank rod being rotatably mounted to a crank shaft (4) to be rotated under the influence of the reciprocating movement of the piston. The operating cycle of the engine comprises a suction stroke, an expansion stroke and an exhaust stroke. According to the invention, the suction stroke extends over a fraction only of the total stroke of the piston, an instant ignition of the fuel mixture sucked into the cylinder then being effected. The following expansion is effective during the remaining portion of the movement of the piston towards the lower end position in the cylinder.

Description: NON-COMPRESSION INTERNAL-COMBUSTION ENGINE The present invention relates to a three-stroke compound engine of internal combustion type. The purpose of the invention is to provide an internal combustion engine which is less power- -consumiπg than, engines known so far and which can be operated by mixtures of gasoline and alcohol or the like. A further purpose of the invention is to provide an internal combustion engine which for a desired out¬ put can be made smaller than conventional engines and which can be manufactured at lower costs. The purposes mentioned above are achieved by the invention defined in the claim. -- The invention w ll be described below with reference to the accompanying drawing in which FIG.. 1 illustrates- di agram atfcally • the sucti on stroke of the engine, FIG. 2 " illustrates di agrammatical ly the expansion stroke of the engine, and FIG. 3 illustrates di agrammati cal ly the exhaust stroke of the engine. The principles of the engine are illustrated in the figures which show a cylinder 1 and a piston 2 reciprocable therein, said piston having a crank rod 3 pivoted to the piston at one end thereof. The other end of the crank rod is rotatably mounted to the crank of a crank shaft 4 for converting the reciprocating movement of the piston to a rotational movement of the crank shaft. In the cylinder head there are provided an inlet or suction valve 5 and an outlet or exhaust valve 6 which are controlled so as to be opened and " closed by means not shown in the figures. FIG. .1 illustrates the suction stroke cf the engine. During this stroke the inlet valve 5 is open while the OMP piston is moving to the right as seen in the figure. The valve opening is dimensioned so that the total amount of fuel or fuel mixture required for the combustion during the following expansion stroke, will be sucked into the cylinder during a movement of the piston 2 comprising a fraction only of the total stroke of the piston. Then , the valve is rapidly closed, the fuel mixture su-cked into the cylinder at the same time being instantly ignited. The expansion obtained during the following combustion causes the piston 2 to continue the movement to the right over the remaining portion of the total stroke of the piston, the crank shaft 4 accordingly be ng rotated. When the piston 2 has reached the right hand end position in the cylinder, the outlet valve 6 will be opened. The moving direction of the piston will be reversed by the continued rotationarl movement of the crank shaft 4, and during movement of the piston 2 to the left the exhaust gases will be expelled through .the outlet valve 6. When the piston * has reached the left hand end position thereof, the outlet valve 6 will be closed and at the same time the inlet valve 5 will be- opened. Then, the cycle described above will be repeated As w ll , be gathered from the description above, the engine operates without any compression of the fuel mixture; the only pressure increase obtained is that which is due to the combustion of the fuel. To the crank shaft, two or more cylinder piston units of the kind described can be connected such that the crank shaft at any time is rotated under the influence of the piston movement in one of the cylinders

Claims: CLAIM Method of Operating a three-stroke internal combustion engine having a cylinder (1) and a piston (2) reciprocable in said cylinder, said piston having a crank rod (3) pivoted to the piston, the opposite end of the crank rod being rotatably mounted to a crank shaft (4) to be- rotated under the influence of the reciprocating movement. of the piston, the operating cycle of the engine comprising a suction stroke, an expansion stroke and an exhaust stroke, c h a r a c ¬ t e r ! ' z e d .in that the suction stroke extends over a fraction only of the total stroke of the piston, an nstant ignition of the fuel ixture sucked into the cylinder then being effected and the following expansion being effective during the remaining portion of the movement of the piston towards the lower end position thereof in the cylinder. OMPI

Inventors: WIDEN KARL-OLOF MAGNUS, WIDEN, KARL-OLOF, MAGNUS
Applicants: WIDEN KARL OLOF MAGNUS, WIDEN, KARL-OLOF, MAGNUS
Application year: 1982
Main classification: F02B41
IPC codes: F02B75