Internal-combustion engines – Multiple cylinder – Having rotary output shaft parallel to cylinders
Patent
1998-03-03
1999-11-30
Yuen, Henry C.
Internal-combustion engines
Multiple cylinder
Having rotary output shaft parallel to cylinders
123 563, F01B 300
Patent
active
059923571
DESCRIPTION:
BRIEF SUMMARY
This invention aims at the construction of piston aggregates in general, such as internal combustion motors, compressors and hydraulic pumps, where the classic mechanism to transform motion-piston connecting-rod crank-shaft, is substituted by, a new "Mechanism to transform alternative straight line motion into a rotary one and vice versa" presented in the International Application N PCT/EP 95/03551 dated Nov. 9, 1996.
The internal combustion aggregates motors constructed according to this invention can be of two as well as of four stroke cycle aggregate motors, using naphtha (diesel) or benzine (gas), of small, medium, large or even very great power, and of an unlimited number of cylinders. They are described here below:
In Piston driven axial cylinder engine the cylinders are placed in circular form, having their axes parallel altogether and equidistant from each other. In the centre of the circle heaving its axis parallel with those of the cylinders, is the rotative rod (it will be called hereafter the "motor main shaft") which has in its lower extremity a pivot, whose centre with the due eccentricity is located outside the motor main shaft axis. In continuation of the motor main shaft axis, which is also the body's axis, but in a certain distance from the cylinders block, in the lower part of the body is placed the central pivot, having its centre on the motor main shaft axis. At the central pivot, a disc is is pivoted, whose centre fits with that of the central pivot. In the central point of the disc, forming one body with it and perpendicularly on it, there is a bar, whose free extremity is pivoted in the excentric pivot of the motor main shaft. In the periphery of the disc and corresponding to the cylinder axes, connecting rods are pivoted, which in the other extremities have the respective pistons pivoted.
During the revolving of the motor main shaft, the disc bar axis describes a cone, whose basis is the circle described by the excentric pivot centre, and whose apex is the centre of the disc that is the same of the central pivot centre. The disc itself, which is deprived of the freedom to revolve round the axis of the motor main shaft, takes periodically successive inclined positions, depending on the bar position. Consequently, the pistons, guided inside the cylinders do their alternative straight line motion. Vice-versa, as it occurs in ordinary internal combustion motors, where the cylinders get active one after the other, the alternative straight line motion of the pistons turns in rotative motion of the motor main shaft. In the case the aggregates are internal combustion motors, in order to actuate the valves, a second disc (called the "distribution disc") is placed upon the heads and co-axially at the motor main-shaft, from which it takes its rotative motion. In case of two stroke cycle motors where the working cycle is completed in one rotation of the motor main-shaft, the distribution disc is directly fastened in the motor main-shaft, being endowed in its periphery with a ring segment shaped lobe, which actuates by turns the exhaust valves located in a circle and if necessary, with a second lobe, in order to actuate the pump injectors, that are one for each cylinder. In case of four stroke cycle motors, where the working cycle is carried out in two rotations of the motor main shaft, the distribution disc makes a reduced number of the motor main shaft rotations, and in its periphery has four seperated segment ring sized lobes, placed with the due displacement in four concentric circles of the diameters corresponding to the valves. One couple of lobes commands the intake and exhausting valves of the uneven numbered cylinders, whereas the two other lobes command the valves of the even numbered cylinders.
Other ways to command the valves by lobes can be realized through rocker-arms or together rocker arms and pushrods, where the selective contacts are achieved by lobes placed in the disc either in concentric circles on the same plane but of various diameters, or in circles on parallel planes an
Benton Jason
Yuen Henry C.
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