V-engine with yoke
AssigneeR P & M Engines, Inc.
InventorMichael E. Jayne
Life of this patent
Estimating the term…
Abstract
A V-engine is provided with a scotch yoke and connecting rods attaching plural pistons to the yoke such that the power stroke of both pistons is substantially simultaneous and the return strokes are substantially silmultaneous. Piston dwell is introduced by virtue of the lateral and angular displacement of the pistons in their respective angularly disposed cylinders and, in addition, dwell is introduced by virtue of the scotch yoke configuration wherein the slot retaining a sliding block connecting the yoke to the throw of a crankshaft may be of various configurations, rectilinear, curvilinear and offset arcuate in configuration.
Claims16
An engine having a crankshaft disposed within a crankcase and comprising;
- at least a pair of cylinder means, each cylinder means having an axis;
- said axes each being orthogonally disposed with respect to an axis of said crankshaft,
- the axes of said pair of cylinder means being angularly disposed in V configuration with respect to each other substantially to define a plane;
- a master yoke assembly means engaging opposite sides of said crankcase mounted for movement orthogonal with respect to the axis of the crankshaft and in a direction in said plane and lying between said axes;
- a piston means disposed within each of said cylinder means for movement along said axis of said cylinder means;
- first means connecting each of said piston means to the master yoke assembly means for movement of said piston means relative to the master yoke assembly means;
- and
- second means connecting the master yoke assembly means to the crankshaft for movement of said crankshaft relative to said master yoke assembly means.
A V-engine having a crankshaft with a crankshaft axis and at least plural cylinders disposed substantially in a plane orthogonal to the crankshaft axis, each cylinder having a cylinder axis, the cylinder axes of said cylinders substantially intersecting at a point to form a V angle and defining a plane, and a yoke received within a crankcase for movement along an axis lying in the plane and within the V angle formed by the said cylinder axes, the yoke having a slot therewithin and a sliding block means disposed within the slot for movement therewithin to transmit motion between the yoke and a crank throw mounted on said crankshaft;
- the engine further comprising
- means connected to each of said pistons for rotation with respect to each of said pistons and connected to said yoke for rotation with respect to said yoke.
In a V-engine having at least a pair of cylinders, each cylinder of said pair having a cylinder axis, the said cylinder axes of said pair being angularly disposed with respect to each other substantially intersecting to define a plane, a piston in each cylinder, a connecting rod for each piston and having first and second ends, the first end being rotatably connected to said each piston, a crankcase with a crankshaft therein, the crankshaft having at least one crankthrow, and a sliding block rotatably mounted to said at least one crankthrow,
- the improvement comprising
- a yoke,
- means for slidably mounting the yoke to said crankcase,
- means for slidably coupling the yoke to the sliding block, and
- means for rotatably coupling th yoke to said two connecting rods.
Dependencies are inferred from the claim text.