A balancing mechanism in a conventional, multicylinder engine consisting of a mass linked to the static portion of the engine and dynamically linked to the engine crankshaft in such a manner as to establish an arcuate oscillation of the mass on rotation of the crankshaft for producing a primary harmonic shaking force and a secondary harmonic shaking force in the direction of greatest travel of the mass, and a secondary harmonic shaking force in a direction at right angles to said first-mentioned direction with these harmonic shaking forces adapted to balance other shaking forces developed within the engine. A crank-and-rocker mechanism is utilized in the balancing mechanism and the angular disposition thereof may be related to the position of maximum value of the engine harmonic shaking forces as distinguished from the dead center position of the engine.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application comprises a continuation of cognate applications, Ser. Nos. 66,181, filed Oct. 31, 1960 and now abandoned; 351,280 filed Mar. 9, 1964 as a continuation-in-part of Appln. Ser. No. 66,181, and now abandoned; 694,024 filed Dec. 20, 1967 as a continuation-in-part of Appln. Ser. No. 351,280, and now abandoned; 755,761 filed Aug. 8, 1968 as a continuation of Appln. Ser. No. 694,024, and now abandoned; and 879,439 filed Nov. 24, 1969 as a continuation-in-part of Appln. Ser. No. 755,761, and now abandoned, all of applicant and all entitled ENGINE.
Engines having multiples of two and three cylinders which are arranged in V configurations. These engines employ nonaligned crankpins and arbitrary included angles between cylinders. Through appropriate relationships between crankpins and the weight, residual linear inertial forces are substantially eliminated.
A crank drive for an internal combustion engine whose crankshaft is connected with a flywheel, for purposes of minimizing the vibrations of the crank assembly, the vibrating mass of the flywheel is smaller in the crank plane of the crankshaft than in the normal plane.
A reciprocating piston engine includes a housing; a cylinder disposed in the housing; a piston guided for reciprocation within the cylinder; a crankshaft connected to the piston for effecting a guided reciprocation thereof within the cylinder; at least two camplates connected to the crankshaft such that they rotate together with the crankshaft, each camplate defining a control contour thereon; two balancing masses operatively coupled to the camplates such that the camplates are effective for actuating respective ones of the balancing masses, each balancing mass comprising a pivoting arm; and coupling means connecting the balancing masses to one another thereby effecting a forced reciprocation thereof as a function of a rotation of the crankshaft. The coupling means include: two pivoting shafts disposed on each side of the crankshaft and extending parallel thereto, each pivoting shaft being connected to at least one balancing mass, each balancing mass being aligned in a direction of a main extension thereof perpendicularly with respect to each pivoting shaft; and coupling components connecting the pivoting shafts to one another.
An outboard engine assembly for use on a boat includes an engine having a substantially vertical crankshaft and a pair of banks of vertically juxtaposed horizontal cylinders, the banks being arranged in a V shape, the cylinders of the banks having axes angularly spaced from each other by an angle of 90.degree. or smaller. The outboard engine assembly has a propeller operatively connected to a downwardly extending vertical shaft coupled to the crankshaft. The engine and the vertical shaft is accommodated in a case assembly. The engine and the case assembly are installed on the hull of the boat by upper and lower support members. Vibroisolating rubber dampers are disposed between the boat hull and the upper and lower support members for isolating vibrations from the engine from the boat hull.
In a cutting machine having a reciprocating blade driven by a crank mechanism which includes an angularly balanced crank, the blade, the connecting rod which drives the blade and the connecting member which connects the blade to the connecting rod are dynamically counterblanced by a passive load, pair of connecting rods which drive the passive load in a direction opposite the direction of blade movement, and a pivoted link which cooperates with the pair of connecting rods to maintain the passiive load for movement in a predetermined path.
