Abstract: The present invention relates to the reciprocating internal combustion engine sector and more specifically concerns a mechanical system of linking to the master connecting rod for transmission of the motion of the pistons of an internal combustion engine consisting of a lever, which can be completely rigid or made up of a flexible part and a rigid part, and a connecting rod connected to it that rotates a crankshaft; two coaxial pistons with opposed heads that act practically in the same cylinder and have opposed combustion chambers are connected by two small connecting rods at the top of the said lever, which has its fulcrum—fixed or moving—in the engine bedplate.
Abstract: Improvements in a combustion engine performance and reduced temperature of the combustion engine therefore resulting in an increase in the brake thermal efficiency where the pistons move linearly within the combustion cylinder. A pair of one-way clutches is used to convert the reciprocating linear motion into rotary motion without a crank shaft and without friction or power loss in the engine. High pressure oil is used to intercool the piston and the cylinder walls and is used for lubricating the piston ring. This configuration will improve the engine efficiency and reduce emission and result in a low cost engine.
Abstract: An opposed-piston, opposed-cylinder OPOC engine is disclosed in which the central axis of the two cylinders is collinear. In four-stroke engines, this is possible with a built up crankshaft. Disclosed are connecting rod configurations that are suitable for a two-stroke engine that can be assembled to a unitary crankshaft, including both pullrods in tension and pushrods in compression. The configuration includes pistons arranged symmetrically, but with offset timing of the intake and exhaust pistons. The offset timing leads to a slight imbalance which can be partially overcome by having the center of gravity of the crankshaft offset from the axis of rotation.
Abstract: A crankshaft has a receiving platform for catching lubricant dropping from a main bearing assembly. The receiving platform has at least one wall disposed thereon. The wall has one point that is the furthest from the rotational axis of the crankshaft. One channel is defined in the platform and has an inlet disposed close to the point of the wall that is furthest from the rotational axis of the crankshaft. The channel has an outlet in the vicinity of a connecting rod bearing assembly, so that lubricant dropped on the receiving platform will flow to the connecting rod bearing assembly.
Type:
Grant
Filed:
December 21, 2011
Date of Patent:
June 24, 2014
Assignee:
BRP US Inc.
Inventors:
George Broughton, Andrew Findlay, John Valek, James E. Macier
Abstract: A radial, two-stroke uniflow internal combustion (IC) cylinder and multiple cylinder engine, the cylinder having a cylinder wall and a cylinder head, the cylinder head having an exhaust port, a fuel injector, and a spark means disposed through the cylinder head, a piston reciprocally mounted in the cylinder for movement alternately through compression and power strokes, and an inlet swirl port disposed through the cylinder wall providing fluid communication into the cylinder chamber, and having an annular exhaust air manifold in exhaust gas communication with each exhaust ports, and an exhaust-driven radial in-flow turbine that drives the inlet air compression.
Abstract: A radial, two-stroke uniflow internal combustion (IC) cylinder and multiple cylinder engine, the cylinder having a cylinder wall and a cylinder head, the cylinder head having an exhaust port, a fuel injector, and a spark means disposed through the cylinder head, a piston reciprocally mounted in the cylinder for movement alternately through compression and power strokes, and an inlet swirl port disposed through the cylinder wall providing fluid communication into the cylinder chamber, and having an annular exhaust air manifold in exhaust gas communication with each exhaust ports, and an exhaust-driven radial in-flow turbine that drives the inlet air compression.
Abstract: The horizontally opposed center fired engine improves on the traditional design of the horizontally opposed engines and center fired engines with a better engine geometry. The present invention utilizes four pairs of opposing pistons to compress a larger volume of air-fuel mixture within four different cylinders. The four different cylinders are radially positioned around a center axle in order to achieve a perfectly symmetric engine geometry. The center axle consists of two different shafts spinning in two different directions, which could drastically reduce engine vibrations in the present invention. Engine vibrations are caused by a change in engine speed and result in a loss of energy. Due to the design, the present invention will only experience energy loss in the form of entropy and friction. Thus, the present invention can convert a higher percentage of chemical energy into mechanical energy than any other internal combustion engine.
Abstract: An engine comprising: a shaft (6) having a first multilobate cam (5a) axially fixed to said shaft (6) and an adjacent second multilobate cam (5b) differentially geared to said first multilobate and a pair of diametrically opposed pistons (1a, 1b) which pistons of a pair of pistons are rigidly interconnected by a connecting plate (4) and wherein, reciprocating motion of said pistons imparts rotary motion to said shaft via contact between said pistons and the camming surfaces of said multilobate cams.
Abstract: Motion of an apparatus having reciprocal linear motion of an input member is converted into alternating rotary motion of a drive member such as a drive shaft or a drive gear. Additionally, a system is taught which uses linear motion, oscillating motion and rotational motion or any two or three with conversions and is adapted for using kinetic and electrical energy sources together and interchangeably. The system may be adapted for vehicular use. In one embodiment a two-cycle internal combustion engine is used in combination with the apparatus.