CA2805012A1

CA2805012A1 - Axial rotary engine crank assembly

Info

Publication number: CA2805012A1
Application number: CA2805012A
Authority: CA
Inventors: Randy R. Goudie
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-23
Filing date: 2013-01-23
Publication date: 2014-07-23

Abstract

The invention includes an improved more fuel efficient engine design, using a crank disk C.V.
Joint shaft arrangement. This permits pistons and cylinders to be tilted to the side and rotate with the crank shaft assembly, while maintaining crank shaft to cylinder alignment. The head section of the engine contains five small cam shafts driven by a stationary worm gear which turn the cams as they rotate around it, controlling the valves. The cylinder block is cylindrical shaped held in place by two bearings, and rotates with the crank shaft. The exhaust manifold consists of a circular housing bolted to the mounting bracket; two mechanical seals rotate with the cylinder head to eliminate leakage. Variable displacement is achieved by means of a two piece crank case which allows the cylinder to be tilted increasing or decreasing piston stroke.
The Variable Displacement Axial Piston Rotary Engine therefore.
This invention includes a variable displacement axial piston Rotary engine particularly of the kind commonly known as internal combustion.
Background of the Invention Engines have been in use since the early 1800's; with design patents dating back as far. They are in common use in vehicles, aircraft and machinery. They are classed by their features with the conventional being most common.
Though engines are very popular, with increasing fuel prices and concern for the environment, improved more fuel efficient engines designs are desirable, and compactness and lightweight are sought after in the small aircraft industry.

Description

Description In particular advantageous embodiment of the invention illustrated comprises of an engine containing a disk C.V. joint and shaft crank mechanism Figure 3 part #1 attached to connecting rods figure 3 parts #4, inside housing. Pistons Figure 3 parts #5 are driven by internal combustion and cause the disk shaft and cylinder block to rotate, providing power to do work.
The intake and exhaust are regulated by a series of valves figure 3 parts #55, controlled by camshafts figure 3 part #56 driven off a stationary worm gear wheel figure 3 part #38. Spark is supplied to the plugs by means of wires and a brush and contact mechanism figure 3 parts #52 & 53. Part # 52 stationary being fixed to the mounting bracket, part # 53 fixed to the top pan and rotating with it. Exhaust sealing is acquired by means of a mechanical seal figure 3 parts #8 & 10 that draw air in at a pressure equal or greater than exhaust pressure.
This air then mixes with exhaust and is expelled through the exhaust system. Oil to lubricate the moving parts and bearings in the cylinder block and head is channeled through the C.V. joint by means of a connecting pin and held in place against the joint by a spring Figure 6 parts # 69 and 70. The oil then returns down the oil return tube tube inside the crank case to the base pan.
It is common in engines to have pistons that by means of internal combustion rotate crank a shaft. Most use conventional crank shafts. Axial piston engines use swash-plate and nutating disk cranking mechanisms which are inefficient at delivering power and noisy.
Crankshaft mechanisms like these however do not permit for the stroke of their pistons to be altered so each stroke requires the same amount of room to be filled and emptied and displacement can only be altered by shutting down one or more cylinders, so the volume of air can only be changed by restricting the intake or exhaust. This causes either a vacuumed or pressurizing effect an inefficiency known as pumping loss that causes drag on the engine.
I have found that these disadvantages can be overcome by means of the use of a crank disk C.V.
joint and shaft cranking mechanism figure 3 parts # 1, inside a split housing figure 3 parts # 23 &
25, which allows the angle of the cylinder in relation to the crank disk to be increased or decreased resulting in a change in stroke length and thus enables you alter displacement. The movement is acquired by means of a hydraulic cylinder or screw jack and can be controlled by a computer.
This can be done without causing pumping loss, and the design eliminate noise from swash plate and nunating disk, also allowing for a small compact engine design which can be built to burn any choice of fuel.

Claims

1. An internal combustion engine comprising of a crank disk C.V. joint (can use other means of allowing shaft to flex. E.g. Universal joint) and shaft mechanism with connecting rods attached to pistons inside a drum shaped cylinder block to be acted upon by combustion causing the crank, pistons and cylinder block to rotate providing power.

2. An engine as defined in claim 1 in which the cylinder block is held in alignment with the crank disk by means of a C.V. joint and shaft.

3. An engine as defined in claim 1 and claim 2 in which the crank housing is in two sections in order to allow for the increase or decrease of piston stroke.

4. An engine as defined in claim 1, claim 2 and claim 3 in which the intake and exhaust valves are opened by means of rotating cam shaft whose gears are driven by a stationary worm gear as they move around it.