Fuel combustion in a rotary piston internal combustion engine

Claim 2

A rotary piston for a rotary piston, internal combustion engine eccentrically mounted for rotation in a multi-lobe, trochoidal shaped engine housing and defining with the housing intake, compression, expansion and exhaust working chambers each of which vary in volumetric size as the rotary piston rotates within the housing in combination with ignition means for initiating fuel combustion disposed within the housing at a point relative to the direction of rotary piston rotation preceding the lobe junction between the compression and expansion combustionworking chambers, the rotary piston comprising: a. body portion having a plurality of contiguous peripheral surfaces which define with said housing said working chambers; b. a pocket in each of said peripheral surfaces; and c. each of said pockets comprising a relatively wide and deep depression and at least one channel substantially narrower and shallower than said depression and communicating with the depression and extending in a direction of piston rotation to a point spaced from the leading portion of the surface.

Claim 3

The piston of claim 1 wherein said narrow and shallow channel narrows in width from the depression in the direction of rotation and the bottom is inclined upwardly toward the associated peripheral surface in a direction away from said depression.

Claim 4

The piston of claim 1 wherein said depression narrows in width in a direction counter to the direction or rotor rotation.

Claim 5

The apparatus of claim 1 wherein said engine has a housing having an internal surface having a dual epitrochoidal configuration within which the piston rotates.

Claim 6

The apparatus of claim 1 wherein said piston is generally of triangular shape.

Claim 7

A rotary piston for a rotary piston, internal combustion engine eccentrically mounted for rotation in a multi-lobe, trochoidal shaped engine housing and defining with the housing intake, compression, expansion and exhaust working chambers each of which vary in volumetric size as the rotary piston rotates within the housing in combination with ignition means for initiating fuel combustion disposed in the housing at a point relative to the direction of rotary piston rotation preceding the lobe junction between the compression and expansion working chambers, the rotary piston comprising: a. a body portion having a plurality of contiguous peripheral surfaces which define with said housing said working chambers; b. each peripheral surface having a recess therein; and c. each recess comprises a relatively wide and deep depression and laterally spaced channels each of which is substantially narrower and shallower than said depression and in communicatioN with the recess and extending in the direction of piston rotation to a point spaced from the leading portion of the associated surface.

Claim 8

A rotary piston for a rotary piston, internal combustion engine eccentrically mounted for rotation in a multi-lobe, trochoidal shaped engine housing and defining with the housing intake, compression, expansion and exhaust working chambers each of which vary in volumetric size as the rotary piston rotates within the housing in combination with ignition means for initiating fuel combustion disposed in the housing at a point relative to the direction of rotary piston rotation preceding the lobe junction between the compression and expansion working chambers, the rotary piston comprising: a. a body portion having a plurality of contiguous peripheral surfaces which define with said housing said working chambers; b. each peripheral surface having a recess therein; and c. each recess comprises a relatively wide and deep depression and laterally spaced channels each of which is substantially narrower and shallower than said depression and in communicatioN with the recess and extending in the direction of piston rotation to a point spaced from the leading portion of the associated surface.

Claim 9

The piston of claim 6 wherein each of the channels narrows in width from the depression in the direction of rotation and the bottom is inclined upwardly toward the associated surface in a direction away from said depression.

Claim 10

The piston of claim 7 wherein said recess narrows in width in a direction counter to the direction of rotor rotation.

Claim 11

A rotary piston for a rotary piston, internal combustion engine eccentrically mounted for rotation in a two-lobe, epitrochoidal shaped engine housing and defining with the housing intake, compression, expansion and exhaust working chambers each of which vary in volumetric size as the rotary piston rotates within the housing in combination with ignition means for initiating fuel combustion in the compression working chamber and located within the housing at a point relative to the rotary piston rotation preceding the lobe junction between the compression and expansion working chambers to initiate fuel combustion in the working chambers before the rotary piston reaches top dead center, said piston comprising: a. body portion of generally triangular configuration having contiguous peripheral arcuate shaped surfaces which define with said housing said working chambers; b. each peripheral surface has a recess therein spaced from the next adjacent apices of the body portion; and c. each recess comprises a relatively wide and deep depression and laterally spaced channels each of which is substantially narrower and shallower than said depression; d. each of the narrow channels communicate at one end with the recess and extend in a direction of piston rotation in close spaced relation to the side edges of the associated peripheral surface to a point spaced from the leading apex portion of the piston.

Claim 12

A rotary piston for a rotary piston, internal combustion engine eccentrically mounted for rotation in a two-lobe, epitrochoidal shaped engine housing and defining with the housing intake, compression, expansion and exhaust working chambers each of which vary in volumetric size as the rotary piston rotates within the housing in combination with ignition means for initiating fuel combustion in the compression working chamber and located within the housing at a point relative to the rotary piston rotation preceding the lobe junction between the compression and expansion working chambers to initiate fuel combustion in the working chambers before the rotary piston reaches top dead center, said piston comprising: a. body portion of generally triangular configuration having contiguous peripheral arcuate shaped surfaces which define with said housing said working chambers; b. each peripheral surface has a recess therein spaced from the next adjacent apices of the body portion; and c. each recess comprises a relatively wide and deep depression and laterally spaced channels each of which is substantially narrower and shallower than said depression; d. each of the narrow channels communicate at one end with the recess and extend in a direction of piston rotation in close spaced relation to the side edges of the associated peripheral surface to a point spaced from the leading apex portion of the piston.

Claim 13

The piston of claim 9 wherein each pair of channels narrow in width from the depression in the direction of rotation and the bottom is inclined upwardly toward the associated surface in a direction away from the recess.