Housing wheel engine

A housing wheel engine comprising:

• a first set of planetary gearset;
• a second set of planetary gearset;
• wherein each set of the planetary gearset further comprising:
• a fixed big ring gear with a radius of the pitch circle being R;
• Rr of rolling gears with a radius of the pitch circle being r;
• and
• a sun gear with a radius of the pitch being R-2r formed therein;
• wherein the Rr here is a rotational number that Rr=R/r;
• wherein the Rr rolling gears having an eccentric pin mounted on each of the rolling gears respectively formed therein;
• wherein the eccentric pin having an eccentricity d from a center of the Rr rolling gears;
• wherein the eccentric pin having a hypocycloid running curve when the Rr rolling gears rolling inside the ring gear;
• wherein the sun gear having a spline hole located at the center;
• wherein the Rr rolling gears located inside of the big ring gear symmetrically about the center of the big ring gear;
• wherein the sun gear sited in a middle of the planetary gearset;
• the housing wheel engine further comprising:
• a first housing wheel half;
• a second housing wheel half;
• wherein the first housing wheel half and the second housing wheel half further comprising:
• a housing ring half;
• Rr pistons;
• Rr spokes;
• and
• a hub formed therein;
• wherein Rr spokes mounted on the housing ring half evenly with one end, and another end mounted on the hub;
• wherein Rr pistons mounted inside of the housing ring half and located on the same location of the spokes;
• wherein each of the spokes has a linear slot;
• wherein the spokes of the first housing wheel half having an angle 180°/Rr to the neighbor spokes of the second housing wheel half;
• wherein the first housing wheel half and the second housing wheel half face to each other and join together;
• wherein the first set of planetary gearset joins with the first housing wheel half by fitting the eccentric pins on the Rr rolling gears inside of the slot on the spokes;
• and the eccentric pins have farthest location from the center of the ring gear;
• wherein the second set of planetary gearset joins with a second of housing wheel half by fitting the eccentric pins on the Rr rolling gears inside of the slot on the spokes;
• and the eccentric pins having nearest location from the center of the ring gear;
• a generally cylindrical driveshaft having first and second splines formed therein;
• wherein the first and second housing wheel halves face to face pivotally mounted on a middle of the driveshaft between the first and second splines, and are able to spin freely around the driveshaft;
• wherein the sun gear of the first planetary gearset pivotally mounted on the first splines of the driveshaft;
• wherein the sun gear of the second planetary gearset pivotally mounted on the second splines of the driveshaft;
• a first engine cover half;
• a second engine cover half;
• wherein the first engine cover half and the second engine cover half further comprising:
• a bearing support;
• and
• a big ring gear base;
• wherein the bearing support locates at the axis of the engine cover half;
• wherein the big ring gear base locates at the axis of the inside of the engine cover half;
• wherein the big ring gear of the first set of the planetary gearset mounted on the first ring gear base;
• wherein the big ring gear of the second set of the planetary gearset mounted on the second ring gear base;
• and
• wherein the two ends of the driveshaft are mounted on the bearing support respectively.