公开(公告)号：US10570739B2

公开(公告)日：2020-02-25

申请号：US15613237

申请日：2017-06-04

Applicant: Robert A Grisar

Inventor： Robert A Grisar

IPC: F01C21/08 ,  F02B55/10 ,  F02B55/04 ,  F02B55/14 ,  F02B55/16 ,  F02B53/10 ,  F01C1/344 ,  F01C21/04 ,  F01C21/06 ,  F01C21/10 ,  F01M11/02 ,  F01M11/00

Abstract: A circle-ellipse engine includes a stationary circular outer housing having a fixed elliptical inner cam surface, and a separate internal round rotor partitioned into equal segments that are populated by identical movable radial vanes. During rotation, the end of the vanes are positioned a precise, constant distance from the elliptical inner cam surface of the housing. During rotation, a variable height cavity is created representing the difference between the major and minor axes of the elliptical inner cam surface and the rotor face. During each rotation, aspirated air is continuously drawn into combustion chambers, compressed, mixed with fuel, ignited, and exhaust gas products are expelled.

公开(公告)号：US20180347363A1

公开(公告)日：2018-12-06

申请号：US15613237

申请日：2017-06-04

Applicant: Robert A. Grisar

Inventor： Robert A. Grisar

IPC: F01C21/08 ,  F01M11/02 ,  F02B55/10 ,  F02B53/10 ,  F02B55/16 ,  F02B55/04 ,  F01M11/00 ,  F02B55/14

CPC classification number: F01C21/0836 ,  F01C1/3446 ,  F01C21/04 ,  F01C21/06 ,  F01C21/106 ,  F01C21/108 ,  F01M11/0004 ,  F01M11/02 ,  F02B53/10 ,  F02B55/04 ,  F02B55/10 ,  F02B55/14 ,  F02B55/16

Abstract: A Circle-Ellipse Engine comprises a stationary circular outer Housing having a fixed elliptical inner cam surface, and a separate internal round Rotor partitioned into equal segments that are populated by identical movable radial Vanes. During rotation, the end of the Vanes are positioned a constant distance from the elliptical inner cam surface of the Housing. The internal round Rotor has the same radius as the minor axis of the elliptical inner cam surface. During rotation, a variable height cavity is created representing the difference between the major and minor axes of the elliptical inner cam surface and the Rotor face.The position of the radial Vanes is guided by the slots in the symmetrical Rotor, extending to the elliptical inner cam surface of the Housing. The precise extension is governed by a pin track machined into the dual End Plates.There are no pistons, camshaft, timing chains, valves, valve lifters, rocker arms, connecting rods, or wrist pins. As a benefit, size and weight are significantly reduced when compared to a reciprocating engine of similar horsepower. Normal aspirated air is continuously drawn into the engine when an adjacent pair of radial Vanes passes the air inlet port. Similarly, exhaust products are expelled after a combustion event when the pair of adjacent Vanes passes over the exhaust port.The resultant geometer results in a continuous implementation of the Otto Cycle; namely intake, compression, expansion or power stroke, and exhaust during a single rotation of the internal round Rotor.Because the Otto Cycle is executed each revolution of the Rotor, the Circle-Ellipse Engine achieves the same power as a conventional reciprocating engine of the same displacement and compression ratio, at half the RPM. This implementation greatly reduces component ware and extends the life and maintenance cycle by a factor of four. As a side benefit, the power losses and vibration common to all reciprocating engines are eliminated.