Rotary piston engine

Patent metadata

Field	Value
Publication number	US-11300044-B2
Application number	US-202117169466-A
Country	US
Kind code	B2
Filing date	Feb 7, 2021
Priority date	Jul 29, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A rotary piston engine is provided. The rotary piston engine includes a shell and a rotor, the rotating rotor is arranged in the shell and divides a rotor cavity into compression chambers with a variable volume, a plurality of combustion chambers rotating around a main shaft of the rotor are arranged on an outer ring of the shell, and any one of the plurality of combustion chambers is communicated with the compression chambers; the plurality of combustion chambers are in a transmission connection with the main shaft of the rotor via a transmission system, and each of the plurality of combustion chambers drives the main shaft of the rotor to rotate by a combustion of a compressed combustible gas mixture. The shell includes an upper cylinder cover and a lower cylinder cover, and a boss of the upper cylinder cover is fitted with a spigot of the lower cylinder cover.

First claim

What is claimed is:

1. A rotary piston engine, comprising a shell and a rotor, wherein
the rotor is arranged in the shell and the rotor is configured to divide a rotor cavity into compression chambers each with a variable volume,
a plurality of combustion chambers rotating around a main shaft of the rotor are arranged on an outer ring of the shell, and a combustion chamber of the plurality of combustion chambers is communicated with the compression chambers,
the plurality of combustion chambers are in a transmission connection with the main shaft via a transmission system, and
each of the plurality of combustion chambers drives the main shaft to rotate through a combustion of a compressed gas.

2. The rotary piston engine according to claim 1 , wherein
the shell comprises an upper cylinder cover and a lower cylinder cover, and a boss of the upper cylinder cover is fitted with a spigot of the lower cylinder cover;
a rotatable piston gear plate is arranged between the upper cylinder cover and the lower cylinder cover, support blocks are evenly distributed on an inner ring of the rotatable piston gear plate, and the support blocks are in contact with the boss in a manner of a rolling pair;
a cavity among the boss, the lower cylinder cover and adjacent two of the support blocks is the combustion chamber; and
the rotatable piston gear plate is in the transmission connection with the main shaft via the transmission system.

3. The rotary piston engine according to claim 2 , wherein
a bottom of each of the support blocks is in contact with a surface of the boss in a manner of the rolling pair, and two end faces of the rotatable piston gear plate are respectively connected to the upper cylinder cover and the lower cylinder cover via a plane bearing.

4. The rotary piston engine according to claim 2 , wherein
a wall surface of the rotor cavity is provided with a roller groove, a cylinder bearer is arranged in the roller groove, a first pin roller is mounted at a bottom of the cylinder bearer, and a first spring is mounted between the roller groove and the cylinder bearer for keeping the first pin roller in contact with an outer surface of the rotor during rotation of the rotor.

5. The rotary piston engine according to claim 2 , wherein
a first sealing assembly is provided between each of two end faces of the rotatable piston gear plate and a respective one of the upper cylinder cover and the lower cylinder cover,
a second sealing assembly is provided on each of the support blocks, and the each of the plurality of combustion chambers is sealed by the second sealing assembly and the first sealing assembly.

6. The rotary piston engine according to claim 2 , wherein
a directional valve is mounted on the upper cylinder cover near a spark plug,
a first end of the directional valve is located inside one of the plurality of combustion chambers close to the spark plug, and the directional valve is configured for causing the one of the plurality of combustion chambers close to the spark plug to rotate in a fixed direction and causing a volume of the one of the plurality of combustion chambers to change periodically;
a second end of the directional valve is connected to the rotatable piston gear plate via a rotary slider mechanism for causing the directional valve to avoid the support blocks and undergo a lifting movement.

7. The rotary piston engine according to claim 6 , wherein
the rotary slider mechanism comprises a protruding disk and guide blocks; wherein
the guide blocks having identical phase angle as the support blocks are provided on the protruding disk,
the protruding disk rotates synchronously with the rotatable piston gear plate, and during a synchronous rotation,
a guide block of the guide blocks is in contact with the second end of the directional valve to lift the directional valve up.

8. The rotary piston engine according to claim 2 , further comprising an exhaust device, wherein
the exhaust device is mounted on the shell, and the exhaust device contacts an inner wall of the combustion chamber for a forced exhaust by a rotation of the plurality of combustion chambers.

9. The rotary piston engine according to claim 8 , wherein the exhaust device comprises a piston, a piston rod, a second return spring and a cam mechanism;
the shell is provided with a piston rod groove in communication with the combustion chamber,
the piston at a first end of the piston rod enters the combustion chamber through the piston rod groove, and is in contact with the inner wall of the combustion chamber,
a second end of the piston rod is connected to the cam mechanism, and the piston rod reciprocates in the piston rod groove under an action of the cam mechanism; and
the second return spring is mounted on the piston rod to ensure the second end of the piston rod is in contact with the cam mechanism.

10. The rotary piston engine according to claim 8 , wherein the exhaust device comprises a paddle plate and a second spring, wherein
a paddle groove is provided on a stepped surface of the boss,
a first end of the paddle plate is mounted in the paddle groove by a revolute pair, and
the second spring is provided between the paddle groove and the paddle plate and the second spring is configured for causing a second end of the paddle plate to contact the inner wall of the combustion chamber.

11. The rotary piston engine according to claim 3 , wherein
a directional valve is mounted on the upper cylinder cover near a spark plug,
a first end of the directional valve is located inside one of the plurality of combustion chambers close to the spark plug, and the directional valve is configured for causing the one of the plurality of combustion chambers close to the spark plug to rotate in a fixed direction and causing a volume of the one of the plurality of combustion chambers to change periodically;
a second end of the directional valve is connected to the rotatable piston gear plate via a rotary slider mechanism for causing the directional valve to avoid the support blocks and undergo a lifting movement.

12. The rotary piston engine according to claim 4 , wherein
a directional valve is mounted on the upper cylinder cover near a spark plug,
a first end of the directional valve is located inside one of the plurality of combustion chambers close to the spark plug, and the directional valve is configured for causing the one of the plurality of combustion chambers close to the spark plug to rotate in a fixed direction and causing a volume of the one of the plurality of combustion chambers to change periodically;
a second end of the directional valve is connected to the rotatable piston gear plate via a rotary slider mechanism for causing the directional valve to avoid the support blocks and undergo a lifting movement.

13. The rotary piston engine according to claim 5 , wherein
a directional valve is mounted on the upper cylinder cover near a spark plug,
a first end of the directional valve is located inside one of the plurality of combustion chambers close to the spark plug, and the directional valve is configured for causing the one of the plurality of combustion chambers close to the spark plug to rotate in a fixed direction and causing a volume of the one of the plurality of combustion chambers to change periodically;
a second end of the directional valve is connected to the rotatable piston gear plate via a rotary slider mechanism for causing the directional valve to avoid the support blocks and undergo a lifting movement.

14. The rotary piston engine according to claim 3 , further comprising an exhaust device, wherein
the exha

Assignees

• Univ Jiangsu

Inventors

• Fan Baowei
• Wang Yuanguang
• Pan Jianfeng
• Zhang Yaoyuan
• Zeng Yonghao
• Liu Shaowen

Classifications

• F02B53/00 Primary

  Internal-combustion aspects of rotary-piston or oscillating-piston engines (internal-combustion aspects of rotary pistons or outer members for co-operation therewith F02B55/00) · CPC title

• F02B55/02

  Pistons · CPC title

• F02B2053/005

  Wankel engines · CPC title

• F02B53/04 Primary

  Charge admission or combustion-gas discharge · CPC title

• F02B55/14

  Shapes or constructions of combustion chambers · CPC title