Composite intake system and method of the rotary engine with variable intake manifold

Patent metadata

Field	Value
Publication number	US-10364778-B2
Application number	US-201615516873-A
Country	US
Kind code	B2
Filing date	Mar 16, 2016
Priority date	Feb 26, 2016
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A composite intake system and method of operating a rotary engine with variable intake manifold is provided. The system includes two switching valves in a secondary intake switching tube to change the intake method. When the rotary engine works under low speed conditions, it adopts the long intake manifold and the side-intake mode. When the rotary engine works under medium and high speed conditions, it uses the short intake manifold and the composite-intake mode. When the rotary engine works under ultra high speed conditions, it takes the short intake manifold and the peripheral-intake mode.

First claim

The invention claimed is:

1. A composite intake system of a rotary engine having a flywheel, said composite intake system comprising an air cleaner, an intake manifold, a primary intake switching tube, a variable intake manifold, a secondary intake switching tube, a side-intake manifold, a peripheral-intake manifold, a middle partition, a cylindrical body, a rotor, a speed sensor and controller (ECU); wherein a peripheral-intake port and a peripheral-exhaust port are distributed at a peripheral-wall of the cylindrical body, a side-intake port is arranged in the middle partition; the rotor is arranged in the cylindrical body; the middle partition, is fixed on a side face of the cylindrical body and located between the side face of the cylindrical body and the rotor; the primary intake switching tube is connected with the air cleaner via the intake manifold; the variable intake manifold includes a short intake manifold and a long intake manifold; the short intake manifold and the long intake manifold are connected with the primary intake switching tube at one end; first valve is arranged in the primary intake switching tube which is used to control the intake manifold to connect with the at least one of one end of the short intake manifold and the long intake manifold; the other end of short intake manifold and the long intake manifold is connected with the secondary intake switching tube; other end of the secondary intake switching tube is connected with the side-intake manifold and the peripheral-intake manifold, and another end of the side-intake manifold is connected with the side-intake port and another end of the peripheral-intake manifold is connected with the peripheral-intake port; the connection between the secondary intake switching tube and the side-intake manifold is controlled by a secondary valve and the connection between the secondary intake switching tube and the peripheral-intake manifold is controlled by a third valve; wherein the secondary valve and the third valve are arranged in the secondary intake switching tube; the speed sensor is mounted on the flywheel and it is connected with the ECU to detect a rotational speed of the rotor and transmit rotational speed signal to the ECU; and the ECU is connected with the first valve, the second valve and the third valve to control their opening and closing according to the rotational speed of the rotor.

2. The system according to claim 1 , wherein the first valve is a sheet-like structure: the short intake manifold is located on one side of the primary intake switching tube while the long intake manifold is located on the other side; the short intake manifold shares a same horizontal center line with the primary intake switching tube while the long intake manifold is at an upper location; and the first valve is fixed at a nozzle of the short intake manifold.

3. The system according to claim 1 , wherein the second valve and the third valve are a sheet-like structure; they are fixed at a joint between the secondary intake switching tube and the side-intake manifold and the peripheral-intake manifold, at a position close to the side-intake manifold and the peripheral-intake manifold.

4. The system according to claim 2 , wherein in the primary intake switching tube, a port of the short intake manifold is inserted at one side-wall surface of the primary intake switching tube; a port of the long intake manifold is inserted in the side-wall surface of the primary intake switching tube, and a direction of the long intake manifold is perpendicular to an orientation of airflow movement.

5. The system according to claim 1 , wherein the variable intake manifold is connected with the secondary intake switching tube; the short intake manifold shares a common pipe, which has a rotating shape, with the long intake manifold; an arc-over-form is used at joint of the common pipe and the short intake manifold; and a diameter of the short intake manifold is larger than that of the long intake manifold.

6. The system according to claim 1 , wherein the intake manifold and the primary intake switching tube are connected by a primary connecting flange; the variable intake manifold and the secondary intake switching tube are connected by a second connecting flange; the side-intake manifold and the peripheral-intake manifold are connected with the middle partition and the cylindrical body by a third connecting flange.

7. A method of operating the composite intake system for the rotary engine as claimed in claim 1 , wherein the speed sensor monitors a real-time revolving speed of the rotor, and then the real-time revolving speed signal is sent to the ECU; wherein different kinds of air intake methods that the ECU conducts via revolving speed of the rotor are as follows:
when the revolving speed of the rotor is below 2000 r/min, the rotary engine works under low speed conditions; the ECU controls the first valve to connect the Intake manifold with the long intake manifold, and the second valve (the third valve is closed) to connect the second intake switching tube with the side-intake manifold; in other words, the long intake manifold and the side-intake manifold are used;
when the revolving speed of the rotor is between 2000 r/min and 5000 r/min, the rotary engine works under medium and high speed conditions; the ECU controls the first valve to connect the intake manifold with the short intake manifold, concurrently regulates the second valve and the third valve to connect the second intake switching tube with the side-intake manifold and the peripheral-intake manifold; in other words, the short intake manifold and the side intake manifold are used; and
When the revolving speed of the rotor is more than 5000r/min, the rotary engine works under ultra high speed conditions; the ECU controls the first valve to connect the intake manifold with the short intake manifold, and the third valve (the second valve is closed) to connect the second intake switching tube with the peripheral-intake manifold; in other words, the short intake manifold and the peripheral intake manifold are used.

Assignees

• Univ Jiangsu

Inventors

• Pan Jianfeng
• Chen Wei
• Fan Baowei
• Lu Qingbo
• Lu Yao

Classifications

• F02D9/109

  having two or more flaps · CPC title

• F02M35/104

  Intake manifolds · CPC title

• F01C21/18

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F02B53/04

  Charge admission or combustion-gas discharge · CPC title

• F02D9/10

  having pivotally-mounted flaps · CPC title