Power system of internal combustion engine with internal cavity cam rotor

A technology for internal combustion engines and cam rotors, applied to internal combustion piston engines, combustion engines, machines/engines, etc., can solve the problems of limited scalability of triangular rotor internal combustion engines, difficulty in improving rotor shaft torque, and high processing requirements for core parts. To achieve the effect of short motion transmission link, simple structure and large parameter range

Active Publication Date: 2019-06-28
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still key problems such as high processing requirements for core parts, too sensitive to wear, difficult adjustment of compression ratio, low thermal efficiency, etc., and it is still difficult to improve the combustion utilization rate
At the same time, similar to the piston internal combustion engine, the scalability of the triangular rotor internal combustion engine structure is also limited
In addition, when the expansion force generated by the fuel is converted into the power of the output shaft, there are natural defects in the transmission of force
Although the expansion force can push the rotor to rotate, it is difficult to increase the torque of the resultant force on the rotor shaft, and the proportion of internal friction is also too high

Method used

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  • Power system of internal combustion engine with internal cavity cam rotor
  • Power system of internal combustion engine with internal cavity cam rotor
  • Power system of internal combustion engine with internal cavity cam rotor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see attached Figure 4 , assuming that the central member is a fixed cylinder, the inner cavity cam rotor is a disc cam cavity with a near rest area and a far rest area, and the near and far repose angles are both slightly less than 180°. The number of sliders is 2, arranged symmetrically. The sealing relationship after assembly is the same as before, and will not be repeated. There are two intake ports and two exhaust ports, which are located inside the central member and are located on both sides of the slider. They are all represented by block valves, and the one with a small circle on the handle is the intake valve. A pair of intake and exhaust ports are a group, along the rotation direction of the inner cavity cam indicated by the arrow, the intake port in the same group is at the front, and the exhaust port is not limited. The ignition is set to two.

[0047] The two sliders divide the center member and the inner chamber of the inner chamber cam rotor into two ...

Embodiment 2

[0057] pass the following Figure 5 and 6 Demonstrate a slightly more complicated situation.

[0058] The central member is fixed, and the inner cavity cam member with the inner cavity cam profile is used as the rotor. There are three sliders on the central member, and its outer surface is evenly divided into three sections. The inner cavity cam profile has a near rest area and a far rest area. The angle of repose is as shown in the figure, that is, the near rest area of ​​the inner cavity cam profile. The central angle corresponding to the two sliders is similar, and the space between the two sliders is the working chamber or the combustion chamber. Figure 5 and 6 The corresponding valve states and the working process in the cavity are shown in different positions of the inner cavity cam member rotor. As in the previous example, there are three working chambers, and each chamber has two possible working processes initially, so there are 8 different combined working modes...

Embodiment 3

[0069] Figure 7 Further show variability. As long as the circumferential space is large enough, the number of sliders and the number of inner cam peaks (eg, near rest areas) can be arbitrarily increased. With the addition of the slider escapement, the size of the working space for completing each work cycle can also be changed.

[0070] The parameter relationships selected below are only for convenience and clarity of description, and are not limiting. In the figure, the near-resting sections of the inner cavity cam rotor are two evenly distributed, and the arc length of the near-resting section is slightly larger than the arc length corresponding to the two adjacent sliders, so that the two sliders are in a retracted state at the same time. The number of sliders is taken as 6 and evenly distributed, indicated by numbers. Each slider is controlled by the slider escapement, where "off" means the slider has been released by the escapement, "controlled" means the slider has b...

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PUM

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Abstract

The invention belongs to the field of internal combustion engines, and relates to an inner cavity cam rotor internal combustion engine power system. In the system, a cam mechanism is composed of inner cavity cams and a plurality of sliding block followers installed on central members in a cam cavity in the system, and a plurality of sealed working cavities distributed circumferentially are composed of the inner cavity cams and end members; the cam mechanism and the sealed working cavities change in volumes with the relative rotation of the inner cavity cams and the central members, and are fit to valves to finish four procedures, namely air intake, compression, acting and exhaust of Otto cycle therein; chemical energy generated from gas combustion is directly converted into mechanical energy output in the fixed-axis rotation form of the inner cavity cams or the central members. In the invention, a rotor fixed axis is driven to rotate and output power by high-pressure gas directly; the structure is simple, and the parameter adjustable range is wide. The flexible control is easy to achieve under the control of an additional sliding block escapement device, so that the positive and negative rotation is realized. Compared with piston internal combustion engine and triangular rotor internal combustion engine power systems, the inner cavity cam rotor internal combustion engine power system has many outstanding advantages.

Description

technical field [0001] The invention belongs to the field of internal combustion engines, and relates to an inner cavity cam rotor internal combustion engine power system. Background technique [0002] The piston internal combustion engine is the first internal combustion engine to come out. It is characterized in that the piston performs reciprocating linear motion in the cylinder, and the crankshaft rotary motion output is realized through the crank-slider mechanism. A complete four working process of intake, compression, power and exhaust is completed in the cylinder within two weeks of crankshaft rotation, that is, the Otto cycle. It is generally believed that the piston internal combustion engine has the advantages of high thermal efficiency, compact structure, strong maneuverability, and easy operation and maintenance. However, the work process of the output power of the piston internal combustion engine only accounts for a quarter of it, so the movement fluctuates g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B53/00F02B55/02F02B55/08
CPCF02B53/00F02B55/02F02B55/08Y02T10/12
Inventor 孙守林卞永宁王琳张光临洪鹏飞杨扬
Owner DALIAN UNIV OF TECH
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