WO2016177017A1

WO2016177017A1 - Telescopic connecting rod of cylinder-type internal combustion engine

Info

Publication number: WO2016177017A1
Application number: PCT/CN2016/000224
Authority: WO
Inventors: 苏犁
Original assignee: 苏犁
Priority date: 2015-05-05
Filing date: 2016-04-26
Publication date: 2016-11-10
Also published as: CN104963935A

Abstract

Disclosed is a telescopic connecting rod (1) of a cylinder-type internal combustion engine, which differs from the connecting rod structure of the existing engine in that: the length of the connecting rod (1) can extend or contract in a certain range such that when sucking air, a piston (4) is actuated to work when the connecting rod (1) is driven by a crankshaft (3) to extend to the longest extent due to a negative air pressure inside a cylinder, and thus the suction stroke of the cylinder piston (4) is relatively decreased; when the piston (4) performs a compressing operation and a working operation, the crankshaft (3) drives the connecting rod to contract to the shortest extent due to a positive air pressure inside the cylinder, so as to push the piston to work, and the connecting rod returns to the original length thereof, and thus the suction stroke of the piston (4) is decreased relative to the work stroke, thereby forming an unequal-stroke operation of the piston of the engine. In this way, more pressure from the gas expansion caused by each combustion in the engine can be converted into work, and the invention has the beneficial effects such as little combustion consumption and high efficiency.

Description

Cylinder type internal combustion engine retractable connecting rod

Technical field

The present invention relates to a design and improvement of a mechanical field for a link structure thereof for the purpose of improving the fuel use efficiency of a cylinder type internal combustion engine. Thus, a retractable connecting rod of a cylinder type internal combustion engine is designed.

Background technique

Generally, existing internal combustion engines have four strokes of suction, compression, work, and exhaust. The air completes the suction and compression strokes through the piston, and its volume is compressed several times to several tens of times and mixed with the fuel when it is ignited. After the explosion, its volume will expand several times on the original basis, so that the expanding gas pushes the piston to do work. Since the pistons of the existing internal combustion engines are equal in the working strokes of suction, work, exhaust, and compression, only a part of the air pressure generated by the inflation gas is used for work, and the rest are silenced and exhausted. The tube is consumed and then drained. Imagine: when the engine is working, after each gas combustion in the cylinder is expanded, if the stroke of the cylinder piston inhaling and working is X, the average pressure of the explosive gas in the cylinder is 1 and the piston is working 100%; if the piston works The stroke is 2X, the internal combustion gas pressure in the cylinder is reduced to 50%, but the work is increased by 50%; when the piston work is 3X, the internal combustion gas pressure is reduced to 33%, the work is increased by 33%; when the piston is 4X The internal combustion gas pressure in the cylinder is reduced to 25%, and the work is increased by 25%; thus the piston work stroke is increased by 3 times, and the total work volume is 100%+50%+33%+25%=208%. It can be seen that through this way, the gas pressure of each post-combustion expansion can be more converted into work, and the efficiency of the internal combustion engine is multiplied. Therefore, the present invention can be designed such that the stroke of the suction of the piston is the work stroke. A fraction of the piston or the stroke of the piston is several times larger than the suction stroke. As for how many times is the most reasonable, it is the subject of further research.

Summary of the invention

[Correct according to Rule 91 17.05.2016]
1. A retractable connecting rod (1) for a cylinder type internal combustion engine, characterized in that: the length of the connecting rod can be changed and expanded within a certain range, and the sliding rod (1a) of the connecting rod is in the connecting rod sliding sleeve (1b) The cavity is slidable, and the sliding distance is called variable stroke-referred to as E; and a sliding anti-biasing device (1c) is provided on one end of the sliding rod (1a) of the connecting rod and the port of the connecting rod sliding sleeve (1b). Its reciprocating sliding is smooth. (Figure 3 C-C, D-D cross-sectional view).

2. The retractable connecting rod (1) according to the above requirement 1, wherein the connecting rod sliding sleeve (1b) is divided into two parts, the sliding rod (1a) of the connecting rod, the sliding anti-biasing device (1c) in the cavity, and Connecting rod sleeve (1b) After the assembly is completed, weld or mechanical engagement is performed at the H-slot (Fig. 3, G-G cross-sectional view) (Fig. 3, F-F cross-sectional view).

3. Variable stroke - the relationship between E and the parameters of the cylinder type internal combustion engine:

Compression ratio = (A + D - E) / A;

Cylinder displacement = (A + D) * R * R * 3.14;

Cylinder intake amount = (A + D - E) * R * R * 3.14;

The ratio of the amount of exhaust to the amount of inhalation is called the discharge ratio = A + D / (A + D - E).

Where: A is the distance between the piston pressure surface and the cylinder top compression; D is the rotation diameter of the crankshaft axis; R is the cylinder inner circle radius.

Detailed ways

The description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood, and the features and advantages of the present invention can be more clearly understood. The following is a detailed description of the following with reference to the drawings.

DRAWINGS

Fig. 1 is a structural schematic view showing a telescopic link (1) of a cylinder type internal combustion engine of the present invention.

2 is a schematic view showing the working state of the telescopic connecting rod (1) of the cylinder type internal combustion engine of the present invention.

[Correct according to Rule 91 17.05.2016]
Figure 3 is a schematic structural view of a telescopic connecting rod (1) of a cylinder type internal combustion engine of the present invention

among them:

[Correct according to Rule 91 17.05.2016]
1. Fig. 1 is a structural schematic view showing a telescopic connecting rod (1) of a cylinder type internal combustion engine of the present invention.

2. Fig. 2 is a schematic view showing the working state of the telescopic connecting rod (1) of the cylinder type internal combustion engine of the present invention. Among them: Figure 2-1, Figure 2-2, Figure 2-3 are the working state of the telescopic link (1) in the engine work phase; Figure 2-3, Figure 2-4, Figure 2-5 are scalable Schematic diagram of the working state of the connecting rod (1) in the engine exhaust phase; Figure 2-5 Figure 2-6 Figure 2-7 shows the working state of the telescopic connecting rod (1) in the intake phase of the engine; Figure 2-7 Figure 2-8, Figure 2-9, Figure 2-10 are schematic diagrams of the working state of the telescopic link (1) in the compression phase of the engine;

[Correct according to Rule 91 17.05.2016]
3 is a schematic structural view of a retractable connecting rod (1) of a cylinder type internal combustion engine according to the present invention. Among them: 1-retractable connecting rod; 1a-link sliding rod; 1b-link sliding sleeve, 1c-sliding anti-biasing device; 2-piston shaft; 3-crankshaft.

3. The present invention has significant advantages and advantageous effects as compared with the prior art.

3.1. The invention can be designed as follows: the working stroke of the cylinder piston of the internal combustion engine is several times of the suction stroke, and the pressure generated after each gas combustion expansion can be more efficiently converted into work, and the fuel use efficiency is improved to reduce the high-pressure exhaust gas emission. Reduce vibration and noise.

3.2. In the initial state of the cylinder piston of the present invention, since the connecting rod is in the stroke conversion process, the piston can maintain a temporary static state, which provides valuable time for the fuel injection and the oil and gas in the cylinder to be fully mixed, which is beneficial to the subsequent full combustion. .

4. Industrial applicability, feasibility, applicability, and advancement.

4.1 Feasibility analysis

Since the invention only improves the structure on the connecting rod of the existing conventional cylinder type internal combustion engine, the replacement of the connecting rod can realize the unequal working of the piston engine, and the feasibility is obvious.

4.2 Applicability analysis

Since the invention only improves the structure on the connecting rod of the existing conventional cylinder type internal combustion engine, the replacement of the connecting rod can realize the unequal working of the piston engine, and the feasibility is obviously not described.

4.3 Advanced performance analysis

Take the diameter of 100 single cylinder cylinder type internal combustion engine as the original machine: set its engine: A = 10mm; D = 100mm; compression ratio = 10:1; exhaust volume = intake.

Reconstructed by the original machine, replaced with the cylinder type internal combustion engine retractable connecting rod (1), called - improved machine, set its engine: A1 = 2.5mm; D = 100mm; piston variable stroke E = 75mm; After the connecting rod (1) is shortened, the length is increased by A-A1=10mm-2.5mm=7.5mm, so that the telescopic connecting rod (1) shortens the distance between the piston hole (2) and the center of the crankshaft hole (3) = the original machine The distance between the rod piston hole and the center of the crankshaft is +7.5 mm; the compression ratio = (A + DE): A = 10:1; the suction ratio = A + D: (A + DE) = 4: 1; the displacement itself is The inspiratory volume is 4 times, that is, the power stroke is 4 times of the self-inhalation stroke, and the others are unchanged.

Imagine: when the engine is working, after each gas combustion in the cylinder is expanded, if the stroke of the cylinder piston inhaling and working is X, the average pressure of the explosive gas in the cylinder is 1 and the piston is working 100%; if the piston works The stroke is 2X, the internal combustion gas pressure in the cylinder is reduced to 50%, but the work is increased by 50%; when the piston work is 3X, the internal combustion gas pressure is reduced to 33%, the work is increased by 33%; when the piston is 4X The internal combustion gas pressure in the cylinder is reduced to 25%, and the work is increased by 25%; thus the piston work stroke is increased by 3 times, and the total work volume is 100%+50%+33%+25%=208%.

If the ratio of air and fuel sucked by the original machine and the improved machine is the same, and the inhalation amount of the improved machine is 1/4 of the original machine, the fuel consumed by the improved machine is 1/4 of the original machine, although the machine is improved. It is 1/2 of the original machine (total work capacity = 1/4 × (100% + 50% + 33% + 25%) = 208% ÷ 4 = 50.2%), which is acceptable from the point of view of value engineering. If the cylinder of the improved machine is increased, the capacity of the inhaled air and fuel is doubled, which is 1/2 of the original machine. The new machine is equal to the original machine, but the fuel consumption of the new machine is the original machine. 1/2, its advanced nature is obvious.

The above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above examples, and all the technical solutions under the inventive concept belong to the protection scope of the present invention. It is to be understood that those skilled in the art will be able to devise modifications and refinements without departing from the principles of the invention.

Claims

A retractable connecting rod (1) of a cylinder type internal combustion engine, characterized in that: the length of the connecting rod can be changed and expanded within a certain range, and the connecting rod sliding rod (1a) is in the cavity of the connecting rod sliding sleeve (1b) Sliding; and a sliding anti-biasing device (1c) is provided at one end of the connecting rod sliding rod (1a) and the port of the connecting rod sliding sleeve (1b).
The retractable connecting rod (1) according to claim 1, wherein the connecting rod sliding sleeve (1b) is divided into two parts, the connecting rod sliding rod (1a), the sliding sliding anti-biasing device (1c) and the connecting rod sliding After the assembly of the sleeve (1b) is completed, the welding or mechanical engagement is performed at the H slit (shown in Fig. 3, GG sectional view) (Fig. 3, FF sectional view).