WO2006039833A1

WO2006039833A1 - Intake and exhaust system for four stroke internal combustion engine

Info

Publication number: WO2006039833A1
Application number: PCT/CN2004/001156
Authority: WO
Inventors: Pan-Our Chou
Original assignee: Pan-Our Chou
Priority date: 2004-10-12
Filing date: 2004-10-12
Publication date: 2006-04-20

Abstract

A intake and exhaust system for four stroke internal combustion engine is disclosed. It includes a cylinder block containing a combustion chamber and a crankshaft connected to a piston with a connecting rod, an intake and an exhaust manifold provided separately with a rotating valve and communicated each other with the combustion chamber, and at least two valve stems provided in intersection of the intake and the exhaust manifold. The valve heads are respectively provided at the corresponding ends of valve stems and they are opened and closed in the same direction by the cams provided at the opposite ends of the valve stems. Thus, according to the invention, the disadvantage of the common technique is overcome, the efficiency of the volume and exhaustion are enhanced and the output is increased.

Description

Intake and exhaust system of four-stroke internal combustion engine

The invention relates to an intake and exhaust system of a four-stroke internal combustion engine, which is a driving device that causes the valve stem to open and close along with the gates on the intake and exhaust manifolds, and simultaneously moves together. When gas is gas, the mixed oil and gas or air can quickly flow into the combustion chamber of the cylinder body. Conversely, when the exhaust gas after combustion is discharged, the combustion exhaust gas can be quickly discharged out of the combustion chamber of the cylinder body, thereby improving the volumetric efficiency during intake or exhaust. In turn, the output power is increased. Background technique

Referring to FIG. 1 , it is a generally known reciprocating piston internal combustion engine. The internal combustion engine is provided with a cylinder body 100 . The cylinder body 100 is provided with a crankshaft 110 . The crankshaft 110 is connected to the movable wheel 120 on the outer side of the cylinder body 100 . On the other side of the cylinder body 100, a timing gear 130 is coupled to the other timing gear 140. The crankshaft 110 is pivotally provided with a connecting rod 150. The connecting rod 150 is disposed on the crankshaft 110. The other end is connected to the piston 160 so that the rotational motion of the crankshaft 110 is converted into a linear motion by the link 150, and the piston 160 is linearly reciprocated. Furthermore, an eccentric shaft 170 is disposed in the cylinder body 100, and the eccentric shaft 170 is parallel to the crankshaft 110, and the eccentric shaft 170-end protrudes out of the cylinder body 100 to be in contact with the timing gear 140, and the eccentric shaft The two ends are respectively provided with cams 171 in different directions, and the cams 171 are respectively connected with a valve rod 180, and the other end of the valve rods 180 is respectively provided with a valve head 181, and the valve rods 180 respectively stay in, The exhaust manifolds 190, 200 enter the passage openings 191, 201 of the combustion chamber 300 in the cylinder body 100 for use as inlet and outlet control, and a spring 182 is sleeved on the valve stem 180, respectively. A cylinder body cover 101 is attached to the top end of the cylinder body 100, and a spark plug 102 is mounted on the cylinder body cover 101.

As described above, when the air is inflated, the one-side timing gear 130 can be rotated by the crankshaft 110, and the other timing gear 140 can be rotated to rotate the eccentric shaft 170, thereby causing the eccentric shaft 170 to rotate. The upper cam 171 is reversed, but the direction of the cam 171 is different. Therefore, when the intake operation is performed, the valve lever 180 that controls the intake manifold 190 moves upward under the toggle of the engaged cam 171. The valve head 181 is disposed away from the passage port 191, so that the mixed oil and gas can smoothly flow into the combustion chamber 300 of the cylinder body 100, and the valve head 181 of the valve stem 180 that controls the exhaust manifold 200 is blocked in the exhaust. The passage port 201 of the manifold 200 prevents the gas from being discharged. Conversely, when the exhausted exhaust gas is discharged, the valve stem 180 of the exhaust manifold 200 is controlled to move upward, and the valve stem 180 on the intake manifold 190 is The valve head 181 is blocked on the passage port 191 of the intake manifold 190 so that the exhausted exhaust gas only flows to the exhaust manifold 200 and exits the cylinder body 100.

In this way, only one pipe can flow into or out of the combustion chamber 300 of the cylinder body 100 during intake or exhaust, so that the volumetric efficiency during intake and exhaust is poor, and the output power is relatively weak.

In view of the various shortcomings of the above-described known device construction, the inventors have finally developed the intake and exhaust systems of the four-stroke internal combustion engine of the present invention based on the accumulated experience of long-term use and long-term efforts and experiments. SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an intake and exhaust system of a four-stroke internal combustion engine, and more particularly, a valve stem that opens and closes with a gate on an intake and exhaust manifold by a driving device. At the same time, moving together, so that when the intake air, the mixed oil or air can quickly flow into the combustion chamber of the cylinder body. Conversely, when the exhaust gas is exhausted, the combustion exhaust gas can be quickly discharged out of the combustion chamber of the cylinder body to improve the intake air or The volumetric efficiency of the exhaust gas, which in turn increases the output of the four-stroke internal combustion engine intake and exhaust system.

To this end, an intake and exhaust system of a four-stroke internal combustion engine of the present invention includes: a cylinder body having a combustion chamber and a crankshaft disposed therein, and the crankshaft is connected to a piston through a connecting rod ;

An intake manifold is connected to the combustion chamber in the cylinder body, and the intake manifold is provided with a gate. To control the mixing of oil and gas or air into the combustion chamber of the cylinder body;

An exhaust manifold is connected to the combustion chamber of the cylinder body and the intake manifold, and the exhaust manifold is provided with a gate to control the exhaust of the exhaust gas after combustion;

More than one valve stem, located at the intersection of the intake and exhaust manifolds, the valve stems are respectively provided with a valve head, which can block the combustion chamber and the intake and exhaust manifolds in the cylinder body On the communicating air passage, the other end of the valve stem is provided with the same cam so that the valve stem can be actuated simultaneously by the cam to block on the air passage or leave the air passage.

The invention is provided with a cylinder body, wherein the cylinder body is provided with a combustion chamber for linear movement of the piston, and the cylinder body is respectively provided with an intake and exhaust manifold on both sides of the combustion chamber, the intake and exhaust The manifold is respectively provided with a gate on the passage to the combustion chamber to control the inflow of the mixed oil or gas or the exhausted after the combustion, and the inlet and the exhaust manifold are provided with more than one perforation. The perforation is opposite to the air passage on the combustion chamber, so that the valve stem can be respectively inserted into the combustion chamber through the air passage, and the end of the valve stem extending into the combustion chamber is configured to block the air passage. a valve head in a closed state, and the other end of the valve body protruding from the cylinder body is provided with a cam in the same direction to control the valve rod to move up and down at the same time, so as to mix air oil or air intake When the driving device is driven, the gate on the intake manifold is opened, and the gate on the exhaust manifold is closed, and the cam on the valve stem simultaneously pushes the valve stem toward the cylinder body. The combustion chamber is pressed against The mixed oil and gas or air entering the gas manifold can simultaneously enter the combustion chamber of the cylinder body by the air passage at the same time. Conversely, when the exhaust gas after combustion is discharged, the cam on the valve stem simultaneously pushes the valve stem to the combustion chamber of the cylinder body. By pressing, the air passage is opened and the gate of the exhaust manifold is opened, and the burned exhaust gas can be quickly eliminated to improve the volumetric efficiency during intake and exhaust, thereby increasing the output power. DRAWINGS

Figure 1 is a schematic view of a known device;

Figure 2 is a schematic cross-sectional view of the present invention;

Figure 3 is a schematic view of the operation of the present invention when inhaling; Figure 4 is a schematic view showing the operation of the present invention during compression;

Figure 5 is a schematic view showing the operation of the present invention when it is activated;

Fig. 6 is a schematic view showing the operation of the present invention when exhausting.

Description of the reference numerals:

10, cylinder body 11, connected ^ ' 12, combustion chamber 121, air passage

13. Intake manifolds 131, 141, gates 14, exhaust manifolds 15, perforations 16, valve stems 161, valve heads 162, camshafts 163, springs

164, cam 20, crankshaft 21, flywheel 30, piston

40, Mars plug concrete implementation

In order to further understand and understand the present invention, a preferred embodiment, together with the accompanying drawings, details the construction device of the present invention and its effects as follows:

The intake and exhaust system of a four-stroke internal combustion engine proposed by the present invention is an example of a gasoline reciprocating piston internal combustion engine. Referring to FIG. 2, one or more cylinder bodies 10 are provided. In the present embodiment, the cylinder body 10 is provided with a crankshaft 20, and one end of the crankshaft 20 extending from the outside of the cylinder body 10 is connected to a moving wheel, and the other end is pivotally connected with a gear (please refer to FIG. The driving method is the same as the known device, and is not the focus of the invention, so it will not be described here. The crankshaft 20 is provided with an axe-shaped flywheel 21, which can be in the cylinder with the rotation of the crankshaft 20. The body 10 has a reciprocating circumferential swing.

In addition, the flywheel 21 is pivotally connected to a connecting rod 11 at a gradually inwardly engaging end, and the other end of the connecting rod 11 is pivotally connected with a piston 30, which is in the combustion chamber 12 extending upward from the cylinder body 10 to The piston 30 can be linearly reciprocated in the combustion chamber 12 by the limitation of the combustion chamber 12 and driven by the connecting rod 11, and a spark plug 40 is disposed on the top end of the combustion chamber 12 (in this embodiment, gasoline is used). The internal combustion engine, but in the case of a diesel internal combustion engine, is an injector, and the combustion chamber 12 is provided with air passages 121 on both sides of the spark plug 40, respectively. The cylinder body 10 is respectively provided with an intake and exhaust manifold 13 and 14 on both sides of the combustion chamber 12, and the inlet and exhaust manifolds 13 and 14 are respectively provided with a gate 131 on the passage to the combustion chamber 12. And 141, the gates 131 and 141 are respectively connected to the gears on the crankshaft 20 by the linkage member, and are oppositely operated during the operation to control the mixing of the oil and gas, the air to enter or the exhausted exhaust gas to be exhausted from the combustion chamber 12 . In addition, the inlet and exhaust manifolds 13, 14 are provided with more than one perforation 15 opposite to the air passage 121 on the combustion chamber 12, so that the valve stem 16 can be perforated 15 through the air passage respectively. 121, and entering the combustion chamber 12, and one end of the valve stem 16 extending into the combustion chamber 12 is respectively provided with a valve head 161, which can block the air passage 121 to be in a closed state. And the other end of the valve stem 16 protruding from the steam red body 10 is respectively provided with a cam shaft 162 and a sleeve 163. The cam shaft 162 is respectively provided with the same cam 164, and the cam 164 is combined with When a moving rod is touched, the connecting rod is connected to a gear, and the gear is sleeved with a gear on the crankshaft 20 (not shown) to enable the cam to be driven by the chain. The 164 is actuated simultaneously with the crankshaft 20 under the linkage lever to control the valve stem 16 to move up and down at the same time.

Referring to FIG. 3, when inflating, the piston 30 will be linearly moved downward from the apex of the combustion chamber 12 by the crankshaft 20, and the gate 131 on the intake manifold 13 will be fully opened and exhausted. The gate 141 on the manifold 14 is in a closed state. At the same time, the cam 164 presses the valve stem 16 toward the combustion chamber 12 in the cylinder body 10 under the linkage lever to make the valve stem The valve head 161, which originally blocked the air passage 121, exits the air passage 121 so that the mixed oil or gas coming in from the intake manifold 13 can enter the combustion chamber 12 of the cylinder body 10 through the air passage 121 through the gate 131.

Next, referring to FIG. 4, when the internal combustion engine is compressed, the crankshaft 20 will move the piston 30 from bottom to top to compress the mixed oil and gas entering the combustion chamber 12, on the intake and exhaust manifolds 13, 14. The gates 131, 141 are all closed, and the valve head 161 on the valve stem 16 is also completely blocked on the air passage 121 so that the mixed oil and gas does not exit the combustion chamber 12.

Next, referring to FIG. 5, when the piston 30 compresses the mixed oil and gas to a certain extent, the spark plug 40 will ignite the mixed oil and gas in the combustion chamber 12, causing the mixed oil and gas to burn to generate power, and the piston 30 is directed to Pressing down, next, the action of opening the gate 141 on the exhaust manifold 14 is performed. Finally, referring to FIG. 6, when the exhaust gas is discharged, the piston 30 is again exhausted from bottom to top, and at the same time, the valve stem 16 has moved downward to cause the valve head 161 to leave the air passage 121. So that the burned exhaust gas after combustion can flow from the air passage 121 to the exhaust manifold 14, because the gate 131 of the intake manifold 13 is in a closed state, so that the burned exhaust gas flows to the gate 141 has been opened. The exhaust manifold 14 is exhausted, and thus, the above-described actions are continuously repeated, so that the internal combustion engine can be continuously operated to generate power, and the volumetric efficiency of the internal combustion engine can be improved, thereby increasing the output power.

In summary, the present invention can indeed have the advancement and practicability of improving the use efficiency of the original product; and the configuration and features of the present invention are not disclosed in the present application, and are disclosed or used in the publication. With the application for novelty of creation, the application for invention patent is filed with the bureau in accordance with the provisions of the Patent Law, and I am kindly requested to grant the patent in this case as soon as possible.

The above examples of the present invention are merely illustrative of possible embodiments of the present invention. 'For those skilled in the art, various equivalent variations can be made to the details of the details, but they should all include the present invention. Spirit and scope.

Claims

Claim

1. An intake and exhaust system for a four-stroke internal combustion engine, comprising:

a cylinder body, a combustion chamber and a crankshaft are disposed in the cylinder body, and the crankshaft is pivotally connected to a piston through a connecting rod;

An intake manifold communicating with a combustion chamber in the cylinder body, the intake manifold being provided with a gate to control mixing of oil and gas or air into the combustion chamber of the cylinder body;

More than one valve stem, located at the intersection of the intake and exhaust manifolds, the valve stems are respectively provided with a valve head, which can block the combustion chamber and the intake and exhaust manifolds in the cylinder body a communicating air passage, and the other end of the valve stem is provided with a cam in the same direction, so that the valve stem can be actuated simultaneously by the cam, and is blocked on the air passage or away from the air passage;

By combining the above components, when the mixed oil or gas is inflated, the gate on the intake manifold is opened, and the gate on the exhaust manifold is closed, and the cam on the valve stem is simultaneously The valve stem is pressed against the combustion chamber in the cylinder body, so that the mixed oil or air coming in from the intake manifold can be quickly entered into the combustion chamber of the cylinder body by the air passage, and vice versa, when the exhaust gas is exhausted. At the same time, the cam on the valve stem presses the valve stem toward the combustion chamber in the cylinder body to open the gate of the air passage and the exhaust manifold, and the exhaust gas after combustion can be quickly eliminated.

2. The intake and exhaust system of a four-stroke internal combustion engine according to claim 1, wherein: the valve stem is sleeved with a spring.