CN220566154U - Three-cylinder star-shaped engine applied to automobile - Google Patents
Three-cylinder star-shaped engine applied to automobile Download PDFInfo
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- CN220566154U CN220566154U CN202322427045.4U CN202322427045U CN220566154U CN 220566154 U CN220566154 U CN 220566154U CN 202322427045 U CN202322427045 U CN 202322427045U CN 220566154 U CN220566154 U CN 220566154U
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- connecting rod
- valve
- rocker arm
- cylinder
- engine
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- 238000000034 method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model discloses a three-cylinder star-shaped engine applied to an automobile, wherein the big head end of each connecting rod in the three-cylinder star-shaped engine is hinged with a crankshaft together so that the driving force is concentrated at the same point; the lower gas distribution mechanism is arranged as follows: the ejector rod or the pull rod is adopted to control the opening and the closing of the air inlet valve and the air outlet valve, and all air distribution components including the cam, the gear, the valve spring and the ejector rod or the pull rod are arranged beside the corresponding cylinder body, so that the air distribution components are parallel to the cylinder body. The utility model enables the three-cylinder star engine to be assembled in the existing automobile engine compartment by reducing the height of the engine.
Description
Technical Field
The utility model relates to a three-cylinder star-shaped engine applied to an automobile, in particular to a connecting rod component and a lower valve mechanism in the three-cylinder star-shaped engine for the automobile.
Background
Today's internal combustion engine technology is the use of fossil fuels to convert chemical energy in the fuel into mechanical energy, mainly in single cylinder, double cylinder, three cylinder, four cylinder, six cylinder, or more cylinder designs. The cylinder arrangement mode includes a plurality of designs such as straight arrangement, V-shaped arrangement, horizontal opposite arrangement, star-shaped arrangement and the like.
Most automobiles use engines with four cylinders or more in-line, and many manufacturers develop three-cylinder in-line engines in order to further improve the manufacturing level of the engines. The three-cylinder in-line engine has the advantages of less parts, reduced manufacturing cost and improved reliability, and is not successful because the vibration problem is solved well although the three-cylinder in-line engine is used on a plurality of automobiles. The star-shaped engine has large outer contour size and is difficult to install in the limited space of the automobile; the space structure of the three-cylinder star-shaped engine is set to determine that the combustion acting force, the compression acting force and the main vibration of the three-cylinder star-shaped engine can be balanced; but cannot be installed in existing automotive engine compartments due to height problems.
Disclosure of Invention
The present utility model is to solve the above-mentioned problems of the prior art and to provide a three-cylinder star engine for use in an automobile, which is capable of effectively reducing the height of the three-cylinder star engine by improving a connecting rod part and a down-set valve train of the three-cylinder star engine for an automobile, thereby enabling the three-cylinder star engine to be assembled in an engine compartment of the existing automobile.
The utility model adopts the following technical scheme for solving the technical problems:
the utility model relates to a three-cylinder star-shaped engine applied to an automobile, which is characterized in that three cylinders form a star-shaped arrangement structure around a crankshaft according to an interval of 120 degrees; one end of a connecting rod in each cylinder is a small head end, the other end of the connecting rod is a big head end, the small head end is connected with a piston, and the big head end is connected to a crankshaft; the method is characterized in that: the connecting rod connecting structure and the lower distribution mechanism of the three-cylinder star-shaped engine are as follows:
the big head end of each connecting rod is hinged with the crankshaft together, so that the pushing force is concentrated at the same point;
the lower air distribution mechanism is characterized in that an ejector rod or a pull rod is adopted to control the opening and closing of the air inlet valve and the air outlet valve, and all air distribution components including a cam, a gear, an air valve spring and the ejector rod or the pull rod are arranged beside the corresponding cylinder body, so that the air distribution components are parallel to the cylinder body.
The three-cylinder star-shaped engine applied to the automobile is also characterized in that:
the connecting rods are a first connecting rod, a second connecting rod and a third connecting rod which are in one-to-one correspondence with the air cylinders;
the big end of the first connecting rod is of a single plate structure sleeved on the crankshaft;
the big end of the second connecting rod is a U-shaped head sleeved on the crankshaft to form a U-shaped opening, so that the big end of the first connecting rod is clamped in the U-shaped opening of the second connecting rod;
the big end of the third connecting rod is also a U-shaped head sleeved on the crankshaft to form a U-shaped opening, so that the big end of the second connecting rod is clamped in the U-shaped opening of the third connecting rod.
The three-cylinder star-shaped engine applied to the automobile is also characterized in that: aiming at the structural form of controlling the opening and closing of the intake valve and the exhaust valve by adopting the ejector rod, the fulcrum of the rocker arm is arranged in the middle, the valve and the ejector rod are arranged at the two sides of the fulcrum of the rocker arm, the first end of the rocker arm is connected to the valve, the second end of the rocker arm is connected with a pretension spring, and the pretension spring generates downward pretension force on the second end of the rocker arm, so that the first end of the rocker arm lifts upwards to close the valve; the cam pushes the ejector rod to move upwards to open the valve.
The three-cylinder star-shaped engine applied to the automobile is also characterized in that: aiming at the structural form of controlling the opening and closing of the intake valve and the exhaust valve by adopting the pull rod, the fulcrum of the rocker arm is the first end of the rocker arm, the valve is connected to the middle part of the rocker arm, the second end of the rocker arm is connected with the pre-thrust spring, the second end of the rocker arm is provided with upward pre-thrust by the pre-thrust spring, so that the middle part of the rocker arm is lifted upwards to close the valve, and the pull rod is pushed by the cam to move downwards to open the valve.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model effectively reduces the height of the three-cylinder star-shaped engine, so that the three-cylinder star-shaped engine can be assembled in the engine room of the existing automobile, and the problem that the three-cylinder star-shaped engine cannot be assembled due to the height is solved.
2. Compared with the existing three-cylinder and four-cylinder crankshaft connecting rod structure, the star-shaped crankshaft connecting rod structure has the advantages that the rotation resistance is smaller, and better fuel oil saving effect can be obtained.
Drawings
FIG. 1 is a schematic diagram of a three-cylinder star engine in front view;
FIG. 2 is a schematic side view of a connecting structure of a crankshaft and a connecting rod in the present utility model;
FIG. 3 is a schematic diagram of the intake and exhaust and valve spring structure of the present utility model;
FIG. 4 is a schematic diagram of a control structure of the ejector rod according to the present utility model;
FIG. 5 is a schematic diagram of a control structure of a pull rod according to the present utility model;
FIG. 5a is a schematic diagram showing the cooperation structure of the pull rod and the cam in the present utility model;
reference numerals in the drawings: the device comprises a first connecting rod, a second connecting rod, a third connecting rod, a 4 crankshaft, a 5 air inlet channel, a 6 exhaust channel, a 7 valve spring, an 8 piston, a 10 rocker arm, an 11 valve, a 12 pretensioning spring, a 13 ejector rod, a 14 cam, a 15 gear II, a 16 gear I, a 20 pretensioning spring, a 21 pull rod and a 22 long hole.
Detailed Description
Referring to fig. 1, the three-cylinder star engine applied to an automobile in the present embodiment refers to a three-cylinder star engine shown in fig. 1, wherein three cylinders a, B and C are formed around a crankshaft at intervals of 120 degrees to form a star-shaped arrangement structure; the connecting rods of the air cylinder A, the air cylinder B and the air cylinder C are in one-to-one correspondence with each other and are a first connecting rod 1, a second connecting rod 2 and a third connecting rod 3, one end of each connecting rod in each air cylinder is a small head end, the other end of each connecting rod is a big head end, the small head ends of the connecting rods are connected with pistons of the air cylinders, and the big head ends of the connecting rods are connected with a crankshaft.
In this embodiment, the connecting rod connection structure and the lower distribution mechanism of the three-cylinder star-shaped engine are:
as shown in fig. 2: the big end of the first connecting rod 1 is of a single-plate structure sleeved on the crankshaft; the big end of the second connecting rod 2 is a U-shaped head sleeved on the crankshaft 4 to form a U-shaped opening, so that the big end of the first connecting rod 1 is clamped in the U-shaped opening of the second connecting rod 2; the big end of the third connecting rod 3 is also a U-shaped head sleeved on the crankshaft 4 to form a U-shaped opening, so that the big end of the second connecting rod 2 is clamped in the U-shaped opening of the third connecting rod 3; the big head end of each connecting rod is hinged with the crankshaft 4 together, so that the pushing force is concentrated at the same point.
Fig. 3 illustrates the intake 5, exhaust 6, valve spring 7 and piston 8 channels in the cylinder.
As shown in fig. 4 and 5, in the embodiment, the lower valve actuating mechanism is configured to adopt the ejector rod 13 or the pull rod to control the opening and closing of the intake and exhaust valves, and all valve actuating components including the cam 14, the first gear 16, the second gear 15, the valve spring 7 and the ejector rod 13 or the pull rod 21 are arranged beside the corresponding cylinder body, so that the valve actuating components and the cylinder body form a parallel form, and the overall height of the engine is reduced.
In specific implementation, for the structural form of controlling the opening and closing of the intake valve and the exhaust valve by adopting the ejector rod, as shown in fig. 3 and 4, the fulcrum of the rocker arm 10 is in the middle, the valve 11 and the ejector rod 13 are positioned at two sides of the fulcrum of the rocker arm, the first end of the rocker arm 10 is connected to the valve 11, the second end of the rocker arm 10 is connected with the pretension spring 12, the pretension spring 12 in the structural form is the valve spring 7, the pretension spring 12 generates downward pretension force on the second end of the rocker arm 10, so that the first end of the rocker arm 10 lifts up to close the valve 11, and the cam 14 pushes the ejector rod 13 to open the valve 11 upwards.
In specific implementation, for the structural form of controlling the opening and closing of the intake valve and the exhaust valve by adopting a pull rod, as shown in fig. 5, the fulcrum of the rocker arm 10 is the first end of the rocker arm 10, the valve 11 is connected to the middle part of the rocker arm 10, the second end of the rocker arm 10 is connected with the pre-thrust spring 20, the pre-thrust spring 20 in the structural form is the valve spring 7, the pre-thrust spring 20 generates upward pre-thrust to the second end of the rocker arm 10, so that the middle part of the rocker arm 10 lifts upwards to close the valve, and the cam 14 pushes the pull rod 21 to open the valve 11 downwards; as shown in fig. 5a, the link 21 is in a linear motion, while the rocker arm 10 is in a rotary motion, and correspondingly, a connecting hole in the link 21, which is in fit connection with the cam 14, is provided as a long hole 22, so that a play allowance is formed.
The valve mechanism is arranged beside the side of the cylinder, and the ejector rod or the pull rod is used for controlling the opening and closing of the air inlet valve and the air outlet valve, so that the height of the changing machine is greatly reduced, and the outer contour size of the engine is reduced.
According to the principle of a three-cylinder engine, the three-cylinder ignition interval of the cylinder A, the cylinder B and the cylinder C is fixedly set to 240 degrees, and the four-stroke engine uniformly does work three times in 720 degrees of operation cycles of air intake, compression, work and exhaust, so that stable operation and stable driving force can be realized.
Claims (4)
1. The three-cylinder star-shaped engine is characterized in that three cylinders form a star-shaped arrangement structure around a crankshaft according to an interval of 120 degrees; one end of a connecting rod in each cylinder is a small head end, the other end of the connecting rod is a big head end, the small head end is connected with a piston, and the big head end is connected to a crankshaft; the method is characterized in that: the connecting rod connecting structure and the lower distribution mechanism of the three-cylinder star-shaped engine are as follows:
the big head end of each connecting rod is hinged with the crankshaft together, so that the pushing force is concentrated at the same point;
the lower air distribution mechanism is characterized in that an ejector rod or a pull rod is adopted to control the opening and closing of the air inlet valve and the air outlet valve, and all air distribution components including a cam, a gear, an air valve spring and the ejector rod or the pull rod are arranged beside the corresponding cylinder body, so that the air distribution components are parallel to the cylinder body.
2. A three-cylinder star engine for use in an automobile as claimed in claim 1, wherein:
the connecting rods are a first connecting rod (1), a second connecting rod (2) and a third connecting rod (3) which are in one-to-one correspondence with the air cylinders;
the big end of the first connecting rod (1) is of a single-plate structure sleeved on the crankshaft;
the big end of the second connecting rod (2) is a U-shaped head sleeved on the crankshaft to form a U-shaped opening, so that the big end of the first connecting rod (1) is clamped in the U-shaped opening of the second connecting rod (2);
the big end of the third connecting rod (3) is also a U-shaped head sleeved on the crankshaft to form a U-shaped opening, so that the big end of the second connecting rod (2) is clamped in the U-shaped opening of the third connecting rod (3).
3. A three-cylinder star engine for use in an automobile as claimed in claim 1, wherein: aiming at the structural form of controlling the opening and closing of the intake valve and the exhaust valve by adopting the ejector rod, the fulcrum of the rocker arm (10) is in the middle, the valve (11) and the ejector rod (13) are positioned at two sides of the fulcrum of the rocker arm, the first end of the rocker arm (10) is connected to the valve, the second end of the rocker arm (10) is connected with a pretension spring (12), and the pretension spring (12) generates downward pretension force on the second end of the rocker arm (10) so that the first end of the rocker arm (10) lifts upwards to close the valve (11); the cam (14) pushes the ejector rod (13) to open the valve (11) upwards.
4. A three-cylinder star engine for use in an automobile as claimed in claim 1, wherein: aiming at the structural form of controlling the opening and closing of the intake valve and the exhaust valve by adopting a pull rod, the fulcrum of the rocker arm (10) is the first end of the rocker arm (10), the valve (11) is connected to the middle part of the rocker arm (10), the second end of the rocker arm (10) is connected with a pre-thrust spring (20), the second end of the rocker arm (10) is provided with upward pre-thrust by the pre-thrust spring (20), the middle part of the rocker arm (10) is lifted upwards to close the valve (11), and the pull rod (21) is pushed by the cam (14) to open the valve (11) downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322427045.4U CN220566154U (en) | 2023-09-07 | 2023-09-07 | Three-cylinder star-shaped engine applied to automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322427045.4U CN220566154U (en) | 2023-09-07 | 2023-09-07 | Three-cylinder star-shaped engine applied to automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220566154U true CN220566154U (en) | 2024-03-08 |
Family
ID=90100559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322427045.4U Active CN220566154U (en) | 2023-09-07 | 2023-09-07 | Three-cylinder star-shaped engine applied to automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220566154U (en) |
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2023
- 2023-09-07 CN CN202322427045.4U patent/CN220566154U/en active Active
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