阅读说明：本技术 一种横置式进排气配气装置 (Horizontal air inlet and outlet distribution device ) 是由 刘岱 周慧东 熊仟 刘龙 张天 程威嘉 张琦 于 2021-07-15 设计创作，主要内容包括：本发明提出了一种横置式进排气配气装置,属于发动机配气机构领域。解决了现有的进排气阀布置方式难以满足燃烧实验的问题。它包括凸轮轴上安装有进气凸轮和排气凸轮,进气凸轮和排气凸轮分别与进气凸轮从动件和排气凸轮从动件相接触,进气凸轮从动件和排气凸轮从动件的底端均与从动轴转动相连,进气凸轮从动件的上部通过进气推杆与进气摇臂底部相连,进气摇臂中部与进气摇臂轴相连,进气摇臂上部与进气阀相连,排气凸轮从动件的上部通过排气推杆与排气摇臂底部相连,所述进气阀和排气阀为垂直于活塞运行方向横向布置的形式,布置位置位于缸盖下方并高于活塞的上止点。它主要用于发动机的配气。(The invention provides a transverse air inlet and outlet distribution device, belonging to the field of engine distribution mechanisms. The problem of current intake and exhaust valve arrangement mode be difficult to satisfy the burning experiment is solved. The exhaust cam and the intake cam are arranged on a cam shaft, the intake cam and the exhaust cam are respectively contacted with an intake cam follower and an exhaust cam follower, the bottom ends of the intake cam follower and the exhaust cam follower are respectively connected with a driven shaft in a rotating manner, the upper part of the intake cam follower is connected with the bottom of an intake rocker through an intake push rod, the middle part of the intake rocker is connected with an intake rocker shaft, the upper part of the intake rocker is connected with an intake valve, the upper part of the exhaust cam follower is connected with the bottom of an exhaust rocker through an exhaust push rod, the intake valve and the exhaust valve are transversely arranged in a mode perpendicular to the running direction of a piston, and the arrangement position of the intake valve and the exhaust cam is positioned below a cylinder cover and higher than the upper dead point of the piston. It is mainly used for the distribution of the engine.)

1. The transverse air inlet and outlet distribution device is characterized in that: the exhaust valve comprises a camshaft (4), a driven shaft (7), an air inlet valve (17), an exhaust valve (12), an air inlet cam follower (18), an exhaust cam follower (3), an air inlet rocker arm (20), an exhaust rocker arm (13), an air inlet push rod and an exhaust push rod (15), wherein the camshaft (4) is provided with an air inlet cam and an exhaust cam, the air inlet cam and the exhaust cam are respectively contacted with the air inlet cam follower (18) and the exhaust cam follower (3), the bottom ends of the air inlet cam follower (18) and the exhaust cam follower (3) are both rotationally connected with the driven shaft (7), the upper part of the air inlet cam follower (18) is connected with the bottom of the air inlet rocker arm (20) through the air inlet push rod, the middle part of the air inlet rocker arm (20) is connected with an air inlet rocker shaft (19), and the upper part of the air inlet rocker arm (20) is connected with the air inlet valve (17), the upper portion of the exhaust cam follower (3) is connected with the bottom of an exhaust rocker arm (13) through an exhaust push rod (15), the middle of the exhaust rocker arm (13) is connected with an exhaust rocker arm shaft (14), the upper portion of the exhaust rocker arm (13) is connected with an exhaust valve (12), an intake valve (17) and the exhaust valve (12) are transversely arranged perpendicular to the running direction of a piston (16), and the arrangement position is located below a cylinder cover and higher than the top dead center of the piston (16).

2. The transverse air inlet and outlet distribution device according to claim 1, wherein: the air inlet valve (17) and the radius direction of the air cylinder form an included angle of 5 degrees and point to the center point of the air cylinder, and the air outlet valve (12) is parallel to the radius direction of the air cylinder.

3. The transverse air inlet and outlet distribution device according to claim 1, wherein: the piston (16) is provided with a groove (21).

4. The transverse air inlet and outlet distribution device according to claim 1, wherein: and the air inlet valve (17) and the air outlet valve (12) are both provided with seat rings (11).

5. The transverse air inlet and outlet distribution device according to claim 1, wherein: and the camshaft (4) is fixedly connected with a first cam bearing (5), a second cam bearing (6) and a camshaft axial bearing (8).

6. The transverse air inlet and outlet distribution device according to claim 5, wherein: the first cam bearing (5), the second cam bearing (6) and the camshaft axial bearing (8) are connected with the camshaft (4) through the fixing pin (2).

7. The transverse air inlet and outlet distribution device according to claim 6, wherein: the camshaft axial bearing (8) is connected with a bearing segment (9), the bearing segment (9) is connected with a sensor wheel (1), and a sensor (10) is arranged on the sensor wheel (1).

Technical Field

The invention belongs to the field of engine valve actuating mechanisms, and particularly relates to a transverse air inlet and outlet valve actuating device.

Background

In the prior art, a crankshaft of an engine is connected with a camshaft by adopting a timing gear, so that the rotation of the crankshaft is synchronous with the camshaft, and the camshaft further controls the opening or closing of an intake valve and an exhaust valve by controlling mechanisms such as a push rod, a rocker arm and the like. The existing valve actuating mechanism basically adopts an overhead valve mechanism. When a plurality of fuel injectors or glass windows are required to be installed at the top of a cylinder cover in a test, if an overhead valve mechanism is adopted, enough fuel injectors are not arranged to simulate the combustion process required to be tested, and enough top visual windows are not arranged to observe the combustion process in a combustion chamber, so that the requirement required by the test is not met.

In order to optimize combustion, the multi-fuel injector design shows better superiority, but the arrangement of the multi-fuel injectors occupies more area of the cylinder cover, so that the air inlet and exhaust valves are not enough arranged, and the strength and the service life of the cylinder cover are reduced due to the excessive openings in the cylinder cover. In addition, some combustion experiments also need to reduce the influence of the vortex, so that the strength of the vortex of the gas entering the cylinder is reduced as much as possible.

In summary, for an experimental device with multiple injectors, the existing arrangement mode of the intake and exhaust valves is difficult to meet the experimental requirements.

Disclosure of Invention

The invention provides a transverse air inlet and outlet distribution device for solving the problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a transverse air inlet and outlet distribution device comprises a camshaft, a driven shaft, an air inlet valve, an exhaust valve, an air inlet cam follower, an exhaust cam follower, an air inlet rocker arm, an exhaust rocker arm, an air inlet push rod and an exhaust push rod, wherein the camshaft is provided with an air inlet cam and an exhaust cam, the air inlet cam and the exhaust cam are respectively contacted with the air inlet cam follower and the exhaust cam follower, the bottom ends of the air inlet cam follower and the exhaust cam follower are respectively connected with the driven shaft in a rotating manner, the upper part of the air inlet cam follower is connected with the bottom of the air inlet rocker arm through the air inlet push rod, the middle part of the air inlet rocker arm is connected with an air inlet rocker shaft, the upper part of the air inlet rocker arm is connected with the air inlet valve, the upper part of the exhaust cam follower is connected with the bottom of the exhaust rocker arm through the exhaust push rod, the middle part of the exhaust rocker arm is connected with the exhaust rocker arm shaft, and the upper part of the exhaust rocker arm is connected with the exhaust valve, the air inlet valve and the exhaust valve are transversely arranged perpendicular to the running direction of the piston, and the arrangement positions of the air inlet valve and the exhaust valve are located below the cylinder cover and higher than the top dead center of the piston.

Furthermore, the air inlet valve and the radius direction of the cylinder form an included angle of 5 degrees and point to the center point of the cylinder, and the exhaust valve is parallel to the radius direction of the cylinder.

Furthermore, the piston is provided with a groove.

Furthermore, the intake valve and the exhaust valve are both provided with seat rings.

Furthermore, a first cam bearing, a second cam bearing and a camshaft axial bearing are fixedly connected to the camshaft.

Further, the first cam bearing, the second cam bearing and the camshaft axial bearing are connected to the camshaft by fixing pins.

Furthermore, the camshaft axial bearing is connected to a bearing segment, which is connected to a sensor wheel, on which a sensor is arranged.

Compared with the prior art, the invention has the beneficial effects that: the invention solves the problem that the existing arrangement mode of the air inlet and outlet valves is difficult to satisfy the combustion experiment. The arrangement scheme of multiple oil injectors on the cylinder cover can be realized by the transverse arrangement of the air inlet and outlet valves, and the structural strength of the cylinder cover is not influenced; the arrangement of a large window can be realized so as to observe the combustion process in the cylinder; the design that the included angle between the air inlet valve rod and the radius direction is 5 degrees can reduce the vortex intensity of air to the maximum extent after the air flow enters the combustion chamber, so that the influence of the vortex on certain specific combustion processes can be ignored; through the design to intake and exhaust valve transmission structure, can realize the normal work of nonparallel air valve pole on the same camshaft, can make the normal work of nonparallel air valve pole on the same camshaft, adapt to the centripetal arrangement mode of air intake and exhaust valve in the cylinder, improve horizontal air intake and exhaust valve's the efficiency of admitting air.

Drawings

FIG. 1 is a schematic structural view of a horizontal air inlet and outlet distribution device according to the present invention;

FIG. 2 is a schematic structural view of a transmission part of the exhaust valve according to the present invention;

FIG. 3 is a schematic diagram of the relative positions of the intake/exhaust valve and the piston according to the present invention.

1-sensor wheel, 2-fixed pin, 3-exhaust cam follower, 4-camshaft, 5-first cam bearing, 6-second cam bearing, 7-driven shaft, 8-camshaft axial bearing, 9-bearing segment, 10-sensor, 11-seat ring, 12-exhaust valve, 13-exhaust rocker arm, 14-exhaust rocker arm shaft, 15-exhaust push rod, 16-piston, 17-intake valve, 18-intake cam follower, 19-intake rocker arm shaft, 20-intake rocker arm, 21-groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1-3 to illustrate the present embodiment, a horizontal intake and exhaust air distribution device comprises a camshaft 4, a driven shaft 7, an intake valve 17, an exhaust valve 12, an intake cam follower 18, an exhaust cam follower 3, an intake rocker arm 20, an exhaust rocker arm 13, an intake push rod and an exhaust push rod 15, wherein the camshaft 4 is provided with an intake cam and an exhaust cam, the intake cam and the exhaust cam are respectively contacted with the intake cam follower 18 and the exhaust cam follower 3, the bottom ends of the intake cam follower 18 and the exhaust cam follower 3 are both rotatably connected with the driven shaft 7, the upper part of the intake cam follower 18 is connected with the bottom of the intake rocker arm 20 through the intake push rod, the middle part of the intake rocker arm 20 is connected with an intake rocker shaft 19, the upper part of the intake rocker arm 20 is connected with the intake valve 17, the upper part of the exhaust cam follower 3 is connected with the bottom of the exhaust rocker arm 13 through the exhaust push rod 15, the middle part of the exhaust rocker arm 13 is connected with an exhaust rocker arm shaft 14, the upper part of the exhaust rocker arm 13 is connected with an exhaust valve 12, the intake valve 17 and the exhaust valve 12 are transversely arranged perpendicular to the running direction of the piston 16, and the arrangement position is positioned below a cylinder cover and higher than the top dead center of the piston 16.

For the rational arrangement of the multiple injectors and the arrangement of the large visualization window, the intake valve 17 and the exhaust valve 12 are arranged transversely to the direction of piston travel, at a position below the cylinder head and above the top dead center of the piston 16. Such arrangement mode can reach the rational arrangement of many sprayer on the cylinder cap under the prerequisite that does not influence cylinder cap structural strength, can realize arranging so that the combustion process in the observation jar of the visual window in cylinder cap top.

In order to reduce the strength of the gas vortex in the cylinder, the device changes the angle of the transverse air inlet valve 17, the air inlet valve 17 forms an included angle of 5 degrees with the radial direction of the cylinder and points to the central point of the cylinder under the condition of keeping the running direction of the vertical piston 16 unchanged, and the exhaust valve 12 is parallel to the radial direction of the cylinder. The arrangement of the air inlet valve 17 can enable the gas entering the combustion chamber to have a certain angle, the strength of the vortex of the gas entering the cylinder is reduced to the maximum extent, and the influence on the experiment is reduced.

In order to achieve the above effect and ensure the normal operation of the device, the intake rocker arm 20 and the exhaust rocker arm 13 which are in contact with the intake valve 17 and the exhaust valve 12 are designed to be inclined at a certain angle, and the corresponding rocker shaft is also designed to be deflected. This allows for normal operation of non-parallel valve stems on the same camshaft 4, accommodating the concentric arrangement of the intake and exhaust valves 17, 12 in the cylinder. Meanwhile, for the movement of the intake valve 17 and the exhaust valve 12, a valve train movement space is reserved at the top of the piston 16, so that the valve lift can reach 23 mm.

In the embodiment, a groove 21 is formed in a piston 16, seat rings 11 are arranged on an air inlet valve 17 and an air outlet valve 12 of a transverse air inlet and outlet air distribution device, a first cam bearing 5, a second cam bearing 6 and a cam shaft axial bearing 8 are fixedly connected to a cam shaft 4 of the transverse air inlet and outlet air distribution device, the first cam bearing 5, the second cam bearing 6 and the cam shaft axial bearing 8 of the transverse air inlet and outlet air distribution device are connected with the cam shaft 4 through fixing pins 2, the cam shaft axial bearing 8 of the transverse air inlet and outlet air distribution device is connected with a bearing section 9, the bearing section 9 of the transverse air inlet and outlet air distribution device is connected with a sensor wheel 1, and a sensor 10 is arranged on the sensor wheel 1 of the transverse air inlet and outlet air distribution device.

When the rapid expansion compressor works, when the rapid expansion compressor is about to perform an air inlet process, the crankshaft drives the camshaft 4, the air inlet cam on the camshaft 4 drives the air inlet cam follower 18, and then the air inlet push rod is pushed to drive the air inlet rocker arm 20 to drive the air inlet valve 17 to open and move towards the cylinder, and at the moment, the piston 16 moves downwards from the upper dead point, so that a groove 21 is processed on the piston 16 to avoid collision between the air inlet valve 17 and the piston 16. At the same time, the gas is caused to enter the combustion chamber at an angle of about 5 degrees, resulting in a flow regime with extremely low swirl strength. Subsequently, multiple injectors or visualization windows on the cylinder head can be used to control and observe the combustion process. After the work is done and the exhaust process is started, the camshaft 4 drives the exhaust cam follower 3 to push the exhaust push rod 15, the exhaust push rod 15 drives the exhaust rocker arm 13 to open the exhaust valve 12, exhaust is carried out, and the opening and closing duration time is controlled according to the cam line type.

The present invention provides a horizontal intake and exhaust air distribution device, which is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.