WO2016095260A1

WO2016095260A1 - Multi-cylinder internal combustion engine set adopting a crosshead assembly rod

Info

Publication number: WO2016095260A1
Application number: PCT/CN2014/095090
Authority: WO
Inventors: 江景通
Original assignee: 江景通
Priority date: 2014-12-18
Filing date: 2014-12-26
Publication date: 2016-06-23
Also published as: CN104454165A

Abstract

A multi-cylinder internal combustion engine set adopting a crosshead assembly rod, comprising a crosshead assembly rod (1), at least eight air cylinders and at least a set of crank-link mechanisms (5,9); each air cylinder is provided with a corresponding air cylinder head assembly (4) thereon and a piston (3) therein, each piston (3) is directly connected to the same crosshead assembly rod (1) via a corresponding piston rod (2); at least four of the at least eight air cylinders are symmetrically arranged with the other at least four air cylinders on the two sides of the crosshead assembly rod (1), and the piston rods in any two symmetrically arranged air cylinders and the motion trajectory of the piston rods are on the same axis; a small end of the crank-link of the crank-link mechanisms (5,9) is connected to the crosshead assembly rod (1), and a big end of the crank-link of the crank-link mechanisms (5,9) is connected to a crank shaft neck. The multi-cylinder internal combustion engine set adopting a crosshead assembly rod addresses the problem of large size of a medium and low speed internal combustion engine, evenly distributes the stress on the main journal and the crank journal, and improves lubrication.

Description

Multi-cylinder internal combustion engine unit adopting crosshead gathering rod

Technical field

The present invention relates to the field of internal combustion engines, and more particularly to a multi-cylinder internal combustion engine group and a multi-cylinder internal combustion engine using a crosshead collecting rod.

Background technique

In the conventional internal combustion engine, the bearing shaft of the crankshaft is under pressure during the work and compression, and the bearing neck and the crankshaft are unevenly stressed, and the lubricating effect is poor. The side effect caused by the piston doing work to push the crankshaft through the chain rod. The reverse side thrust causes the piston and the cylinder to rub sideways, causing the piston and the cylinder to be evenly worn and losing part of the power.

In addition, the traditional medium speed machine and low speed machine are bulky. For example, the volume of the internal combustion engine Wärne 32 type medium speed machine produced by Yuchai Engine Factory is length × width × height = 8295mm × 3020mm × 3905mm, displacement is 578L, total power It is 9000kw, the displacement volume ratio is 1:168, and the volumetric power ratio is 10.87L/kw; the volume of Wärtsilä RT-flex82C low speed machine produced by Yuchai Engine Factory is length × width × height = 21015mm × 7680mm × 13240mm The displacement is 16768L, the total power is 54240kw, the displacement volume ratio is 1:127, and the volumetric power ratio is 39L/kw; the existing medium and low speed machine has a large displacement volume ratio, so in the manufacture of these large bores and large When the stroke and large displacement medium and low speed machines, especially the low speed machine, large and heavy machinery equipment is required, the equipment investment is large, and the manufacturing cost is high.

Summary of the invention

The present invention aims to provide a multi-cylinder internal combustion engine group using a crosshead collecting rod, the internal combustion engine group It can solve the problem of large volume of medium and low speed machine, and ensure that the main bearing neck and crankshaft neck are evenly stressed and the lubrication is improved.

In order to achieve the above object, the technical solution adopted by the present invention is:

A multi-cylinder internal combustion engine unit adopting a crosshead hoisting rod, which is characterized in that it comprises a crosshead arranging rod, at least eight cylinders, and at least one set of crank linkages; each cylinder is provided with a corresponding cylinder head total a piston is disposed in each cylinder, and each piston is directly connected to the same crosshead arranging rod through a corresponding piston rod; at least four of the at least eight cylinders are symmetric with at least four other cylinders The piston rods disposed on the two sides of the crosshead collecting rod and any two or two symmetric cylinders and the movement track thereof are located on the same axis; the small end of the connecting rod of the crank connecting rod mechanism is connected with the crosshead gathering rod, The large end of the connecting rod mechanism is connected to the crankshaft neck.

Thus, with the multi-cylinder arrangement, the number of cylinders of the present invention is much larger than the number of cylinders of the conventional internal combustion engine group, especially for low speed machines, which greatly reduces the size and weight of the internal combustion engine, and therefore, is large in manufacturing. Powered internal combustion engines no longer need to be manufactured with large-scale mechanical equipment, which is conducive to mass production. At the same time, due to the symmetrical arrangement of the cylinders, the connecting rod bearing of the crank-link mechanism is more evenly loaded, so that the main journal and the crankshaft are evenly stressed and have a good lubricating effect.

The following is a further improved technical solution of the present invention:

As a specific structural form, the at least eight cylinders are divided into one group, and each of the two groups of cylinders is provided with a set of crank link mechanisms fixedly connected to the crosshead arranging rods.

As another specific structural form, the at least eight cylinders are divided into two groups, each group of cylinders includes at least four cylinders symmetrically disposed on two sides of the crosshead struts, and one or two groups between the two cylinders The set is fixed to the crank link mechanism on the crosshead arranging rod.

As another specific structural form, the at least eight cylinders are divided into three groups, and the cylinders of the middle group include at least four cylinders symmetrically disposed on both sides of the crosshead gathering rod, and the cylinders of the two groups of the cylinders are symmetrically disposed on the cross. At least two cylinders on both sides of the head collecting rod, and a set of crank connecting rods fixedly connected to the crosshead collecting rods are disposed between the adjacent two sets of cylinders. Further, among the three groups of cylinders, there are eight cylinders in the middle group and four cylinders in each of the two groups.

Adjacent to the crank-link mechanism, the crankshafts are turned oppositely, that is, the crankshafts of the adjacent two sets of crank-link mechanisms are oppositely rotated, whereby the lateral thrust generated by the crankshaft rotation is offset by the counter-rotation of the double crankshafts. The vibration amplitude of the internal combustion engine body is reduced.

The crosshead collecting rod is vertically connected with the piston rods of the respective cylinders, whereby the crosshead collecting rods are in the same direction as the pistons of the respective cylinders, thereby ensuring high efficiency of the transmission.

As a specific guiding structure, the guiding structure comprises a sliding block fixed on the frame, a thrust sliding plate and a directional sliding plate mounted on the sliding block; the thrust sliding plate and the directional sliding plate are fixed on the crosshead arranging rod and Set on both sides of the cylinder.

Further, the present invention also provides a multi-cylinder internal combustion engine including a plurality of sets of multi-cylinder internal combustion engine groups using a crosshead concentrating rod as described above, and each group adopts a cross-head assembly rod multi-cylinder internal combustion engine group in parallel parallel arrangement And the heights of the adjacent two crosshead collecting rods are different. Specifically, the height of the crosshead collecting rod is determined according to the position of each crankshaft neck.

Among them, at least two sets of internal combustion engine groups share a crosshead collecting rod, and a plurality of crosshead collecting rods are arranged in parallel.

The conventional design and process of the intake and exhaust system, the fuel supply system, the ignition system, the circuit system, the cooling system, the lubrication system, and the speed regulation and control system of the internal combustion engine of the present invention are adopted.

Compared with the prior art, the invention has the beneficial effects that the design structure of the invention is compact, The volume ratio of displacement will be greatly reduced, even reaching about 1:30, the volumetric power ratio is about 5L/kw, which greatly reduces the volume of the unit and reduces the weight of the unit. At the same time, the manufacturing area is relatively small, not Large-scale mechanical equipment is required, and the general medium-sized internal combustion engine enterprise can complete the production, which is beneficial to mass production, thereby greatly reducing the manufacturing cost.

The invention is further illustrated below in conjunction with the drawings and embodiments.

DRAWINGS

1 is a schematic structural view of an embodiment of the present invention;

Figure 2 is a front elevational view of Figure 1;

3 is a schematic view showing the working principle of an embodiment of the present invention;

4 is a top plan view of another embodiment of the present invention having a plurality of single row cylinder banks;

Fig. 5 is a schematic view showing the structure of a four-group internal combustion engine unit sharing a crosshead collecting rod according to the present invention.

In the picture

1-cross head assembly rod; 2-piston rod; 3-piston; 4-cylinder head assembly;

5,9-crank linkage; 6-slide base; 7-thrust slide; 8-directional slide;

10-Crankshaft neck.

detailed description

A multi-cylinder internal combustion engine comprising 36 sets of a multi-cylinder internal combustion engine group with a crosshead arranging rod arranged side by side, comprising a total of 1008 cylinders, as shown in Fig. 5, wherein four adjacent groups of multi-cylinder internal combustion engine groups adopting a crosshead arranging rod A crosshead assembly rod 1 is shared. In other words, there are 112 cylinders on each side of each crosshead assembly pole, and a single cylinder multi-cylinder internal combustion engine group including a crosshead assembly rod includes 28 cylinder. Specifically, a single group of multi-cylinder internal combustion engine units employing a crosshead splicing rod includes a crosshead concentrating rod 1, 28 cylinders, and two sets of

crank linkage mechanisms

5, 9; each cylinder is provided with a corresponding cylinder head total 4, each cylinder is provided with a piston 3, each piston 3 is directly connected to the same crosshead collecting rod 1 through the corresponding piston rod 2; among the 28 cylinders, 14 cylinders and 14 other The cylinders are symmetrically disposed on both sides of the crosshead collecting rod 1, and the piston rods 2 and their movement trajectories in any two or two symmetrical cylinders are located on the same axis; the connecting rod ends of the

crank connecting rods

5, 9 are The crosshead collecting rods 1 are connected, and the crank ends of the connecting rod ends of the

crank connecting rods

5, 9 are connected to the crankshaft.

The piston rods of 112 cylinders in the multi-cylinder internal combustion engine group using the crosshead hoisting rod of the present embodiment are directly fixedly connected with a crosshead arranging rod 1, and 28 cylinders are in the intake air and 28 cylinders during operation. In compression, 28 cylinders are working, 28 cylinders are exhausted, and the pistons are symmetrically arranged in a four-stroke firing order, so the crankshaft is subjected to the thrust of the crosshead collecting rod 1 (toward the movement) or the pulling force during the rotation (when moving ), so that the main journal and crankshaft neck are evenly stressed and have good lubrication.

The crosshead collecting rod 1 is used to fix the piston reciprocating in the cylinder, complete the four-stroke work (intake, compression, work, exhaust) in the forward movement, and complete the four-stroke work in the reverse movement (compression, work, exhaust, Intake).

In this embodiment, the crank link mechanism is fully utilized to transmit the force of the piston work to the crankshaft through the connecting rod, thereby pushing or pulling the crankshaft to rotate. The invention can design a plurality of models, such as a single crank type, a double crank type and a multi-crank type, and the double crank type is the best model, and the double crank linkage mechanism opposes the movement to cancel the crankshaft. When rotating, the lateral thrust of the piston is generated by the connecting rod, the side friction between the piston and the cylinder is eliminated, the vibration of the body is reduced, and the thrust slide is installed at a reasonable position. Oriented slides with power output on demand.

The piston of the internal combustion engine of this embodiment adopts a long stroke design, and the cylinder employs a four stroke stroke. The plurality of cylinders of the internal combustion engine of the present invention arrange the firing order of the pistons according to the principle that the crank is uniformly stressed.

The parameters of the internal combustion engine involved in this embodiment are as follows:

The cylinder diameter is 110mm, the piston stroke is 410mm, the number of cylinders is 1008, the single cylinder displacement is 3.895L, the total displacement is 3926L, the whole machine volume is length × width × height = 8100mm × 4320mm × 2900mm, the total power is 39260kw, The displacement volume ratio is 1:25.84, and the displacement of the internal combustion engine at a four-stroke rotation speed of 700 rpm is calculated as 10 kw per liter, and the volume-to-power ratio is 2.58 L/kw. The displacement volume ratio refers to the ratio of the total displacement of the internal combustion engine to the overall volume, which is the ratio of the total volume of the internal combustion engine to the total power.

The above-described embodiments are to be understood as being illustrative only and are not intended to limit the scope of the present invention. Modifications are intended to fall within the scope defined by the appended claims.

Claims

A multi-cylinder internal combustion engine assembly using a crosshead hoisting rod, characterized in that it comprises a crosshead collecting rod (1), at least eight cylinders, and at least one set of crank linkages (5, 9); each cylinder A corresponding cylinder head assembly (4) is mounted thereon, and each cylinder is provided with a piston (3), and each piston (3) is directly connected to the same crosshead assembly rod through a corresponding piston rod (2) (1) Above; at least eight of the cylinders, at least four of which are symmetrically disposed with the other at least four cylinders on either side of the crosshead collecting rod (1), and any two or two symmetric cylinders (2) in the cylinder The moving track is located on the same axis; the small end of the connecting rod mechanism (5, 9) is connected to the crosshead collecting rod (1), and the connecting rod of the crank connecting rod mechanism (5, 9) is large The end is connected to the crankshaft (10).
A multi-cylinder internal combustion engine unit using a crosshead hoisting rod according to claim 1, wherein said at least eight cylinders are grouped into a group, and each of said groups of cylinders is provided with a fixed set of cross-head assembly rods on both sides thereof. (1) Upper crank linkage (5, 9).
The multi-cylinder internal combustion engine assembly according to claim 1, wherein said at least eight cylinders are divided into two groups, each group of cylinders being symmetrically disposed on both sides of the crosshead collecting rod (1). There are at least four cylinders, and one or two sets of crank linkages fixedly connected to the crosshead struts (1) are provided between the two sets of cylinders.
The multi-cylinder internal combustion engine assembly according to claim 1, wherein the at least eight cylinders are divided into three groups, and the cylinders of the intermediate group are symmetrically disposed on both sides of the crosshead assembly rod (1). At least four cylinders, the cylinders on both sides of the group include at least two cylinders symmetrically disposed on both sides of the crosshead collecting rod (1), and a set of fixed connections between the adjacent two sets of cylinders The crank linkage (5, 9) on the prefix rod (1).
A multi-cylinder internal combustion engine unit using a crosshead hoisting rod according to claim 4, wherein among the three sets of cylinders, there are eight cylinders in the middle group and four cylinders in each of the two groups.
A multi-cylinder internal combustion engine assembly using a crosshead hoisting rod according to claims 1, 2, 4, 5, characterized in that the crankshafts of the adjacent two sets of crank linkages (5, 9) are turned oppositely.
A multi-cylinder internal combustion engine unit using a crosshead hoisting rod according to any one of claims 1 to 5, characterized in that the crosshead arranging rod (1) is vertically connected to the piston rod (2) of each cylinder.
A multi-cylinder internal combustion engine assembly using a crosshead hoisting rod according to claim 7, wherein said guiding structure comprises a slide seat (6) fixed to the frame, and a thrust slide mounted on the slide base (6). (7) and the directional slide (8); the thrust slide (7) and the directional slide (8) are both fixed on the crosshead arranging rod (1) and disposed on both sides of the cylinder.
A multi-cylinder internal combustion engine comprising a plurality of sets of multi-cylinder internal combustion engine groups using a crosshead arranging rod according to any one of claims 1-8, each group of parallel multi-cylinder internal combustion engine sets using crosshead arranging rods arranged in parallel And the height of the adjacent two crosshead collecting rods is different.
A multi-cylinder internal combustion engine according to claim 9, wherein at least two sets of internal combustion engine groups share a crosshead collecting rod (1), and a plurality of crosshead collecting rods (1) are arranged in parallel.