CN202441489U

CN202441489U - Lever swing arm type diesel internal-combination engine

Info

Publication number: CN202441489U
Application number: CN2012200836700U
Authority: CN
Inventors: 张海州
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-08
Filing date: 2012-03-08
Publication date: 2012-09-19
Anticipated expiration: 2022-03-08

Abstract

The utility model relates to a four-stroke diesel internal-combination engine, particularly to a lever swing arm type diesel internal-combination engine. The lever swing arm type diesel internal-combination engine comprises an engine body; cylinders are arranged in the engine body; a cylinder cover is fixedly arranged on the upper part of each cylinder; a piston which is matched with the inner wall of each cylinder is arranged; a connecting rod is movably connected with the piston; a lever swing arm is arranged in the engine body; the middle part of the lever swing arm is movably connected with a swing arm shaft which is fixed in the engine body; four cylinders are arranged in two columns, and symmetrically distributed at two sides of the lever swing arm; an air inlet door, an exhaust door and a diesel injector are respectively arranged in the cylinder cover positions corresponding to respective cylinder; two ends of the lever swing arm are respectively fixedly provided with a connecting rod shaft; the connecting rod shaft is movably connected with the connecting rod which is positioned at one end of the lever swing arm; a large connecting rod is movably connected with the middle part of the connecting rod shaft which is positioned at one end of the lever swing arm; and the other end of the large connecting rod is movably connected with the throw neck of a single-throw crankshaft. The lever swing arm type diesel internal-combination engine disclosed by the utility model has the characteristics of simple structure, good reciprocating property of the piston, convenience for maintenance, and capabilities of improving heat efficiency, improving rotating speed and meeting national energy-saving and environment-friendly requirements.

Description

Lever rocker arm type diesel engine

Technical field

The utility model relates to a kind of four-cycle diesel internal-combustion engine, is specifically related to a kind of lever rocker arm type diesel engine.

Background technique

Present diesel engine model and kind are a lot, adopt connecting rod mostly, and there is following defective in this structure: the one, and piston rod directly is connected with bent axle respectively, has produced huge reciprocal inertia force, makes that the inertia loss of piston, connecting rod is many; The 2nd, the piston rod pivot angle is bigger, and the side pressure of piston countercylinder wall is bigger, accelerates cylinder wear; The 3rd, maintenance difficult is brought inconvenience to production; The 4th, the thermal efficiency is lower, and the compression stroke wasted work is big during high speed.Therefore, the general rotating speed of the diesel engine of this structure is not more than 4000 rev/mins, and its use is very limited.

Summary of the invention

The technical problem that the utility model will solve is exactly the deficiency that overcomes above-mentioned existing technology, and provides a kind of simple in structure, and piston is good toward renaturation, can improve the thermal efficiency, improves rotating speed and lever rocker arm type diesel engine easy to maintenance.

For solving the problems of the technologies described above, the technological scheme of the utility model is:

A kind of lever rocker arm type diesel engine comprises body, is provided with cylinder in the body; Cylinder upper is installed with cylinder cap, with the cylinder inner wall coupling piston is installed, and is connected with connecting rod with piston; Be provided with the lever rocking arm in the said body, the middle part of lever rocking arm flexibly connects with the pitman arm shaft that is fixed on internal body, and said cylinder has four; Line up two row, be symmetrically distributed in lever rocking arm both sides, be respectively arranged with intake valve, exhaust valve and oil sprayer on the cylinder cap position of each cylinder correspondence; The two ends of lever rocking arm are installed with pitman shaft respectively; The connecting rod of pitman shaft and lever rocking arm one end flexibly connects, and the pitman shaft middle part of lever rocking arm one end is connected with big connecting rod, and the neck that turns of the big connecting rod the other end and one-throw crankshaft flexibly connects.

The rod hinge connection of said pitman shaft and lever rocking arm one end.

The pitman shaft middle part of said lever rocking arm one end is hinged with big connecting rod.

The working principle of the utility model:

The utility model is in when work, and the one-throw crankshaft revolution is crossed 180 degree, accomplishes air-breathing, compression, expansion, four strokes of exhaust in four cylinders successively; Because the effect of lever rocking arm, two cylinders will occur and carry out air-breathingly during respectively with expansion stroke, in other two cylinders, compress respectively and exhaust stroke; Like this; The inertia kinetic energy that produces in system's to-and-fro motion is absorbed by oneself again, eliminates the adverse effect of inertial impulse basically, but also can let the rotating speed of diesel engine increase; And the initial combustion pressure of diesel engine is improved, improve its thermal efficiency.

The beneficial effect of the utility model technological scheme is:

1, structurally, the said cylinder of the utility model has four, lines up two row; Be symmetrically distributed in lever rocking arm both sides, the two ends of lever rocking arm are installed with pitman shaft respectively, and the connecting rod of pitman shaft and lever rocking arm one end flexibly connects; Form a mutual pressing system, the inertia kinetic energy that system produces in to-and-fro motion is absorbed by oneself again, eliminates the adverse effect of inertial impulse basically; The reciprocal performance of piston is good, has improved the rotating speed of diesel engine, simultaneously; Also improve the initial combustion pressure of diesel engine, further improved its thermal efficiency.

2, structurally, the pivot angle of the said piston rod of the utility model is little, and the side pressure of piston countercylinder inwall reduces, and piston is back and forth smooth and easy, has improved the working life of cylinder and piston.

3, the utility model is simple in structure, and piston is good toward renaturation, can improve the thermal efficiency, improves rotating speed and easy to maintenance, meets country to energy conservation and environment protection, is very suitable for promotion and implementation.

Description of drawings

Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation, wherein:

Fig. 1 is the structural representation of the utility model lever rocker arm type diesel engine;

Fig. 2 is the plan structure schematic representation after lever rocker arm type diesel engine shown in Figure 1 is removed cylinder cap;

Sequence number among the figure: 1, oil sprayer, 2, cylinder cap 3, cylinder I, 4, the cylinder II, 5, the piston II, 6, the piston I; 7, connecting rod, 8, the lever rocking arm, 9, big connecting rod, 10, one-throw crankshaft, 11, the piston III; 12, piston IV, 13, the cylinder III, 14, the cylinder IV, 15, body, 16, intake valve; 17, exhaust valve, 18, pitman arm shaft, 19, pitman shaft, 20, turn neck.

Embodiment

Embodiment:

Referring to Fig. 1, Fig. 2, among the figure, the utility model lever rocker arm type diesel engine comprises body 15; Be provided with

cylinder

3,4,13,14 in the body 15,

cylinder

3,4,13,14 tops are installed with cylinder cap 2, with

cylinder

3,4,13,14

inwalls coupling piston

6,5,11,12 are installed; Be connected with connecting rod 7 respectively with

piston

6,5,11,12; Be provided with lever rocking arm 8 in the said body 15, the middle part of lever rocking arm 8 flexibly connects with being fixed on body 15 inner pitman arm shafts 18, and said four

cylinders

3,4,13,14 are lined up two row; Be symmetrically distributed in lever rocking arm 8 both sides; Be respectively arranged with intake valve 16, exhaust valve 17 and oil sprayer 1 on cylinder cap 2 positions of each

cylinder

3,4,13 or 14 correspondences, the two ends of lever rocking arm 8 are installed with pitman shaft 19 respectively, and pitman shaft 19 flexibly connects with the connecting rod 7 of lever rocking arm 8 one ends; Pitman shaft 19 middle parts of lever rocking arm 8 one ends are connected with big connecting rod 9, and the neck 20 that turns of big connecting rod 9 the other ends and one-throw crankshaft 10 flexibly connects; Said pitman shaft 19 is hinged with the connecting rod 7 of lever rocking arm 8 one ends; Pitman shaft 19 middle parts and the big connecting rod 9 of said lever rocking arm 8 one ends are hinged.

The present embodiment working procedure is following:

Start one-throw crankshaft 10, rotate counterclockwise, drive lever rocking arm 8 and swing up and down, lever rocking arm 8 drives piston I 6 again and moves upward with piston II 5; Piston III 11, piston IV 14 move downward simultaneously, carry out compression stroke in the cylinder I 3 at this moment, carry out exhaust stroke in the cylinder II 4, carry out suction stroke in the cylinder III 13; Carry out expansion stroke (not doing work when just starting) in the cylinder IV 14, when one-throw crankshaft 10 rotated 180 degree (counting from shown position), the compression stroke of cylinder I 3 was accomplished, oil sprayer 1 oil spout in cylinder I 3; Oil firing acting promotes piston I 6 and moves downward, and piston II 5 also moves downward simultaneously, and piston III 11, piston IV 12 move upward; At this moment carry out compression stroke in the cylinder III 13, carry out exhaust stroke in the cylinder IV 14, carry out suction stroke in the cylinder II 4, carry out expansion stroke in the cylinder I 3; When one-throw crankshaft 10 rotates 180 again when spending, the compression stroke of cylinder III 13 accomplish (simultaneously it also absorption system inertia can), oil sprayer 1 oil spout to cylinder III 13 in, oil firing does work; Promote piston III 13 and move downward, piston IV 14 also moves downward simultaneously, and piston I 6, piston II 5 move upward, and at this moment carry out compression stroke in the cylinder II 4 again; Same one-throw crankshaft 10 rotates 180 when spending again, the compression stroke of cylinder II 4 accomplish (simultaneously it also absorption system inertia can), oil sprayer 1 oil spout in cylinder II 4; The oil firing acting promotes piston II 4 and moves downward, and piston III 11, piston IV 14 move upward; At this moment carry out compression stroke in the cylinder IV 14 again, when one-throw crankshaft 10 rotates 180 again when spending, the compression stroke of cylinder IV 14 is accomplished; Oil sprayer 1 oil spout in cylinder IV 14, the oil firing acting promotes piston IV 14 and moves downward; Piston I 6, piston II 5 move upward, and at this moment begin to carry out compression stroke in the cylinder I 3 again, and one-throw crankshaft 10 is rotated further; Four pistons constantly repeat above action, and fuel oil is successively at four combustor inner cylinders, thus the conversion of completion hot merit.

The above is merely the schematic embodiment of the utility model; Be not in order to limit the scope of the utility model; Equivalent variations and modification that any those skilled in the art is made under the prerequisite that does not break away from the utility model design and principle all should belong to the scope that the utility model is protected.

Claims

1. a lever rocker arm type diesel engine comprises body, is provided with cylinder in the body; Cylinder upper is installed with cylinder cap, with the cylinder inner wall coupling piston is installed, and is connected with connecting rod with piston; It is characterized in that: be provided with the lever rocking arm in the said body, the middle part of lever rocking arm flexibly connects with the pitman arm shaft that is fixed on internal body, and said cylinder has four; Line up two row, be symmetrically distributed in lever rocking arm both sides, be respectively arranged with intake valve, exhaust valve and oil sprayer on the cylinder cap position of each cylinder correspondence; The two ends of lever rocking arm are installed with pitman shaft respectively; The connecting rod of pitman shaft and lever rocking arm one end flexibly connects, and the pitman shaft middle part of lever rocking arm one end is connected with big connecting rod, and the neck that turns of the big connecting rod the other end and one-throw crankshaft flexibly connects.

2. lever rocker arm type diesel engine according to claim 1 is characterized in that: the rod hinge connection of said pitman shaft and lever rocking arm one end.

3. lever rocker arm type diesel engine according to claim 1 is characterized in that: the pitman shaft middle part of said lever rocking arm one end is hinged with big connecting rod.