CN2276993Y

CN2276993Y - Uper-blowing leakage purifying device of cylinder end cap for motorcycle engine

Info

Publication number: CN2276993Y
Application number: CN 96216913
Authority: CN
Inventors: 方金辉; 李金兴; 汪克敏
Original assignee: Sanyang Industry Co Ltd
Current assignee: Sanyang Industry Co Ltd
Priority date: 1996-06-24
Filing date: 1996-06-24
Publication date: 1998-03-25
Anticipated expiration: 2006-06-24

Abstract

The utility model relates to an upper-blowing leakage purifying device of the cylinder end cap for a motorcycle engine. A baffle plate is arranged at the lateral face near a timing gear chain at the inner part of the cylinder end cap, the baffle plate prevents most engine oil and oil gas carried by the running of the timing gear chain, a labyrinth is arranged at the inner part of the cylinder end cap, the corresponding position relationship of the structure and the opening position of the labyrinth and the fixing seat of a cam shaft to cause multiple barriers to blowing leakage gas produced at the inner part of a cylinder, and the exhaust quantity of the oil gas is effectively reduced.

Description

Motorcycle is with blowing the gas leakage purification plant on the cylinder skull of engine

The utility model relates to a kind of motorcycle with blowing the gas leakage purification plant on the cylinder skull of engine.

Generally the generation reason of blowing gas leakage in crankcase at motorcycle mainly contains three:

(1) gas leakage of engine pistons czermak space compression stroke and crankcase that explosion stroke drains into.

(2) drain into the gas leakage of cylinder skull between outlet valve and the valve guide.

The machine oil steam that is produced when (three) the engine internal temperature is high.

According to environmental regulation regulation, therefore blowing gas leakage and must not being disposed to atmosphere of motor engine crankcase must have suitable design to reduce the discharge of blowing gas leakage.

Yet use in the engine at general motorcycle, for reaching the purpose of Oil-gas Separation, employing is provided with a labyrinth or installs the effect that a control mechanism produces Oil-gas Separation additional in crankcase inside in the cylinder skull, and blow the gas leakage purification plant on the existing mazy type when the SEM screw SEM Scr fixed cover, must adopt manual type to coat stuffing (Packing) and come combination, cause the waste in man-hour, and easily cause coating inhomogeneous because of the coated side area is less.And owing to take simple baffle plate and labyrinth configuration in the existing cylinder skull, make the gas of discharging have the machine oil of high-load, cause valve and valve seat carbon distribution, cause adaptation poor, influence engine performance.

The purpose of this utility model is to provide blows gas leakage purification plant (Positive Crankcase Ventilation on the cylinder skull of a kind of motorcycle with engine, PCV), the layout of a kind of cylinder skull inner space particularly is provided, and utilizes simple pad and cover plate to reach the convenience of combination; Particularly effectively stop the machine oil that blows on most in the gas leakage with baffle plate, and the relative position relation that utilizes the structure in labyrinth and aperture position and cam fixed base comes the machine oil in the multiple residue oil gas of being detained, effectively reduce and blow the machine oil content of gas leakage, and unlikely generation carbon distribution phenomenon keeps good engine performance.

The motorcycle that provides according to the utility model is with blowing the gas leakage purification plant on the cylinder skull of engine, in this cylinder skull, be provided with a baffle plate, it is arranged in and intercepts the timing gear chain from the entrained most of machine oil that comes up of crankcase and the position of oil gas, be positioned on the intracranial camshaft fixed base of this cylinder and have the multiple tracks barricade, and a labyrinth with opening is set in this cylinder skull.

Wherein, this baffle plate is arranged at the side of this timing gear chain.

Wherein, the aperture position in this labyrinth is positioned at the one side in this labyrinth, and the lock that is adjacent to this camshaft fixed base is paid the side of double-threaded screw bolt seat.

Wherein, this inside, labyrinth is provided with multiple tracks and intercepts barricade.

Wherein, a side in this labyrinth is paid by the combination covering and the lock of pad, cover plate, screw fixed base and several screws.The combination of this pad, cover plate, screw fixed base and several screws replaces artificial gummed stuffing.

Existing conjunction with figs. illustrates preferred embodiment of the present utility model.

Fig. 1 is the assembled view of existing cylinder skull internal structure;

Figure 1A is an A-A sectional drawing among Fig. 1;

Fig. 2 is that the inner labyrinth of existing cylinder skull is arranged and tamping applies position view;

Fig. 2 A is a B-B sectional drawing among Fig. 2;

Fig. 3 is for blowing the three-dimensional exploded view of gas leakage purification plant and inner each primary component of cylinder block on the utility model cylinder skull;

Fig. 4 is for blowing the three-dimensional exploded view of inner position, labyrinth of gas leakage purification plant and baffle position on the utility model cylinder skull;

Fig. 5 is for blowing the internal structural map of gas leakage purification plant on the utility model cylinder skull;

Fig. 5 A is a C-C sectional drawing among Fig. 5;

Fig. 6 is for blowing the schematic representation of gas leakage purification plant and camshaft fixed base relative position in the cylinder-head cover inner space on the utility model cylinder skull;

Fig. 6 A is a D-D sectional drawing among Fig. 6;

Fig. 7 is the labyrinth structure shown in Figure 5 and the partial enlarged view of aperture position;

Fig. 7 A is an E-E sectional drawing among Fig. 7;

Fig. 7 B is a F-F sectional drawing among Fig. 7.

See also shown in Figure 1ly, the structure of existing cylinder skull inside comprises cylinder skull body 6, baffle plate 61, timing gear chain receiving space 62, stuffing 63, screw fixed base 64, screw 66, screw hole 67 and exhaust port 69.Wherein, after stuffing 63 bondings of screw fixed base 64 by artificial gummed, pay on screw hole 67, utilize the extension projection of this screw fixed base 64 to withhold on this screw 66, to prevent the loosening of these screws by screw 66 locks.Can know by the open passage in the structure of inner each the simple block 61 of cylinder-head cover and this labyrinth and to find out, under continuous operation cycle, machine oil sprays when producing lubricating parts in cylinder skull inside top surface through pump pressure process, the oil gas composition (representing flowing of oil gas) that relatively has floorboard with high oil content with T in the inner space, and, when the entrained machine oil that makes progress of timing gear chain is crossed block 61 easily, the engine pistons czermak space is in the gas leakage of compression stroke and crankcase that explosion stroke drains into, the gas leakage of the cylinder skull that drains between outlet valve and the valve guide, the machine oil steam that the engine internal high-temperature is produced, all can carry a large amount of machine oil secretly and discharge, shown in Figure 1A through oil gas vent 69.

Fig. 2 takes off for the screw fixed base 64 with existing cylinder skull inside, the stuffing 63 artificial schematic representation that apply position (as representing with dot area among Fig. 2).Because in anabolic process, must stuffing 63 evenly be coated the vast zone of screw fixed base 64 contacts via manual type, therefore quite time-consuming and be difficult for reaching uniformity, and as easy as rolling off a logly under the condition of high temperature in cylinder cause coming off of stuffing 63 and become impurity, reduce the machine oil quality and influence lubricity.

See also three-dimensional exploded view of the present utility model shown in Figure 3, by the compound mode shown in the figure be in regular turn: camshaft fixed pedestal 4 places on the cylinder head 5, timing gear 31, camshaft 33 and bearing 32,34 combination places on the cam fixed pedestal 4, camshaft fixed base 2 is across bearing 32, on 34 and in alignment with the relative position of camshaft fixed pedestal 4, utilize double-threaded screw 23, after the locking of pad 22 and nut 21, inside is included screw 16, screw fixed cover 15, the cylinder-head cover of ventilation place cover plate 14 and ventilation place pad 13 is buckled in the relative fixed position of cylinder head 5.

Fig. 4 represent cylinder skull of the present utility model on blow the relevant position of labyrinth 10, aperture position worker and baffle plate 11 of gas leakage purification plant, ventilation place pad 13, ventilation place cover plate 14 and screw fixed cover 15 are locked in the screw hole 17 in labyrinth 10 by several screws 16.

Consult the internal structure view of going up air blowing gas leakage purification plant of the utility model cylinder skull shown in Figure 5, and please contrast shown in Figure 2 in the lump, the internal structure of cylinder skull 1 of the present utility model is done one relatively down with the relative function parts of existing cylinder skull 6 inside, can find out significantly that baffle plate 11 of the present utility model has intercepted this timing gear chain entrained most of machine oil and oil gas that comes up from fuel tank; The aperture position worker in labyrinth 10 of the present utility model is adjacent to the lock of camshaft fixed base 2 and pays by the stud bolt seat, remaining oil gas is paid the formed multiple tracks barricade of stud bolt seat through the lock of camshaft fixed base 2 and is stopped part machine oil in the oil gas, enter the aperture position worker in labyrinth 10 subsequently and entered labyrinth 10, reduce the machine oil discharge capacity at oil gas vent 19 places effectively, labyrinth promptly of the present utility model 10 miniaturizations also have inner multiple barricade with the machine oil in the remaining oil gas of being detained.

Consult the utility model cylinder skull shown in Figure 6 on blow gas leakage purification plant and the relative position of camshaft fixed base 2 in cylinder-head cover 1 inner space, because the part of camshaft fixed base 2 is positioned at before the aperture position worker in labyrinth 10, effectively stops most of remaining oil gas.Frame of broken lines among Fig. 6 A is represented the schematic representation that camshaft fixed base 2 is in height occupied.

Labyrinth 10 in Fig. 7 presentation graphs 5 and aperture position worker's partial enlarged drawing are by can effectively be detained machine oil in the remaining oil gas of inner each the wall height position distribution in the labyrinth shown in the figure 10.

Claims

1, a kind of motorcycle is with blowing the gas leakage purification plant on the cylinder skull of engine, it is characterized in that: in this cylinder skull, be provided with a baffle plate, it is arranged in and intercepts the timing gear chain from the entrained most of machine oil that comes up of crankcase and the position of oil gas, be positioned on the intracranial camshaft fixed base of this cylinder and have the multiple tracks barricade, and a labyrinth with opening is set in this cylinder skull.

2, device as claimed in claim 1 is characterized in that: this baffle plate is arranged at the side of this timing gear chain.

3, blow the gas leakage purification plant on as claimed in claim 1, it is characterized in that: the aperture position in this labyrinth is positioned at the one side in this labyrinth, and the lock that is adjacent to this camshaft fixed base is paid the side of double-threaded screw bolt seat.

4, blow the gas leakage purification plant on as claimed in claim 1, it is characterized in that: this inside, labyrinth is provided with multiple tracks and intercepts barricade.

5, blow the gas leakage purification plant on as claimed in claim 1, it is characterized in that: a side in this labyrinth is covered by the combination of pad, cover plate, screw fixed base and several screws and lock is paid.