JPS5879645A - Lubricating device of engine - Google Patents

Abstract

PURPOSE:TO improve lubrication and a sealing effect, by surrounding introducing ports with oil grooves, providing the oil grooves in an internal surface of a cylinder, then both holding oil and forming a labyrinth seal in the periphery of the introducing ports. CONSTITUTION:Oil grooves 9, in a depth of 0.5-1mm. and width of 1mm., are formed in upper and lower side two stages of an introducing port 3 to an internal surface of a cylinder 1. In this way, oil is stored to prevent shorts of oil and improve lubrication, while a labyrinth seal is presented to the periphery of the introducing port 3, and a good seal can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a bipolar reservoir device for a vehicle engine.

The present applicant previously proposed this device with 5llll of cylinders.
IkK1 A type with an inlet for secondary air or other air that is closed by the reciprocating movement of the piston inside it. In order to prevent lubricating oil from being carried along with the piston and being discharged into the iron inlet, we proposed a type that includes an oil ring, a labyrinth, and other oil i11I1ms materials outside the lower end of the piston, and furthermore, this In order to prevent the lubricating oil that adheres to the inner N1 surface of the cylinder from running out due to the blowing of the lubricating oil, an oil groove is provided on the surface facing the resuscitation inlet of the fitting piston. The ninth problem is that the %D oil in this case simply functions to retain oil, and it also has a sealing function.
It is preferable to use K so that it can be performed.

The present invention provides a device that exploits such claims.
If the hook wall of the cylinder has an inlet port tm for introducing secondary air and other air which is opened and closed by the reciprocating movement of the piston inside the cylinder, K1m! In a cylinder equipped with an oil ring, a labyrinth O, or other oil volume adjustment member on the outside of the lower end of the cylinder, the oil supply inlet is surrounded by the inside of the cylinder O, and at least the upper and lower parts of the cylinder O are connected. It is formed by forming an oil groove.

An example of the implementation of the present invention will be described in attached sheet (2).

In the drawing, (1) is a cylinder, (2) is a screw cylinder that reciprocates up and down inside the cylinder, and m- of the cylinder il+ is an inlet for secondary air and other air that is opened and closed by the reciprocating movement of the piston (2). (3) is provided. In the drawing, (4) (51Fi) is the upper intake and exhaust valve, (6) is the connecting rod extending downward,
(7) shows the crankshaft below it. The introduction port (3)
In the case shown in the figure, it is located at the upper hook near the bottom dead center of the piston (2), and this is included in the garden style where secondary air is rumored, and this is placed in the two pieces - and 21h on the other side. However, the present invention is not limited to engines of this type, and can be applied to Fi2-cycle engines in substantially the same way.The piston (2) is located at the outer end of its lower end and has a labyrinth type. d! is introduced into the cylinder (1) from below by a splash type. 4. This acid is made to act on the pickling oil or the koji to be scraped off. Although it is not particularly based on what was provided above, according to the present invention, the piston (1) is opposed to the piston (1). The cylinder (II) is equipped with an oil groove (9 grooves) surrounding the cylinder (II).
0 To explain further, the oil groove t91 Fi is a reservoir type consisting of two stages, upper and lower, as shown in FIG. The corners are rounded (9a), and in this case each corner is rounded (1!) in the vertical direction as shown in #5. ! i! Block out the epilepsy
To explain further, the roundness (9b) of each corner in the case of 1pJ4 illustrated
&) is made to act to reduce the sliding resistance with the piston ring, and discontinuous 5 (9b) in the lower case of Fig. 5 is made to act to prevent downward short circuit of blow-by gas. .

In addition, the oil groove (9) is etched! It is made by 62ii machining, and its depth is 0.5 to 1 inch, and the width is 1-1 inch.
degree.

In this way, according to the present invention, the oil groove is made by surrounding the cylinder with four holes, and the oil groove holds oil inside to improve lubricity, almost the same as when it is made on the piston side. The oil groove surrounds the inlet and provides a labyrinth seal on the outside 11, which is effective for good sealing in the case of secondary air, for example. write

[Brief explanation of the drawing]

1st! li! 1 is a cross-sectional view of an example of the device of the present invention, 2nd
The figure is a cross-sectional view taken along the line ■-■, Figure 5 is a front view of the main part, Figures 4 and 5 are the normal IWJ of each modified cedar example (II... ...Cylinder (2)・III 1+6@@-Bisshin (3) River se
ama introduction port (8) ------・Oil amount adjustment member (91-----・Oil ditch agent Aki-ji Kitamura, ., l! and 2 other people)

Claims (1)

[Scope of Claims] In L S/9 cylinder 0*m, an inlet for secondary air and other air which is generated by the reciprocating movement of the piston therein is opened, and an oil ring is attached to the outer periphery of the lower end of the lW kite. 1. A reservoir device for an engine, which is equipped with a labyrinth or other oil amount adjusting member, and has an oil groove formed in the inner surface of the cylinder, surrounding the inlet, and at least in the upper and lower parts of the cylinder. 2- An engine lubricating device according to claim 1, in which the oil groove is formed as a whole into a substantially square shape.a. The oil groove is discontinuous at each corner of the square. A lubricating device for an engine according to claim 21I.