CN2229972Y

CN2229972Y - Lubriating device for petrol engine

Info

Publication number: CN2229972Y
Application number: CN 94235709
Authority: CN
Inventors: 陶志新
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-07
Filing date: 1994-11-07
Publication date: 1996-06-26
Anticipated expiration: 2004-11-07

Abstract

The utility model relates to a motorcycle lubricating device for petrol engine. The present petrol engine container is equipped with an oil channel, one end of which is communicated with the oil pump, and the other end of which is led to the crankshaft chamber. The end surface of the throw of crankshaft is equipped with a seal groove where a sealing ring is inserted. Under the action of the sealing ring, an oil box is formed between the end surface of the rotary crankshaft and the stationary container, therefore, the fluid oil from the oil pump can be injected into the rotary crankpin center bore, and then into the crankshaft needle roller bearing through the two small holes. The utility model can realize the splash lubricating of the crankshaft without altering the volume of the original petrol engine or the pressure of the oil pump.

Description

The gasoline engine lubricating device

The utility model relates to a kind of motorcycle gasoline engine lubricating fitting, is used for the lubricating fitting at four-stroke gasoline engine bent axle position.

At present, the lubricated bent axle diameter of axle center hole that mostly adopts in four-stroke gasoline engine bent axle position is crossed oil to the crank pin center hole, realizes splash lubrication.This realizes in oil soaked clutch or oil immersed type magnetogenerator structure easily, if petrol engine is to adopt dry clutch or dry type magnetogenerator, crosses oily structure with bent axle diameter of axle center hole and then is difficult to realize splash lubrication.

The purpose of this utility model provides and a kind ofly can not increase existing petrol engine volume or not change the gasoline engine lubricating device of realizing splash lubrication under the situation of oil pump pressure easily.

The purpose of this utility model realizes by following measure:

Open an oil duct on the petrol engine casing, an end communicates with oil pump, and the other end leads to crankshaft room, opens a seal groove on the crankshaft crank end face, inserts a seal ring, and seal ring exceeds about 1 millimeter of crank end face, and the seal ring cross section can be the table tennis bat shape.Because the effect of seal ring, will between the crankshaft end-face of rotation and static casing, form the grease chamber, the lubricant oil from oil pump will be injected into the lubricant housings by this grease chamber like this--the bent axle needle bearing.

The utility model does not change, does not increase original volume and oil pump pressure substantially to the structure of existing four-stroke gasoline engine, can realize splash lubrication.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is a structure perspective view of the present utility model.

Fig. 2 is the structural representation at seal ring position in the utility model.

Wherein: 1. piston, 2. connecting rod, 3. needle bearing, 4. crank pin, 5. crank pin center hole, 6. crank, 7. seal ring, 8. casing, 9. oil duct, 10. bearing, 11. oil sealings.

Embodiment:

As shown in Figure 1, open the logical oil pump of an end of the oil duct (9) on casing (8), the other end communicates with crankshaft room, and is normally in service at petrol engine, and crank (6) rotates, seal ring (7) is in the seal groove of crank (6), will form a grease chamber like this, be injected in the grease chamber, and in crank (6) rotation, oil is injected in the crank pin center hole (5) from the lubricant oil of oil pump, because centrifugal action, lubricant oil flows on the needle bearing (3) through two apertures.Implement lubricated back under the inertial force effect, it is lubricated that excess oil is splashed to piston (1) position along connecting rod (2).

As shown in Figure 2, seal ring (7) can be made the shape of cross section as the table tennis bat sample, thick about 0.4 milli of its shank, combine with casing (8) in order to support the spherical position of seal ring, like this, because machining error, its gap all can make seal ring play seal action in 0.5-1 millimeter scope when crank (6) and casing (8).

Claims

1. gasoline engine lubricating device, comprise petrol engine casing, crankshaft crank, piston, connecting rod, needle bearing, crank pin center hole, it is characterized in that, open an oil duct on the casing, the one end communicates with oil pump, and the other end leads to crankshaft room, opens a seal groove on bent axle one crank end face, insert seal ring, seal ring exceeds the crank end face.

2. gasoline engine lubricating device as claimed in claim 1 is characterized in that, seal ring exceeds crank end face 1mm.

3. gasoline engine lubricating device as claimed in claim 1 is characterized in that, seal ring can be made the cross section and become the table tennis bat shape.