CN202732021U - Oil injection system of engine - Google Patents
Oil injection system of engine Download PDFInfo
- Publication number
- CN202732021U CN202732021U CN 201220283781 CN201220283781U CN202732021U CN 202732021 U CN202732021 U CN 202732021U CN 201220283781 CN201220283781 CN 201220283781 CN 201220283781 U CN201220283781 U CN 201220283781U CN 202732021 U CN202732021 U CN 202732021U
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- Prior art keywords
- injection system
- oil
- cylinder
- oil supply
- supply gallery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an oil injection system of an engine. The oil injection system comprises an oil supply channel which communicates an oil pan with a crankshaft case, wherein lubricating oil enters the crankshaft case through the oil supply channel, one end of the oil supply channel is provided with an oil injection port, and the oil injection port is formed in a sidewall of a cylinder and located below a lower dead point of a piston. According to the oil injection system of the engine, disclosed by the utility model, cylinder walls of the engine and the crankshaft case can be sufficiently lubricated, and meanwhile, a channel from a lubricating oil tank to a crankshaft is simplified, so that the processing and manufacturing are facilitated.
Description
Technical field
The utility model relates to a kind of motor injection system.
Background technique
As the hand-held shears for lawns take vegetation as object (cut-off machine) and Backpack power machine, traditional two-stroke and four-stroke small-sized universal engine have been widely used as driving operating personnel oneself motor portable or that bearing the working machine that carries out operation.Because it is more and more stricter that the pollutant emission regulation becomes, so driving source is improved day by day from the demand that two-stroke is replaced by four stroke engine, yet four stroke engine has more complicated lubrication system, this so that motor when moving with the angle of inclination, not too work.The lubricated main design problem that becomes each motor manufacturer only has Honda Company to be used for the four stroke engine that can work of batch production by the EP835987 patented technology now under various angles of inclination.This technology adopts Special oil tank around being installed in rotating blade on the bent axle producing mist of oil, but designed engines is wider in this way, and heavier, cost is higher.The motor that also has adopts the lubricated crankcase of the mode of ejection lubricant oil, but jet is located on the bent axle usually, causes bent axle upper cylinder inwall not obtain sufficient lubricant oil, affects lubrication effect.
Engine lubricating oil is stored in the lubricating oil tank usually, behind ato unit, lubricant oil enters crankcase from lubricating oil tank and is lubricated, existing motor is provided with jet at bent axle usually, lubricant oil sprays into crankcase by jet, its defective is that bent axle is positioned at the cylinder bottom, the shortage of oil of jet on bent axle ejection so that cylinder wall lubricated fully.Path from the lubricating oil tank to the crankcase is complicated simultaneously, and processing is inconvenient.
The model utility content
The utility model provides a kind of motor injection system in order to address the above problem, and can make engine air casing wall and crankcase obtain sufficient lubrication, simplifies simultaneously the passage from the lubricating oil tank to the bent axle, is convenient to manufacturing, and it is achieved through the following technical solutions:
A kind of motor injection system comprises the oil supply gallery that is communicated with food tray and crankcase, and lubricant oil enters crankcase by oil supply gallery, and described oil supply gallery one end is jet, and jet is arranged on the cylinder sidewall, and is positioned at piston lower dead centre below.
Preferably, described injection system also comprises the cam chamber cap, and described oil supply gallery has at least part to be arranged on cam chamber and to cover.
Preferably, described oil supply gallery comprises the first one-way valve.
Preferably, cam chamber covers and is provided with cavity, and described the first one-way valve places in the cavity.
Preferably, described oil supply gallery is at least part of is spliced to form by cylinder and cylinder block.
Preferably, the passage that is spliced of described cylinder and cylinder block is the annular pass.
Preferably, the annular pass on described cylinder and the cylinder block is respectively equipped with slotted eye and lower slotted eye.
The disclosed injection system of the utility model is simple in structure, makes simultaneously motor have better lubrication effect.
Description of drawings
Fig. 1 is the utility model embodiment's sectional view.
Fig. 2 is the schematic diagram of the utility model embodiment lubrication system.
Fig. 3 is the utility model embodiment's sectional view.
Fig. 4 is the worm's eye view of the utility model embodiment cylinder.
Fig. 5 is the plan view of the utility model embodiment cylinder block.
Fig. 6 is the worm's eye view of the utility model embodiment cylinder block.
Embodiment
Come the utility model is described further below in conjunction with specific embodiment.
As shown be the four stroke engine of the utility model preferred implementation, comprise crankcase 1, food tray 2, cam chamber 3, rocker arm chamber 4 and air filter 6.Food tray 2 is used for storing lubricant oil, and food tray 2 tops are crankcase 1, and bent axle 10 is arranged in the crankcase 1 and engages with piston 7 in the cylinder 8,, food tray 2 and crankcase 1 are by oil supply gallery 21 connections.The below of crankcase 1 is provided with distributor chamber 5, crankcase is communicated with by the first oil transportation channel 15 with distributor chamber, distributor chamber 5 can carry out Oil-gas Separation, the liquid lubricant oil of separating flows into food tray 2 by separation chamber's small hole at bottom part, remaining gaseous state lubricant oil passes through, and the second oil transportation channel 53 enters cam chamber 3.Cylinder 8 tops are provided with rocker arm chamber 4, and the lubricant oil in the cam chamber 3 enters rocker arm chamber 4 by the 3rd oil transportation channel 34, and the parts in the rocker arm chamber 4 are lubricated.Lubricant oil in the rocker arm chamber 4 is got back to crankcase 1 by drainback passage 41, and the gas in the rocker arm chamber 4 enters air filter 6 by vent passage 46.Lubricant oil in the air filter 6 enters crankcase 1 by returning oily passage 61.The engine lubrication system of the present embodiment (such as Fig. 2), utilize the motion of piston 7 to make the pressure in the crankcase produce checker, make lubricant oil in oil supply gallery 21, the first oil transportation channel 15, the second oil transportation channel 53, the 3rd oil transportation channel 34, drainback passage 41, vent passage 46, return in the oily passage 61 circulation, lubricant oil is provided for the region of interest of motor.
In the lubrication system of motor, injection system is that the lubricant oil that will store in the food tray is introduced in the crankcase, injection system comprises oil supply gallery 21, the end of oil supply gallery 21 in food tray 2 is provided with oil suction section 215 (such as Fig. 1), described oil suction section 215 can tilt or inverted direction is rolled along with motor, guarantees the lubricant oil that motor can both be drawn onto in the food tray 2 in any position oil suction section 215.Oil supply gallery 21 the other ends are jets 210, jet 210 on the sidewall of cylinder 8 and be positioned at piston 7 lower dead centres below, that is to say, moving up and down of piston 7 can't shelter from jet 210, jet 210 is in open state always, and the lubricant oil of drawing from food tray 2 sprays into crankcase 1 from jet 210.When the pressure in the crankcase 1 during less than the pressure in the food tray 2, the lubricant oil in the food tray 2 spray into crankcase by jet.Because jet 210 in the higher position of the sidewall of cylinder 8, is higher than the position of bent axle simultaneously, so the oil of jet 210 ejection makes on cylinder 8 inwalls and has more large-area lubricant oil, simultaneously, makes that associated components has more lubricant oil on the bent axle.Described oil supply gallery 21 comprises annular pass 211, and annular pass 211 is spliced by the groove that is arranged on cylinder 8 and the cylinder block 9 respectively.The groove of the annular pass 211 on the cylinder 8 is provided with slotted eye 214, the groove of the annular pass 211 on the cylinder block 9 is provided with lower slotted eye 213, oil in the oil supply gallery 21 enters annular pass 211 by lower slotted eye 213, flow to upper slotted eye 214 around the annular pass, lubricant oil flows into camb cap passage 216 from upper slotted eye 214, described camb cap passage 216 is the part of oil supply gallery 21, camb cap passage 216 is arranged on (as shown in Figure 3) on the cam chamber cap 31, described cam chamber cap 31 is cover plates that cover on the cam chamber 3, sprays into crankcase through the lubricant oil of camb cap passage 216 through hole 112 by on the camshaft 502 through jet.Oil supply gallery 21 also is provided with the first one-way valve 212, the first one-way valves 212 and opens during for negative pressure in crankcase 1, closes during for malleation in the crankcase 1.Described the first one-way valve 212 be located at the coaxial cavity 302 of through hole 112 in, described cavity 302 is on cam chamber cap 31, cavity 302 all is cylindrical hole with through hole 112, their diameter is about equally.Therefore, when processing through hole 112, as long as process a little more deeply, just can form cavity 302, then the first one-way valve 212 can be placed cavity 302, reduce difficulty of processing, the convenient manufacturing.
The injection system that the utility model discloses, oil circuit is simple, and low cost of manufacture brings better lubrication effect can for engine air casing wall and crankcase.Above-mentioned mode of execution is preferred implementation of the present utility model, any conversion that does not break away from the utility model spirit or replace all in protection domain of the present utility model.
Claims (7)
1. motor injection system, comprise the oil supply gallery (21) that is communicated with food tray (2) and crankcase (1), lubricant oil enters crankcase (1) by oil supply gallery (21), it is characterized in that: described oil supply gallery (21) one ends are jet (210), jet (210) is arranged on cylinder (8) sidewall, and is positioned at piston (7) lower dead centre below.
2. motor injection system as claimed in claim 1, it is characterized in that: described injection system also comprises cam chamber cap (31), described oil supply gallery (21) has at least part to be arranged on the cam chamber cap (31).
3. motor injection system as claimed in claim 2, it is characterized in that: described oil supply gallery (21) comprises the first one-way valve (212).
4. motor injection system as claimed in claim 3, it is characterized in that: cam chamber cap (31) is provided with cavity (302), and described the first one-way valve (212) places in the cavity (302).
5. motor injection system as claimed in claim 1, it is characterized in that: described oil supply gallery (21) is at least part of to be spliced to form by cylinder (8) and cylinder block (9).
6. motor injection system as claimed in claim 5, it is characterized in that: the passage that described cylinder (8) and cylinder block (9) are spliced is annular pass (211).
7. motor injection system as claimed in claim 6, it is characterized in that: the annular pass on described cylinder (8) and the cylinder block (9) is respectively equipped with slotted eye (214) and lower slotted eye (213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220283781 CN202732021U (en) | 2012-06-15 | 2012-06-15 | Oil injection system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220283781 CN202732021U (en) | 2012-06-15 | 2012-06-15 | Oil injection system of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732021U true CN202732021U (en) | 2013-02-13 |
Family
ID=47657732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220283781 Expired - Fee Related CN202732021U (en) | 2012-06-15 | 2012-06-15 | Oil injection system of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185471A1 (en) * | 2012-06-15 | 2013-12-19 | 苏州科瓴精密机械科技有限公司 | Oil injection system of engine |
-
2012
- 2012-06-15 CN CN 201220283781 patent/CN202732021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185471A1 (en) * | 2012-06-15 | 2013-12-19 | 苏州科瓴精密机械科技有限公司 | Oil injection system of engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180615 |