CN203374363U - Diesel engine power cylinder combination mechanism - Google Patents
Diesel engine power cylinder combination mechanism Download PDFInfo
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- CN203374363U CN203374363U CN201320366765.8U CN201320366765U CN203374363U CN 203374363 U CN203374363 U CN 203374363U CN 201320366765 U CN201320366765 U CN 201320366765U CN 203374363 U CN203374363 U CN 203374363U
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- piston
- connecting rod
- diesel engine
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- pin
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- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a diesel engine power cylinder combination mechanism. The diesel engine power cylinder combination mechanism comprises a cylinder body, a cylinder sleeve, a piston, an upper piston compression ring, a middle piston compression ring, a piston oil ring, a piston pin, a piston pin retainer, a connecting rod, a connecting rod bush, an upper connecting rod bearing, a lower connecting rod bearing and a piston cooling nozzle, wherein the piston is installed in the wet cylinder sleeve, the upper piston compression ring, the middle piston compression ring and the piston oil ring are assembled in three ring grooves in sequence from top to bottom, the connecting rod is assembled on a pin hole portion of the piston through the piston pin and the piston pin retainer, the copper alloy bush is installed at the small end of the connecting rod in a pressed mode, the upper connecting rod bearing and the lower connecting rod bearing are installed at the large end of the connecting rod, the piston cooling nozzle is installed on the cylinder body, and is arranged at the bottom of the cylinder sleeve, an Ni-P composite coating with the thickness of 50-100 microns is arranged on the outer surface of the cylinder sleeve, the piston is an aluminum-casting piston, a combustion chamber is of an omega shape, one or two valve avoiding pits are formed in the position, corresponding to an exhaust valve, of the top of the piston, a grain re-melting or ceramic fiber reinforced layer is arranged at the position of a throat opening of the piston, and the obverse side of the pin hole is oval, and is not provided with a bushing.
Description
Technical field
The utility model belongs to diesel engine component structural design field, is specifically related to a kind of diesel engine ram combined mechanism.
Background technique
Diesel powered cylinder mechanism is the source that motor produces power.Ram mechanism works long hours in the rugged environment of High Temperature High Pressure, and heat load and mechanical load are far above other operation mechanism.Along with diesel engine, constantly towards the future development of speed up and heavy loading, consequent heat load and mechanical load are more and more higher, and traditional ram has been difficult to meet usage requirement.Environmental protection consciousness grows with each passing day simultaneously, how to meet the even state's V discharge of state's IV, also becomes a great problem of restriction diesel engine development.
On the other hand, the application demand of motor is promoting ram mechanism and is constantly carrying out technological innovation, particularly anti-cavitation pitting cylinder sleeve, remelting/ceramic fiber strengthens the aluminium piston, the technology such as compression ring, fractured connecting rod successively occur on bucket face piston partially, becomes the basis that more the ram mechanism of high reliability and durability occurs.Regrettably, have not yet to see the disclosed report that has combined the ram combination of above up-to-date part technology.
Therefore, how to integrate current state-of-the-art component technology, further improve reliability and the durability of ram system, but the ram product of exploitation commercial applications, become the outer important topic of Present Domestic, be of great practical significance and use value.
Summary of the invention
The purpose of this utility model is to provide a kind of diesel engine ram combined mechanism, and cavitation pitting, the physical dimension that the solution commercial car is brought to diesel engine under high speed and heavy-duty applications environment is large, power per liter is low, consume fuel oil, consumable lubricating oil, the poor problem of emission performance.
The technical solution of the utility model is as follows: a kind of diesel engine ram combined mechanism of the present utility model comprises on cylinder body, cylinder sleeve, piston, piston compression ring, oil piston ring, wrist pin, retaining ring for piston pin, connecting rod, connecting rob bushing, connecting rod on watt, connecting rod lower half bearing and piston cooling nozzle in compression ring, piston, piston is arranged in wet cylinder liner, three annular grooves are distinguished fit on compression ring, middle compression ring and oil ring from top to bottom, and connecting rod is assemblied in the pin-and-hole position of piston by wrist pin and retaining ring for piston pin; Connecting rod small end is pressed with a copper alloy bushing, and a slice connecting rod on watt and connecting rod lower half bearing are housed in connnecting rod big end, and piston cooling nozzle is arranged on cylinder body, is positioned at the bottom of cylinder sleeve.
Described liner backs has the Ni-P composite deposite that a layer thickness is 50 ~ 100 μ m.
Described piston is the cast aluminium piston, and firing chamber is ω shape, and piston head and outlet valve corresponding position are provided with one or two valve pits, and the piston throat location has crystal grain remelting or Ceramic Fibred Reinforcement layer, and the pin-and-hole front is ellipse, and is not with lining.
On described piston, the cross section of compression ring is trapezoidal, there is an annular inscribe platform at interior upper angle, and periphery is a bucket face structure, and surface is chromium-ceramic plated layer, downside has the thick metallic chromium layer of 50 μ m of flash, and the distance of bucket face peak and trapezoidal center line is H=1 ~ 2mm.
In described piston, the compression ring cross section is rectangle, the rectangle periphery angle beta=5 ~ 15o that tilts to the inside, and inner underside has a chamfering α=45 o.
Described oil ring is the Double step shape structure, and the frizing sword on step is divided into high step and time high step, and the poor L of two shoulder heights is 0.05 ~ 0.20mm.
The major part of described connecting rod is the swollen disconnected formula structure of angle.
Advantage of the present utility model: the utility model can bear the following burning pressure of explosion of 18MPa, the power of the maximum exportable 52kW of single cylinder, there is compact structure simultaneously, the characteristics such as power per liter is high, stroke is short, lightweight, anti-cavitation pitting ability is strong, engine oil consumption is low and antiwear property is strong, by configuration EFI high-pressure common-rail fuel system, can meet even state's V emission request of state's IV.
The accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present utility model.
Fig. 2 is assembling schematic diagram of the present utility model (except cylinder body and cylinder sleeve).
Fig. 3 is that piston partly cuts open schematic diagram.
Fig. 4 is compression ring cross sectional representation on piston.
Fig. 5 is compression ring cross sectional representation in piston.
Fig. 6 is the oil piston ring cross sectional representation.
Fig. 7 is Fig. 6 partial enlarged drawing.
Fig. 8 is piston-piston ring-cylinder liner-cylinder body combination schematic diagram.
Embodiment
Hereinafter by reference to the accompanying drawings the utility model is further illustrated:
As shown in Figure 1, Figure 2: diesel engine ram combined mechanism of the present utility model comprises on cylinder body 1, cylinder sleeve 2, piston 3, piston compression ring 5, oil piston ring 6, wrist pin 7, retaining ring for piston pin 8, connecting rod 9, connecting rob bushing 10, connecting rod on watt 11, connecting rod lower half bearing 12 and piston cooling nozzle 13 in compression ring 4, piston, piston 3 is arranged in wet cylinder liner 2, three annular grooves are distinguished fit on compression ring 4, middle compression ring 5 and oil ring 6 from top to bottom, and connecting rod 9 is assemblied in the pin-and-hole position of piston 3 by wrist pin 7 and retaining ring for piston pin 8; Connecting rod 9 microcephalies are pressed with a copper alloy bushing 10, in connecting rod 9 major parts, a slice connecting rod on watt 11 and connecting rod lower half bearing 12 are housed respectively, and piston cooling nozzle 13 is arranged on cylinder body 1, is positioned at the bottom of cylinder sleeve 2.
The major part of connecting rod 9 is the swollen disconnected formula structure of angle, and the major part diameter of bore is 40 ~ 50mm, and major part and microcephaly's endoporus centre distance are 80 ~ 100mm.
As Fig. 2, Fig. 3: as described in piston be the cast aluminium piston, firing chamber is ω shape, and piston head and outlet valve corresponding position are provided with one or two valve pit 3a, 3b, and piston throat location 3c adopts crystal grain remelting or Ceramic Fibred Reinforcement layer, pin-and-hole 3d front is ellipse, and is not with lining.
As Fig. 4: on described piston, the cross section of compression ring 4 is trapezoidal, there is an annular inscribe platform 4e at interior upper angle, and periphery 4a is a bucket face structure, and surface is chromium-ceramic plated layer, the thick crome metal of downside 4b flash one deck 50 μ m, the distance of bucket face peak 4c and trapezoidal center line is H=1 ~ 2mm.
As Fig. 5: in described piston, the compression ring cross section is rectangle, the rectangle periphery 5a angle beta=5 ~ 15o that tilts to the inside, and inner underside 5b has a chamfering α=45 o.
As Fig. 6, Fig. 7: described oil ring 6 is the Double step shape structure, and the frizing sword on step 6a is divided into high step 6a1 and time high step 6a2, and the poor L of two shoulder heights is 0.05 ~ 0.20mm.
Final piston-piston ring-cylinder liner-cylinder body combines as shown in Figure 8.
Only below that an embodiment of the present utility model is described in detail; but be to be understood that protection domain of the present utility model is not subject to the restriction of embodiment, the thinkable variation of any those skilled in the art is all within protection domain of the present utility model.
Claims (7)
1. a diesel engine ram combined mechanism, comprise cylinder body (1), cylinder sleeve (2), piston (3), compression ring on piston (4), compression ring in piston (5), oil piston ring (6), wrist pin (7), retaining ring for piston pin (8), connecting rod (9), connecting rob bushing (10), connecting rod on watt (11), connecting rod lower half bearing (12) and piston cooling nozzle (13), it is characterized in that: piston (3) is arranged in wet cylinder liner (2), three annular grooves are distinguished fit on compression ring (4) from top to bottom, middle compression ring (5) and oil ring (6), connecting rod (9) is assemblied in the pin-and-hole position of piston (3) by wrist pin (7) and retaining ring for piston pin (8), connecting rod (9) microcephaly is pressed with a copper alloy bushing (10), and a slice connecting rod on watt (11) and connecting rod lower half bearing (12) are housed in connecting rod (9) major part, and it is upper that piston cooling nozzle (13) is arranged on cylinder body (1), is positioned at the bottom of cylinder sleeve (2).
2. diesel engine ram combined mechanism according to claim 1, it is characterized in that: cylinder sleeve (2) outer surface has the Ni-P composite deposite that a layer thickness is 50 ~ 100 μ m.
3. diesel engine ram combined mechanism according to claim 1 and 2, it is characterized in that: piston is the cast aluminium piston, firing chamber is ω shape, piston head and outlet valve corresponding position are provided with one or two valve pits (3a, 3b), piston throat location (3c) has crystal grain remelting or Ceramic Fibred Reinforcement layer, pin-and-hole (3d) front is ellipse, and is not with lining.
4. diesel engine ram combined mechanism according to claim 1 and 2, it is characterized in that: the cross section of compression ring on piston (4) is trapezoidal, there is an annular inscribe platform (4e) at interior upper angle, periphery (4a) is bucket face structure, surface is chromium-ceramic plated layer, downside (4b) has the thick metallic chromium layer of 50 μ m of flash, and bucket face peak (4c) is H=1 ~ 2mm with the distance of trapezoidal center line.
5. diesel engine ram combined mechanism according to claim 1 and 2, it is characterized in that: in piston, the compression ring cross section is rectangle, rectangle periphery (5a) angle beta=5 ~ 15o that tilts to the inside, inner underside (5b) has a chamfering α=45 o.
6. diesel engine ram combined mechanism according to claim 1 and 2, it is characterized in that: described oil ring (6) is the Double step shape structure, frizing sword on step (6a) is divided into high step (6a1) and time high step (6a2), and the poor L of two shoulder heights is 0.05 ~ 0.20mm.
7. diesel engine ram combined mechanism according to claim 1 and 2, it is characterized in that: the major part of connecting rod (9) is the swollen disconnected formula structure of angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366765.8U CN203374363U (en) | 2013-06-25 | 2013-06-25 | Diesel engine power cylinder combination mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366765.8U CN203374363U (en) | 2013-06-25 | 2013-06-25 | Diesel engine power cylinder combination mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374363U true CN203374363U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320366765.8U Expired - Fee Related CN203374363U (en) | 2013-06-25 | 2013-06-25 | Diesel engine power cylinder combination mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374363U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508047A (en) * | 2015-11-27 | 2016-04-20 | 王琳 | Engine swing device |
| CN113464306A (en) * | 2021-08-20 | 2021-10-01 | 广西玉柴机器股份有限公司 | Method for reducing height of engine body and diesel engine |
-
2013
- 2013-06-25 CN CN201320366765.8U patent/CN203374363U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508047A (en) * | 2015-11-27 | 2016-04-20 | 王琳 | Engine swing device |
| CN113464306A (en) * | 2021-08-20 | 2021-10-01 | 广西玉柴机器股份有限公司 | Method for reducing height of engine body and diesel engine |
| CN113464306B (en) * | 2021-08-20 | 2024-05-24 | 广西玉柴机器股份有限公司 | Method for reducing height of diesel engine and diesel 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: 20140101 Termination date: 20160625 |