CN203189137U - Non-road diesel engine piston combustion chamber - Google Patents
Non-road diesel engine piston combustion chamber Download PDFInfo
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- CN203189137U CN203189137U CN 201320176211 CN201320176211U CN203189137U CN 203189137 U CN203189137 U CN 203189137U CN 201320176211 CN201320176211 CN 201320176211 CN 201320176211 U CN201320176211 U CN 201320176211U CN 203189137 U CN203189137 U CN 203189137U
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Abstract
The utility model provides a non-road diesel engine piston combustion chamber, which comprises a combustion chamber cavity, wherein a cylindrical segment is arranged on an opening which is arranged on the upper portion of the combustion chamber cavity, the diameter of the cylindrical segment is D1, the cylindrical segment downwardly transits to form a conical segment, the upper portion of the conical segment is big, the lower portion of the conical segment is small, an arc-shaped transmitted throat mouth is arranged on the tail end of the conical segment, the rotating diameter of the throat mouth is D3, a w-shaped rotating cavity of a combustion chamber is arranged on the lower portion of the throat mouth, the maximum diameter of the w-shaped rotating cavity is D2, the diameter D1 of the cylindrical segment=100-105mm, the height H3=1-4mm, an included angle Alpha of a cone element of the cylindrical segment and the upper end surface of a piston body=22-35 degrees, and the maximum diameter D2 of the w-shaped rotating cavity=71-75mm, D3=D2-0-2.5mm. The transited circular arc radius R1 of the cylindrical segment and the conical segment=1-2mm, the rotating diameter D3 on the throat mouth=68.5-75mm, the section of the throat mouth transits smoothly, and the transited radius R3=1-4mm. An inverted cone is arranged between an arc surface arranged on the lower portion of the W-shaped rotating cavity and a center boss.
Description
Technical field
The utility model relates to a kind of diesel engine used not on road piston combustion bowl, belongs to motor/field of combustion technology.
Background technique
At present, domestic diesel engine used not on road laws and regulations requirement is Tier2, and some other national diesel engine used not on road has been carried out the Tier3 rules, and the Tier3 Abgasgesetz is satisfied in the discharging of need upgrading of the diesel engine used not on road of outlet.For this reason, need a kind of diesel engine used not on road piston combustion bowl, effectively reduce the discharging of ash and smoke intensity, satisfying the non-road Abgasgesetz of Tier3 is the problem that solves at present, to the further optimization of combustion-chamber parameter, oil sprayer parameter, oil spout strategy and intake swirl, add that exhausted gas post-processing system can satisfy the Tier4 Abgasgesetz.
Summary of the invention
The purpose of this utility model is in order to solve the deficiencies in the prior art, by optimizing and mate rational oil sprayer parameter and oil spout strategy in the firing chamber, for adapting to a kind of diesel engine used not on road piston combustion bowl that stricter Abgasgesetz designs.
The technical solution of the utility model: diesel engine used not on road piston combustion bowl of the present utility model comprises the burning chamber, its burning chamber upper opening place is cylindrical section, the diameter of cylindrical section is D1, the downward transition of cylindrical section is conical section, conical section is up big and down small, and the end of conical section is the aditus laryngis of arc-shaped transition, the rotating diameter D3 of aditus laryngis, the aditus laryngis bottom is the ω shape rotary chamber of firing chamber, and the maximum diameter of ω shape rotary chamber is D2; Diameter D1=100 ~ the 105mm of cylindrical section, height H 3=1 ~ 4mm; Angle α=22～35 of the cone element of conical section and piston body upper-end surface °; Maximum dimension D 2=71 ~ the 75mm of ω shape rotary chamber, D3=D2-0 ~ 2.5mm.
Radius of arc R1=1～the 2mm of described cylindrical section and conical section transition.
Rotating diameter D3=68.5 ~ the 75mm of described aditus laryngis place, aditus laryngis cross section rounding off, knuckle radius R3=1 ~ 4mm.
Radius R 2=5 ~ the 10mm of the bottom arc surface of described ω shape rotary chamber is inverted cone surface between arc surface and the central boss, seamlessly transits between inverted cone surface and the arc surface.
The upper diameter D4=8 of the central boss of described firing chamber ~ 12mm, central boss and piston body upper-end surface apart from height H 1=5 ~ 10mm.
The ω shape rotary chamber of described firing chamber bottom and piston body upper-end surface apart from height H 2=16 ~ 28mm.
Described inverted cone surface both sides cone element and piston body center line angle β=52～62 °.
The utility model technique effect: it is on 130 millimeters the diesel engine, can effectively reduce the discharging of ash and smoke intensity that the utility model will be applied to cylinder bore first with the steel pistons of firing chamber, and can satisfy the non-road Abgasgesetz of Tier3 is the problem that solves at present.By the further optimization of combustion-chamber parameter, oil sprayer parameter, oil spout strategy and intake swirl, add exhausted gas post-processing system and can satisfy the Tier4 Abgasgesetz.
Description of drawings
Fig. 1 is sectional structure schematic representation of the present utility model.
Embodiment
Below in conjunction with example the utility model is further described.
As shown in Figure 1, a kind of non-road piston combustion bowl of the present utility model, its burning chamber upper opening place is cylindrical section a, the diameter of cylindrical section a is D1, and the downward transition of cylindrical section a is conical section b, and conical section b is up big and down small, the end of conical section b is the aditus laryngis c of arc-shaped transition, the rotating diameter D3 of aditus laryngis c, aditus laryngis c bottom is the ω shape rotary chamber d of firing chamber, the maximum diameter of ω shape rotary chamber d is D2; Diameter D1=100 ~ 105mm of cylindrical section a, height H 3=1 ~ 4mm; Angle α=22～35 of the cone element of conical section b and piston body upper-end surface °; Maximum dimension D 2=71 ~ 75mm of ω shape rotary chamber d, D3=D2-0 ~ 2.5mm.
Radius of arc R1≤the 2mm of described cylindrical section a and conical section b transition.
The described aditus laryngis c rotating diameter D3=68.5 ~ 75mm of place, aditus laryngis cross section rounding off, knuckle radius R3=1 ~ 4mm.
Radius R 2=5 ~ 10mm of the bottom arc surface d1 of described ω shape rotary chamber d is inverted cone surface d3 between arc surface d1 and the central boss d2, seamlessly transits between inverted cone surface d3 and the arc surface d1.Inverted cone surface d3 both sides cone element and piston body center line angle β=52～62 °.
Upper diameter D4=8 ~ 12mm of described firing chamber central boss d2, central boss d2 and piston body upper-end surface apart from height H 1=5 ~ 10mm.
The ω shape rotary chamber d of described firing chamber bottom and piston body upper-end surface apart from height H 2=16 ~ 28mm.
Center, the utility model firing chamber overlaps with the piston center.
Implementation result: critical size D1, the D2 of combustion-chamber shape, D3, D4, R1, R2, R3, H1, H2, H3, α, β etc. are by design optimization and complete machine performance development, can improve power character and the Economy of diesel engine, reduce ash and discharging, to satisfy stricter non-road Abgasgesetz.
Top, combustion chamber openings of the present utility model place is cylindrical mouth, and descending transition slightly is cone ports, and cone ports is up big and down small; Increase D1 as far as possible, suitably reduce D2, reduce R3; Mate rational oil sprayer parameter and oil spout strategy simultaneously, guarantee low ash and low smoke emission.
Claims (7)
1. diesel engine used not on road piston combustion bowl, comprise the burning chamber, it is characterized in that: burning chamber upper opening place is cylindrical section (a), the diameter of cylindrical section (a) is D1, and cylindrical section (a) transition downwards is conical section (b), and (b) is up big and down small for conical section, the end of conical section (b) is the aditus laryngis (c) of arc-shaped transition, the rotating diameter D3 of aditus laryngis (c), aditus laryngis (c) bottom is the ω shape rotary chamber (d) of firing chamber, the maximum diameter of ω shape rotary chamber (d) is D2; Diameter D1=100 ~ the 105mm of cylindrical section (a), height H 3=1 ~ 4mm; The cone element of conical section (b) and angle α=22～35 of piston body upper-end surface °; Maximum dimension D 2=71 ~ the 75mm of ω shape rotary chamber (d), D3=D2-0 ~ 2.5mm.
2. diesel engine used not on road piston combustion bowl according to claim 1 is characterized in that: the radius of arc R1=1～2mm of cylindrical section (a) and conical section (b) transition.
3. diesel engine used not on road piston combustion bowl according to claim 1 and 2, it is characterized in that: aditus laryngis (c) is located rotating diameter D3=68.5 ~ 75mm, aditus laryngis cross section rounding off, knuckle radius R3=1 ~ 4mm.
4. diesel engine used not on road piston combustion bowl according to claim 1 and 2, it is characterized in that: the radius R 2=5 ~ 10mm of the bottom arc surface (d1) of ω shape rotary chamber (d), be inverted cone surface (d3) between arc surface (d1) and the central boss (d2), seamlessly transit between inverted cone surface (d3) and the arc surface (d1).
5. diesel engine used not on road piston combustion bowl according to claim 4 is characterized in that: the upper diameter D4=8 ~ 12mm of firing chamber central boss (d2), central boss (d2) and piston body upper-end surface apart from height H 1=5 ~ 10mm.
6. diesel engine used not on road piston combustion bowl according to claim 1 and 2 is characterized in that: ω shape rotary chamber (d) bottom of firing chamber and piston body upper-end surface apart from height H 2=16 ~ 28mm.
7. diesel engine used not on road piston combustion bowl according to claim 4 is characterized in that: inverted cone surface (d3) both sides cone element and piston body center line angle β=and 52～62 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320176211 CN203189137U (en) | 2013-04-10 | 2013-04-10 | Non-road diesel engine piston combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320176211 CN203189137U (en) | 2013-04-10 | 2013-04-10 | Non-road diesel engine piston combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189137U true CN203189137U (en) | 2013-09-11 |
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ID=49106002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320176211 Expired - Fee Related CN203189137U (en) | 2013-04-10 | 2013-04-10 | Non-road diesel engine piston combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595007A (en) * | 2015-01-16 | 2015-05-06 | 东风商用车有限公司 | Straight-wall double-swirl combustion chamber of diesel engine |
-
2013
- 2013-04-10 CN CN 201320176211 patent/CN203189137U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595007A (en) * | 2015-01-16 | 2015-05-06 | 东风商用车有限公司 | Straight-wall double-swirl combustion chamber of 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: 20130911 Termination date: 20160410 |