EP0222402B1 - Kühlluftführung in einer luftgekühlten Brennkraftmaschine - Google Patents
Kühlluftführung in einer luftgekühlten Brennkraftmaschine Download PDFInfo
- Publication number
- EP0222402B1 EP0222402B1 EP86115779A EP86115779A EP0222402B1 EP 0222402 B1 EP0222402 B1 EP 0222402B1 EP 86115779 A EP86115779 A EP 86115779A EP 86115779 A EP86115779 A EP 86115779A EP 0222402 B1 EP0222402 B1 EP 0222402B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion engine
- internal combustion
- cylinder
- row
- fins
- Prior art date
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 64
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 230000002411 adverse Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/06—Guiding or ducting air to, or from, ducted fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/20—Multi-cylinder engines with cylinders all in one line
Definitions
- the invention relates to an air-cooled internal combustion engine with a cooling air duct according to the preamble of claim 1.
- An air-cooled internal combustion engine of this type is known from DE-C-11 35 711.
- the fan arranged to generate the cooling air flow is fastened lying next to the first cylinder in such a way that the incoming cooling air flow enters the cooling air duct next to the first cylinder.
- the cooling fins of the cylinder heads are arranged transversely to the longitudinal center axis of the row of cylinders, since the cooling air - also in the region of the first cylinder - flows through the row of cylinders essentially transversely to the longitudinal center axis.
- the lateral offset of the blower to the cylinder head row (distance from the longitudinal center axis - blower to the longitudinal center axis - cylinder head row) essentially determines the installation width of an air-cooled engine. This offset cannot be reduced arbitrarily, since in particular the transverse cooling fins of the first cylinder adjacent to the fan block the fan outlet and would thus reduce the efficiency.
- the invention has for its object to design the cooling air duct of an air-cooled internal combustion engine such that the lateral offset of the fan to the longitudinal center axis of the row of cylinders can be kept as low as possible.
- this object is achieved by the characterizing features of the first claim. Due to the cooling fins oriented in the overlap area of the fan and the row of cylinders, approximately in the flow direction of the incoming cooling air flow, a hindrance to the incoming cooling air is largely avoided.
- the cooling fins arranged according to the invention deflect the cooling air from its inflow direction in the transverse direction within the first cylinder head.
- the cooling fins are preferably aligned approximately parallel to the longitudinal center axis of the row of cylinders.
- the section shown in FIG. 1 shows a plurality of cylinders 1, 2, 3, which are arranged in a row and carry a block cylinder head.
- the block cylinder head is fastened to this by means of fastening screws which are screwed into the cylinder blocks by cylinder head pipes 21.
- a blower 4 in the longitudinal direction of the cylinder bank 5 in the region of the first cylinder 1, which blower is designed as an axial blower in the exemplary embodiment shown.
- the fan 4 has a housing jacket 17, in which a stator 17a is arranged, which holds the hub of the impeller 17b centrally.
- the fan 4 generates a cooling air flow K which is directed essentially parallel to the longitudinal central axis 14 of the cylinder bank 5.
- a cooling air guide 7 adjoins the fan 4 arranged in front of the cylinder bank 5 and redirects the cooling air flow K entering in the longitudinal direction of the cylinder bank 5 such that the cooling air essentially flows through the cylinder bank and exits in the direction of arrow 6.
- the cooling fins 20 of the cylinder heads 1 a, 2a, 3a are arranged transversely to the row of cylinders 5 in accordance with the flow in the direction of the arrow 6 and lie essentially at right angles to the longitudinal central axis 14.
- the fan 4 In order to reduce the installation length and the installation width of an air-cooled engine, it is now provided to arrange the fan 4 in such a way that part of the cooling air flow K strikes the first cylinder head 1 a in the longitudinal direction of the cylinder bank 5.
- the blower 4 is arranged in such a way that its longitudinal central axis 15 lies parallel to the longitudinal central axis 14 of the cylinder bank 5, an outer surface line 16 of the housing shell 17 lying in the longitudinal center plane 14a (FIG. 2) of the cylinder bank 5.
- the cross section 12 of the axial fan 4 overlaps - seen in the direction of arrow A - partially with the first cylinder 1 or its cylinder head 1a (FIG. 2).
- the cooling fins 8, 9, 10 of the cylinder head 1 a lying in the overlap region of the blower 4 with the first cylinder 1 are aligned according to the invention approximately in the flow direction of the incoming cooling air flow K. They are preferably parallel to the central longitudinal axis 14 of the row of cylinders 5. It may also be expedient to arrange the cooling fins at an angle to the central longitudinal axis 14, this angle being an obtuse angle to the blower 14 or an acute angle.
- the cooling fin 8 directly adjacent to the cooling air guide 7 is longest, while the cooling fin 9, 10 lying between the cooling fin 8 and the longitudinal central axis 14 is designed with decreasing length toward the longitudinal central axis 14.
- the cooling fins 8, 9, 10 preferably extend up to approximately a straight line 19 which forms an angle 18 which is open to the blower 4 with the longitudinal center axis 14.
- This angle can be an acute or an obtuse angle, with an obtuse angle being preferred.
- the cooling fins 8, 9, 10 in the exemplary embodiment according to FIG. 1 are distributed over a quarter of the area of the cylinder head 1 a and aligned in the direction of flow of the incoming cooling air K parallel to the longitudinal center axis 14, while the remaining cooling fins 20 are distributed over the remaining area of the Cylinder head 1a are distributed and lie transversely to the cooling air flow K (at right angles to the longitudinal central axis 14).
- a cylinder head row is shown as a preferred embodiment, in which only the first cylinder head 1a has some cooling fins 8, 9, 10 aligned in the flow direction of the incoming cooling air. It may be advantageous to also provide the following cylinder heads with one or more cooling fins, which are aligned in the longitudinal direction of the row of cylinder heads.
- the cooling fins 8, 9, 10 are arranged separately from the cooling fins 20 lying transversely to the longitudinal center axis 14. This separation can be provided in such a way that a type of channel is formed between the ribs oriented in the longitudinal direction and the ribs oriented in the transverse direction.
- the cooling fins 8.1, 9.1, 10.1 aligned in the longitudinal direction of the cylinder row in such a way that they each merge into a transverse cooling fin 20.1 (FIGS. 3 and 4).
- the transitions are designed with large deflection radii R, which contribute to low-resistance air deflection.
- 4 shows a design in which the transition is formed from a straight fin sections 30, which, with appropriately selected transition radii, lie on the cooling fin 8.1 or 9.1 or 10.1 lying parallel to the longitudinal central axis 14 and the associated one lying at right angles to the longitudinal central axis 14 Cooling fin 20.1 connects.
- the cooling fins 8.1, 9.1, 10.1 and 20.1 are shorter in accordance with the longitudinal extent of the fin sections 30.
- the rib sections 30 lie or at an angle of approximately 45 ° to the longitudinal central axis.
- the foremost, transversely positioned cooling fin 11 of the cylinder head 1 a, which is adjacent to the blower 4, is L-shaped in plan view, its smaller leg 11 a lying in the plane 14 a (FIG. 2) of the longitudinal central axis 14 of the cylinder bank 5.
- Both the transverse cooling fins 20 and the longitudinally oriented cooling fins 8, 9, 10 and 11 a are designed as supporting elements for supporting the combustion chamber floor 22 against the valve or / and camshaft trough 13.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86115779T ATE50828T1 (de) | 1985-11-15 | 1986-11-13 | Kuehlluftfuehrung in einer luftgekuehlten brennkraftmaschine. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3540489 | 1985-11-15 | ||
DE19853540489 DE3540489A1 (de) | 1985-11-15 | 1985-11-15 | Kuehlluftfuehrung in einer luftgekuehlten brennkraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0222402A2 EP0222402A2 (de) | 1987-05-20 |
EP0222402A3 EP0222402A3 (en) | 1988-07-27 |
EP0222402B1 true EP0222402B1 (de) | 1990-03-07 |
Family
ID=6286031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86115779A Expired - Lifetime EP0222402B1 (de) | 1985-11-15 | 1986-11-13 | Kühlluftführung in einer luftgekühlten Brennkraftmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US4747374A (es) |
EP (1) | EP0222402B1 (es) |
JP (1) | JPS62135608A (es) |
AT (1) | ATE50828T1 (es) |
DE (2) | DE3540489A1 (es) |
ES (1) | ES2014223B3 (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7179402B2 (en) * | 2004-02-02 | 2007-02-20 | General Electric Company | Phosphors containing phosphate and/or borate of metals of group IIIA, group IVA, and lanthanide series, and light sources incorporating the same |
DE102007032973B4 (de) * | 2007-07-16 | 2009-10-08 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Y-förmige Kühlrippenanordnung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA504329A (en) * | 1954-07-13 | Sonderegger Konrad | Oil-cooler arrangement in air-cooled internal combustion engines | |
NL11851C (es) * | 1900-01-01 | |||
US1683602A (en) * | 1921-04-11 | 1928-09-11 | Ind Res Corp | Engine-cooling system |
DE585221C (de) * | 1931-02-19 | 1933-09-30 | Ludwig Baersch Dipl Ing | Luftgekuehlte Brennkraftmaschine |
US2289959A (en) * | 1940-07-17 | 1942-07-14 | Fairchild Engine & Airplane | Cooling system for engines |
FR917119A (fr) * | 1944-11-13 | 1946-12-26 | Schweizerische Lokomotiv | Moteur à combustion alimenté par compresseur et refroidi par l'air |
DE880823C (de) * | 1949-11-24 | 1953-06-25 | Schweizerische Lokomotiv | Luftgekuehlte Brennkraftmaschine |
JPS5311248A (en) * | 1976-07-19 | 1978-02-01 | Kawasaki Heavy Ind Ltd | Engine cover |
DE3540488A1 (de) * | 1985-11-15 | 1987-05-21 | Kloeckner Humboldt Deutz Ag | Kuehlluftfuehrung in einer luftgekuehlten brennkraftmaschine |
-
1985
- 1985-11-15 DE DE19853540489 patent/DE3540489A1/de not_active Withdrawn
-
1986
- 1986-11-12 US US06/930,140 patent/US4747374A/en not_active Expired - Fee Related
- 1986-11-13 AT AT86115779T patent/ATE50828T1/de not_active IP Right Cessation
- 1986-11-13 EP EP86115779A patent/EP0222402B1/de not_active Expired - Lifetime
- 1986-11-13 JP JP61270850A patent/JPS62135608A/ja active Pending
- 1986-11-13 DE DE8686115779T patent/DE3669345D1/de not_active Expired - Fee Related
- 1986-11-13 ES ES86115779T patent/ES2014223B3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4747374A (en) | 1988-05-31 |
ATE50828T1 (de) | 1990-03-15 |
EP0222402A3 (en) | 1988-07-27 |
DE3540489A1 (de) | 1987-05-21 |
DE3669345D1 (de) | 1990-04-12 |
EP0222402A2 (de) | 1987-05-20 |
JPS62135608A (ja) | 1987-06-18 |
ES2014223B3 (es) | 1990-07-01 |
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