GB813629A - Improvements in or relating to diesel engines - Google Patents
Improvements in or relating to diesel enginesInfo
- Publication number
- GB813629A GB813629A GB3351454A GB3351454A GB813629A GB 813629 A GB813629 A GB 813629A GB 3351454 A GB3351454 A GB 3351454A GB 3351454 A GB3351454 A GB 3351454A GB 813629 A GB813629 A GB 813629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- recess
- projection
- piston
- disc
- projects
- 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
Links
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000007937 lozenge Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Classifications
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
-
- 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
- F02B2720/00—Engines with liquid fuel
- F02B2720/22—Four stroke engines
- F02B2720/226—Four stroke engines with measures for improving combustion
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
813,629. Combustion chambers. BUTTERWORTH, A. J. Feb. 20, 1956 [Nov. 19, 1954], No. 33514/54. Class 7(3) A projection on the head of a piston is formed with a combustion recess 12, Figs. 3 and 4, therein into which lead open-topped grooves 13 formed in the wall of the projection. In Figs. 3 and 4 the projection 13 is hemispherical and projects into a corresponding recess in the cylinder head at top dead centre, the displaced air forced through the grooves 13 setting up a strong swirl in the recess 12. Shallow depressions 14, 15 are formed in the projection 13 opposite the inlet and exhaust valves 2, 3, Fig. 2, the inlet passage 9 being inclined at its end to cause the entering air to rotate in the cylinder. The piston 4 may be formed of aluminium and the bottom of the recess 12 is preferably formed by a cast-in disc 16, Fig. 4, of heat resisting steel 16 insulated from the piston by insulating material such as mica 17. In a modification the disc 16 is held in position by a circlip expanded by a grub screw and in Fig. 6 the disc 16 is screwed in position and recessed to leave an air space thereunder, the material 17 being omitted. In Fig. 8 the recess 12 is provided in a lozenge shaped projection 20 on the piston crown which projects into a corresponding recess in the cylinder head. The inlet valve may be fixed to a rocker arm as described in Specification 710,073.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB813629A true GB813629A (en) | 1959-05-21 |
Family
ID=1743491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3351454A Expired GB813629A (en) | 1954-11-19 | Improvements in or relating to diesel engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB813629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2419395A1 (en) * | 1978-03-08 | 1979-10-05 | Bosch Gmbh Robert | PISTON INTERNAL COMBUSTION ENGINE WITH CIRCULAR CYLINDRICAL COMBUSTION CHAMBER |
-
1954
- 1954-11-19 GB GB3351454A patent/GB813629A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2419395A1 (en) * | 1978-03-08 | 1979-10-05 | Bosch Gmbh Robert | PISTON INTERNAL COMBUSTION ENGINE WITH CIRCULAR CYLINDRICAL COMBUSTION CHAMBER |
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