GB139473A - Improvements in internal combustion engines - Google Patents
Improvements in internal combustion enginesInfo
- Publication number
- GB139473A GB139473A GB5415/20A GB541520A GB139473A GB 139473 A GB139473 A GB 139473A GB 5415/20 A GB5415/20 A GB 5415/20A GB 541520 A GB541520 A GB 541520A GB 139473 A GB139473 A GB 139473A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- crank
- scavenging
- combustible mixture
- crank chamber
- 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
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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
- F02B33/26—Four-stroke engines characterised by having crankcase pumps
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Valve Device For Special Equipments (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
139,473. PrÚtot, M. Feb. 6, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Regulating.-Fig. 1 shows a two-stroke-cycle engine having an exhaust valve in the cylinder head and a terminal port L through which scavenging-air is delivered, by a fan or other apparatus, in advance of combustible mixture compressed in the crank chamber and transferred to the combustion space through a non-return valve M. Alternatively, the crank chamber may compress the scavenging-air, combustible mixture being admitted through the port L. According to a modified construction, the air-inlet port L is located above the inlet port for the combustible mixture. The Specification states that scavenging-air at atmospheric pressure may be induced by the escape of the exhaust gases. The fourstroke-cycle engine shown in Fig. 3 may compress in the crank casing air which is transferred to the cylinder through a passage M<1> for scavenging purposes and to supplement the normal charge. Alternatively, a scavenging charge may be dispensed with, air or combustible mixture being transferred from the crank chamber to the combustion space during the suction strokes to supplement a charge of combustible mixture or air drawn in through a valve S in the cylinder head. Liquid fuel may be injected either into the cylinder or into the crank chamber. Supplementary charges may be compressed in the crank chamber for a pair of working cylinders. In either two- or four-stroke-cycle. engines, the volumes of the crank chambers may be varied, to compensate for differences in the pressure of the atmosphere at various altitudes, by altering the sizes of the crank-disks, the clearance spaces in the pistons, or the dimensions of the connecting-rods. The crank chambers may be placed in communication with supplementary chambers to increase their volume. The cylinder and pump ports may be controlled by valves.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR139473X | 1919-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB139473A true GB139473A (en) | 1921-05-05 |
Family
ID=8874473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5415/20A Expired GB139473A (en) | 1919-02-06 | 1920-02-23 | Improvements in internal combustion engines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB139473A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012105216A1 (en) * | 2011-01-31 | 2012-08-09 | Hitachi Koki Co., Ltd. | 2-cycle engine and engine-powered working machine having the same |
BE1023256B1 (en) * | 2015-10-30 | 2017-01-12 | invEngin BVBA | Cylinder unit and combustion engine with such cylinder unit |
-
1920
- 1920-02-23 GB GB5415/20A patent/GB139473A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012105216A1 (en) * | 2011-01-31 | 2012-08-09 | Hitachi Koki Co., Ltd. | 2-cycle engine and engine-powered working machine having the same |
CN103380272A (en) * | 2011-01-31 | 2013-10-30 | 日立工机株式会社 | 2-cycle engine and engine-powered working machine having the same |
BE1023256B1 (en) * | 2015-10-30 | 2017-01-12 | invEngin BVBA | Cylinder unit and combustion engine with such cylinder unit |
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