JPS57119145A - Crankcase for engine - Google Patents
Crankcase for engineInfo
- Publication number
- JPS57119145A JPS57119145A JP405481A JP405481A JPS57119145A JP S57119145 A JPS57119145 A JP S57119145A JP 405481 A JP405481 A JP 405481A JP 405481 A JP405481 A JP 405481A JP S57119145 A JPS57119145 A JP S57119145A
- Authority
- JP
- Japan
- Prior art keywords
- crankcase
- portions
- positioning
- axis
- engine
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
-
- 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
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
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)
Abstract
PURPOSE:To facilitate the positioning of a crankcase made of synthetic resin and split into a right and a left portions as to the axis of the cylinder or into an upper and a lower portions as to the axis of a crankshaft, by providing positioning protrusions on one of the portions of the crankcase and positioning holes in the other. CONSTITUTION:The crankcase 3 of an engine 1 is split into a right and a left portions as to the axis of the cylinder 3 and made of molded synthetic resin such as fiberglass-reinforced polybutylene terephthalate, the acoustic transmissivity, weight and thermal conductivity of which are low. The upper and lower parts of the contact surfaces CS of the right and left portions 11, 12 of the crankcase 3 are provided with positioning protrusions 25 and positioning holes 27. The positioning protrusions 25 are provided with tapped holes for clamping both the portions 11, 12 of the crankcase 3 on each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP405481A JPS57119145A (en) | 1981-01-14 | 1981-01-14 | Crankcase for engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP405481A JPS57119145A (en) | 1981-01-14 | 1981-01-14 | Crankcase for engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57119145A true JPS57119145A (en) | 1982-07-24 |
Family
ID=11574163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP405481A Pending JPS57119145A (en) | 1981-01-14 | 1981-01-14 | Crankcase for engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57119145A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2569368A1 (en) * | 1984-08-21 | 1986-02-28 | Stihl Andreas | PORTABLE WORKING APPARATUS SUCH AS A MOTOR SAW |
JPS6310248U (en) * | 1986-07-09 | 1988-01-23 |
-
1981
- 1981-01-14 JP JP405481A patent/JPS57119145A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2569368A1 (en) * | 1984-08-21 | 1986-02-28 | Stihl Andreas | PORTABLE WORKING APPARATUS SUCH AS A MOTOR SAW |
JPS6310248U (en) * | 1986-07-09 | 1988-01-23 |
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