GB1407207A - High-speed four-stroke spark-ignition petrol engines - Google Patents
High-speed four-stroke spark-ignition petrol enginesInfo
- Publication number
- GB1407207A GB1407207A GB4523871A GB4523871A GB1407207A GB 1407207 A GB1407207 A GB 1407207A GB 4523871 A GB4523871 A GB 4523871A GB 4523871 A GB4523871 A GB 4523871A GB 1407207 A GB1407207 A GB 1407207A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exhaust
- valves
- inlet
- valve
- inlet valve
- 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
- F02B1/00—Engines characterised by fuel-air mixture compression
-
- 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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- 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
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- 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
- F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
- F02B2700/02—Four stroke engines
- F02B2700/021—Four stroke engines with measures for removing exhaust gases from the cylinder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
1407207 Four-stroke engines TERRYTUNE DEVELOPMENTS Ltd 28 Sept 1972 [28 Sept 1971] 45238/71 Heading F1B In a spark-ignition engine having a single inlet valve 5 and a single exhaust valve 6 for each cylinder, the area of the exhaust valve of each cylinder is at least 7% greater than that of inlet valve. An engine having exhaust valves which are smaller than the inlet valves may be modified by the provision of a replacement cylinder head in which the exhaust valves are of a larger diameter than the inlet valves which are equal in diameter to those in the original head. The exhaust valve area may be from 15 to 65% greater than the inlet valve area. The engine compression ratio may be in the range 7:1 to 11:1 and the compression ratio may be reduced by machining the piston crown. A larger carburetter may be used with the replacement cylinder head. The Specification discloses numerical examples of exhaust and inlet valve diameters in original and replacement cylinder heads.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE792999D BE792999A (en) | 1971-09-28 | ||
GB4523871A GB1407207A (en) | 1971-09-28 | 1971-09-28 | High-speed four-stroke spark-ignition petrol engines |
CA152,196A CA971482A (en) | 1971-09-28 | 1972-09-20 | Internal combustion engines |
ES407273A ES407273A1 (en) | 1971-09-28 | 1972-09-26 | High-speed four-stroke spark-ignition petrol engines |
AU47151/72A AU458634B2 (en) | 1971-09-28 | 1972-09-27 | Internal combustion engines |
IT7270047A IT975099B (en) | 1971-09-28 | 1972-09-27 | INTERNAL COMBUSTION ENGINE |
FR7234236A FR2155403A5 (en) | 1971-09-28 | 1972-09-27 | |
DE2247625A DE2247625C3 (en) | 1971-09-28 | 1972-09-28 | External ignition, multi-cylinder, four-stroke gasoline internal combustion engine |
JP9761072A JPS5632454B2 (en) | 1971-09-28 | 1972-09-28 | |
US05/502,196 US4114585A (en) | 1971-09-28 | 1974-08-30 | Internal-combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4523871A GB1407207A (en) | 1971-09-28 | 1971-09-28 | High-speed four-stroke spark-ignition petrol engines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1407207A true GB1407207A (en) | 1975-09-24 |
Family
ID=10436433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4523871A Expired GB1407207A (en) | 1971-09-28 | 1971-09-28 | High-speed four-stroke spark-ignition petrol engines |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5632454B2 (en) |
AU (1) | AU458634B2 (en) |
CA (1) | CA971482A (en) |
DE (1) | DE2247625C3 (en) |
ES (1) | ES407273A1 (en) |
GB (1) | GB1407207A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51130861U (en) * | 1975-04-07 | 1976-10-21 | ||
JPS52152559A (en) * | 1976-06-07 | 1977-12-19 | Murata Machinery Ltd | Heald unit for dobby machine |
JPS5378266U (en) * | 1976-12-01 | 1978-06-29 | ||
JPS59175753A (en) * | 1983-03-25 | 1984-10-04 | Toshiba Corp | Semiconductor device and lead frame |
-
1971
- 1971-09-28 GB GB4523871A patent/GB1407207A/en not_active Expired
-
1972
- 1972-09-20 CA CA152,196A patent/CA971482A/en not_active Expired
- 1972-09-26 ES ES407273A patent/ES407273A1/en not_active Expired
- 1972-09-27 AU AU47151/72A patent/AU458634B2/en not_active Expired
- 1972-09-28 JP JP9761072A patent/JPS5632454B2/ja not_active Expired
- 1972-09-28 DE DE2247625A patent/DE2247625C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA971482A (en) | 1975-07-22 |
AU458634B2 (en) | 1975-03-06 |
JPS5632454B2 (en) | 1981-07-28 |
ES407273A1 (en) | 1976-06-16 |
DE2247625B2 (en) | 1974-02-28 |
AU4715172A (en) | 1974-04-04 |
DE2247625A1 (en) | 1973-04-05 |
JPS4841112A (en) | 1973-06-16 |
DE2247625C3 (en) | 1974-10-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |