GB1480603A - Centrifugal advance device for the ignition distributor of an internal combustion engine - Google Patents
Centrifugal advance device for the ignition distributor of an internal combustion engineInfo
- Publication number
- GB1480603A GB1480603A GB4816874A GB4816874A GB1480603A GB 1480603 A GB1480603 A GB 1480603A GB 4816874 A GB4816874 A GB 4816874A GB 4816874 A GB4816874 A GB 4816874A GB 1480603 A GB1480603 A GB 1480603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- spring
- pin
- intermediate plate
- ignition timing
- 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
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
- F02P5/06—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on engine speed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
1480603 Centrifugal shaft couplings DUCELLIER ET CO 7 Nov 1974 [28 Nov 1973] 48168/74 Heading F2U A centrifugal ignition timing coupling has an advance/speed curve ABC in which at lower engine speeds the ignition timing is advanced as shown at A while at higher engine speeds the ignition timing is retarded as at C. The construction consists of a pair of weights 5 movable about pivots 3, 4 on a plate 2 rigid with the drive shaft 1, a first spring 15 being arranged between a pin 16 on the weight shown and a lug 17 on an intermediate plate 6 and a second spring 11 being arranged between a lug 13 on the intermediate plate and a hole 12 in a plate 9 carrying the cam 10 and rotatable about the drive shaft. At lower speeds the weight 5 swings anticlockwise to rotate the intermediate plate 6 clockwise through an angle (α), Fig. 2 (not shown), by means of a slot in the weight coacting with a pin 7 on the intermediate plate, the tension of the second spring 11 causing the plate 2 to advance clockwise by the amount (α) until an adjustable abutment 20 on the pin 16 engages a ramp 21a in a cut-out 21 in the plate 9. The ignition timing then no longer varies as shown at B until the speed overcomes the forces of the springs 11 and 15 when further anticlockwise swing of the weight causes the intermediate plate 6 to move clockwise through a further angle of (#), Fig. 3 (not shown), by means of the pin 7 and causes the plate 9 to move anticlockwise through an angle (#) by means of the abutment 20 running outwardly along the ramp 21a until the action is stopped by an adjustable abutment 22 on the pin 3 engaging a face 23b on the intermediate plate. The first spring 15 operates in conjunction with an adjustable abutment 18 while the second spring 11 operates in conjunction with an adjustable abutment 14. If desired, a further spring may be employed to obtain two slopes A1 and A2 in the curve at low speeds.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7342339A FR2252767A5 (en) | 1973-11-28 | 1973-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1480603A true GB1480603A (en) | 1977-07-20 |
Family
ID=9128379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4816874A Expired GB1480603A (en) | 1973-11-28 | 1974-11-07 | Centrifugal advance device for the ignition distributor of an internal combustion engine |
Country Status (6)
| Country | Link |
|---|---|
| BR (1) | BR7409858A (en) |
| DE (1) | DE2454655A1 (en) |
| ES (1) | ES432177A1 (en) |
| FR (1) | FR2252767A5 (en) |
| GB (1) | GB1480603A (en) |
| IT (1) | IT1025359B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4577592A (en) * | 1984-06-27 | 1986-03-25 | Bosch Henery G K | Self adjusting camshaft gear for internal combustion engines |
-
1973
- 1973-11-28 FR FR7342339A patent/FR2252767A5/fr not_active Expired
-
1974
- 1974-10-31 IT IT2900674A patent/IT1025359B/en active
- 1974-11-07 GB GB4816874A patent/GB1480603A/en not_active Expired
- 1974-11-18 DE DE19742454655 patent/DE2454655A1/en not_active Withdrawn
- 1974-11-22 ES ES432177A patent/ES432177A1/en not_active Expired
- 1974-11-25 BR BR985874A patent/BR7409858A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES432177A1 (en) | 1976-09-16 |
| BR7409858A (en) | 1976-05-25 |
| IT1025359B (en) | 1978-08-10 |
| DE2454655A1 (en) | 1975-06-19 |
| FR2252767A5 (en) | 1975-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |