GB1485664A - Method and apparatus for adjusting the valve tappet clearances in internal combustion engines - Google Patents
Method and apparatus for adjusting the valve tappet clearances in internal combustion enginesInfo
- Publication number
- GB1485664A GB1485664A GB1200475A GB1200475A GB1485664A GB 1485664 A GB1485664 A GB 1485664A GB 1200475 A GB1200475 A GB 1200475A GB 1200475 A GB1200475 A GB 1200475A GB 1485664 A GB1485664 A GB 1485664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- tappet
- gap
- adjusting
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/24—Safety means or accessories, not provided for in preceding sub- groups of this group
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
1485664 Adjusting tappet clearances in I.C. engines FORD MOTOR CO Ltd 21 March 1975 [11 April 1974] 12004/75 Heading G1M A method of adjusting the tappet clearance of a valve 2 includes connecting a compressed air supply 7 to a spark-plug hole 3 of a cylinder 1 to build up pressure therein, and starting with the valve 2 closed, turning a valve tappet adjuster screw 5 by means of a tool handle 17 until the pressure in the chamber 1 has fallen by a pre-determined amount. As the handle 17 is operated, the load on a pressure sensor 20 causes it to supply an electric signal to close a valve 15 and the lower side of a piston 12. When the pressure drops to the required value due to the valve being opened further the pressure on the upper side of the differential piston 12 is correspondingly reduced so that the piston moves upwardly against spring-bias to close a switch 16 and de-energize an electromagnetic clutch 19 in the torque drive thus automatically halting the screw adjustment. The tappet clearance or gap may then be set by turning the adjuster back through a specific angle. The gap may also be set by using a feeler gauge 23 slightly greater in thickness than the required gap, the thickness being such that when the predetermined pressure drop occurs the valve is slightly open and the tappet is adjusted to a slightly larger gap which closes a little when the valve re-seats.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742417748 DE2417748C2 (en) | 1974-04-11 | 1974-04-11 | Device for adjusting the valve clearance kl internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1485664A true GB1485664A (en) | 1977-09-14 |
Family
ID=5912789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1200475A Expired GB1485664A (en) | 1974-04-11 | 1975-03-21 | Method and apparatus for adjusting the valve tappet clearances in internal combustion engines |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2417748C2 (en) |
| GB (1) | GB1485664A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2441054A1 (en) * | 1978-11-07 | 1980-06-06 | Renault | Automatic tappet adjustment for IC engines - is based on use of two electric motors and three position sensors |
| JPS5838604B2 (en) * | 1979-01-24 | 1983-08-24 | トヨタ自動車株式会社 | Valve clearance adjustment and valve timing inspection method for internal combustion engines |
-
1974
- 1974-04-11 DE DE19742417748 patent/DE2417748C2/en not_active Expired
-
1975
- 1975-03-21 GB GB1200475A patent/GB1485664A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2417748B1 (en) | 1975-02-06 |
| DE2417748C2 (en) | 1975-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |