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Controllable aggregate-drive for internal combustion engines, especially for motor vehicle internal combustion engines

閱讀：873發(fā)布：2023-04-30

專利匯可以提供Controllable aggregate-drive for internal combustion engines, especially for motor vehicle internal combustion engines專利檢索，專利查詢，專利分析的服務(wù)。并且A controllable aggregate-drive for internal combustion engines, especially for motor vehicle internal combustion engines, in which a transmission ratio providing a speed increase is obtained with the aid of an adjustable V-belt transmission at low rotational speeds of the engine and a transmission ratio providing a speed reduction takes place at high rotational speeds of the internal combustion engine; the adjustment thereby takes place at the drive pulley of the V-belt transmission with the aid of an adjusting piston actuated by pressure oil against a spring force whereby the pressure space receiving the adjusting piston is filled with oil having a predetermined constant basic pressure from the lubricating oil circulation of the internal combustion engine by way of a control valve while the adjusting piston is actuated above the basic pressure by the centrifugal force of the oil-filling on the inside of the pressure space.，下面是Controllable aggregate-drive for internal combustion engines, especially for motor vehicle internal combustion engines專利的具體信息內(nèi)容。

1. A controllable aggregate-drive for internal combustion engines which includes an adjustable V-belt transmission means adapted to be operatively connected with a crankshaft of the engine and operable to provide a transmission ratio with a speed increase at low rotational speeds of the internal combustion engine and a transmission ratio with a speed reduction at high rotational speeds of the internal combustion engine, said V-belt transmission means including a drive pulley means adjustable with the aid of an adjusting piston means actuated by pressure oil against a spring force, characterized by cylinder space means forming a pressure space means and receiving the adjusting piston means, the pressure space means is filled with oil having a predetermined substantially constant base pressure from the lubricating oil circulation of the internal combustion engine by way of a control valve means and in that above the base pressure the adjusting piston means is acted upon by the centrifugal force of the oil-filling within said pressure space means.
2. An aggregate-drive according to claim 1, characterized in that above said base pressure the adjusting piston means is actuated substantially exclusively by said centrifugal force.
3. An aggregate-drive according to claim 1, characterized in that the drive pulley means is supported at the engine block in a bracket means and is non-rotatably connected with the engine crankshaft while the control valve means is arranged in said bracket means substantially transversely to the axis of the drive pulley means.
4. An aggregate-drive according to claim 3, characterized in that the oil adjusted to the base pressure is adapted to be fed from the control valve means to the cylinder space means receiving the adjusting piston means by way of inclined bore means leading into the crankshaft and from there by means of a central bore into a fastening bolt for the drive pulley means.
5. An aggregate-drive according to claim 4, characterized in that the adjusting piston means has about the same size as the drive pulley means.
6. An aggregate-drive according to claim 5, characterized in that the cylinder space means receiving the adjusting piston means is in constant communication with the discharge by way of a small throttle.
7. An aggregate-drive according to claim 6, characterized in that the control valve means includes a space receiving a spring which is connected with the discharge by way of a small throttle bore.
8. An aggregate-drive according to claim 7, characterized in that the adjusting piston means is constructed as plate-shaped plunger piston and is provided with a roller bellows which at its outer edge is clamped between two housing parts, one of said housing parts forming the cylinder space means and being connected with the crankshaft and the other housing part having a drum portion for the rolling-off action of the roller bellows and additionally forming an axially immovable pulley member of the drive pulley means.
9. An aggregate-drive according to claim 8, characterized in that the immovable pulley member is connected with a hub portion which is extended sleeve-shaped toward the end opposite the crankshaft and receives thereat the axially movable pulley member which in its turn is operatively connected with the adjusting piston means by thrust bolt means extending through the fixed pulley member.
10. An aggregate-drive according to claim 9, characterized in that the axially immovable pulley member is supported at an abutment by means of a spring, said abutment being secured at the end of the extension of the sleeve-shaped hub portion.
11. An aggregate-drive according to claim 10, charactErized in that said spring is a cup spring.
12. An aggregate-drive according to claim 1, characterized in that the oil adjusted to the base pressure is adapted to be fed from the control valve means to the cylinder space means receiving the adjusting piston means by way of inclined bore means leading into the crankshaft and from there by means of a central bore into a fastening bolt for the drive pulley means.
13. An aggregate-drive according to claim 1, characterized in that the adjusting piston means has about the same size as the drive pulley means.
14. An aggregate-drive according to claim 1, characterized in that the cylinder space means receiving the adjusting piston means is in constant communication with the discharge by way of a small throttle.
15. An aggregate-drive according to claim 1, characterized in that the control valve means includes a space receiving a spring which is connected with the discharge by way of a small throttle bore.
16. An aggregate-drive according to claim 1, characterized in that the adjusting piston means is constructed as plate-shaped plunger piston and is provided with a roller bellows which at its outer edge is clamped between two housing parts, one of said housing parts forming the cylinder space means and being connected with the crankshaft and the other housing part having a drum portion for the rolling-off action of the roller bellows and additionally forming an axially immovable pulley member of the drive pulley means.
17. An aggregate-drive with an axially immovable pulley member and an axially movable pulley member according to claim 1, characterized in that the immovable pulley member is connected with a hub portion which is extended sleeve-shaped toward the end opposite the crankshaft and receives thereat the axially movable pulley member which in its turn is operatively connected with the adjusting piston means by thrust bolt means extending through the fixed pulley member.
18. An aggregate-drive according to claim 17, characterized in that the axially immovable pulley member is supported at an abutment by means of a spring, said abutment being secured at the end of the extension of the sleeve-shaped hub portion.
19. An aggregate-drive according to claim 18, characterized in that said spring is a cup spring.
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