Longitudinally adjustable connecting rod
AssigneeFord Global Technologies, LLC
InventorsGuenter Bartsch, Jens Linsel
Life of this patent
Estimating the term…
Abstract
The invention relates to a longitudinally adjustable connecting rod (1), in which a piston part (2) and a shaft part (9) are telescopically inserted one inside the other. Piston part and shaft part can be locked together at certain lengths by pins (5a, 5a′, 5b, 5b′) supported in the piston part skirt (8), which engage in associated recesses (4a, 4a′, 4b, 4b′) on the shaft part skirt (3). Every two pins (5a, 5a′; 5b, 5b′) are pushed apart by springs (11a, 11b) situated between them. Through corresponding feed ducts (7a) a hydraulic medium can be purposely delivered to the recesses in the piston part skirt (3), in order to push pins situated therein back into the shaft part skirt (8).
Claims13
A length-adjustable connecting rod for an internal combustion engine, said connecting rod extending along an axis, said connecting rod comprising:
- a piston part being coupled to a piston of said engine;
- a shaft part being slidably coupled to said piston part, said shaft part being further coupled to an engine crankshaft;
- and,
- a locking device configured to lock said piston part in at least two axial positions relative to said shaft part.
A length-adjustable connecting rod for an internal combustion engine, said connecting rod extending along an axis, said connecting rod comprising:
- a first part configured to be coupled to a piston of said engine;
- a second part having a first end telescopically coupled to said first part, said second part including a second end configured to be coupled to an engine crankshaft;
- and,
- a locking device configured to lock said first part in at least two axial positions along said axis.
A length-adjustable connecting rod for an internal combustion engine, said connecting rod extending along an axis, said connecting rod comprising:
- a first part configured to be coupled to a piston of said engine;
- a second part having a first end slidably coupled in a guide chamber of said first part, said second part including a second end configured to be coupled to an engine crankshaft;
- and,
- a locking device configured to lock said first part in at least two positions along said axis.
A length-adjustable connecting rod, comprising:
- a first portion adapted for coupling to a piston of an internal combustion engine;
- and
- a second portion adapted for coupling to a crankshaft of the internal combustion engine, such second portion being slidably coupled to the first portion along a longitudinal axis, one of such second portion and first portion having a chamber for receiving a portion of the other one of such second portion and first portion being disposed within a chamber thereof;
- a locking device configured to lock the first portion to the second portion in a selected one of at least two positions, such positions being laterally spaced along the longitudinal axis;
- and
- wherein said locking device comprises:
- a pin positioned transverse to the longitudinal axis, such pin being carried by the one of the second portion and first portion disposed within the chamber;
- a recess disposed in a wall portion of the chamber, such recess being adapted to receive the pin when the pin is axially aligned with the recess.
Dependencies are inferred from the claim text.