Internal combustion engine
AssigneeGM Global Technology Operations LLC
InventorsStefan Vogel, Stefan Lindner
Life of this patent
Estimating the term…
Abstract
An internal combustion engine for a motor vehicle included a crankshaft, at least one piston coupled to the crankshaft for performing strokes in a cylinder as a consequence of a rotation of the crankshaft. An eccentric shaft is coupled to the crankshaft and to the piston in such a manner that through it strokes of the piston are extendable. The internal combustion engine further includes a phase adjuster for adjusting a phase of the coupling of the eccentric shaft to the crankshaft and/or a stroke adjuster for adjusting strokes of the piston, in particular an extension of strokes of the piston by the eccentric shaft.
Claims19
An internal combustion engine for a motor vehicle, comprising:
- a crankshaft;
- a piston coupled to the crankshaft for performing strokes in a cylinder as a consequence of a rotation of the crankshaft;
- an eccentric shaft coupled to the crankshaft and to the piston in such a manner that the strokes of the piston are extendable;
- an adjustment mechanism selected from the group consisting of a phase adjuster configured to adjust a phase of a coupling of the eccentric shaft to the crankshaft, and a stroke adjuster configured to adjust an extension of the stroke of the piston by the eccentric shaft;
- an adjustable crank drive operably coupling the crankshaft, the eccentric shaft and the piston;
- the adjustable crank drive comprising a first connecting rod coupled to the piston, a second connecting rod coupled to the eccentric shaft and a coupling link coupled to the crankshaft and interconnecting the first and second connecting rods;
- and
- the adjustment mechanism comprising the stroke adjuster configured to adjust a length of at least one of the first connecting rod, the second connecting rod or the coupling link.
An internal combustion engine for a motor vehicle, comprising:
- a crankshaft;
- a first piston coupled to the crankshaft for performing strokes in a cylinder as a consequence of a rotation of the crankshaft;
- an eccentric shaft coupled to the crankshaft and to the first piston in such a manner that the strokes of the first piston are extendable;
- an adjustment mechanism selected from the group consisting of a phase adjuster configured to adjust a phase of a coupling of the eccentric shaft to the crankshaft, and a stroke adjuster configured to adjust an extension of the stroke of the first piston by the eccentric shaft;
- a second piston coupled to the crankshaft for performing strokes in a second cylinder as a consequence of the rotation of the crankshaft, wherein the eccentric shaft is coupled to the crankshaft and to the second piston in such a manner that the strokes of the second piston are extendable;
- and
- a second stroke adjuster configured to adjust an extension of the stroke of the second piston by the eccentric shaft.
An internal combustion engine for a motor vehicle, comprising:
- a crankshaft;
- a piston coupled to the crankshaft for performing strokes in a cylinder as a consequence of a rotation of the crankshaft;
- an eccentric shaft coupled to the crankshaft and to the piston in such a manner that the strokes of the piston are extendable;
- an adjustment mechanism selected from the group consisting of a phase adjuster configured to adjust a phase of a coupling of the eccentric shaft to the crankshaft, and a stroke adjuster configured to adjust an extension of the stroke of the piston by the eccentric shaft;
- the adjustment mechanism comprising the phase adjuster configured to adjust the eccentric shaft between an initial position for extending compression and expansion strokes relative to at least one of intake or exhaust strokes by a first amount and a further position for extending compression and expansion strokes relative to at least one of intake or exhaust strokes by a second amount which is greater than the first amount.
An internal combustion engine for a motor vehicle, comprising:
- a crankshaft;
- a piston coupled to the crankshaft for performing strokes in a cylinder as a consequence of a rotation of the crankshaft;
- an eccentric shaft coupled to the crankshaft and to the piston in such a manner that the strokes of the piston are extendable;
- an adjustment mechanism selected from the group consisting of a phase adjuster configured to adjust a phase of a coupling of the eccentric shaft to the crankshaft, and a stroke adjuster configured to adjust an extension of the stroke of the piston by the eccentric shaft;
- the adjustment mechanism comprising the phase adjuster configured to adjust the eccentric shaft between an initial position for extending expansion and exhaust strokes relative to at least one of intake or compression strokes and a further position for extending compression and expansion strokes relative to at least one of intake or exhaust strokes.
Dependencies are inferred from the claim text.