Dual-equal cam phasing with variable overlap
AssigneeGM Global Technology Operations LLC
InventorRichard Stephen Davis
Life of this patent
Estimating the term…
Abstract
A cam phaser assembly may include a drive plate assembly, a cavity plate, and a driven plate assembly. The drive plate assembly may include a drive plate and a first vane fixed for rotation with the drive plate. The cavity plate may be rotationally driven by the drive plate and may define first and second chambers. The first vane may extend into the first chamber. The driven plate assembly may be rotationally driven by the drive plate assembly and may include a driven plate and a second vane fixed for rotation with the driven plate that extends into the second chamber.
Claims20
A cam phaser assembly comprising:
- a drive plate assembly including a drive plate and a first vane fixed for rotation with the drive plate;
- a cavity plate that is rotationally driven by the drive plate and defining first and second chambers, the first vane extending into the first chamber;
- and
- a driven plate assembly that is rotationally driven by the drive plate assembly and including a driven plate and a second vane fixed for rotation with the driven plate and extending into the second chamber.
The cam phaser assembly of claim 2, wherein the drive plate includes a hub that is adapted to be driven by a belt.
An engine assembly comprising:
- an engine structure;
- a cam phaser assembly supported on the engine structure and including:
- a drive plate assembly including a drive plate and a first vane fixed for rotation with the drive plate;
- a cavity plate that is rotationally driven by the drive plate assembly and defining first and second chambers, the first vane extending into the first chamber;
- and
- a driven plate assembly that is rotationally driven by the drive plate assembly and including a driven plate and a second vane fixed for rotation with the driven plate and extending into the second chamber;
- and
- a concentric camshaft assembly supported on the engine structure and including first and second shafts that are rotatable relative to one another, the first shaft being fixed for rotation with the cavity plate and the second shaft being fixed for rotation with the driven plate.
Dependencies are inferred from the claim text.