Rocker arm assemblies
AssigneeEaton Intelligent Power Limited
InventorNicola Andrisani
Life of this patent
Estimating the term…
Abstract
A rocker arm assembly can comprise a rocker tube configured to be positioned around a rocker shaft, the rocker tube comprising a retention mechanism. A first rocker arm can be press-fit to the rocker tube. A second rocker arm can be pivotably mounted around the rocker tube and retained on the rocker tube by the retention mechanism. An alternative rocker arm assembly, that can be combined with the first rocker arm assembly, can comprise a first and second rocker am and a plate fixed to the first rocker arm. The plate can comprise an extension extending over the second rocker arm. A lost motion spring can be installed between the second rocker arm and the extension.
Claims20
A rocker arm assembly comprising:
- a rocker tube configured to be positioned around a rocker shaft, the rocker tube comprising a retention mechanism;
- a first rocker arm press-fit to the rocker tube;
- a second rocker arm pivotably mounted around the rocker tube and retained on the rocker tube by the retention mechanism;
- and
- a switchable capsule configured to selectively switch between an on-position and an off-position,
- wherein the first rocker arm is configured to receive a first valve lift profile from a first cam lobe and the second rocker arm is configured to receive a second valve lift profile from a second cam lobe,
- wherein the first rocker arm comprises a target surface to receive force from the second rocker arm,
- wherein the on-position of the switchable capsule results in a transfer of force from the second rocker arm to the target surface, and
- wherein the off-position results in the switchable capsule collapsing against the target surface.
A rocker arm assembly comprising:
- a first rocker arm configured to pivotably mount around a rocker shaft;
- a second rocker arm configured to pivotably mount around the rocker shaft;
- a plate fixed to the first rocker arm, the plate comprising an extension extending over the second rocker arm;
- a lost motion spring installed between the second rocker arm and the extension;
- and
- a switchable capsule configured to selectively switch between an on-position and an off-position,
- wherein the first rocker arm is configured to receive a first valve lift profile from a first cam lobe and the second rocker arm is configured to receive a second valve lift profile from a second cam lobe,
- wherein the first rocker arm comprises a target surface to receive force from the second rocker arm,
- wherein the on-position of the switchable capsule results in a transfer of force from the second rocker arm to the target surface, and
- wherein the off-position results in the switchable capsule collapsing against the target surface.
Dependencies are inferred from the claim text.