US 2026/0309060 A1 · VANE SEAL SPRING

Abstract

A cam phaser comprises a housing and a rotor. The rotor is arranged in the housing and is designed to be rotated within the housing. The rotor comprises a hub and a plurality of vanes protruding from the hub. The plurality of vanes are disposed to move within respective chambers formed by the rotor and the housing, wherein each vane divides each respective chamber into an advance chamber and a retard chamber. Each vane comprises a vane seal element and a seal spring which are arranged in a vane groove at the end of the respective vane, wherein the seal spring biases the vane seal element towards an inner surface of the housing. An element made of a plastic material, which is preferably made of polyether ether ketone (PEEK), is arranged within each vane groove between the bottom of the respective vane groove and the respective seal spring.

Claims21

Dependent claims

A cam phaser for changing and/or maintaining an angular relationship between a crankshaft and at least one camshaft, comprising:

a housing and a rotor,
wherein the rotor is arranged in the housing and is designed to be rotated within the housing,
wherein the rotor comprises a hub and a plurality of vanes protruding from the hub, the plurality of vanes being disposed to move within respective chambers formed by the rotor and the housing, each vane dividing each respective chamber into an advance chamber and a retard chamber,
wherein each vane comprises a vane seal element and a seal spring which are arranged in a vane groove at the end of the respective vane, wherein the seal spring biases the vane seal element towards an inner surface of the housing,
wherein an element made of a plastic material is arranged within each vane groove between the bottom of the respective vane groove and the respective seal spring.

2 more elements

A cam phaser for changing and/or maintaining an angular relationship between a crankshaft and at least one camshaft, comprising:

a housing and a rotor,
wherein the rotor is arranged in the housing and is designed to be rotated within the housing,
wherein the rotor comprises a hub and a plurality of vanes protruding from the hub, the plurality of vanes being disposed to move within respective chambers formed by the rotor and the housing, each vane dividing each respective chamber into an advance chamber and a retard chamber,
wherein the housing has protrusions for dividing the respective chambers,
wherein each protrusion extends towards the hub of the rotor,
wherein each vane comprises a vane seal element and a seal spring which are arranged in a vane groove at the end of the respective vane, wherein the seal spring biases the vane seal element towards an inner surface of the housing, and
wherein each protrusion comprises a hub seal element and a seal spring which are arranged in a groove at the inner end of the protrusion, wherein the seal spring biases the hub seal element towards an outer surface of the hub,
wherein that the vane seal elements and/or the hub seal elements are made of a plastic material.

5 more elements

Dependencies are inferred from the claim text.

Vane seal spring

Life of this patent

Vane seal spring

Life of this patent

Abstract

Claims21