US 10,648,377 B2 · Variable valve actuation mechanism, an internal combustion engine, and a vehicle

Abstract

A variable valve actuation mechanism is provided for an internal combustion engine including at least one valve for control of gas admission to a cylinder of the engine and/or gas exhaust from the cylinder. The mechanism includes two concentrically arranged camshafts, a cam set comprising two cams, each fixed to a respective of the camshafts, whereby the camshafts are arranged to be turned in relation to each other, so as to change the combined profile of the cams, and a cam follower adapted to follow the combined profile of the cams and to actuate at least one of the at least one valve in dependence on the combined profile of the cams, wherein the cam follower includes two rollers, each roller being adapted to follow a respective one of the cams.

Claims24

Dependent claims

A variable valve actuation mechanism for an internal combustion engine comprising at least one valve for control of gas admission to a cylinder of the engine and/or gas exhaust from the cylinder, comprising:

two camshafts, wherein the two camshafts are concentrically arranged;
a cam set comprising two cams, each of the two cams fixed to a respective one of the two camshafts, whereby the two camshafts are arranged to be turned in relation to each other, so as to change a combined profile of the cams;
and
a cam follower adapted to follow the combined profile of the two cams and to actuate a valve in dependence on the combined profile of the two cams, wherein the cam follower comprises two rollers, each of the two rollers being adapted to follow a respective one of the two cams.

1 more element

Dependencies are inferred from the claim text.

Variable valve actuation mechanism, an internal combustion engine, and a vehicle

Life of this patent

Variable valve actuation mechanism, an internal combustion engine, and a vehicle

Life of this patent

Abstract

Claims24