Zero float valve for internal combustion engine and method of operation thereof

A valve apparatus for an internal combustion engine having a combustion chamber in which a fuel mixture is combusted as well as an intake port coupled to an intake manifold and an exhaust port coupled to an exhaust manifold, the valve apparatus comprising:

• a main part having a wall section defining at least part of a valve cavity which extends along a longitudinal length of the main part, and an opening located in the wall section of the main part and which is flow connected to the combustion chamber;
• an outer part configured and arranged so as to be reciprocally located within at least part of the valve cavity, the outer part having a cylindrical wall section which extends along a longitudinal axis of the outer part;
• an inner part coupled to the outer part and having a first end situated outside of the cavity and a second end situated within the cavity and adjacent to the outer part, the inner part having a wall section defining an inner passage situated between the first and second ends, a first opening situated at the first end which is in flow communication with one of the intake or exhaust ports, and one or more openings in the wall section proximate to the second end;
• and
• a driving part for reciprocally locating the outer part and the inner part relative to the main part so as to alternate between a flow communication and flow-communication blocked states.

An internal combustion engine having a cylinder defining at least part of a combustion chamber in which a fuel mixture is combusted, an intake port coupled to an intake manifold, and an exhaust port coupled to an exhaust manifold, the internal combustion engine comprising:

• a valve for controlling flow to or from the combustion chamber, the valve comprising:
• a main part having a wall section defining a valve cavity extending along a longitudinal length of the main part and an opening located in the wall section of the main part, the opening flow connected to the combustion chamber;
• an outer part configured and arranged so as to be reciprocally located in the valve cavity, the outer part having a wall section defining an inner passage extending along a longitudinal axis thereof;
• an inner part connected to the main part and having a first end situated outside of the cavity and a second end situated within the cavity and the inner passage of the outer part, the inner part having a wall section defining an inner passage extending between the first and second ends, a first opening at the first end in flow communication with the manifold, and one or more openings in that part of the wall section which is situated within the cavity;
• and
• a driving part for reciprocally locating the outer part relative to both the main part and the outer part so as to alternate between a flow communication and a flow-communication blocked states.