Valve body of a gas exchange valve, gas exchange valve and internal combustion engine
AssigneeMAN Energy Solutions SE
InventorGeorg Litzel
Life of this patent
Estimating the term…
Abstract
A valve body for a gas exchange valve of a cylinder of an internal combustion engine can be brought to lie against a valve seat of the gas exchange valve for closing the gas exchange valve and can be removed from the valve seat to open the gas exchange valve. The valve body is formed in multiple parts and has a first valve disc part interacting with the valve seat and a second valve disc part that is connected to the first valve disc part in a fixed manner and faces a combustion chamber of the cylinder. Between the first valve disc part and the second valve disc part a hollow space serving at least for the cooling of the second valve disc part is formed.
Claims9
A valve body for a gas exchange valve of a cylinder of an internal combustion engine, comprising:
- a first unitary valve disc part of the valve body having a valve stem and configured to interact with a valve seat;
- a second valve disc part of the valve body connected to the first valve disc part in a fixed manner and arranged to face a combustion chamber of the cylinder;
- a feed for the cooling medium arranged in the first valve disc part;
- and
- a discharge for the cooling medium arranged in the first valve disc part,
- wherein the feed and discharge are each offset from a longitudinal axis of the valve stem,
- wherein a cross section of the feed and a cross section of the discharge are substantially equal,
- wherein the first valve disc part and the second valve disc part define a hollow space therebetween configured to at least cool the second valve disc part;
- wherein the first valve disc part of the valve body is configured to close the gas exchange valve when it is in contact with the valve seat, and
- wherein the first valve disc part of the valve body is configured to open the gas exchange valve when removed from the valve seat.
A gas exchange valve of an internal combustion engine, comprising:
- a valve seat;
- and
- a valve body comprising:
- a first unitary valve disc part of the valve body having a valve stem and configured to interact with a valve seat;
- a second valve disc part of the valve body connected to the first valve disc part in a fixed manner and arranged to face a combustion chamber of the cylinder;
- a feed for the cooling medium arranged in the first valve disc part;
- and
- a discharge for the cooling medium arranged in the first valve disc part,
- wherein the feed and discharge are each offset from a longitudinal axis of the valve stem,
- wherein a cross section of the feed and a cross section of the discharge are substantially equal;
- wherein the first valve disc part and the second valve disc part define a hollow space therebetween configured to at least cool the second valve disc part;
- wherein the first valve disc part of the valve body is configured to close the gas exchange valve when it is in contact with the valve seat, and
- wherein the first valve disc part of the valve body is configured to open the gas exchange valve when removed from the valve seat.
An internal combustion engine comprising:
- at least one cylinder, wherein each cylinder comprises:
- at least one inlet-side gas exchange valve for charge air;
- and
- at least one exhaust-side gas exchange valve for exhaust gas,
- wherein at least one of the respective inlet-side and exhaust-side gas exchange valve comprises:
- a valve seat;
- and
- a valve body comprising:
- a first unitary valve disc part of the valve body having a valve stem and configured to interact with a valve seat;
- a second valve disc part of the valve body connected to the first valve disc part in a fixed manner and arranged to face a combustion chamber of the cylinder;
- a feed for the cooling medium arranged in the first valve disc part;
- and
- a discharge for the cooling medium arranged in the first valve disc part,
- wherein the feed and discharge are each offset from a longitudinal axis of the valve stem,
- wherein a cross section of the feed and a cross section of the discharge are substantially equal;
- wherein the first valve disc part and the second valve disc part define a hollow space therebetween configured to at least cool the second valve disc part;
- and
- wherein the first valve disc part of the valve body is configured to close the gas exchange valve when it is in contact with the valve seat, and
- wherein the first valve disc part of the valve body is configured to open the gas exchange valve when removed from the valve seat.
Dependencies are inferred from the claim text.