Cylinder head for internal combustion engine
AssigneeCummins Intellectual Property, Inc.
InventorsJeffrey D. JONES, Vipin PRABHAKARAN, David M. BARNES
Life of this patent
Estimating the term…
Abstract
Rib configurations for increasing the structural efficiency of a cylinder head, which relates to a peak combustion pressure capability of the cylinder head. In addition to increasing peak combustion pressure, the rib configurations may also improve sealing of the cylinder head and may improve the durability of an associated cylinder head gasket.
Claims20
A cylinder head for an internal combustion engine, the cylinder head comprising:
- a bottom deck;
- a component bore having a wall extending longitudinally from the bottom deck;
- a bolt boss extending longitudinally from the bottom deck and positioned a first radial distance from the component bore;
- a valve boss positioned a second radial distance from the component bore, the second radial distance being less than the first radial distance;
- and
- an intake passage formed in the cylinder head, the intake passage including an intake passage wall;
- an exhaust passage formed in the cylinder head, the exhaust passage including an exhaust passage wall;
- and
- a first rib extending longitudinally upward from at least one of the intake passage wall, the exhaust passage wall, and the bottom deck, and outwardly away from the component bore, the first rib including a first rib end connected to the bolt boss at a location on an upper portion of the bolt boss, wherein the first rib is free from contact with the component bore wall.
(canceled)
A cylinder head for an internal combustion engine, the cylinder head comprising:
- a bottom deck;
- a component bore having a component bore wall extending longitudinally from the bottom deck;
- a bolt boss extending longitudinally from the bottom deck and positioned at a first radial distance from the component bore;
- a valve boss positioned a second radial distance from the component bore, the second radial distance being less than the first radial distance;
- an intake passage formed in the cylinder head, the intake passage including an intake passage wall;
- an exhaust passage formed in the cylinder head, the exhaust passage including an exhaust passage wall;
- and
- a first rib extending longitudinally upward from the bottom deck and inwardly toward the component bore wall to connect to a location on the component bore wall, the first rib being free from contact with the bolt boss.
(canceled)
A cylinder head for an internal combustion engine, the cylinder head comprising:
- a bottom deck;
- at least one intake passage including an intake passage wall;
- at least one exhaust passage including an exhaust passage wall;
- a component bore including an component bore wall and a component bore center extending longitudinally from the bottom deck;
- a plurality of bolt bosses, each bolt boss including a bolt boss center, extending longitudinally from the bottom deck, each one of the plurality of bolt bosses positioned at spaced angles about the component bore at one or more first radial distances from the component bore;
- a plurality of valve bosses, each valve boss having a valve boss center and extending longitudinally from one intake passage wall or one exhaust passage wall, each one of the plurality of valve bosses positioned at spaced angles about the component bore at one or more second radial distances, the second radial distances being less than the first radial distances;
- and
- a rib extending longitudinally from the bottom deck and between two of the plurality of bolt bosses to connect the two bolt bosses, the rib being in the shape of a “V” when viewed perpendicularly to the rib, with a bottom of the “V” positioned closer to the bottom deck than a top of the “V.”
(canceled)
Dependencies are inferred from the claim text.