Internal combustion engine
AssigneeCummins IP, Inc.
InventorsDavid M. Barnes, Jason W. Mackey, Adam C. Cecil
Life of this patent
Estimating the term…
Abstract
An internal combustion engine and related components and methods of manufacturing and implementing an internal combustion engine and related components. The internal combustion engine includes a base, a cylinder block mounted onto the base, a cylinder head mounted onto the block, and a structural overhead member mounted onto the cylinder head, such that the cylinder head is positioned between the cylinder block and the structural overhead member. At least one through-bolt positioned in a through-bolt opening, the through-bolt opening extending from the base to the structural overhead member through the cylinder block and the cylinder head to couple the base, the cylinder block, the cylinder head and the structural overhead member together.
Claims26
An internal combustion engine comprising:
- a base;
- a cylinder block mounted onto the base;
- a cylinder head mounted onto the block;
- a structural overhead member removably mounted onto the cylinder head such that the cylinder head is positioned between the cylinder block and the structural overhead member, the structural overhead member defining apertures configured to receive and retain intake and exhaust cam shafts in a spaced apart relationship with the cylinder head;
- and
- at least one through-bolt positioned in a through-bolt opening, the through-bolt opening extending from the base to the structural overhead member through the cylinder block and the cylinder head to couple the base, the cylinder block, the cylinder head and the structural overhead member together.
A cam carrier of an internal combustion engine, the cam carrier being mounted onto a head of the internal combustion engine, comprising:
- a cam shaft support portion supporting a cam shaft;
- a base portion configured to receive a through-bolt;
- and
- a neck portion positioned between and coupling the cam shaft support portion and the base portion, wherein a gap is defined below the cam shaft between the cam shaft support portion and the base portion,
- wherein the cam shaft support portion, the base portion, and the neck portion are positioned on a same side of the head of the internal combustion engine.
A cam carrier of an internal combustion engine, the cam carrier being mounted onto a cylinder head of the internal combustion engine, comprising:
- a valve train support portion made from a first material, the valve train support portion being mounted directly to the cylinder head;
- and
- a bolt securing portion made from a second material, the bolt securing portion being configured to receive a through-bolt and mounted directly to the cylinder head independently of the valve train support portion, wherein the valve train support surrounds the bolt securing portion, and wherein the bolt securing portion is coupled to the valve train support portion independently of the cylinder head.
A cam carrier of an internal combustion engine, comprising:
- a sidewall enclosing a space;
- a valve train support system positioned within the space, the valve train support system comprising a phaser, an intake cam shaft, an exhaust cam shaft, a plurality of intake bucket tappets, and a plurality of exhaust bucket tappets, each of the plurality of intake bucket tappets comprising an inner portion movable relative to an outer portion;
- and
- a valve train lubrication system positioned within the space, the valve train lubrication system comprising:
- first intake lubrication rifles, first exhaust lubrication rifles, second intake lubrication rifles, and second exhaust lubrication rifles,
- a plurality of feed lines fluidly coupling the first intake lubrication rifles and the intake cam shaft,
- a plurality of feed lines fluidly coupling the first exhaust lubrication rifles and the exhaust cam shaft,
- a plurality of feed lines fluidly coupling the first intake lubrication rifles and the plurality of intake bucket tappets,
- a plurality of feed lines fluidly coupling the first exhaust lubrication rifles and the plurality of exhaust bucket tappets,
- a plurality of lubrication control valves controlling the flow of lubrication between the first intake and exhaust lubrication rifles and the second intake and exhaust lubrication rifles,
- a plurality of feed lines fluidly coupling the second intake lubrication rifles and the plurality of intake bucket tappets, and
- a plurality of feed lines fluidly coupling the second exhaust lubrication rifles and the plurality of exhaust bucket tappets.
Dependencies are inferred from the claim text.