Exhaust system having hybrid cooling arrangement
AssigneeCaterpillar Inc.
InventorSean Patrick OILAR
Life of this patent
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Abstract
An exhaust system is disclosed for a use with an engine. The exhaust system may have a plurality of manifold sections, each being connected to an adjacent one of the plurality of manifold sections and thereby forming an exhaust manifold. The exhaust system may also have a plurality of elbow-shaped coolant adapters, each being configured to connect a corresponding one of the plurality of manifold sections to a corresponding cylinder head of the engine and having a coolant jacket formed therein. The exhaust system may further have a heat shield formed around the exhaust manifold.
Claims20
A coolant adapter for an engine, comprising:
- an elbow-shaped conduit having an exhaust inlet connectable to a cylinder head of the engine and an exhaust outlet connectable to an exhaust manifold of the engine;
- and
- a jacket formed around at least a portion of the elbow-shaped conduit.
An exhaust system for an engine, comprising:
- a plurality of manifold sections, each being connected to an adjacent one of the plurality of manifold sections and thereby forming an exhaust manifold;
- a plurality of elbow-shaped coolant adapters, each being configured to connect a corresponding one of the plurality of manifold sections to a corresponding cylinder head of the engine and having a coolant jacket formed therein;
- and
- a heat shield formed around the exhaust manifold.
A power system, comprising:
- an engine having a plurality of cylinder heads;
- a plurality of manifold sections configured to connect with each other and thereby form an exhaust manifold, each of the plurality of manifold sections having an integral exhaust runner extending from an annular wall;
- a plurality of a coolant adapters, each configured to connect a corresponding integral exhaust runner to a corresponding one of the plurality of cylinder heads, and having a jacket formed therein;
- a plurality of couplings, each configured to connect a coolant outlet of the corresponding one of the plurality of cylinder heads with the jacket via an outboard side of a corresponding one of the plurality of coolant adapters;
- a coolant manifold configured to receive coolant from the plurality of coolant adapters via an inboard side of each of the plurality of coolant adapters;
- a heat shield formed around the exhaust manifold;
- and
- a turbocharger driven by exhaust in the exhaust manifold to pressurize air directed into the engine.
Dependencies are inferred from the claim text.