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US 6,282,899 B1Granted
Scrolless compressor housing
AssigneeCaterpillar Inc.
InventorJohn R. Gladden
Life of this patent
Estimating the term…
Abstract
A turbocharger for an internal combustion engine is described. Compressor wheels for first and second compression stages are disposed in box-like enclosures. Turbines, connected by shafts to the compressor wheels, are disposed outside the enclosures. Inlets in the first enclosure provide fluid to the first stage compressors, which operate to pressurize the first enclosure with the fluid. Fluid flows from the first enclosure to inlets of the second stage compressors, which operate to pressurize the second enclosure with the fluid.
Claims25
A turbocharger for an internal combustion engine, comprising:
- a first stage enclosure defining a first hollow space within said first stage enclosure and an area outside said first stage enclosure;
- a first stage first shaft;
- a first stage first turbine disposed outside said first stage enclosure, including a first stage first turbine wheel carried by said first stage first shaft;
- a first stage first compressor including:
- a first stage first compressor wheel disposed in said first stage enclosure and carried by said first stage first shaft;
- a first stage first compressor inlet defined by said first stage enclosure and associated with said first stage first compressor wheel, said first stage first compressor inlet being in fluid flow communication with said area outside said first stage enclosure;
- and
- a first stage first compressor outlet associated with said first stage first compressor wheel, said first stage first compressor outlet being in fluid flow communication with said first hollow space;
- a second stage enclosure defining a second hollow space within said second stage enclosure and an area outside said second stage enclosure;
- a second stage first shaft;
- a second stage first turbine disposed outside said second stage enclosure, including a second stage first turbine wheel carried by said second stage first shaft;
- and
- a second stage first compressor including:
- a second stage first compressor wheel disposed in said second stage enclosure and carried by said second stage first shaft;
- a second stage first compressor inlet defined by said second stage enclosure and associated with said second stage first compressor wheel, said second stage first compressor inlet being in fluid flow communication with said first hollow space;
- and
- a second stage first compressor outlet associated with said second stage first compressor wheel, said second stage first compressor outlet being in fluid flow communication with said second hollow space.
14 more elements
An internal combustion engine, comprising:
- an exhaust manifold;
- a plurality of combustion cylinders, each said combustion cylinder having a cylinder head and an inlet port in said cylinder head;
- a turbocharger, including:
- a first stage enclosure defining a first hollow space within said first stage enclosure and an area outside said first stage enclosure;
- a first stage first shaft;
- a first stage first turbine disposed outside said first stage enclosure, and having a first stage first turbine wheel carried by said first stage first shaft and a first stage first turbine inlet in fluid flow communication with said exhaust manifold;
- a first stage compressor having:
- a first stage first compressor wheel disposed in said first stage enclosure and carried by said first stage first shaft;
- a first stage first compressor inlet defined by said first stage enclosure and associated with said first stage first compressor wheel, said first stage first compressor inlet being in fluid flow communication with said area outside said first stage enclosure;
- and
- a first stage first compressor outlet associated with said first stage first compressor wheel, said first stage first compressor outlet being in fluid flow communication with said first hollow space;
- a second stage enclosure defining a second hollow space within said second stage enclosure and an area outside said second stage enclosure, said second hollow space being in fluid flow communication with said inlet ports;
- a second stage first shaft;
- a second stage first turbine disposed outside said second stage enclosure, and having a second stage first turbine wheel carried by said second stage first shaft, and a second stage first turbine inlet in fluid flow communication with said exhaust manifold;
- and
- a second stage first compressor having:
- a second stage first compressor wheel disposed in said second stage enclosure,
- a second stage first compressor inlet associated with said second stage first compressor wheel and in fluid flow communication with said first hollow space, and
- a second stage first compressor outlet associated with said second stage first compressor wheel, said second stage first compressor outlet being in fluid flow communication with said second hollow space;
- fluid flow means interconnecting said second hollow space and said inlet ports.
17 more elements
Dependencies are inferred from the claim text.