{
  "$type": "site.standard.document",
  "description": "An internal combustion engine (10) is provided with at least one intake manifold (14) and a turbocharger. The turbocharger includes a rotatable shaft (32); a turbine having a turbine wheel carried by the shaft (32); and a multi-stage compressor (16). The multi-stage compressor (16) includes a first…",
  "path": "/patents/1105761",
  "publishedAt": "2002-03-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B33/446",
    "CATERPILLAR INC [US]"
  ],
  "textContent": "An internal combustion engine (10) is provided with at least one intake manifold (14) and a turbocharger. The turbocharger includes a rotatable shaft (32); a turbine having a turbine wheel carried by the shaft (32); and a multi-stage compressor (16). The multi-stage compressor (16) includes a first compressor wheel (28) carried by the shaft (32), an axially extending first inlet (34) associated with the first compressor wheel (28), a radially extending first outlet (36) associated with the first compressor wheel (28), a second compressor wheel (30) carried by the shaft (32), an axially extending second inlet (38) associated with the second compressor wheel (30), a radially extending second outlet (40) associated with the second compressor wheel (30), and an interstage duct (42) fluidly interconnecting in series the first outlet (36) associated with the first compressor wheel (28) with the second inlet (38) associated with the second compressor wheel (30). The second outlet (40) is fluidly coupled with the intake manifold (14). One or more valves (20, 22) are each fluidly coupled with an ambient environment and the interstage duct (42) or intake manifold (14). Each valve (20, 22) is adapted to open when a pressure of the ambient environment is less than a pressure within the interstage duct (42) or intake manifold (14).",
  "title": "Turbocharger control system"
}