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Method for controlling the charging pressure at a turbocharged combustion engine, and a corresponding combustion engine

  • US 6,883,319 B2
  • Filed: 03/27/2002
  • Issued: 04/26/2005
  • Est. Priority Date: 03/30/2001
  • Status: Expired due to Fees
First Claim
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1. A method for controlling the charging pressure in an exhaust-driven turbocompressor which is connected to an internal combustion engine, where the engine has at least one cylinder, an intake valve per cylinder, a divided exhaust gas flow and at least two exhaust valves including a first exhaust valve connected via a first exhaust manifold to an exhaust-driven turbine of the turbocompressor and a second exhaust valve connected via a second exhaust manifold to an exhaust system of the engine downstream of the exhaust driven turbine, the method comprising varying opening periods of the exhaust valves in relation to one another in order to adapt the exhaust gas flow through the exhaust turbine to a value which provides a desired charging pressure in the engine and opening the second exhaust valve increasingly earlier as the desired charging pressure is lowered.

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