Method of estimating mass airflow in turbocharged engines having exhaust gas recirculation

• US 6,035,639 A
• Filed: 01/26/1999
• Issued: 03/14/2000
• Est. Priority Date: 01/26/1999
• Status: Expired due to Fees

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Van Nieuwstadt, Michiel J., Jankovic, Mrdjan J., Kolmanovsky, Ilya V., Moraal, Paul Eduard
• Primary Examiner(s): Argenbright, Tony M.
• Assistant Examiner(s): Castro, Arnold
• Application Number:
  US09/236,991
• Time in Patent Office: 413 Days
• Field of Search: 60/602, 60/605.2, 60/606, 60/607, 60/608, 701/108
• US Class Current: 60/605.2
• CPC Class Codes: F02B 37/24 by using pumps or turbines with adjustable guide vanes
• CPC Class Codes: F02D 21/08 the other gas being the exhaust gas of engine
• CPC Class Codes: F02D 2200/0402 the parameter being determined by using a model of the engine intake or its components
• CPC Class Codes: F02D 41/0007 for control of turbo-charged or super-charged engines control of the pumps per se F02B37/12
• CPC Class Codes: F02D 41/0072 Estimating, calculating or determining the EGR rate, amount or flow sensors in EGR systems F02M26/45
• CPC Class Codes: F02D 41/1448 the characteristics being an exhaust gas pressure
• CPC Class Codes: F02M 26/05 High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
• CPC Class Codes: F02M 26/10 having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/40 Engine management systems

Claims