Method for determining the exhaust pressure of a...

Details Method for determining the exhaust pressure of a... Method for determining the exhaust pressure of a...

2005-07-11

2010-02-23

Denion, Thomas (Department: 3748)

Internal-combustion engines

Charge forming device

Supercharger

C060S605100

Reexamination Certificate

active

07665448

ABSTRACT:
A method for determining the exhaust pressure (Pr) of a turbocharged internal combustion engine, including a solenoid by-pass valve for the exhaust gas, characterized in that an exhaust pressure (Pi) is determined as a function of the inlet air flow to the engine, (Ar), the engine speed (Rr) and the degree of opening of the solenoid exhaust by-pass valve (Tr), by interpolation from a reference map having exhaust gas pressure values (Pc) for given inlet air flow values (Ac), the engine speed (Rc) and the degree of opening of the solenoid exhaust by-pass valve (Tc), and the exhaust pressure determined by the interpolation (Pi) is corrected as a function of ambient pressure values (Pa, Po).

REFERENCES:
patent: 6715287 (2004-04-01), Engel et al.
patent: 42 14 648 (1993-11-01), None
patent: 1 221 544 (2002-07-01), None
patent: 1 416 138 (2004-05-01), None
patent: 2000-356162 (2000-12-01), None

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