Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1998-01-16
1999-11-23
Kwon, John
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123520, F02M 2500
Patent
active
059881518
ABSTRACT:
A Method for tank venting in an internal combustion engine includes ascertaining a degree of loading of an activated carbon filter. A desired flushing flow is calculated and a pulse duty factor for a tank venting valve is set depending on the level of the degree of loading and a predefined value for a maximum possible fuel mass flow through the tank venting valve. This is done as a function of the desired flushing flow, the temperature of a flushing stream and a pressure gradient at the tank venting valve, in such a way that the lambda deviation, brought about by a flushing procedure, of a lambda controller of the lambda control device, does not exceed a predefined maximum value.
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Greenberg Laurence A.
Kwon John
Lerner Herbert L.
Siemens Aktiengesellschaft
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