Method and device for operating an internal combustion engine

Details Method and device for operating an internal combustion engine Method and device for operating an internal combustion engine

2006-07-25

2006-07-25

McCall, Eric S. (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

Reexamination Certificate

active

07080547

ABSTRACT:
A method and a device for operating an internal combustion engine having an intake manifold and a ventilation system may allow a reliable and fault-free diagnosis of a fault in the ventilation. The ventilation system may be a tank ventilation or a crankcase ventilation. The ventilation duct is conducted to the intake manifold of the internal combustion engine. At least one pressure differential may be determined between an intake-manifold pressure or an ambient pressure, on the one hand, and a pressure in the ventilation duct, on the other hand. A fault in the ventilation may be diagnosed as a function of the at least one pressure differential.

REFERENCES:
patent: 5964820 (1999-10-01), Miwa et al.
patent: 6029451 (2000-02-01), Gartner
patent: 6250288 (2001-06-01), Fritz
patent: 6276343 (2001-08-01), Kawamura et al.
patent: 6588257 (2003-07-01), Wild et al.
patent: 6631634 (2003-10-01), Cook et al.

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