Method and device for monitoring a secondary-air system of a mot

Details Method and device for monitoring a secondary-air system of a mot Method and device for monitoring a secondary-air system of a mot

1994-12-14

1996-08-06

Chilcot, Richard

Measuring and testing

Simulating operating condition

Marine

60277, F01N 322

Patent

active

055422926

ABSTRACT:
In a method and device for monitoring a secondary-air system, a first value is determined which characterizes the secondary air stream blown by the secondary-air system into the exhaust-gas channel of an internal combustion engine. On the basis of this first value, the functioning of the secondary-air system is judged. If the first value lies within a predeterminable interval, it is concluded that the secondary-air system is operating properly. If the first value, on the other hand, lies outside of this predeterminable interval, it is concluded that a malfunction is present. The first value is determined from a second value which characterizes the stream of air fed to the internal combustion engine, from the air/fuel ratio of the mixture drawn in by the internal combustion engine, and from the air/fuel ratio prevailing in the exhaust-gas channel downstream of the place of introduction of the secondary-air line.

REFERENCES:
patent: 3967929 (1976-07-01), Tamazawa et al.
patent: 4000615 (1977-01-01), Bockelmann et al.
patent: 4026106 (1977-05-01), Tamazawa et al.
patent: 4099377 (1978-07-01), Yoshimura et al.
patent: 4209981 (1980-07-01), Miyamori et al.
patent: 4233811 (1980-11-01), Masaki
patent: 4383408 (1983-05-01), Ujihashi et al.
patent: 4583363 (1986-04-01), Urushidani et al.
patent: 5060474 (1991-10-01), Aramaki
patent: 5113651 (1992-05-01), Kotzan et al.
patent: 5119631 (1992-06-01), Kayanuma et al.
patent: 5136842 (1992-08-01), Achleitner et al.
patent: 5152137 (1992-10-01), Nishizawa
patent: 5307626 (1994-05-01), Maus et al.
patent: 5333446 (1994-08-01), Itoh
patent: 5345763 (1994-09-01), Sato
patent: 5355671 (1994-10-01), Maus et al.
patent: 5357752 (1994-10-01), Lucchesi
patent: 5381658 (1995-01-01), Meguro
patent: 5388401 (1995-02-01), Nishizawa et al.
patent: 5388402 (1995-02-01), Aoki et al.

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