Method and arrangement for controlling the supply of secondary a

Details Method and arrangement for controlling the supply of secondary a Method and arrangement for controlling the supply of secondary a

1994-03-25

1995-08-29

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60284, 60289, F01N 322

Patent

active

054449758

ABSTRACT:
The invention is directed to a method and an arrangement for controlling the supply of secondary air to the exhaust gas of an internal combustion engine. A method for diagnosing this arrangement is also provided. The arrangement includes an electrically operated secondary air pump which can be operated in at least two stages in dependence upon operating parameters of the engine. In this way, the supply of secondary air can be finely adapted to the actual value of the exhaust gas quantity supplied by the engine. This fine adaptation is determined by the number of stages. Resistors are switched into the current supply of the secondary air pump for the drive which has at least two stages.

REFERENCES:
patent: 3503716 (1970-03-01), Berger
patent: 3775064 (1973-11-01), Berger
patent: 3779015 (1973-12-01), Maruoka
"The Emission Control System of the New 300 Sl-24 and 500 SL--Structure and Function" by W. Zahn et al, Motortechnische Zeitschrift 50 (1989), vol. 6, pp. 247 to 254 (no translation).

Affiliated with

Also associated with

Rating

Method and arrangement for controlling the supply of secondary a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and arrangement for controlling the supply of secondary a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and arrangement for controlling the supply of secondary a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1812281