Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1992-12-18
1994-06-14
Argenbright, Tony M.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60284, F01N 322
Patent
active
053199286
ABSTRACT:
The emission of toxic materials when starting an internal combustion engine equipped with a catalytic converter and a secondary air pump can be further reduced with the method and arrangement of the invention. This reduction takes place by a switch-on of the secondary air pump under selectable conditions which include a warm start of the engine. The danger of overheating the catalytic converter by the operation of the secondary air pump for a warm engine is taken into account by a variable switch-on duration of the secondary air pump which can be realized by a counting procedure having an increment dependent on operating parameters.
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"Die Abgasreinigung der neuen Mercedes-Benz 300 SL-24 und 500 SL-Aufbau und Wirkungsweise", by W. Zahn et al. MTZ Motortechnische Zeitschrift 50 Dec. (1989) 6, p. 249.
Bone Rainer
Lange Jog
Moser Winfried
Argenbright Tony M.
Macy M.
Ottesen Walter
Robert & Bosch GmbH
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