Multi-cylinder air-compressing injection-type internal-combustio

Details Multi-cylinder air-compressing injection-type internal-combustio Multi-cylinder air-compressing injection-type internal-combustio

1998-07-16

2000-11-07

Argenbright, Tony M.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60278, 60297, F01N 318, F02M 2507

Patent

active

061419591

ABSTRACT:
A multi-cylinder air-compressing injection-type internal-combustion engine having a nitric oxide adsorber catalyst and an exhaust gas return device. In order to increase the hydrocarbon fraction in the exhaust gas in front of an exhaust gas aftertreatment device during a regeneration phase and to reduce the oxygen content, exhaust gas pipes of the cylinders are divided into at least two flows, which extend separately from one another at least along a distance. An increased hydrocarbon emission is generated exclusively in the cylinders of one of the flows at times. Another of the flows is connected by way of the exhaust gas return device with an air intake pipe of the internal-combustion engine.

REFERENCES:
patent: 4142492 (1979-03-01), Kobayashi et al.
patent: 4151715 (1979-05-01), Tachibana et al.
patent: 4179892 (1979-12-01), Heydrich
patent: 4467602 (1984-08-01), Iizuka et al.
patent: 5894726 (1999-04-01), Monnier
Patent Abstracts of Japan, vol. 18, No. 579, Nov. 7, 1994.

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