Unitary hybrid exhaust system and method for reducing particulate emissions from internal combustion engines

Patent · Tue Oct 01 04:00:00 EDT 1991

OSTI ID:5741979

Clerc, J C; Gladden, J R; Miller, P R

This patent describes a system for removing particulate matter from exhaust gas of an internal combustion engine. It comprises a main flow passage and a by-pass flow passage for conducting the exhaust gas from an inlet portion to an outlet portion of the system; valve means for selectively directing the exhaust gas through one of the passages; filtering means for filtering the exhaust gas directed through the main flow passage; regeneration means positioned intermediate the valve means and the filtering means for selectively regenerating the filtering means by removing the particulate matter therefrom; an oxidation means positioned downstream of the filtering means in the main flow passage for further oxidizing the particulate matter; and a control means for controlling the flow of the exhaust gas, selectively activating the regeneration means upon sensing of a predetermined condition, and deactivating the regeneration means when the regenerating of the filtering means has been completed.

• Assignee: Cummins Engine Co., Inc., Columbus, IN (United States)
• Patent Number(s): A; US 5052178
• Application Number: PPN: US 7-390884
• OSTI ID: 5741979
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330603 -- Vehicle Design Factors-- Engine System
330705* -- Emission Control-- Particulates
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR FILTERS
AIR POLLUTION CONTROL
CONTROL
DESIGN
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FILTERS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT