Particulate system for an internal combustion engine

Patent · Tue Jan 29 04:00:00 EST 1991

OSTI ID:6126661

Lopez-Crevillen, J M; Singh, S; Tuteja, A D

This patent describes an exhaust cleaner and burner system for use with the exhaust system of an internal combustion engine. It comprises: an exhaust conduit for receiving exhaust gas from the engine, having an inlet and an outlet; a diverter valve disposed at the outlet for selectively directing exhaust flow through a first, main branch when open and a second, bypass branch when closed; exhaust filter means having an inlet connected to the main branch and an outlet connected to the exhaust system; burner means having an outlet mounted upstream of the filter means and operable to raise the temperature of the filter means, the burner means comprising a burner supply conduit for supplying exhaust gas to the burner. The burner supply conduit having an inlet end connected to the exhaust conduit, an outlet end connected to the burner means and a metering orifice disposed within the burner supply conduit, between the inlet end and the outlet end; the system operable, during normal engine operation, to open the diverter valve and pass exhaust gas through the filter means, and operable, upon reaching a predetermined condition, to close the diverter valve and pass exhaust gas through the bypass branch and means for maintaining a predetermined pressure in the exhaust conduit to provide a substantially constant supply of exhaust gas to the burner means through the burner supply conduit; and wherein the burner means is operable to raise the temperature of the exhaust gas to a level sufficient to burn particulates accumulated on the filter thereby regenerating the filter.

• Assignee: General Motors Corp., Detroit, MI (USA)
• Patent Number(s): A; US 4987738
• Application Number: PPN: US 7-428387
• OSTI ID: 6126661
• Country of Publication: United States
• Language: English

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540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
BURNERS
CONTROL
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FILTERS
FILTRATION
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SEPARATION PROCESSES