Diesel engine exhaust particulate filter with intake throttling incineration control

Patent · Tue Jul 08 00:00:00 EDT 1980

OSTI ID:5077049

Ludecke, O; Rosebrock, T

A description is given of a diesel engine exhaust filter and particulate incineration system in combination with a diesel engine having a normally unthrottled air induction system for admitting combustion air to the engine and an exhaust system for carrying off spent combustion products exhausted from the engine, said filter and incineration system comprising: a combustion resistant filter disposed in the exhaust system and operative to collect and retain portions of the largely carbonaceous particulate matter contained in the engine exhaust products, said fiber being capable of withstanding without substantial damage internal temperatures sufficient to burn the collected particulate matter, a throttle in the indication system and operable to restrict air flow into the engine to reduce the admittance of excess combustion air and thereby increase engine exhaust gas temperature, and means to actuate said throttle periodically during engine operation to an air flow restricting burn mode capable of raising the particulates in said filter to their combustion temperature under certain engine operating conditions and to maintain said throttle mode for an interval adequate to burn retained particulates in the filter.

• Assignee: General Motors Corp
• Patent Number(s): US 4211075
• OSTI ID: 5077049
• Resource Relation: Patent File Date: Filed date 19 Oct 1978
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
EXHAUST GASES
AIR FILTERS
POLLUTION CONTROL EQUIPMENT
DESIGN
COMBUSTION
EXHAUST SYSTEMS
VALVES
CHEMICAL REACTIONS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FILTERS
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OXIDATION
THERMOCHEMICAL PROCESSES
WASTES
330102* - Internal Combustion Engines- Diesel
330705 - Emission Control- Particulates