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Abstract

A diesel engine exhaust system is provided with a particulate trap for collecting the products of incomplete combustion during the engine power cycle. A sensing mechanism including an electrode downstream of the trap and a signal generating circuit provides a positive indication of occurrence of regeneration of the trap. Charged particles generated during regeneration induce a charge of the electrode, that charge activates the signal generating circuit and it, in turn, produces an indication external of the exhaust system that trap regeneration is occurring. That indication can be in the operator’s compartment.

Patent Number

4,939,466

Assignee

Board of Control of Michigan Technological University, Houghton, Mich.

Application Number

336,201

Date Filed

4-10-1989

Certificate of Correction

No

Issue Date

7-3-1990

Disciplines

Automotive Engineering | Engineering

Method and apparatus for sensing the regeneration of a diesel engine particulate trap

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