Exhaust particle removing system for an internal combustion engi

Details Exhaust particle removing system for an internal combustion engi Exhaust particle removing system for an internal combustion engi

1984-09-18

1986-09-09

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

55283, 55DIG30, 60303, 60311, F01N 302

Patent

active

046101381

ABSTRACT:
A filter is disposed in the exhaust passage of an internal combustion engine in order to trap particles suspended in exhaust gas. A burner serves to burn off the particles deposited on the filter. Either the pressure in the exhaust passage at a point upstream of the filter or the pressure difference in the exhaust passage across the filter is selectively sensed. In place of sensing the pressure difference, the pressure in the exhaust passage at a point downstream of the filter may be sensed. The ratio between the upstream pressure and the pressure difference, or the ratio between the upstream pressure and downstream pressure is determined an as indication of the degree of clogging of the filter. The burner is operated on the basis of this ratio.

REFERENCES:
patent: 4281512 (1981-08-01), Mills
patent: 4450682 (1984-05-01), Sato
patent: 4492079 (1985-01-01), Takagi

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