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

1986-03-19

1988-07-12

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60278, F01N 302

Patent

active

047561556

ABSTRACT:
A filter traps particles in exhaust from an engine. When the degree of clogging of the filter is unacceptable, the flow of intake air into the engine is throttled to increase the temperature of exhaust from the engine and thereby to burn off the particles trapped by the filter. During throttling of the intake air flow, the pressure of the intake air may be adjusted in accordance with an engine operating condition. An arrangement for finely adjusting the degree of throttling of the intake air may be added. In cases where the exhaust is recirculated through the engine, the rate of the exhaust recirculation is reduced when the intake air flow is throttled to burn off the trapped particles.

REFERENCES:
patent: 4211075 (1980-07-01), Ludecke
patent: 4467601 (1984-08-01), Watanabe

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