Engine control with function to eliminate minute particles in ex

Details Engine control with function to eliminate minute particles in ex Engine control with function to eliminate minute particles in ex

1985-11-12

1987-08-11

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60285, F01N 302

Patent

active

046852905

ABSTRACT:
In order to provide a function of eliminating minute particles in exhaust gas to a control apparatus of an internal combustion engine, a filter temperature sensor, inserted in an exhaust path, for measuring a temperature of a filter for trapping minute particles of an exhaust gas, an electric heater for removing the minute particles deposited on the filter by combustion, and a control circuit are provided. In the control circuit, filter recovery is detected, a preheating instruction for raising the filter temperature is generated in accordance with the detection result, completion of the preheating of the filter is decided, an instruction for changing an injection pattern of the fuel injection valve for preheating the filter is generated, and an ON signal is supplied to the electric heater.

REFERENCES:
patent: 4211075 (1980-07-01), Ludecke
patent: 4361028 (1982-11-01), Kamiya et al.
patent: 4450681 (1984-05-01), Sato et al.
patent: 4450682 (1984-05-01), Sato
patent: 4452040 (1984-06-01), Kobashi
patent: 4509327 (1985-04-01), Enga

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