Exhaust-gas recycling device for an internal-combustion engine

Details Exhaust-gas recycling device for an internal-combustion engine Exhaust-gas recycling device for an internal-combustion engine

1990-10-18

1991-11-26

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02B 4708, F02D 2108, F02M 2507

Patent

active

050674706

ABSTRACT:
In an exhaust-gas recycling device for internal-combustion engines, especially diesel engines, in which the exhaust-gas recycling quantity is controlled as a function of the engine running via an exhaust-gas recycling valve mounted in the exhaust-gas recycling line, it is to be possible to regulate the exhaust-gas recycling flow quantity independently of flow resistances changing in the fresh-gas intake and exhaust-gas lines. For this purpose, changes of flow resistance in the fresh-gas intake and exhaust-gas lines are fed as additional pressure control signals to the exhaust-recycling valve. A change of flow resistance in the exhaust-gas line can occur particularly as a result of a soot burn-off filter which is installed there an on which the soot is burnt off at irregular time intervals.

REFERENCES:
patent: 3756210 (1973-09-01), Kuehl
patent: 4044739 (1977-08-01), Miura et al.
patent: 4180034 (1979-12-01), Vogelsberg
patent: 4196707 (1980-04-01), Stoltman
patent: 4312319 (1982-01-01), Brakebill

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