Emission control apparatus for internal combustion engines with

Details Emission control apparatus for internal combustion engines with Emission control apparatus for internal combustion engines with

1976-12-21

1979-08-28

Jordan, Charles T.

Internal-combustion engines

Noncompression

F02B 300

Patent

active

041657195

ABSTRACT:
Emission control apparatus for internal combustion engine includes an exhaust composition sensor to sense the mixture ratio, a circuit for clamping the mixture ratio to a predetermined constant value to prevent the mixture from becoming too rich or too lean when a failure should occur in the control loop, for example, in the exhaust composition sensor fail and a circuit for interrupting the clamping circuit when the engine operating condition is such that the sensor is caused to produce low voltage signals although the sensor is functioning properly.

REFERENCES:
patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 3916848 (1975-11-01), Schmidt

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