Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-11-05
1977-01-25
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123198D, F02M 2506
Patent
active
040045595
ABSTRACT:
An alarm device for use in an exhaust gas recirculating system wherein part of exhaust gases from an internal combustion engine is introduced back into a suction system of the engine to thereby lower the combustion temperature of the engine, thus reducing the amount of nitric oxides contained in the exhaust gases. This alarm device is of the type which detects abnormal recirculating condition of recirculating exhaust gases to thereby warn of the abnormal operation of the exhaust gas recirculating system. The features of this alarm device are that the variation in flow rate of exhaust gases flowing through the exhaust gas recirculating passage communicating the exhaust gas system with a suction system is detected according to the pressure, whereby when the pressure thus detected deviates from the predetermined value, the abnormal-condition indicating device is driven to warn of the abnormal recirculation of exhaust gases.
REFERENCES:
patent: 3779222 (1973-12-01), Lorenz
patent: 3794006 (1974-02-01), Woodward
patent: 3877452 (1975-04-01), Nohira et al.
patent: 3881456 (1975-05-01), Nohira et al.
patent: 3924587 (1975-12-01), Murphy
patent: 3930221 (1975-12-01), Thing
Burns Wendell E.
Hitachi , Ltd.
Lazarus Ira S.
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