Exhaust gas purification system for internal combustion engines

Details Exhaust gas purification system for internal combustion engines Exhaust gas purification system for internal combustion engines

1975-08-15

1977-07-26

Croyle, Carlton R.

Power plants

Internal combustion engine with treatment or handling of...

Having sensor or indicator of malfunction, unsafeness, or...

60293, 60312, F01N 300, F01N 700

Patent

active

040374076

ABSTRACT:
An internal combustion gasoline engine comprises a determined region which is so formed in an exhaust passage from an exhaust valve to a thermal reactor as to pass exhaust gases therethrough in their discharging order, a secondary air passage with a check valve means communicating with the exhaust port near the exhaust valve, and means for maintaining the temperature of exhaust gases over the trigger temperature of the thermal reactor. The exhaust passage has a volume equal to or more than the displacement of the engine and less than four times the displacement volume and has a cross-sectional area less than three times the opening area of the exhaust valve.

REFERENCES:
patent: 3172251 (1965-03-01), Johnson
patent: 3413803 (1968-12-01), Rosenlund et al.
patent: 3445195 (1969-05-01), Benteler et al.
patent: 3468124 (1969-09-01), Hraboweckyj
patent: 3662541 (1972-05-01), Sawada et al.
patent: 3703082 (1972-11-01), Santiago et al.
patent: 3788070 (1974-01-01), Camarasa et al.
patent: 3836338 (1974-09-01), Arnold
patent: 3904374 (1975-09-01), Rosenlund
patent: 3906722 (1975-09-01), Garcea
patent: 3946558 (1976-03-01), Beekhuis

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