Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1984-10-26
1985-12-31
Lazarus, Ronald H.
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
123573, 123574, F02M 2506
Patent
active
045614091
ABSTRACT:
A smog control system for automotive internal combustion engines has a self-cleaning smog control filter including a movable coil spring filter inside a housing. The filter is connected to the engine crankcase in combination with an air filter connected to the carburetor induction system to recycle all gaseous fuels from the engine crankcase through the filter and back to the engine to prevent non-combustible matter from entering the exhaust manifold of the engine and being discharged to the atmosphere. The device includes means for applying tension to the top of the coil spring filter to maintain a preset filtering space between adjacent filter coils during the life of the filter. An inertial lever arm connected to the coil spring filter senses acceleration and deceleration of the vehicle to rotate the filter about its axis for producing a self-cleaning action. In addition, this rotation of the coil spring filter during vehicle motion also is limited in opposite directions by internal stops within the filter housing which limit rotation of the coil spring filter independently of the positional setting of the inertial arm that senses vehicle motion.
REFERENCES:
patent: 2198790 (1940-04-01), Roddewig
patent: 3494339 (1970-02-01), Fernandez
patent: 4291660 (1981-09-01), Molyneaux
patent: 4373499 (1983-02-01), Bendig
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