F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
123/12, 123/42,
F02P 5/00 (2006.01) F02P 5/10 (2006.01)
Patent
CA 1050840
ABSTRACT OF THE DISCLOSURE An internal combustion engine for automotive vehicles is started and operated with decreased fuel enrichment when the engine is cold by delaying spark retard as the vehicle is accelerated to save fuel and reduce accumulated pollutants collected during warm up. A valve is provided between the carburetor spark port and the distributor vacuum advance cylinder to permit unrestricted airflow from the vacuum advance cylinder to the spark port at all temperatures and to restrict airflow from the spark port to the vacuum advance cylinder when the engine operating temperature is below a predetermined temperature. When the engine operating temperature attains the predetermined temperature airflow is unrestricted in both directions and the vacuum advance operates in a normal manner.
249785
Ludwig George
Walters William J.
LandOfFree
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