Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent
1980-05-27
1982-10-26
Feinberg, Craig R.
Internal-combustion engines
Valve
Valve head cooperates with manifold
123188AF, 123306, F01L 306
Patent
active
043556043
ABSTRACT:
A 360.degree. shrouded intake valve for use with an internal combustion engine having an intake valve located between a charge induction passage and a combustion chamber of the engine. The shroud is in the form of a collar secured to the intake valve face intermediate the valve stem and valve head portions. The shroud is formed with a plurality of ports extending therethrough to provide a controlled flow field of the air-fuel mixture charge in the combustion chamber during the induction stroke of the intake valve. Thus, the charge enters the combustion chamber divided into a plurality of jet-like flows to create turbulence inside the combustion chamber thereby increasing the flame speed and the combustion rate and shortening the duration of the flame propagation during the combustion process yielding less cycle-to-cycle variation. As a result, a more rapid and complete combustion of the charge is achieved upon ignition for improving the engine thermal efficiency. Furthermore a leaner air-fuel mixture may be used and there is a reduction in the amount of pollutant.
REFERENCES:
patent: 1471955 (1923-10-01), Grieve
patent: 1624850 (1927-04-01), Steele
patent: 2740392 (1956-04-01), Hollingsworth
patent: 3757757 (1973-09-01), Bastenhof
Feinberg Craig R.
Wolfe W. R.
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