F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
123/12
F02P 5/10 (2006.01)
Patent
CA 1200725
ABSTRACT VACUUM OPERATED APPARATUS FOR CONTROLLING THE IGNITION TIMING OF AN ENGINE Vacuum operated apparatus for controlling the ignition timing of an engine, which apparatus comprises valve means and first, second, third and fourth conduit means, the valve means comprising a first chamber, first and second ports in the first chamber, first obturator means for opening and closing the second port, a second chamber, third and fourth ports in the second chamber, and second obturator means for opening and closing the fourth port, the first conduit means being for connecting the first port to an engine inlet manifold, the third conduit means being for connecting the third port to an engine carburettor, and the second and fourth conduit means being for connecting the second and fourth ports respectively to an engine distributor, and the apparatus being such that in use the valve means receives first vacuum forces from the inlet manifold via the first conduit means and second vacuum forces from the carburettor via the third conduit means, the valve means being operative to transmit the greater of the first and the second vacuum forces via the second and the fourth ports and the second and fourth conduit means to the engine distributor so that the engine distributor always receives the optimum vacuum force for causing the optimum adjustment of the engine distributor to give the optimum engine ignition timing during engine operating conditions.
475970
Borden Ladner Gervais Llp
Szloboda David T.
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