F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/34
F02M 1/16 (2006.01) F02B 61/04 (2006.01) F02M 3/12 (2006.01) F02M 69/10 (2006.01) F02B 75/02 (2006.01)
Patent
CA 1221589
ABSTRACT OF DISCLOSURE In order to permit delivery of a first fuel under low speed conditions directly to the transfer passage adjacent the intake port so as to reduce to possibility of fuel accumulation in the crankcase and in order to provide a second more volatile fuel for priming, there is diselosed herein an internal combustion engine comprising a cylinder extending from a crankcase and having an inlet port, a transfer passage located between the crankcase and the cylinder inlet port, a fuel pump adapted to communicate with a source of the first fuel, a carburetor having an air induction passage communicating with the crankcase and including a venturi and a throttle valve downstream of the venturi, which carburetor also includea a float bowl communicating with the fuel pump and a high speed nozzle communicating between the float bowl and the venturi, a low speed fuel nozzle communicating with the transfer passage adjacent the inlet port, a fuel line communicating between the float bowl and the low speed nozzle, a reservoir for a volatile primer fuel, and a manually operable primer fuel pump communicating with the reservior and with the air induction passage downstream of the throttle valve.
427550
Haman David F.
Needham Dale M.
Outboard Marine Corporation
Smart & Biggar
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