F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 49/00 (2006.01) F02M 59/10 (2006.01) F02M 59/14 (2006.01) F02M 59/16 (2006.01) F02M 63/00 (2006.01)
Patent
CA 2120058
Abstract of the Disclosure A two-stage fuel delivery system (10) for a two-stroke internal combustion engine that includes a first stage pump (12) having a first pump chamber (16) with an inlet (20) coupled to a fuel source (21), an outlet (22) and a diaphragm (14) responsive to pressure pulsations from the engine crankcase for reciprocation within the chamber. A second stage pump (24) includes a second pump chamber (28) having an inlet (30) coupled to the outlet of the first chamber, an outlet (32) for delivering fuel under pressure to engine fuel injectors (34) or the like, a permanent magnet (46) for mounting on the flywheel (48) of the engine for rotation in synchronism with operation of the engine, and a diaphragm (36) in the second chamber operatively coupled to the magnet for reciprocation with the second chamber responsive to rotation of the magnet to pump fuel from the inlet to the outlet of the second chamber. The two-stage pump achieve fuel delivery pressures on the order of 25 to 30 psi or more employing energy from reciprocation of the engine and without requiring control electronics or electrical energy input.
Marks & Clerk
Orbital Fluid Technologies Inc.
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