Fuel injection economizer

Details Fuel injection economizer Fuel injection economizer

1993-11-23

1994-06-14

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123445, 123452, F02D 4114

Patent

active

053200810

ABSTRACT:
To improve combustion efficiency of gasoline engines having fuel injection responsive to, among other inputs, an exhaust sensor, fuel is introduced into the intake manifold in a constant stream. The fuel is taken from a return line returning excess fuel from the fuel injection system back to the fuel tank. This fuel is fed into a vacuum conduit in communication with the intake manifold, the vacuum conduit preferably being a fuel cannister purge line, or a positive crankcase ventilation line. Fuel vaporizes due to being subjected to high vacuum over a long path of travel. As the proportion of fuel introduced into the engine as a vapor increases, and reliance upon fuel which is merely atomized by the fuel injection system decreases, combustion efficiency is improved.

REFERENCES:
patent: 3890946 (1975-06-01), Wahl
patent: 3960118 (1976-06-01), Konomi et al.
patent: 4088100 (1978-05-01), Tokura et al.
patent: 4169441 (1979-10-01), Hirano et al.

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