Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1988-12-12
1990-03-06
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Fuel injection system
123 1A, 123575, 73116, 7386108, F02B 7512, F02D 4104, G01F 156
Patent
active
049056557
ABSTRACT:
A fuel injector assembly for an internal combustion engine of an automobile including an alcohol sensor is disclosed. The assembly comprises a hollow cylindrical fuel delivery pipe having nozzles formed on the circumferential side wall thereof. A pair of hollow cylindrical metallic plates having a plurality of radially extending throughholes are dispsed coaxially in the fuel delivery pipe to form a small gap therebetween, through which the fuel supplied from the fuel tank by a fuel bump flows before being injected from the valves of the nozzles into the intake manifold of the engine. The throughholes in the two metallic plates are axially displaced and some of the throughholes in the metallic plate of the larger diameter are axially and circumferentially aligned with the nozzles. The change of the capacitance of the capacitor formed by the pair of metallic plates and the fuel flowing therebetween is measured to determine the variation of the dielectric constant of the fuel. The alcohol content of the fuel mainly consisting of gasoline is computed from the dielectric constant thereof. Further, the amount of the fuel injected from the valves are controlled in accordance with the alcohol content.
REFERENCES:
patent: 4438749 (1984-03-01), Schwippert
patent: 4470300 (1984-09-01), Kobayashi
patent: 4480484 (1984-11-01), Ueyama
patent: 4484582 (1984-11-01), Rottenberg et al.
patent: 4568874 (1986-02-01), Kramer et al.
patent: 4594968 (1986-06-01), Degobert et al.
patent: 4706630 (1987-11-01), Wineland et al.
patent: 4770129 (1988-09-01), Miyata et al.
Mitsubishi Denki & Kabushiki Kaisha
Wolfe Willis R.
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