Internal-combustion engines – Charge forming device – Diverse fuel supply
Patent
1989-08-16
1990-06-26
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Diverse fuel supply
123179L, 123180T, 123497, 123499, F02B 1500
Patent
active
049362801
ABSTRACT:
There is disclosed an electronic dual-fuel injection system for an internal combustion engine having a cylinder block with driving cylinders. The system has an intake manifold which is connected to the driving cylinders to feed fuel mixtures to the cylinders and an air supply assembly including a shuttle-valve body connected to the manifold for feeding air into it. A high grade fuel supply assembly, which includes an injector mounted on the output section of the air supply assembly, serves for feeding high grade fuel to the manifold. A similar but low grade fuel assembly, which includes a plurality of injectors each of which is mounted on the manifold, serves for feeding low grade fuel to one of the driving cylinders. The injection system also includes a computer, connected to the two fuel supply assemblies, and temperature sensors connected to the computer and to the cylinder block to measure its temperature. The computer is programmed first to cause actuation of the high grade fuel injector for starting and warming the engine up to a predetermined temperature as measured by the temperature sensor and corresponding to the combustion temperature of the low grade fuel. It is also programmed to cause actuation of the low grade fuel injectors to supply low grade fuel to the cylinders after the combustion temperature has been reached and, thereafter, cut-off the high grade fuel supply system.
REFERENCES:
patent: 2094662 (1937-10-01), Maniscalco
patent: 2128006 (1938-08-01), Maniscalco
patent: 2796056 (1957-06-01), Perkins
patent: 4085720 (1978-04-01), Etoh
patent: 4421087 (1983-12-01), Schuurman
patent: 4499885 (1985-02-01), Weissenbach
patent: 4499887 (1985-02-01), Billingsley et al.
Cross E. Rollins
Greigg Edwin E.
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