Internal-combustion engines – Starting device – For airplane
Patent
1977-09-20
1979-06-05
Myhre, Charles J.
Internal-combustion engines
Starting device
For airplane
123 32AE, 123 33C, 123139AW, 123179G, F02N 1700, F02B 300
Patent
active
041570847
ABSTRACT:
An air and fuel mixing device incorporates a Venturi throat or other mixing means for feeding a highly combustible mixture of fuel and pressurized air to an electrical fuel injector valve or directly to the intake manifold in a system for starting an internal combustion engine. The system replaces the choke in a conventional electrical ignition type internal combustion engine. The fuel injector valve is controlled to inject a limited quantity of a highly combustible atomized air-fuel mixture into the engine intake manifold during engine startup. Startup is achieved with minimum fuel waste and produces a minimum of exhaust pollutants. A modified form of the invention is shown as employed in a fuel injection type internal combustion engine system wherein high pressure air-fuel mixture is fed to the fuel injectors solely through use of a conventional low pressure fuel pump and air supply. The injectors operate to discharge a highly volatile, combustible, air-fuel mixture under pressure, instead of raw fuel thus significantly increasing combustion efficiency during engine startup to minimize fuel waste and reduce deleterious exhaust emissions. Another modified form of the invention is shown wherein the system is employed to feed a mixture of fuel and pressurized air to the engine intake manifold in response to an acceleration command from the engine throttle control during normal engine operation. This eliminates the need for the notoriously troublesome carburetor accelerator pump now in conventional use.
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Myhre Charles J.
Reynolds David D.
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