Air fuel control system for Stirling engine

Details Air fuel control system for Stirling engine Air fuel control system for Stirling engine

1978-09-18

1980-11-04

Myracle, Jerry W.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Unit of mass is a gas which is heated or cooled in one of a...

F02G 104

Patent

active

042312221

ABSTRACT:
An air/fuel control system (including apparatus and method for a Stirling engine is disclosed. A signal generated by deviation of the temperature of the heater head gas temperature from a set-point is used to control an air flow throttle valve. Variations in the air flow of the external combustion circuit is sensed by way of a vortex-shedding device which delivers a D.C. electrical signal. The signal is shaped and amplified and used to control operation of one or more fuel injectors which feed into a common outlet manifold leading to the fuel nozzle serving the external combustion circuit. The fuel injectors are solenoid operated, one sized to provide a fuel flow rate of 0.4-2.0 g/sec., and at least two others are sized to provide a combined fuel flow rate of 2-15 g/sec., but 180.degree. out of phase with each other. The series of injectors provide an effective fuel control range of 0.4-15 grams/sec. to achieve an air/fuel ratio range of 37.5 to 1.

REFERENCES:
patent: 2617478 (1952-11-01), Hildestad
patent: 3956892 (1976-05-01), Nystrom

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