Engine parameter modulation

Details Engine parameter modulation Engine parameter modulation

1977-04-06

1979-07-24

Croyle, Carlton R.

Internal-combustion engines

Noncompression

123119EC, F02B 3300, F02M 712

Patent

active

041619269

ABSTRACT:
Method and apparatus for modulating engine parameter actuators at speeds and variety of waveforms suited for the detection and elimination of engine performance degradation due to perturbations caused by environmental changes as well as by wear in use, structural and other design limitations. An actuator is made responsive to gas pressure which is modulated by forcing gas flow through a chamber connected to the actuator. The flow enters the chamber through a variable orifice comprising a solid block with bores facing corresponding bores in a drum rotating at a speed synchronized to the engine speed. The modulation of pressure delivered, as a result, to the actuator may be controlled, by computer or manually, by controlling the relative phase between the drum and engine rotations and the pressure of gas supplying the flow through the variable orifice and the chamber.

REFERENCES:
patent: 3123015 (1964-03-01), Linklater
patent: 3768259 (1973-10-01), Carnahan et al.
patent: 3921612 (1975-11-01), Aono
patent: 3945350 (1976-03-01), Ford
patent: 3949551 (1976-04-01), Eichter et al.
patent: 4027637 (1977-06-01), Aono
patent: 4046118 (1977-09-01), Aono
Schweitzer et al., "Electronic Optimizer Control for I.C. Engine," Feb. 1975, SAE Publ. No. SP-393, pp. 155-181.

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