Electronically controlled fluid injection system for an internal

Details Electronically controlled fluid injection system for an internal Electronically controlled fluid injection system for an internal

1980-02-04

1981-11-17

Myhre, Charles J.

Internal-combustion engines

Water and hydrocarbon

123 25R, 123 25L, 123 25M, 123 25K, F02B 4700, F02B 4702, F02B 4708

Patent

active

043004849

ABSTRACT:
A fluid injection system for an internal combustion engine such as a spark-ignition or compression-ignition engine in which an injection nozzle injects a finely divided spray of fluid, such as water or a water solution, into the engine in response to a flow of atomizing air. The nozzle is connected to a fluid supply reservoir and to the outlet line of an air-injection pump connected to and controlled by an electronic circuit that includes a pick-up coupled to the ignition system of the engine. The electronic circuit responds to spark plug firing rate, which is proportional to engine speed, and to the amplitude of the voltage across the spark plug gap, which is proportional to engine load, and varies, respectively, the pump stroke rate and the pump stroke length accordingly. As a result, the flow of atomizing air to the nozzle and therefore the rate and magnitude of water injection is responsive to engine speed and load.

REFERENCES:
patent: 2725858 (1955-12-01), Tivoli
patent: 3490422 (1970-01-01), Bullis
patent: 3500802 (1970-03-01), Long
patent: 3631843 (1972-01-01), Yeiser
patent: 3737681 (1973-06-01), Rothermel
patent: 3857543 (1974-12-01), McKeen
patent: 4051815 (1977-10-01), Coberly
patent: 4096829 (1978-06-01), Spears

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