Electronic carburetion system for low exhaust emissions of inter

Details Electronic carburetion system for low exhaust emissions of inter Electronic carburetion system for low exhaust emissions of inter

1976-09-17

1977-09-27

Cox, Ronald B.

Combustion

Timer, programmer, retarder or condition responsive control

By condition of burner feed or feed means

123 32EA, 13710119, F02B 300

Patent

active

040508781

ABSTRACT:
An electronic fuel injection system for maintaining absolute control over the air to fuel ratio flowing to the combustion chambers of an internal combustion engine. The system includes means for measuring the air flow rate to the engine. The flow rate measurement is converted into a proportional electrical signal which flows to a signal summing unit.
The fuel flow rate from a fuel pump is controlled by a signal recieved from the signal summing unit, and provides a controlled fuel flow to the engine which is proportional to the air flow. Means associated with the fuel pump measures the exact flow rate therefrom and converts the measurement into another proportional electrical signal which is fed back to the summing unit to thereby form a closed loop circuit. The summing unit compares the first signal with the second signal and changes the fuel flow rate the required amount to maintain the ratio thereof at a predetermined value.
There is optionally included within the system a warm-up enrichment, acceleration enrichment, and temperature and barometric pressure conversion means, all of which are connected back to the summing unit so as to provide extremely close control over all parameters affecting the air to fuel ratio.

REFERENCES:
patent: 2493587 (1950-01-01), Lee
patent: 3036585 (1962-05-01), Shawhan
patent: 3128603 (1964-04-01), Haigh
patent: 3241597 (1966-03-01), Juzi
patent: 3470858 (1969-10-01), Mycroft
patent: 3592574 (1971-07-01), Zenkner

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