Liquid butane fuel injection for internal combustion engines

Details Liquid butane fuel injection for internal combustion engines Liquid butane fuel injection for internal combustion engines

1990-09-04

1991-07-23

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Gaseous fuel and air mixer

123 1A, F02B 4300

Patent

active

050334441

ABSTRACT:
An engine powered by fuel having a boiling temperature less than ambient wherein the fuel is stored as a liquid and delivered in the liquid state to a fuel injection system. The fuel is sprayed into the intake port region of a cylinder head as liquid droplets which then vaporize. The fuel supplied to the injection system is maintained in the liquid state by a cooling system which maintains the liquid fuel below the boiling temperature. One cooling system includes a tube coiled around the injection system through which a refrigerant is circulated and cooled by a refrigeration system. A bleedoff conduit withdraws any excess fuel from the injection region and returns it to the fuel storage tank.

REFERENCES:
patent: 4492208 (1985-01-01), Lent
patent: 4522159 (1985-11-01), Engel et al.
patent: 4523548 (1985-06-01), Engel et al.
patent: 4528966 (1985-07-01), Lent et al.
patent: 4606319 (1986-08-01), Silva
patent: 4688537 (1987-08-01), Calkins et al.
patent: 4774909 (1988-10-01), Dolderer

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