Fuel injector

Details Fuel injector Fuel injector

1986-09-08

1987-10-20

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combination igniting means and injector

239 87, F02M 4902

Patent

active

047006781

ABSTRACT:
An injector (10) for delivering fuel directly into an engine combustion chamber (11) in response to compression within the combustion chamber (11). The injector (10) has a housing (14) with an injector rod (22) slidably mounted within housing (14). Secured to the injector rod (22) is a primary piston (24), a metering spool (25), and a secondary piston (32). The metering spool (25) is located within a metering chamber (26) having a bypass chamber (50) in which is located two series of electrodes (60 and 62) which are connected to an electrical system which sequentially provides an electrical signal to the connector (56) as dictated by the needs of the engine. As the electrical signal is supplied to connector (56), an electro-rheological fluid (64) contained within the metering chamber (26) is converted from a liquid to a substantially solid condition, thereby limiting the travel of the metering spool (25) and the secondary piston (32). Thus, a predetermined, measured amount of fuel is delivered from the supply chamber (36) into the combustion chamber (11) of the engine. The device (10) is provided with a glow plug (68) for firing the mixture within the combustion chamber (11).

REFERENCES:
patent: 4247044 (1981-01-01), Smith
patent: 4394856 (1983-07-01), Smith et al.
patent: 4427151 (1984-01-01), Trenne

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