Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-08-31
1997-05-13
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123506, 239 88, 2395852, F02M 3704, F02M 4702
Patent
active
056282931
ABSTRACT:
An improved electronically-controlled fluid injector system comprises a fluid storage chamber and a direct-operated check. Pressurization of fluid in the storage chamber begins before the start of fluid injection. Fluid injection begins by hydraulically unbalancing the check. Fluid injection sharply ends by hydraulically balancing the check to allow a biasing device to close the check. The present invention provides improved control of several fluid injection parameters, including higher peak fluid injection capability and less fluid injection pressure drop at the end of injection, resulting in improved engine performance and lower emissions, noise, and wear.
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Cannon Howard N.
Gibson Dennis H.
Hefler Gregory W.
Shinogle Ronald D.
Sommars Mark F.
Becker Mark D.
Caterpillar Inc.
Moulis Thomas N.
Woloch Anthony N.
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