Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1991-10-11
1992-06-16
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
123381, 123549, 239132, F02M 5502, F02M 1500, B05B 124
Patent
active
051217309
ABSTRACT:
Herein are disclosed methods of conditioning fluid, such as damping fluid, in an electronically-controlled unit injector in order to facilitate quick starting of an engine. Fluid normally used to dampen the motion of an electrical actuator assembly of the unit injector can remain in the actuator assembly after the engine is stopped. If too much fluid remains and cools off in the actuator assembly, quick starting of a cold engine may be hindered. Each of the above methods expels and/or heats up at least a portion of the remaining fluid in the actuator assembly while the engine is at rest and thereby enables quicker response of the actuator assembly when the engine is started. Such quicker response improves the fuel injection delivery capability and timing accuracy of the unit injector during engine startup.
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SAE Paper No. 910252, Development of New Electronically Controlled Fuel Injection System ECD-U2 for Diesel Engines, published 1991, by Miyaki et al.
Ausman Thomas G.
Ertel John G.
Flinn Michael A.
Argenbright Tony M.
Caterpillar Inc.
Moulis Thomas N.
Woloch Anthony N.
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