Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1998-05-04
2000-05-16
Yuen, Henry C.
Internal-combustion engines
Charge forming device
Fuel injection system
123480, 123 9016, F02D 4100
Patent
active
060622016
ABSTRACT:
A fuel injection control system for an engine enhances efficiency for charging suctioned air into a cylinder stabilizes a fuel combustion state. An engine intake pipe is provided with an air-assisted injector. Fuel injected by the injector flows into a combustion chamber within the cylinder via an intake valve. An ECU controls the injector drive so that injected fuel flows into the cylinder about 1/3 of the time at the beginning of the valve opening period. This arrangement allows a large amount of fuel supplied into the cylinder to be vaporized quickly and completely before the intake value is closed. At this time, because temperature of air drops due to heat of vaporization of the fuel, weight (density) of air suctioned into the cylinder per unit volume increases, thus enhancing the charging efficiency of suctioned air.
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Isobe Daiji
Isomura Sigenori
Nozawa Masaei
Sawada Yukio
Denso Corporation
Vo Hieu T.
Yuen Henry C.
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