US 2006/0213482 A1Published application

Control apparatus for internal combustion engine

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsNobuyuki Shibagaki, Zenichiro Mashiki

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Abstract

An engine ECU executes a program including the steps of: determining presence of abnormality in a high-pressure fuel system; when abnormality is sensed in the high-pressure fuel system, and not in an in-cylinder injector, injecting fuel from the in-cylinder injector at the feed pressure; selecting criteria (1) that is the restriction standard for a more gentle output restriction of the engine; when abnormality is sensed in the high-pressure fuel system and in the in-cylinder injector, ceasing the in-cylinder injector; selecting criteria (2) that is the restriction standard for a stricter output restriction of the engine; increasing the VVT overlap; retarding the ignition timing; and restricting the throttle opening according to the selected criteria.

Claims36

Dependent claims

A control apparatus for an internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder, a second fuel injection mechanism injecting fuel into an intake manifold, a first fuel supply mechanism supplying fuel to said first fuel injection mechanism, and a second fuel supply mechanism supplying fuel to said first fuel injection mechanism and said second fuel injection mechanism, said control apparatus comprising:

a control unit controlling said first and second fuel injection mechanisms such that said first and second fuel injection mechanisms partake in fuel injection, including a state of injection from one of said first and second fuel injection mechanisms being ceased,
a first abnormality determination unit determining presence of abnormality in said first fuel supply mechanism, and
a second abnormality determination unit determining presence of abnormality in said first fuel injection mechanism,
wherein said control unit effects control such that fuel is injected from at least said first fuel injection mechanism using said second fuel supply mechanism when said first abnormality determination unit determines abnormality in said first fuel supply mechanism and said second abnormality determination unit does not determine presence of abnormality in said first fuel injection mechanism.

1 more element

A control apparatus for an internal combustion engine including first fuel injection means for injecting fuel into a cylinder, second fuel injection means for injecting fuel into an intake manifold, first fuel supply means for supplying fuel to said first fuel injection means, and second fuel supply means for supplying fuel to said first fuel injection means and said second fuel injection means, said control apparatus comprising:

control means for controlling said first and second fuel injection means such that said first and second fuel injection means partake in fuel injection, including a state of injection from one of said first and second fuel injection means being ceased,
first abnormality determination means for determining presence of abnormality in said first fuel supply means, and
second abnormality determination means for determining presence of abnormality in said first fuel injection means,
wherein said control means effects control such that fuel is injected from at least said first fuel injection means using said second fuel supply means when said first abnormality determination means determines abnormality in said first fuel supply means and said second abnormality determination means does not determine presence of abnormality in said first fuel injection means.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 11/262,734Filed 1 Nov 2005
Priority: JP 2004-3191152 Nov 2004
Published: 28 Sep 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

F02M 63/029
Having more than one common rail: per cylinder bank, e.g. storing different fuels or fuels at different pressure levels per cylinder bank
F02D 41/221
Safety or indicating devices for abnormal conditions: relating to the failure of actuators or electrically driven elements
F02D 41/3094
Controlling fuel injection: the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the…
F02M 63/0215
For cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel…:…