Patent EP0889220A2 successfully refreshed from Google Patents.
EP0889220A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A fuel injecting device for an engine
Assignee: Toyota Motor Corp
•
Filing: 1998-06-30
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Granted: —
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Expires: 2018-06-30
Abstract
Abstract According to the present invention, there is provided a fuel injecting device for injecting fuel into a cylinder of an engine, comprising fuel injector for injecting a main fuel charge into the cylinder at a predetermined first timing, and the fuel injector injects additional fuel into the cylinder at a predetermined second timing which is different from the predetermined first timing. It is judged if an amount of fuel adhering to an inner wall of the cylinder is larger than a predetermined fuel amount when the fuel injector injects the additional fuel. An operation of the fuel injector to inject the additional fuel such that an amount of fuel adhering to the inner wall of the cylinder becomes smaller than the predetermined fuel amount when it is judged that an amount of fuel adhering to the inner wall of the cylinder is larger than the predetermined fuel amount.
Inventors
- 👤 Kazuya Kibe
- 👤 Masato Gotoh
- 👤 Tatsuji Mizuno
- 👤 Ichiro Sakata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 01:19
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30; F02D41/38; F02D41/40; F02D41/402; F02D41/403; F01; F01N; F01N3/00; F01N3/08; F01N3/0807; F01N3/0828; F01N3/0842; F02D21/00; F02D21/06; F02D21/08; F02D41/02; F02D41/04; F02D41/047; F02D41/3809; F02D2250/00; F02D2250/11; F02D41/0025; F02D41/0047; F02D41/005; F02D41/008; F02D41/405; F02M; F02M26/00; F02M26/02; F02M26/04; F02M26/05; F02M26/52; F02M26/55; F02M26/56; F02M26/57; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
151 words
A fuel injecting device for injecting fuel into
a cylinder of an engine, comprising: fuel injecting means for injecting a main
fuel charge into said cylinder at a predetermined first
timing, and said fuel injecting means injects additional
fuel into said cylinder at a predetermined second timing
which is different from said predetermined first timing; judging means for judging if an amount of
fuel adhering to an inner wall of said cylinder is larger
than a predetermined fuel amount when said fuel injecting
means injects said additional fuel; and control means for controlling an operation
of said fuel injecting means to inject said additional
fuel such that an amount of fuel adhering to said inner
wall of said cylinder becomes smaller than said
predetermined fuel amount when said judging means judges
that an amount of fuel adhering to said inner wall of
said cylinder is larger than said predetermined fuel
amount.
Claim 2
Dependent Claim
20 words
A fuel injecting device according to claim 1,
wherein said predetermined second timing is earlier than
said predetermined first timing.
Claim 3
Dependent Claim
40 words
A fuel injecting device according to claim 1,
wherein said predetermined second timing is later than
said predetermined first timing, and a catalyst for
purifying exhaust gas discharged from said cylinder with
the fuel is provided in an exhaust passage.
Claim 4
Dependent Claim
21 words
A fuel injecting device according to claim 3,
wherein said additional fuel is burned to increase the
temperature of said catalyst.
Claim 5
Dependent Claim
27 words
A fuel injecting device according to claim 3,
wherein said catalyst purifies the exhaust gas with said
additional fuel when said exhaust gas includes excess
oxygen therein.
Claim 6
Dependent Claim
60 words
A fuel injecting device according to claim 1,
wherein said judging means judges that an amount of fuel
adhering to said inner wall of said cylinder is larger
than said predetermined fuel amount when said judging
means judges that an amount of the fuel evaporating from
said inner wall of said cylinder is smaller than a
predetermined fuel evaporating amount.
Claim 7
Dependent Claim
58 words
A fuel injecting device according to claim 6,
wherein said judging means judges that an amount of the
fuel evaporating from said inner wall of said cylinder is
smaller than said predetermined fuel evaporating amount
when said judging means judges that the temperature of
said inner wall of said cylinder is lower than a
predetermined inner wall temperature.
Claim 8
Dependent Claim
57 words
A fuel injecting device according to claim 6,
wherein said judging means judges that an amount of the
fuel evaporating from said inner wall of said cylinder is
smaller than said predetermined fuel evaporating amount
when said judging means judges that an amount of said
main fuel charge is smaller than a predetermined main
fuel charge amount.
Claim 9
Dependent Claim
61 words
A fuel injecting device according to claim 1,
wherein said judging means judges that an amount of fuel
adhering to said inner wall of said cylinder is larger
than said predetermined fuel amount when said judging
means judges that an amount of the fuel evaporating when
said additional fuel flows into said cylinder is smaller
than a predetermined fuel evaporating amount.
Claim 10
Dependent Claim
58 words
A fuel injecting device according to claim 9,
wherein said judging means judges that an amount of the
fuel evaporating when said additional fuel flows into
said cylinder is smaller than said predetermined fuel
evaporating amount when said judging means judges that
the pressure of the injection of said additional fuel is
lower than a predetermined injection pressure.
Claim 11
Dependent Claim
73 words
A fuel injecting device according to claim 9,
wherein said judging means judges that an amount of the
fuel evaporating, when said additional fuel flows into
said cylinder, is smaller than said predetermined fuel
evaporating amount when said judging means judges that
the pressure of the injection of said additional fuel is
higher than a predetermined injection pressure and the
amount of said additional fuel is larger than a
predetermined additional fuel amount.
Claim 12
Dependent Claim
57 words
A fuel injecting device according to claim 9,
wherein said judging means judges that an amount of the
fuel evaporating, when said additional fuel flows into
said cylinder, is smaller than said predetermined fuel
evaporating amount when said judging means judges that
the temperature of an air in said cylinder is lower than
a predetermined air temperature.
Claim 13
Dependent Claim
53 words
A fuel injecting device according to claim 12,
wherein said judging means judges that the temperature of
said air in said cylinder is lower than said
predetermined air temperature when said judging means
judges that the temperature of an intake air introduced
into said cylinder is lower than a predetermined intake
air temperature.
Claim 14
Dependent Claim
53 words
A fuel injecting device according to claim 12,
wherein said judging means judges that the temperature of
said air in said cylinder is lower than said
predetermined air temperature when said judging means
judges that the temperature of an exhaust gas discharged
from said cylinder is lower than a predetermined exhaust
gas temperature.
Claim 15
Dependent Claim
50 words
A fuel injecting device according to claim 12,
wherein said judging means judges that the temperature of
said air in said cylinder is lower than said
predetermined air temperature when said judging means
judges that an interval between said predetermined first
and second timings is longer than a predetermined
interval.
Claim 16
Dependent Claim
53 words
A fuel injecting device according to claim 9,
wherein said judging means judges that an amount of the
fuel evaporating, when said additional fuel flows into
said cylinder, is smaller than said predetermined fuel
evaporating amount when said judging means judges that
the pressure in said cylinder is higher than a
predetermined pressure.
Claim 17
Dependent Claim
82 words
A fuel injecting device according to claim 1,
wherein a piston is inserted in said cylinder, and said
judging means judges that an amount of fuel adhering to
said inner wall of said cylinder is larger than said
predetermined fuel amount when said judging means judges
that a ratio of an area of a top face of said piston
relative to an area of said inner wall within range of
the injection of said additional fuel is smaller than a
predetermined ratio.
Claim 18
Dependent Claim
48 words
A fuel injecting device according to claim 17,
wherein said ratio of said area of said top face of said
piston relative to said area of said inner wall becomes
large as said piston becomes close to a top dead center
of a compression stroke of said engine.
Claim 19
Dependent Claim
53 words
A fuel injecting device according to claim 1,
wherein said judging means judges that an amount of fuel
adhering to said inner wall of said cylinder is larger
than said predetermined fuel amount when said judging
means judges that an amount of said additional fuel is
larger than a predetermined additional fuel amount.
Claim 20
Dependent Claim
57 words
A fuel injecting device according to claim 1,
wherein said control means increases an amount of the
fuel evaporating when said fuel flows into said cylinder
to a predetermined evaporating fuel amount when said
judging means judges that an amount of fuel adhering to
said inner wall of said cylinder is larger than said
predetermined fuel amount.
Claim 21
Dependent Claim
48 words
A fuel injecting device according to claim 20,
wherein said control means increases an amount of the
fuel evaporating when said fuel flows into said cylinder
to said predetermined evaporating fuel amount by
controlling the pressure of the injection of said
additional fuel at said predetermined second timing.
Claim 22
Dependent Claim
82 words
A fuel injecting device according to claim 1,
wherein a piston is inserted in said cylinder, said
control means increases a ratio of an area of a top face
of said piston relative to an area of said inner wall of
said cylinder within range of the injection of said
additional fuel to a predetermined ratio when said
judging means judges that an amount of the fuel adhering
to said inner wall of said cylinder is larger than said
predetermined fuel amount.
Claim 23
Dependent Claim
58 words
A fuel injecting device according to claim 22,
wherein said control means increases said ratio of said
area of said top face of said piston relative to said
area of said inner wall of said cylinder by injecting
said additional fuel when said piston becomes close to a
top dead center of a compression stroke of said engine.
Claim 24
Dependent Claim
64 words
A fuel injecting device according to claim 22,
wherein said control means directs a direction of said
additional fuel toward a center of said top face of said
piston when said judging means judges that said ratio of
said area of said top face of said piston relative to
said area of said inner wall of said cylinder becomes
smaller than said predetermined ratio.
Claim 25
Dependent Claim
44 words
A fuel injecting device according to claim 1,
wherein said control means decreases an amount of said
additional fuel when said judging means judges that an
amount of fuel adhering to said inner wall of said
cylinder is larger than said predetermined fuel amount.
Claim 26
Dependent Claim
111 words
A fuel injecting device according to claim 25,
wherein said engine comprises a plurality of cylinders,
an exhaust gas recirculating passage for recirculating an
exhaust gas from at least one of said cylinders into an
intake passage of said engine, and a shutting valve for
shutting said exhaust gas recirculating passage, and when
said control means judges that an amount of the fuel
adhering to said inner wall of said cylinder is larger
than said predetermined fuel amount, said control means
closes said shutting valve and controls the operation of
said fuel injecting means to inject a part of said
additional of fuel at said predetermined second timing of
each cylinder.
Claim 27
Dependent Claim
42 words
A fuel injecting device according to claim 1,
wherein said control means stops injecting said
additional fuel when said judging means judges that an
amount of fuel adhering to said inner wall of said
cylinder is larger than said predetermined fuel amount.
References Cited (Backward Citations)
No citation records indexed.
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