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EP0621402A1
Expired / Lapsed
EP
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Apparatus and method of fuel injection and ignition of internal combustion engine
Assignee: Hitachi Ltd
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Filing: 1994-04-19
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Granted: —
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Expires: 2014-04-19
Abstract
Abstract An injection port of a fuel injection valve (2) is opened in the combustion chamber (21), an ignition source (3) is provided in the vicinity of the injection port, a fuel-air mixture is ignited when fuel is injected from the fuel injection valve (2), energy of fuel jet flow is used so that produced flame may be carried on the fuel jet flow, thereby to rise penetration force, and the flame is dispersed in the combustion chamber (21).
Inventors
- 👤 Toshiharu Nogi
- 👤 Yoshishige Ohyama
- 👤 Mamoru Fujieda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 11:12
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/108; F02B19/1085; F02B1/00; F02B1/02; F02B1/08; F02B1/10; F02B19/12; F02B23/00; F02B23/08; F02B23/10; F02B23/101; F02B31/00; F02B31/08; F02B31/085; F02B41/00; F02M; F02M57/00; F02M57/06; F02B2023/102; F02B2023/103; F02B2023/106; F02B2023/108; F02B75/00; F02B75/12; F02B2075/125; F02B2275/00; F02B2275/48; F02F; F02F1/00; F02F1/24; F02F1/242; F02F2001/244; F02F2001/245; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
117 words
A method of fuel injection and ignition of an internal combustion engine, having a fuel injection valve of which an injection port is opened within a combustion chamber of the internal combustion engine, and introducing air into the combustion chamber, injecting fuel into the combustion chamber by the fuel injection valve to form a mixture of air and fuel, compressing the mixture, igniting the mixture with an ignition source, and taking out a part of its energy as power energy, said method comprising the steps of: injecting fuel into said combustion chamber by said fuel injection valve; and igniting fuel-air mixture near said injection port of said fuel injection valve for the duration of the fuel injection.
Claim 2
Independent Claim
123 words
A method of fuel injection and ignition of an internal combustion engine, having a fuel injection valve of which an injection port is opened within a combustion chamber of the internal combustion engine, and introducing air into the combustion chamber, injecting fuel into the combustion chamber by the fuel injection valve to form a mixture of air and fuel, compressing the mixture, igniting the mixture with an ignition source, and taking out a part of its energy as power energy, said method comprising the steps of: injecting fuel into said combustion chamber by said fuel injection valve; igniting fuel-air mixture near said injection port of said fuel injection valve; and terminating the fuel injection effected by said fuel injection valve after the ignition.
Claim 3
Independent Claim
157 words
A method of fuel injection and ignition of an internal combustion engine, having a fuel injection valve of which an injection port is opened within a combustion chamber of the internal combustion engine, and introducing air into the combustion chamber, injecting fuel into the combustion chamber by the fuel injection valve to form a mixture of air and fuel, compressing the mixture, igniting the mixture with an ignition source, and taking out a part of its energy as power energy, said method comprising the steps of: providing a nozzle at the periphery of said injection port of said fuel injection valve, providing said nozzle with a hole portion through which jet flow of the fuel injected from said fuel injection valve passes and injecting fuel into said nozzle and said combustion chamber by said fuel injection valve; and igniting fuel-air mixture near said injection port of said fuel injection valve for the duration of the fuel injection.
Claim 4
Independent Claim
157 words
A method of fuel injection and ignition of an internal combustion engine, having a fuel injection valve of which an injection port is opened within a combustion chamber of the internal combustion engine, and introducing air into the combustion chamber, injecting fuel into the combustion chamber by the fuel injection valve to form a mixture of air and fuel, compressing the mixture, igniting the mixture with an ignition source, and taking out a part of its energy as power energy, said method comprising the steps of: providing a nozzle at the periphery of said injection port of said fuel injection valve, providing said nozzle with a hole portion through which jet flow of the fuel injected from said fuel injection valve passes and injecting fuel into said nozzle and said combustion chamber by said fuel injection valve; igniting fuel-air mixture inside said nozzle; and terminating the fuel injection effected by said fuel injection valve after the ignition.
Claim 5
Dependent Claim
31 words
A method of fuel injection and ignition of an internal combustion engine according to claim 3, wherein the diameter of said hole portion of said nozzle is at least 1 mm.
Claim 6
Dependent Claim
68 words
A method of fuel injection and ignition of an internal combustion engine according to claim 1, further including the step of forming a flame kernel by arranging the ignition source for the fuel-air mixture at such a place that the flame kernel is carried on a secondary flow of fuel-air mixture formed around the jet flow of fuel injected from said injection port of said fuel injection valve.
Claim 7
Dependent Claim
78 words
A method of fuel injection and ignition of an internal combustion engine according to claim 1, further including the step of: forming at least one of swirling flow and tumbling flow in the flow of air introduced into said combustion chamber; and forming a flame kernel by arranging the ignition source for the fuel-air mixture at such a place that the flame kernel is carried on at least one flow of the swirling flow and the tumbling flow.
Claim 8
Dependent Claim
80 words
Apparatus of fuel injection and ignition of an internal combustion engine, having a fuel injection valve (2) of which an injection port is opened within a combustion chamber (21) of the internal combustion engine, an ignition source (3) and a control unit (8), characterized in that the ignition source (3) is located close to the injection port of the injection valve (2) and the control unit (8) is adapted to operate the ignition source (3) within the fuel injection period.
Claim 9
Dependent Claim
78 words
Apparatus of fuel injection and ignition of an internal combustion engine, having a fuel injection valve (2) of which an injection port is opened within a combustion chamber (21) of the internal combustion engine, ignition source (3) and a control unit (8), characterized in that the ignition source (3) is located close to the injection port of the injection valve (2) and the control unit (8) is adapted to terminate fuel injection after ignition of the fuel-air mixture.
Claim 10
Dependent Claim
118 words
Apparatus of fuel injection and ignition of an internal combustion engine, having a fuel injection valve (2) of which an injection port is opened within a combustion chamber (21) of the internal combustion engine, an ignition source (3) and a control unit (8), characterized in that a nozzle (30) is provided at the periphery of the injection port of the fuel injection valve (2), the nozzle (30) being provided with a hole portion (19, 20) through which jet flow of the fuel injected from said fuel injection valve (2) passes, the ignition source (3) is disposed inside said nozzle (30) and the control unit (8) is adapted to operate the ignition source (3) within the fuel injeciton period.
Claim 11
Dependent Claim
109 words
Apparatus of fuel injection and ignition of an internal combustion engine, having a fuel injection valve (2) of which an injection port is opened within a combustion chamber (21) of the internal combustion engine, and characterized in that a nozzle (30) is provided at the periphery of the injection port of the fuel injection valve (2), the nozzle (30) being provided with a hole portion (19, 20) through which jet flow of the fuel injected from said fuel injection valve (2) passes, the ignition source (3) is disposed inside said nozzle (30) and the control unit (8) is adapted to terminate fuel injection after ignition of the fuel-air mixture.
Claim 12
Dependent Claim
27 words
Apparatus according to claim 10 or 11, characterized in that the diameter of the hole portion (19, 20) of the nozzle (30) is at least 1 mm.
Claim 13
Dependent Claim
59 words
Apparatus according to claim 8 or 9, characterized by means for forming a flame kernel by arranging the ignition source for the fuel-air mixture at such a place that the flame kernel is carried on a secondary flow of the fuel-air mixture formed around the jet flow of fuel injected from said injection port of said fuel injection valve.
Claim 14
Dependent Claim
70 words
Apparatus according to claim 8 or 9, characterized by means for forming at least one of swirling flow and tumbling flow in the flow of air introduced into said combustion chamber; and means for forming a flame kernel by arranging the ignition source for the fuel-air mixture at such a place that the flame kernel is carried on at least one flow of the swirling flow and the tumbling flow.
Claim 15
Dependent Claim
29 words
Apparatus according to claims 8 or 10, characterized in that the control unit (8) is adapted to operate the ignition source (3) for the duration of the fuel injection.
Claim 16
Dependent Claim
24 words
Apparatus according to claims 9 or 11, characterized in that the control unit (8) is adapted to terminate fuel injection within the ignition period.
References Cited (Backward Citations)
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