CN113775433B - Engine combustion system - Google Patents

Engine combustion system Download PDF

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Publication number
CN113775433B
CN113775433B CN202010525801.5A CN202010525801A CN113775433B CN 113775433 B CN113775433 B CN 113775433B CN 202010525801 A CN202010525801 A CN 202010525801A CN 113775433 B CN113775433 B CN 113775433B
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China
Prior art keywords
engine
oil
needle valve
opening
injector
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CN202010525801.5A
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CN113775433A (en
Inventor
张小矛
林长林
徐政
陈明
杨洋
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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Priority to CN202010525801.5A priority Critical patent/CN113775433B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D43/00—Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating or supervising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor

Abstract

The present application provides an engine combustion system comprising: the device comprises a control unit ECU, an engine working condition detection device, a first oil injector, a second oil injector and a spark plug; the control unit ECU is electrically connected with the engine working condition detection device, the first oil sprayer, the second oil sprayer and the spark plug; the first oil sprayer is arranged at the position of an air inlet channel of the engine, the second oil sprayer is arranged in a combustion chamber cylinder of the engine, the generation of carbon deposition is reduced, an oil injection mode is adjusted in time according to the working state and the scene of the engine, the position of an oil outlet of the oil sprayer is accurately adjusted, the fuel atomization effect is enhanced, the ignition position of a spark plug is adjusted in real time by the control unit ECU, the flame propagation speed during ignition is improved, the fuel is rapidly and cleanly combusted, the generation and the emission of particles during the working of the engine are reduced, and the oil consumption is reduced.

Description

Engine combustion system
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to an engine combustion system.
Background
Along with the development of the automobile industry, the emission test standard of automobiles is higher and higher, for example, the latest national emission standard, the test working condition of the emission test standard is closer to the actual driving condition of the automobiles, when the engine of the corresponding automobile is in a high-speed and high-load working condition, the rotating speed of the engine is high, the oil injector sprays a large amount of fuel into a combustion chamber of the engine in a short time, the atomization and evaporation time of the fuel is insufficient, the liquid fuel is directly combusted, the combustion is insufficient, a large amount of particulate matters are generated to be emitted, the emission of the large amount of particulate matters exceeds the standard, the environment is polluted, and the oil consumption of the engine is higher.
Disclosure of Invention
In view of this, one of the technical problems to be solved by the present application is to provide an engine combustion system, which can effectively reduce the particulate matters generated by insufficient fuel atomization and evaporation and insufficient combustion due to increased fuel injection amount, reduce pollution, and reduce the oil consumption of the engine.
The present application provides an engine combustion system comprising: the device comprises a control unit ECU, an engine working condition detection device, a first oil injector, a second oil injector and a spark plug;
the control unit ECU is electrically connected with the engine working condition detection device, the first oil injector, the second oil injector and the spark plug;
the first oil injector is arranged in an air inlet passage of the engine, the second oil injector is arranged in a combustion chamber cylinder of the engine, and the control unit ECU sets the oil injection modes of the first oil injector and the second oil injector according to the working state of the engine determined by the engine working condition detection device;
the spark plug is arranged in a combustion chamber cylinder of the engine, and the control unit ECU adjusts the ignition position of the spark plug according to the working state of the engine.
Optionally, in an embodiment of the present application, the first oil injector and/or the second oil injector is an internal and external double-opening oil injector;
the internal and external double-opening oil sprayer even has an internal opening oil way and an external opening oil way.
Optionally, in an embodiment of the present application, the internal and external double-opening fuel injector further includes: the needle valve comprises an outer opening needle valve component, an inner opening needle valve component and a shell;
a cavity is formed in the shell, the inner opening oil way and the outer opening oil way are arranged in the cavity of the shell, an oil outlet of the inner opening oil way is formed in the bottom end of the shell, and an oil outlet of the outer opening oil way is formed in the bottom end of the shell;
the inward opening needle valve assembly is arranged in the cavity and can close or open the inward opening oil way;
the outward opening needle valve component is arranged inside the cavity and can close or open the outward opening oil way.
Optionally, in an embodiment of the present application, the outward opening needle valve assembly includes: the electromagnetic valve comprises a first fixed iron core, a first armature, a first gasket, a first electromagnetic valve, a first sleeve, a first spring and an outward opening needle valve;
the first gasket is fixedly connected with the inner wall of the shell, the upper end face of the first armature is fixedly connected with the lower end face of the first gasket, the first sleeve is fixedly connected with the inner side of the shell, an annular bulge structure is arranged on the first sleeve, and the annular bulge structure and the first gasket are used for limiting the moving position of the first armature;
the upper part of the outward opening needle valve is fixedly connected with the first armature, a cavity is arranged in the outward opening needle valve, the upper part of the outward opening needle valve is sleeved with the first spring, the upper end of the first spring is contacted with the first armature, and the lower end of the first spring is connected with the first fixed iron core;
the first solenoid valve is electrically connected with the first fixed iron core to control the power-on and power-off of the first fixed iron core, and when the solenoid valve is powered on, the first armature can move towards the direction close to the first fixed iron core by the electromagnetic force generated by the first fixed iron core to drive the externally-opened needle valve to move so as to open the oil outlet of the externally-opened oil way; when the electromagnetic valve is powered off, the first armature is acted by the spring force of the first spring and moves towards the direction close to the first gasket so as to drive the externally-opened needle valve to move and close the oil outlet of the externally-opened oil way.
Optionally, in an embodiment of the present application, the inner opening needle valve assembly comprises: the inner opening needle valve, the inner opening needle valve seat, the second fixed iron core, the second armature, the second electromagnetic valve, the second spring, the second sleeve and the second gasket;
the inner opening needle valve seat is arranged at the oil outlet of the inner opening oil way, and one end of the inner opening needle valve can be contacted with the inner opening needle valve seat to close the oil outlet of the inner opening oil way;
the second gasket is fixedly connected with the inner wall of the shell, the second armature is fixedly connected with the upper end of the inward opening needle valve, the second fixed iron core is fixed at the upper end of the shell and is electrically connected with the second electromagnetic valve, the second spring is sleeved on the upper portion of the inward opening needle valve, the first end of the second spring is in contact with and fixed to the lower end face of the second sleeve, and the second end of the second spring is fixedly connected with the inward opening needle valve;
when the second electromagnetic valve is powered off, the inner opening needle valve moves downwards under the spring force of the second spring, so that the lower end of the inner opening needle valve is in contact with the valve seat of the inner opening needle valve to close the oil outlet of the inner opening oil way; when the second electromagnetic valve is electrified, the second armature is attracted by the electromagnetic force of the second fixed iron core to drive the inward opening needle valve to move upwards, so that the lower end of the inward opening needle valve is separated from the valve seat of the inward opening needle valve to open the oil outlet of the inward opening oil duct.
Optionally, in an embodiment of the present application, the inner opening needle valve seat is provided with at least one orifice;
and when the lower end of the inner opening needle valve is separated from the valve seat of the inner opening needle valve, the at least one pore passage is communicated with the inner opening oil way.
Optionally, in an embodiment of the present application, the engine operating condition detecting device includes a rotation speed detecting device, and the rotation speed detecting device is configured to detect a rotation speed of the engine to determine the operating state of the engine.
Optionally, in an embodiment of the present application, the engine tool detection device further includes a cylinder pressure sensor, where the cylinder pressure sensor is configured to detect a cylinder pressure in a combustion chamber of the engine, so as to determine an operating state of the engine.
Optionally, in an embodiment of the present application, the engine tool detection device further includes an in-cylinder turbulence detection device, and the in-cylinder turbulence detection device is configured to detect a turbulence energy intensity in a combustion chamber of the engine, so as to determine an operating state of the engine.
Alternatively, in an embodiment of the application, the control unit ECU adjusts the ignition position of the spark plug in accordance with the intensity of turbulent kinetic energy in the combustion chamber of the engine.
The present application provides an engine combustion system comprising: the device comprises a control unit ECU, an engine working condition detection device, a first oil injector, a second oil injector and a spark plug; the control unit ECU is electrically connected with the engine working condition detection device, the first oil injector, the second oil injector and the spark plug; the first oil sprayer is arranged at the position of an air inlet channel of the engine, the second oil sprayer is arranged in a combustion chamber cylinder of the engine, the generation of carbon deposition is reduced, the oil injection mode is adjusted in time according to the working state and the scene of the engine, the position of an oil outlet of the oil sprayer is accurately adjusted, the fuel atomization effect is enhanced, the ignition position of a spark plug is adjusted in real time by the control unit ECU, the flame propagation speed during ignition is increased, the rapid and clean combustion of fuel is realized, the generation and the emission of particles during the working of the engine are reduced, and the oil consumption of the engine is reduced.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic illustration of an engine combustion system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an internal and external double-opening fuel injector provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of a retractable spark plug according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an inside-outside double-opening mode operation of a first fuel injector according to an embodiment of the present application;
FIG. 5 is a schematic illustration of a first in-opening mode operation of a fuel injector according to an embodiment of the present disclosure;
FIG. 6 is a schematic illustration of operation of a second fuel injector provided in accordance with an embodiment of the present application;
fig. 7 is an operation schematic diagram of a retractable spark point provided in an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application shall fall within the scope of protection of the embodiments of the present application.
Example one
The present application provides an engine combustion system, as shown in fig. 1, fig. 1 is a schematic structural diagram of an engine combustion system provided in an embodiment of the present application: the method comprises the following steps: a control unit ECU (not shown in fig. 1), an engine operating condition detection device (not shown in fig. 1), a first injector 101, a second injector 102, and an ignition plug 103;
the control unit ECU is electrically connected with an engine working condition detection device, a first oil injector 101, a second oil injector 102 and a spark plug 103;
the method comprises the following steps that a first oil injector 101 is arranged in an air inlet passage of an engine, a second oil injector 102 is arranged in a combustion chamber cylinder of the engine, and an ECU (electronic control unit) controls oil injection modes of the first oil injector 101 and the second oil injector 102 according to the working state of the engine determined by an engine working condition detection device;
the spark plug 103 is provided in a combustion chamber cylinder of the engine, and the ECU adjusts an ignition position of the spark plug 103 according to an operating state of the engine.
Optionally, in an implementation manner of the present application, the first oil injector and/or the second oil injector is an internal and external double-opening oil injector;
the internal and external double-opening oil sprayer is provided with an external opening oil way and an internal opening oil way.
In the use scene of the inside and outside two sprayer of this embodiment, there are three kinds of mode for the inside and outside two sprayer: the mode is an inward opening mode, an outward opening mode and an inward and outward opening mode;
an inward opening mode: the external connection of the oil sprayer of the internal opening oil way is communicated, and the external opening oil way is not communicated with the external connection of the oil sprayer.
An outward opening mode: the outward opening oil way is communicated with the outside of the oil sprayer through an oil outlet, and the inward opening oil way is communicated with the outside of the oil sprayer.
Inside and outside two modes of opening: the inner opening oil way and the outer opening oil way of the oil sprayer are both communicated with the outer connection of the oil sprayer.
In an application scenario of this embodiment, when the engine working condition detection device detects that the engine is in a high-load working condition, in order to provide sufficient power to drive the vehicle to accelerate, at this time, an oil injection requirement required by the operation of the engine is increased, and at this time, the control unit ECU disperses the fuel into the first oil injector and the second oil injector, so that under the condition that the operation of the engine can meet the oil injection requirement of the current working condition, the oil injection amount of the single oil injector is reduced, the fuel atomization effect when the first oil injector and the second oil injector inject oil is improved, and the emission of particulate matters is reduced.
In order to further reduce the particulate matters, the oil injector can be set into an internal and external double-opening oil injector which is provided with an internal oil way and an external oil way, and the ECU can improve the fuel atomization effect of the fuel oil injector during oil injection and reduce the emission of the particulate matters through the working modes of the internal oil way and the external oil way according to different working conditions of the engine.
Optionally, in an implementation manner of the present application about an inside and outside dual-opening fuel injector, as shown in fig. 2, fig. 2 is a schematic structural diagram of the inside and outside dual-opening fuel injector provided in this application, where the inside and outside dual-opening fuel injector includes: an outer opening needle valve assembly 201, an inner opening needle valve assembly 202 and a housing 203.
A cavity for accommodating an inner open oil path 204 and an outer open oil path 205 is arranged inside the shell 203, an oil outlet 206 of the inner open oil path 204 is arranged at the bottom end of the shell 203, and an oil outlet 207 of the outer open oil path 205 is arranged at the bottom end of the shell;
the inner opening needle valve assembly 201 is arranged inside the shell 203, and the inner opening needle valve assembly 203 can close or open the inner opening oil path 204;
the outward opening needle valve assembly 202 is arranged inside the housing 203, and the outward opening needle valve assembly 202 can close or open the outward opening oil path 205.
In an implementation manner of this embodiment, the oil outlet 206 of the inner open oil path 204 is disposed at the center of the bottom end of the housing 203, and the oil outlet 207 of the outer open oil path 205 is disposed at the periphery of the bottom end of the housing, in the working process of the inner and outer double-open oil injector provided in this embodiment, the ECU may open or close the oil outlets at different positions of the oil injector by adjusting the working modes of the inner and outer double-open oil injector according to different working conditions of the engine, so as to adjust the oil injection angle of the oil injector, improve the atomization effect of the fuel, thereby improve the combustion efficiency of the fuel, and reduce the generation and discharge of particulate matters.
Optionally, in an implementation manner of the present embodiment regarding the dual inside and outside fuel injector, as shown in fig. 2, the outside opening needle valve assembly includes: a first fixed iron core 2011, a first armature 2012, a first gasket 2013, a first solenoid 2014, a first sleeve 2015, a first spring 2016 and an outward opening needle 2017;
the first shim 2013 is fixedly connected with the inner wall of the housing 203, the upper end surface of the first armature 2012 is in contact with the lower end surface of the first shim 2013, the first sleeve 2015 is fixedly connected with the inner wall of the housing 203, the upper part of the first sleeve is provided with an annular convex structure 2018, and the annular convex structure 2018 and the first shim 013 are used for limiting the moving position of the first armature 012;
the upper part 2017 of the outward opening needle valve is fixedly connected with a first armature 012, a cavity is arranged in the outward opening needle valve component, a first spring 2016 is sleeved on the upper part of the outward opening needle valve 2017, the upper end of the first spring 016 is in contact with the first armature 2012, and the lower end of the first spring 2016 is in contact with or connected with a first fixed iron core 2011;
when the first solenoid valve 2014 is electrified, the electromagnetic force generated by the first fixed iron core 011 can attract the first armature 2012 to move towards the direction close to the first fixed iron core 2011, so as to drive the externally-opened needle valve 2017 to move, so as to open the oil outlet 207 of the externally-opened oil path; when the first solenoid valve 2014 is powered off, the first armature 2012 is acted by the spring force of the first spring 2016 to move towards the direction close to the first gasket 2013, so as to drive the externally-opened needle valve 2017 to move, and thus the oil outlet 207 of the externally-opened oil path is closed.
Optionally, in an implementation manner of the present embodiment regarding the dual inside and outside opening fuel injector, the inside opening needle valve assembly includes: the inner opening needle valve 2021, the inner opening needle valve seat 2022, a second fixed iron core 2023, a second armature 2024, a second electromagnetic valve 2025, a second spring 2026, a second sleeve 2027 and a second gasket 2028;
the internally-opened needle valve seat 2022 is arranged at the oil outlet 206 of the internally-opened oil circuit and is fixedly connected with the shell 203, and one end of the internally-opened needle valve 2021 can be contacted with the internally-opened needle valve seat 2022 to close the oil outlet 206 of the internally-opened oil circuit;
the second gasket 2028 is fixedly connected with the inner wall of the housing 203, the second armature 2024 is fixedly connected with the upper end of the inner opening needle valve 2021, the second fixed iron core 2027 is fixed at the upper end of the housing 203, the second fixed iron core 2027 is electrically connected with the second electromagnetic valve 2025, the upper part of the inner opening needle valve 2021 is sleeved with a second spring 2026, the second sleeve 2027 is provided with a convex structure 2029, the first end of the second spring 2026 is contacted and fixed with the lower end face of the convex structure 2029 on the second sleeve 2027, and the second end of the second spring 2026 is fixedly connected with the inner opening needle valve 2021;
when the second electromagnetic valve is powered off, the inner opening needle valve moves downwards under the spring force of the second spring, so that one end of the inner opening needle valve is in contact with the valve seat of the inner opening needle valve to close the oil outlet of the inner opening oil way; when the second electromagnetic valve is electrified, the internally-opened needle valve is attracted by the electromagnetic force of the second fixed iron core and moves upwards to drive one end of the internally-opened needle valve to be separated from the internally-opened needle valve seat so as to open the oil outlet of the internally-opened oil way.
Optionally, in an implementation manner of this embodiment, a protrusion structure is disposed on the inward opening needle valve, and the protrusion structure can contact and separate from the first gasket to close and open an inward opening oil path of the fuel injector.
Optionally, in an implementation manner of the present embodiment regarding the inner opening needle valve assembly, the inner opening needle valve seat is provided with at least one orifice; when one end of the inner opening needle valve is separated from the valve seat of the inner opening needle valve, the at least one pore passage is communicated with the inner opening oil way.
In the inward opening needle valve assembly, the pore channel is formed in the inward opening needle valve seat, when the inward opening oil path is opened by the inward opening needle valve assembly, fuel passes through the outer surface of the inward opening needle valve and turns around when passing through the inward opening needle valve seat, and turns around when passing through the pore channel, so that the turbulence intensity of the fuel can be further improved, the atomization effect of the fuel sprayed out from the oil outlet of the inward opening oil path is promoted, and the generation and the emission of particles are further reduced.
Optionally, in an implementation manner of this embodiment, the engine operating condition detecting device includes a rotation speed detecting device, and the rotation speed detecting device is configured to detect a rotation speed of the engine to determine the operating state of the engine.
In an implementation manner of the present embodiment regarding the rotation speed detecting device, the rotation speed detecting device may be a torque sensor, which is used to detect an output torque of the engine, so as to determine the rotation speed of the engine, and optionally, other detecting devices may also be used to determine an operating state of the engine, such as an accelerator pedal sensor, etc., and the present embodiment is only described in an exemplary manner, and does not represent that the present application is limited thereto.
Optionally, in an implementation manner of this embodiment, the engine tool detection device further includes a cylinder pressure sensor, where the cylinder pressure sensor is configured to detect a cylinder pressure in a combustion chamber of the engine, so as to determine a working state of the engine. For example, in one implementation of the present embodiment, the control unit ECU converts a value of the detected cylinder pressure in the combustion chamber of the engine into an IMEP value (mean effective pressure) by the cylinder pressure sensor, thereby determining the current engine operating state.
Certainly, in this implementation, the working condition of the engine may also be determined according to the engine speed and the cylinder pressure together, so that the working condition detection of the engine is more accurate, for example, the engine working condition when the IMEP value of the engine is greater than or equal to 15bar and the engine speed is greater than 4000rpm (revolutions) may be determined that the current engine is in the high-speed and heavy-load working condition, and the fuel injection quantity required by the engine is increased at this time.
Optionally, in an embodiment of the present application, the engine tool detection device further includes an in-cylinder turbulence detection device, and the in-cylinder turbulence detection device is configured to detect turbulence energy intensity in a combustion chamber of the engine, so as to determine an operating state of the engine.
Alternatively, in one embodiment of the present application, the control unit ECU is capable of adjusting the ignition position of the spark plug based on the intensity of turbulent kinetic energy within the combustion chamber of the engine.
Optionally, in an implementation manner of the present embodiment, the spark plug may be a retractable spark plug, as shown in fig. 3, fig. 3 is a schematic structural diagram of a retractable spark plug provided in an embodiment of the present application, and the retractable spark plug includes a spark plug housing 301 and an electrode 302;
the spark plug housing is provided internally with a cavity and an opening structure 303 through which the electrode 302 can protrude out of the spark plug housing.
Optionally, in an implementation manner of the retractable spark plug in the present embodiment, as shown in fig. 3, the retractable spark plug further includes: a third armature 304, a third spring 305, a third solenoid valve 306, and a third stationary core 307;
the third armature 304 is arranged in a cavity of the spark plug shell 301, the upper end face of the third armature 304 is in contact with one end of the cavity in the spark plug shell, the lower end face of the third armature 304 is fixedly connected with the upper end of the electrode 302, the third spring 305 is sleeved on the electrode, the upper end of the third spring 305 is fixedly connected with the lower end of the third armature 304, the third fixed iron core 307 is arranged in the spark plug shell 301 close to the opening structure 303, and the third electromagnetic valve 306 is electrically connected with the third fixed iron core 307;
when the third electromagnetic valve 306 is energized, the electromagnetic force generated by the third fixed iron core 307 can attract the third armature 304 to move towards the position of the opening structure 303, so as to drive the electrode 302 to extend out of the spark plug shell 301;
when the third solenoid valve 306 is de-energized, the third armature 304 moves toward the upper end surface near the internal cavity of the spark plug housing 301 by the elastic force of the third spring 305, so that the electrode 302 extends back into the cavity of the spark plug housing 301. Of course, the present embodiment is only described here as an example of the structure of the retractable spark plug, and does not represent that the present application is limited thereto.
In an application scenario of the embodiment, when the spark plug of the engine combustion system is the retractable spark plug of the embodiment, the control unit ECU can control the electrode to extend out of the spark plug housing by a distance according to the operating condition of the engine so as to adjust the ignition position in the combustion chamber of the engine.
When the engine works, the turbulent kinetic energy in the combustion chamber of the engine is larger, and the combustion speed is higher, so that the ignition position of a spark point is adjusted according to different turbulent kinetic energy intensities in the combustion chamber cylinder under different operation conditions of the engine, and the propagation speed of flame after ignition is improved by utilizing high turbulent kinetic energy when the spark plug is ignited near the position where the turbulent kinetic energy of the combustion chamber of the engine is maximum, so that the rapid combustion of fuel is realized, and the emission of particulate matters is reduced.
Utilize the scalable spark plug that this embodiment provided, can reduce the control degree of difficulty that the control unit ECU adjusted the spark plug position, when needs adjust the ignition position, need not move through the overall structure who adjusts the spark plug and carry out ignition point position control, can stretch out the structure of spark plug through the electrode moreover, can also avoid the combustion chamber of engine fuel to ignite and produce the influence of high temperature to spark plug inner structure, improve the life of spark plug.
The present application provides an engine combustion system comprising: the device comprises a control unit ECU, an engine working condition detection device, a first oil injector, a second oil injector and a spark plug; the control unit ECU is electrically connected with the engine working condition detection device, the first oil sprayer, the second oil sprayer and the spark plug; the first oil sprayer is arranged at the position of an air inlet channel of the engine, the second oil sprayer is arranged in a combustion chamber cylinder of the engine, the generation of carbon deposition is reduced, an oil injection mode is adjusted in time according to the working state and the scene of the engine, the position of an oil outlet of the oil sprayer is accurately adjusted, the fuel atomization effect is enhanced, the phenomenon that a cylinder sleeve wets the wall is reduced, the ignition position of a spark plug is adjusted in real time, the flame propagation speed during ignition is improved, quick clean combustion is realized, and the particulate matter emission during the working of the engine is reduced.
Example two
Based on the engine combustion system described in the first embodiment, the present embodiment describes the engine operating conditions described in the first embodiment of the present application with a specific engine operating condition (the engine is in a heavy load operating state).
When the engine is in heavy load operating condition, the fuel injection quantity increases, and in order to reduce particulate matter emission under this operating condition, the flow of a duty cycle of the combustion system that this application embodiment one provided is as follows:
step 1, a control unit ECU determines the current working condition of an engine according to data detected by an engine working condition detection device, such as a torque sensor and a cylinder pressure sensor;
step 2, when the engine is determined to be in a large load working condition: the control unit ECU disperses fuel to the first fuel injector and the second fuel injector;
and 3, when the air inlet channel is closed, the first oil injector enters an internal and external double opening mode, the external opening oil way is not communicated with oil, the internal opening oil way is communicated with oil, the ECU controls the external opening needle valve to extend to the position near the back of an air inlet valve of the engine, the oil outlet position of the internal opening oil way is close to a combustion chamber of the engine, as shown in fig. 4, fig. 4 is a working schematic diagram of the internal and external double opening mode of the first oil injector provided by the embodiment of the application, at the moment, the oil beam cone angle of the oil beam which passes through the oil outlet of the internal opening oil way of the first oil injector 101 and is arranged at the joint of the air inlet channel and the combustion chamber of the engine is smaller, more oil beams are arranged on the back of the air inlet valve with higher temperature, and the evaporation of the fuel is promoted by using the high temperature on the back of the air inlet channel, so that the oil beams are arranged in the area with lower temperature, the oil film accumulation is avoided, and the generation of particles is reduced.
Step 4, when the air inlet channel is opened, the ECU controls the first oil sprayer to enter an inward opening mode, at the moment, an outward opening oil way of the first oil sprayer is not communicated with oil, an inward opening oil way is communicated with oil, and the position of an oil outlet of the inward opening oil way is far away from the combustion chamber, as shown in FIG. 5, FIG. 5 is an inward opening mode working schematic diagram of the first oil sprayer provided by the embodiment of the application; at this time, the oil beam is injected to the junction position of the air inlet channel and the combustion chamber through the oil outlet of the internally opened oil path of the first oil injector 101, the oil beam taper angle is increased relative to the junction position of the air inlet channel and the combustion chamber, the oil beam is spread more, the liquid fuel is broken into small liquid drops and is accelerated to atomize, the phenomenon that the fuel of an engine cylinder sleeve wets the wall is reduced when the air enters the combustion chamber of the engine along with the air flow of the inlet air, and therefore the generation and the emission of particles in the engine are reduced.
Step 5, the second oil injector 102 enters an inward opening mode, the outward opening oil way of the second oil injector 102 is not filled with oil, the inward opening oil way of the second oil injector 102 is filled with oil, and oil is directly injected into a combustion chamber cylinder of the engine through an oil outlet of the inward opening oil way of the second oil injector 102; at the end of the injection of the second injector 102, at this time, the fuel injection amount gradually decreases, the control unit ECU controls the outward opening needle valve of the outward second injector 102 to extend out of the bottom section of the casing of the second injector 102, as shown in fig. 6, fig. 6 is a schematic working diagram of the second injector 102 according to the embodiment of the present application, the outward opening needle valve of the second injector 102 extends into the vicinity of the center position of the combustion chamber of the engine, and is far away from the wall surface of the combustion chamber of the engine, and the atomization and evaporation of the fuel droplets remaining on the outward opening needle valve are accelerated by utilizing the faster air flow velocity in the vicinity of the center position of the combustion chamber, so that the combustion efficiency of the fuel is ensured, the production and emission of particulate matters are also reduced, the pollution is reduced, and the combustion efficiency of the fuel is improved.
Step 6: when the control unit ECU controls the ignition of the spark plug, the control unit ECU controls the electrode of the spark plug to extend out of the spark plug shell and extend into the position close to the maximum position of the turbulent kinetic energy in the combustion chamber according to the intensity of the turbulent kinetic energy in the engine chamber detected by the turbulent kinetic energy detection device, as shown in FIG. 7, FIG. 7 is a working schematic diagram of the spark plug point 103 provided by the embodiment of the application, the control unit ECU determines the maximum position of the turbulent kinetic energy in the combustion chamber according to the intensity of the turbulent kinetic energy in the combustion chamber of the engine detected by the turbulent kinetic energy intensity detection device, controls the electrode of the spark plug 103 to extend into the position close to the position, and utilizes the high turbulent kinetic energy in the combustion chamber cylinder to improve the flame propagation speed of the spark plug motor during ignition, so as to realize the rapid combustion of fuel and reduce the emission of particulate matters.
According to the engine combustion system control method, the control unit ECU adjusts the injection position and the angle of the oil beam according to the working condition of the engine by adjusting the injection modes of the first oil injector at the position of the air inlet channel and the second oil injector in the combustion chamber of the engine, improves the atomization effect of the fuel, adjusts the ignition position of the spark point electrode according to the turbulent kinetic energy intensity in the combustion chamber of the engine, improves the spread of flame after ignition, achieves the rapid and efficient combustion of the fuel sprayed by the first oil injector and the second oil injector, effectively reduces the production and the emission of particles generated under the working condition of large load of the engine, and reduces the oil consumption.
So far, specific embodiments of the present application have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may be advantageous.
The controller may be implemented in any suitable manner, for example, the controller may take the form of, for example, a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic controller, and an embedded microcontroller, examples of which include, but are not limited to, the following microcontrollers: ARC 625D, atmel AT91SAM, microchip PIC18F26K20, and Silicone Labs C8051F320, the memory controller may also be implemented as part of the control logic for the memory. Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may thus be considered a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
For convenience of description, the above devices are described as being divided into various units by function, respectively. Of course, the functionality of the various elements may be implemented in the same one or more pieces of software and/or hardware in the practice of the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises that element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular transactions or implement particular abstract data types. The application may also be practiced in distributed computing environments where transactions are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (9)

1. An engine combustion system, comprising: the device comprises a control unit ECU, an engine working condition detection device, a first oil injector, a second oil injector and a spark plug;
the control unit ECU is electrically connected with the engine working condition detection device, the first oil injector, the second oil injector and the spark plug;
the engine working condition detection device further comprises an in-cylinder turbulence detection device, and the in-cylinder turbulence detection device is used for detecting the turbulence energy intensity in a combustion chamber of the engine so as to determine the working state of the engine;
the first oil injector is arranged in an air inlet passage of the engine, the second oil injector is arranged in a combustion chamber cylinder of the engine, and the control unit ECU sets the oil injection modes of the first oil injector and the second oil injector according to the working state of the engine determined by the engine working condition detection device;
the spark plug is arranged in a combustion chamber cylinder of the engine, and the control unit ECU adjusts the ignition position of the spark plug according to the working state of the engine.
2. The engine combustion system of claim 1, wherein the first injector and/or the second injector are dual inside and outside injector;
the inside and outside double-open oil sprayer is provided with an inside opening oil way and an outside opening oil way.
3. The engine combustion system of claim 1, wherein the control unit ECU adjusts the ignition position of the spark plug based on the intensity of turbulent kinetic energy within a combustion chamber of the engine.
4. The engine combustion system of claim 2, wherein the dual inside and outside fuel injector further comprises: the needle valve comprises an outer opening needle valve component, an inner opening needle valve component and a shell;
a cavity is formed in the shell, the inner opening oil way and the outer opening oil way are arranged in the cavity of the shell, an oil outlet of the inner opening oil way is formed in the bottom end of the shell, and an oil outlet of the outer opening oil way is formed in the bottom end of the shell;
the inward opening needle valve assembly is arranged in the cavity and can close and open the inward opening oil way;
the outer opening needle valve component is arranged inside the cavity and can close and open the outer opening oil way.
5. The engine combustion system of claim 4, wherein the outwardly opening needle valve assembly comprises: the electromagnetic valve comprises a first fixed iron core, a first armature, a first gasket, a first electromagnetic valve, a first sleeve, a first spring and an outward opening needle valve;
the first gasket is fixedly connected with the inner wall of the shell, the upper end face of the first armature is fixedly connected with the lower end face of the first gasket, the first sleeve is fixedly connected with the inner side of the shell, an annular bulge structure is arranged on the first sleeve, and the annular bulge structure and the first gasket are used for limiting the moving position of the first armature;
the upper part of the outward opening needle valve is fixedly connected with the first armature, a cavity is arranged in the outward opening needle valve assembly, the upper part of the outward opening needle valve is sleeved with the first spring, the upper end of the first spring is contacted with the first armature, and the lower end of the first spring is connected with the first fixed iron core;
the first electromagnetic valve is electrically connected with the first fixed iron core to control the power-on and power-off of the first fixed iron core, and when the electromagnetic valve is powered on, the first armature can move towards the direction close to the first fixed iron core by the electromagnetic force generated by the first fixed iron core to drive the externally-opened needle valve to move so as to open the oil outlet of the externally-opened oil way; when the electromagnetic valve is powered off, the first armature is acted by the spring force of the first spring and moves towards the direction close to the first gasket so as to drive the externally-opened needle valve to move and close the oil outlet of the externally-opened oil way.
6. The engine combustion system of claim 4, wherein the inner open needle valve assembly comprises: the inner opening needle valve, the inner opening needle valve seat, the second fixed iron core, the second armature, the second electromagnetic valve, the second spring, the second sleeve and the second gasket;
the inner opening needle valve seat is arranged at the oil outlet of the inner opening oil way, and one end of the inner opening needle valve can be contacted with the inner opening needle valve seat to close the oil outlet of the inner opening oil way;
the second gasket is fixedly connected with the inner wall of the shell, the second armature is fixedly connected with the upper end of the inward opening needle valve, the second fixed iron core is fixed at the upper end of the shell and is electrically connected with the second electromagnetic valve, the second spring is sleeved on the upper portion of the inward opening needle valve, a protruding structure is arranged on the second sleeve, the first end of the second spring is in contact with and fixed to the lower end face of the protruding structure on the second sleeve, and the second end of the second spring is fixedly connected with the inward opening needle valve;
when the second electromagnetic valve is powered off, the second armature moves downwards under the spring force of the second spring to drive the inward opening needle valve to move, so that the lower end of the inward opening needle valve is in contact with the valve seat of the inward opening needle valve to close the oil outlet of the inward opening oil way; when the second electromagnetic valve is powered on, the second armature is attracted by the electromagnetic force of the second fixed iron core to drive the inward opening needle valve to move upwards, so that the lower end of the inward opening needle valve is separated from the valve seat of the inward opening needle valve to open the oil outlet of the inward opening oil way.
7. The engine combustion system of claim 6, wherein the inside opening needle valve seat is provided with at least one orifice;
and when the lower end of the inner opening needle valve is separated from the valve seat of the inner opening needle valve, the at least one pore passage is communicated with the inner opening oil way.
8. The engine combustion system as claimed in claim 1, wherein the engine operating condition detecting means includes rotational speed detecting means for detecting a rotational speed of the engine to determine the operating state of the engine.
9. The engine combustion system of claim 8, wherein the engine tool detection device further comprises a cylinder pressure sensor for detecting a cylinder pressure within a combustion chamber of the engine to determine an operating state of the engine.
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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5221539A (en) * 1975-08-09 1977-02-18 Kiyoshi Yamakawa Firing device of an internal combustion engine
DE2624238C2 (en) * 1976-05-29 1985-10-10 Etler-Peter 4402 Greven Tylka spark plug
EP0065282B1 (en) * 1981-05-20 1985-10-09 Robert Bosch Gmbh Fuel injection nozzle for internal-combustion engines
JP3572873B2 (en) * 1997-06-12 2004-10-06 日産自動車株式会社 Control device for internal combustion engine
US9391430B2 (en) * 2013-01-25 2016-07-12 Ford Global Technologies, Llc Ignition plug and method for the ignition of a fuel-air mixture by means of an ignition plug of said type
CN203867720U (en) * 2014-06-06 2014-10-08 上海汽车集团股份有限公司 Cylinder cover, variable compression engine and automobile
CN109026366B (en) * 2018-08-01 2020-06-26 江苏大学 In-cylinder direct injection rotary engine injection ignition system with variable ignition position
CN110145405A (en) * 2019-04-23 2019-08-20 上海交通大学 The double injected petrol lean-combustion engines of perforated plate type atomizer

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