CN108708807B - Engine air inlet system, automobile and engine air inlet method - Google Patents
Engine air inlet system, automobile and engine air inlet method Download PDFInfo
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- CN108708807B CN108708807B CN201810356635.3A CN201810356635A CN108708807B CN 108708807 B CN108708807 B CN 108708807B CN 201810356635 A CN201810356635 A CN 201810356635A CN 108708807 B CN108708807 B CN 108708807B
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- flow guide
- guide pipe
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10255—Arrangements of valves; Multi-way valves
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10268—Heating, cooling or thermal insulating means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention relates to the technical field of automobile manufacturing, in particular to an engine air inlet system, an automobile and an engine air inlet method. The system comprises: a filter; the rotary valve is continuously in a maximum opening state when filtered air and fuel oil are introduced into the flow guide pipe; an intake manifold; a cylinder body; and the controller is connected with the rotary valve and used for controlling the opening of the rotary valve according to the working condition of the engine. On the one hand, in the air exchange process of the engine, the rotary valve is continuously in the maximum opening state, so that the phenomenon of pumping loss caused by different opening degrees of the throttle valve is avoided, and the oil consumption and the cost are reduced. On the other hand, the controller controls the opening of the rotary valve according to the working condition of the engine, so that the engine can meet various working conditions, and the working reliability of the engine is improved.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to an engine air inlet system, an automobile and an engine air inlet method.
Background
At present, along with the continuous tightening of national oil consumption and emission regulations, more and more host plants are invested in the development of hybrid vehicle models, so that the improvement of the efficiency of the hybrid engine becomes the main development direction of the current host plant, the extended-range engine is a more special engine in the hybrid engine, the driving mileage of the vehicle is prolonged by charging a battery instead of directly providing power output for the vehicle, and therefore, the extended-range engine can work under a specific working condition, and if the air inlet amount is still controlled by using a throttle valve at the moment, certain pumping loss is brought, the fuel economy of the engine is not good, and the engine cost is greatly increased.
Disclosure of Invention
An object of the embodiments of the present invention is to provide an engine intake system, an automobile, and an engine intake method, which can reduce pumping loss of the intake system.
The technical problem to be solved by the embodiment of the invention is realized by adopting the following technical scheme.
In a first aspect, an embodiment of the present invention provides an engine intake system, including:
the filter is used for filtering air and comprises a filtering input end and a filtering output end, and the filtering input end of the filter is used for inputting the air;
the flow guide pipe comprises a flow guide input end and a flow guide output end, the flow guide input end of the flow guide pipe is provided with a rotary valve, the flow guide input end of the flow guide pipe is communicated with the filtering output end of the filter, and when filtered air and fuel oil are introduced into the flow guide pipe, the rotary valve is continuously in a maximum opening state;
the air inlet manifold comprises an air inlet input end and an air inlet output end, and the air inlet input end of the air inlet manifold is communicated with the flow guide output end of the flow guide pipe;
the cylinder body comprises a gas input end, and the gas input end of the cylinder body is communicated with the gas inlet output end of the gas inlet manifold; and the number of the first and second groups,
the controller is connected with the rotary valve and used for controlling the opening of the rotary valve according to the working condition of the engine;
the flow sensor is connected with the controller and used for detecting the gas flow of the flow guide pipe, so that the controller controls a rotary valve of the flow guide pipe according to the gas flow and a preset gas threshold flow;
the system further comprises a throttle valve, the throttle valve comprises a throttle valve input end and a throttle valve output end, the throttle valve input end of the throttle valve is communicated with the filtering output end of the filter, the throttle valve output end of the throttle valve is communicated with the air inlet input end of the air inlet manifold, the throttle valve is further connected with the controller, and the controller is used for controlling the switching between the throttle valve and the flow guide pipe according to the working condition of the engine.
Optionally, the system includes a heating unit configured to heat the flow guide tube when the gas flow rate of the flow guide tube is smaller than the preset gas threshold flow rate.
Optionally, the heating unit is an engine coolant circulation pipeline or a battery coolant circulation pipeline, the engine coolant circulation pipeline or the battery coolant circulation pipeline is provided with an electromagnetic valve, the electromagnetic valve is connected with the controller, and when the gas flow of the flow guide pipe is smaller than a preset gas threshold flow, the controller controls the electromagnetic valve to be in an open state so as to circulate the coolant.
Optionally, the intake manifold includes a variable intake manifold, the variable intake manifold includes a plurality of manifold channels that differ in length, and each manifold channel all is provided with controllable valve, every controllable valve with the controller is connected, the controller according to the operating mode of engine, control the switching between the manifold channel that a plurality of differences in length and every the aperture of the controllable valve of manifold channel.
In a second aspect, embodiments of the present invention provide an automobile including any one of the engine intake systems.
In a third aspect, an embodiment of the present invention provides an engine intake method, including:
providing a filter for filtering air;
providing a flow guide pipe, wherein when filtered air and fuel oil are introduced into the flow guide pipe, a rotary valve of the flow guide pipe is continuously in a maximum opening state so as to mix the filtered air and the fuel oil into combustible mixed gas;
providing an intake manifold and a cylinder, wherein the intake manifold is used for transmitting the combustible mixture to the cylinder;
providing a controller, wherein the controller controls the opening of the rotary valve according to the working condition of the engine;
providing a flow sensor, wherein the flow sensor is arranged at the input end of the flow guide pipe and is used for detecting the gas flow of the flow guide pipe, so that the controller controls a rotary valve of the flow guide pipe according to the gas flow and a preset gas threshold flow; and
and providing a throttle valve, wherein the throttle valve comprises a throttle valve input end and a throttle valve output end, the throttle valve input end of the throttle valve is communicated with the filtering output end of the filter, the throttle valve output end of the throttle valve is communicated with the air inlet input end of the air inlet manifold, the throttle valve is also connected with a controller, and the controller is used for controlling the switching between the throttle valve and the flow guide pipe according to the working condition of the engine.
Optionally, the controller controls the rotary valve of the flow guide pipe according to the gas flow and a preset gas threshold flow, including:
providing a heating unit;
judging whether the gas flow of the flow guide pipe is smaller than the preset gas threshold flow or not;
if the flow guide pipe is smaller than the preset flow guide pipe, heating the flow guide pipe through a heating unit;
and if the current opening degree of the rotary valve of the flow guide pipe is equal to or greater than the preset opening degree, maintaining the current opening degree of the rotary valve of the flow guide pipe.
The embodiment of the invention has the advantages that after the filter inputs the filtered air into the flow guide pipe, when the flow guide pipe is filled with the filtered air and the fuel oil and forms combustible mixed gas, the rotary valve is continuously in the maximum opening state, the intake manifold receives the mixed combustible mixed gas and inputs the combustible mixed gas into the cylinder body, and the controller also controls the opening of the rotary valve according to the working condition of the engine. Therefore, on one hand, in the air exchange process of the engine, the rotary valve is continuously in the maximum opening state, so that the phenomenon of pumping loss caused by different opening degrees of the throttle valve is avoided, and the oil consumption and the cost are further reduced. On the other hand, the controller controls the opening of the rotary valve according to the working condition of the engine, so that the engine can meet various working conditions, and the working reliability of the engine is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and can be implemented according to the content of the description in order to make the technical means of the present invention more clearly understood, and in order to make the above-mentioned engine intake system, automobile, engine intake method, and other objects, features, and advantages of the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a functional block diagram of an engine air intake system according to an embodiment of the present invention;
FIG. 2 is an electrical schematic diagram of an engine air intake system according to an embodiment of the present invention;
FIG. 3 is a functional block diagram of an intake system of an engine according to another embodiment of the present invention;
FIG. 4 is a schematic flow chart diagram illustrating an engine air induction method according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart diagram of a method of providing engine air induction in accordance with another embodiment of the present invention;
fig. 6 is a schematic flow chart of step 45 in fig. 5.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description will be given to specific embodiments, structures, features and effects of an engine intake system, an automobile and an engine intake method according to the present invention, with reference to the accompanying drawings and preferred embodiments.
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings. While the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and specific embodiments thereof.
The "pumping loss" referred to herein means: during ventilation, the engine sums algebraically the work consumed against the resistance of the inlet duct and the work consumed against the resistance of the exhaust duct.
Referring to fig. 1 and 2 together, an engine intake system 100 includes: filter 11, delivery pipe 12, intake manifold 13, cylinder 14 and controller 15.
The engine intake system 100 provided herein can be adapted for use in a suitable vehicle, such as a hybrid vehicle or the like.
The filter 11 includes a filtering input end and a filtering output end, the filtering input end of the filter 11 is used for inputting air, the filter 11 filters various impurities in the air, and outputs the filtered air through the filtering output end of the filter 11.
The draft tube 12 comprises a diversion input end and a diversion output end, the diversion input end of the draft tube 12 is provided with a rotary valve 16, and the diversion input end of the draft tube 12 is communicated with the filtering output end of the filter 11.
The input end of the flow guide pipe 12 is used for inputting filtered air and mixing the filtered air and fuel oil into combustible oil gas. In some embodiments, the inner surface of the draft tube 12 is smooth, which can reduce drag with air or fuel or combustible gas, thereby further reducing pumping losses.
The air inlet manifold 13 comprises an air inlet input end and an air inlet output end, and the air inlet input end of the air inlet manifold 13 is communicated with the flow guide output end of the flow guide pipe 12. The intake manifold 13 distributes the mixed fuel gas to the intake passages of the cylinders.
The cylinder 14 includes a gas input, and the gas input of the cylinder 14 communicates with an intake output of the intake manifold 13. The cylinder 14 combusts combustible oil gas and outputs power.
The controller 15 is connected to the rotary valve 16, and the controller 15 controls the opening degree of the rotary valve 16 according to the operating condition of the engine. For example, in the present embodiment, when the engine is operated under a special condition and the filtered air and fuel are introduced into the flow guide pipe 12, the controller 15 controls the rotary valve 16 to be continuously in the maximum opening state, so that it can avoid frequently switching the opening of the rotary valve 16 during ventilation, i.e. frequently adjusting the gas flow rate flowing through the flow guide pipe 12, thereby reducing pumping loss. In other embodiments, when the engine is operated at a high speed and filtered air and fuel are introduced into the duct 12, the controller 15 controls the rotary valve 16 to be continuously in a relatively large opening state to increase the gas flow. In other embodiments, when the engine is operating at low speed and filtered air and fuel are introduced into the duct 12, the controller 15 controls the rotary valve 16 to be continuously in a relatively small opening state to reduce the gas flow.
In summary, during the engine ventilation process, the rotary valve 16 is continuously in the maximum opening state, so that the phenomenon of pumping loss caused by different opening degrees of the throttle valve is avoided, and the oil consumption and the cost are reduced. On the other hand, the controller 15 controls the opening of the rotary valve according to the working condition of the engine, so that the engine can meet various working conditions, and the working reliability of the engine is improved.
In some embodiments, referring to fig. 2, the flow sensor 17 is disposed at the flow guiding input end of the flow guiding pipe 12, and the flow sensor 17 is connected to the controller 15. The flow sensor 17 is configured to detect a gas flow rate of the draft tube 12 and send a detection result to the controller 15. The controller 15 controls the rotary valve 16 of the flow guiding pipe 12 according to the gas flow and the preset gas threshold flow, for example, when the engine needs to work under a high-speed working condition, and the controller 15 analyzes that the current gas flow is smaller than the preset gas threshold flow required by the high-speed correspondence, the controller 15 adjusts the opening of the rotary valve 16 to the valve opening corresponding to the preset gas threshold flow. And vice versa, and will not be described in detail herein. Therefore, the controller 15 can satisfy the intake adjustment in any operating condition of the engine.
In practice, when the ambient temperature decreases, moisture in the air tends to condense on the draft tube 12, thereby affecting the intake air flow rate of the draft tube 12. Therefore, in some embodiments, referring to fig. 2 again, the engine intake system 100 includes a heating unit 18, and the heating unit 18 is configured to heat the flow guide tube 12 when the gas flow rate of the flow guide tube 12 is smaller than the preset gas threshold flow rate, so that the flow guide tube 12 prevents condensed water ice from blocking the gas from entering, and the operation reliability of the engine is improved.
In some embodiments, the heating unit 18 is an engine coolant circulation line or a battery coolant circulation line, and the engine coolant circulation line or the battery coolant circulation line is provided with a solenoid valve (not shown), and the solenoid valve is connected to the controller 15. When the gas flow rate of the draft tube 12 is smaller than the preset gas threshold flow rate, the controller 15 controls the electromagnetic valve to be in an open state to circulate the cooling liquid. Due to the relatively high temperature of the cooling fluid, the cooling fluid is in thermal communication with the draft tube 12, thereby preventing condensed water ice from blocking the entry of gases into the draft tube 12.
In some embodiments, referring to fig. 3, the engine intake system 100 further includes a throttle valve 19, the throttle valve 19 includes a throttle input and a throttle output, the throttle input of the throttle valve 19 is communicated with the filtered output of the filter 11, the throttle output of the throttle valve 19 is communicated with the intake input of the intake manifold 13, and the throttle valve 19 is further connected to the controller 15, and the controller 15 is configured to control switching between the throttle valve 19 and the duct 12 according to the operating condition of the engine. For example, when the engine is operating in a first operating condition, the throttle valve 19 is switched so that air filtered by the filter 11 enters the throttle valve 19. When the engine works under the second working condition, the engine is switched to the draft tube 12, so that the air filtered by the filter 11 enters the draft tube 12, and the rotary valve 16 is continuously in the maximum opening state.
In some embodiments, the intake manifold 13 comprises a variable intake manifold, the variable intake manifold comprises a plurality of manifold channels with different lengths, each manifold channel is provided with a controllable valve, each controllable valve is connected with the controller 15, and the controller 15 controls the switching among the manifold channels with different lengths and the opening of the controllable valve of each manifold channel according to the working condition of the engine, so as to meet the requirements of the engine under different performances.
As another aspect of the embodiments of the present invention, an engine intake method is provided. Referring to FIG. 4, an engine air induction method 400 includes:
43, providing an intake manifold and a cylinder body, wherein the intake manifold is used for transmitting combustible mixed gas to the cylinder body;
and step 44, providing a controller, wherein the controller controls the opening of the rotary valve according to the working condition of the engine.
In summary, in the engine ventilation process, the rotary valve is continuously in the maximum opening state, so that the phenomenon of pumping loss caused by different opening degrees of the throttle valve is avoided, and the oil consumption and the cost are reduced. On the other hand, the controller controls the opening of the rotary valve according to the working condition of the engine, so that the engine can meet various working conditions, and the working reliability of the engine is improved.
In some embodiments, referring to FIG. 5, engine air induction method 400 further comprises:
and step 45, providing a flow sensor, wherein the flow sensor is arranged at the input end of the flow guide pipe and is used for detecting the gas flow of the flow guide pipe, so that the controller controls the rotary valve of the flow guide pipe according to the gas flow and the preset gas threshold flow.
In some embodiments, referring to fig. 6, step 45 includes:
453, if the flow guide pipe is smaller than the flow guide pipe, heating the flow guide pipe through the heating unit;
and step 454, if the current opening degree of the rotary valve of the draft tube is equal to or larger than the preset opening degree, keeping the current opening degree of the rotary valve of the draft tube.
It should be noted that the engine air intake method can be executed in the engine air intake system provided by the embodiment of the invention, so that the engine air intake system has corresponding functional modules and beneficial effects of the execution method. Technical details which are not described in detail in the embodiment of the engine air intake method can be referred to the engine air intake system provided by the embodiment of the invention.
The engine intake system, the automobile and the engine intake method provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. An engine air intake system, comprising:
the filter is used for filtering air and comprises a filtering input end and a filtering output end, and the filtering input end of the filter is used for inputting the air;
the flow guide pipe comprises a flow guide input end and a flow guide output end, the flow guide input end of the flow guide pipe is provided with a rotary valve, the flow guide input end of the flow guide pipe is communicated with the filtering output end of the filter, and when filtered air and fuel oil are introduced into the flow guide pipe, the rotary valve is continuously in a maximum opening state;
the air inlet manifold comprises an air inlet input end and an air inlet output end, and the air inlet input end of the air inlet manifold is communicated with the flow guide output end of the flow guide pipe;
the cylinder body comprises a gas input end, and the gas input end of the cylinder body is communicated with the gas inlet output end of the gas inlet manifold; and the number of the first and second groups,
the controller is connected with the rotary valve and used for controlling the opening of the rotary valve according to the working condition of the engine;
the flow sensor is connected with the controller and used for detecting the gas flow of the flow guide pipe, so that the controller controls a rotary valve of the flow guide pipe according to the gas flow and a preset gas threshold flow;
the system further comprises a throttle valve, the throttle valve comprises a throttle valve input end and a throttle valve output end, the throttle valve input end of the throttle valve is communicated with the filtering output end of the filter, the throttle valve output end of the throttle valve is communicated with the air inlet input end of the air inlet manifold, the throttle valve is further connected with the controller, and the controller is used for controlling the switching between the throttle valve and the flow guide pipe according to the working condition of the engine.
2. The system of claim 1, comprising a heating unit for heating the flow conduit when the flow rate of gas in the flow conduit is less than the preset gas threshold flow rate.
3. The system of claim 2, wherein the heating unit is an engine coolant circulation line or a battery coolant circulation line, the engine coolant circulation line or the battery coolant circulation line is provided with a solenoid valve, the solenoid valve is connected with the controller, and the controller controls the solenoid valve to be in an open state to circulate the coolant when the gas flow rate of the flow guide pipe is less than a preset gas threshold flow rate.
4. The system of claim 1, wherein the intake manifold comprises a variable intake manifold comprising a plurality of manifold channels of different lengths, each of the manifold channels being provided with a controllable valve, each of the controllable valves being connected to the controller, the controller controlling switching between the plurality of manifold channels of different lengths and the opening of the controllable valve of each of the manifold channels in accordance with operating conditions of the engine.
5. An automobile characterized by comprising the engine intake system according to any one of claims 1 to 4.
6. An engine air intake method, comprising:
providing a filter for filtering air;
providing a flow guide pipe, wherein when filtered air and fuel oil are introduced into the flow guide pipe, a rotary valve of the flow guide pipe is continuously in a maximum opening state so as to mix the filtered air and the fuel oil into combustible mixed gas;
providing an intake manifold and a cylinder, wherein the intake manifold is used for transmitting the combustible mixture to the cylinder;
providing a controller, wherein the controller controls the opening of the rotary valve according to the working condition of the engine;
providing a flow sensor, wherein the flow sensor is arranged at the input end of the flow guide pipe and is used for detecting the gas flow of the flow guide pipe, so that the controller controls a rotary valve of the flow guide pipe according to the gas flow and a preset gas threshold flow; and
and providing a throttle valve, wherein the throttle valve comprises a throttle valve input end and a throttle valve output end, the throttle valve input end of the throttle valve is communicated with the filtering output end of the filter, the throttle valve output end of the throttle valve is communicated with the air inlet input end of the air inlet manifold, the throttle valve is also connected with a controller, and the controller is used for controlling the switching between the throttle valve and the flow guide pipe according to the working condition of the engine.
7. The method of claim 6, wherein the controller controls the rotary valve of the flow conduit based on the gas flow rate and a preset gas threshold flow rate, comprising:
providing a heating unit;
judging whether the gas flow of the flow guide pipe is smaller than the preset gas threshold flow or not;
if the flow guide pipe is smaller than the preset flow guide pipe, heating the flow guide pipe through a heating unit;
and if the current opening degree of the rotary valve of the flow guide pipe is equal to or greater than the preset opening degree, maintaining the current opening degree of the rotary valve of the flow guide pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810356635.3A CN108708807B (en) | 2018-04-19 | 2018-04-19 | Engine air inlet system, automobile and engine air inlet method |
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| CN201810356635.3A CN108708807B (en) | 2018-04-19 | 2018-04-19 | Engine air inlet system, automobile and engine air inlet method |
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| CN108708807B true CN108708807B (en) | 2020-10-30 |
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| US8001778B2 (en) * | 2007-09-25 | 2011-08-23 | Ford Global Technologies, Llc | Turbocharged engine control operation with adjustable compressor bypass |
| CN202493363U (en) * | 2012-01-19 | 2012-10-17 | 罗卓英 | Stepless variable supercharged air inlet system of automobile |
| CN202417753U (en) * | 2012-02-15 | 2012-09-05 | 柳州市俊杰汽配制造有限公司 | Air inlet tube of engine |
| HUP1500103A2 (en) * | 2015-03-12 | 2016-09-28 | Laszlo Pillmann | Method for promoting autocleaning of diesel and gasoline engines with turbochargers |
| CN205423002U (en) * | 2015-10-21 | 2016-08-03 | 无锡惠山泵业有限公司 | Novel car air supply device |
| DE102016203798B4 (en) * | 2016-03-09 | 2018-01-18 | Ford Global Technologies, Llc | Method for monitoring or adapting sensors or actuators in the inlet or outlet tract of an internal combustion engine |
| US10100719B2 (en) * | 2016-07-18 | 2018-10-16 | Delphi Technologies Ip Limited | GDCI intake air temperature control system and method |
| CN107246339A (en) * | 2017-08-14 | 2017-10-13 | 广西玉柴机器股份有限公司 | Engine aspirating system |
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