CN114876651A - Throttle valve control system and method based on intake energy recovery - Google Patents
Throttle valve control system and method based on intake energy recovery Download PDFInfo
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- CN114876651A CN114876651A CN202210522066.1A CN202210522066A CN114876651A CN 114876651 A CN114876651 A CN 114876651A CN 202210522066 A CN202210522066 A CN 202210522066A CN 114876651 A CN114876651 A CN 114876651A
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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
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D13/00—Combinations of two or more machines or engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
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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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention discloses a throttle valve control system and method based on intake energy recovery, wherein the system comprises a throttle valve body, an intake pipeline arranged in the throttle valve body, an energy conversion and utilization mechanism arranged in the intake pipeline and a control mechanism which is respectively in communication connection with the throttle valve body and the energy conversion and utilization mechanism; the air inlet pipeline comprises an air inlet main pipeline and an air inlet auxiliary pipeline arranged beside the air inlet main pipeline; the air is conveyed to the engine through the air inlet main pipeline and the air inlet auxiliary pipeline; a butterfly valve is arranged in the main air inlet pipeline; the energy conversion and utilization mechanism comprises a first energy conversion unit arranged on the air inlet main pipeline and a second energy conversion unit arranged on the air inlet auxiliary pipeline; the control mechanism controls the states of the first energy conversion unit, the second energy conversion unit and the butterfly valve to adjust the airflow flow of the air inlet pipeline, converts and transmits the kinetic energy of the airflow, and then utilizes the transmitted energy; the problem that the air inlet energy of the engine cannot be well utilized can be solved.
Description
Technical Field
The invention belongs to the technical field of intake energy recovery of internal combustion engines, and particularly relates to a throttle control system and method based on intake energy recovery.
Background
Along with the increase of the appearance frequency of the haze weather, the environmental pollution causes high attention of people; energy conservation and emission reduction also become non-negligible targets in scientific and green development of various industries; the throttle valve is a controllable valve for controlling air to enter the engine and comprises a traditional stay wire type throttle valve and an electronic throttle valve; the gas is mixed with gasoline into combustible mixed gas after entering the gas inlet pipe, so that the combustible mixed gas is combusted to apply work; the throat of an automobile engine is called as the throat of the automobile engine, wherein an air filter is connected to the upper part of the throat; the throttle valve device is mainly used for correspondingly adjusting the opening according to the load and the rotating speed change of an engine and controlling the air inflow of the engine so as to meet the working performance requirement of the engine. The electronic throttle valve driven by the direct current motor has the advantages of simple structure, quick response, easiness in control and the like, so that the application is wider. However, the disadvantage is that the throttle effect on the air flow is such that a large amount of energy is lost and this energy is not used properly. Therefore, there is a need for a throttle control device that can solve the problem of the energy flowing through the throttle valve not being utilized.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides a throttle valve control system and a method based on intake energy recovery.A throttle valve body of an engine is internally provided with an intake pipeline, the intake pipeline is internally provided with an energy conversion and utilization mechanism, the throttle valve body and the energy conversion and utilization mechanism are respectively communicated and connected with a control mechanism, one end of the throttle valve body is connected with an air filter, the other end of the throttle valve body is connected with an engine cylinder body, the intake pipeline is designed to be communicated with a main intake pipeline and an auxiliary intake pipeline which are independent in the middle at two ends, and air is conveyed to the engine through the main intake pipeline and the auxiliary intake pipeline; a butterfly valve is arranged in the airflow separation section of the main air inlet pipeline; when the butterfly valve is closed, the butterfly valve is tightly jointed with the pipeline wall of the main air inlet pipeline, and at the moment, the airflow separation section of the main air inlet pipeline is in a cut-off mode, so that air cannot pass through; the energy conversion and utilization mechanism comprises a first energy conversion unit arranged on the air inlet auxiliary pipeline and a second energy conversion unit arranged on the air inlet main pipeline, the states of the first energy conversion unit, the second energy conversion unit and the butterfly valve are controlled by the control mechanism to adjust the flow rate of the air flow in the air inlet pipeline, the kinetic energy of the air flow is converted and transmitted, and then the transmitted energy is utilized; the energy conversion and utilization mechanism not only has the function of controlling the airflow flow of the air inlet pipeline, but also can utilize the energy in the throttling process on the device, and can solve the problem that the air inlet energy of the engine is not available and can be well utilized.
In order to achieve the above object, an aspect of the present invention provides a throttle control system based on intake air energy recovery, including a throttle body, an intake duct disposed in the throttle body, an energy conversion and utilization mechanism disposed in the intake duct, and a control mechanism in communication connection with the throttle body and the energy conversion and utilization mechanism, respectively; wherein the content of the first and second substances,
one end of the throttle body is connected with an air filter, and the other end of the throttle body is connected with an engine cylinder body; the air inlet pipeline comprises an air inlet main pipeline and an air inlet auxiliary pipeline arranged beside the air inlet main pipeline; the inside of the air inlet main pipeline is provided with a butterfly valve
The energy conversion utilization mechanism comprises a first energy conversion unit arranged on the air inlet auxiliary pipeline and a second energy conversion unit arranged on the air inlet main pipeline, wherein the first energy conversion unit comprises a first impeller arranged on the inner wall of the air inlet auxiliary pipeline, a first impeller shaft connected with the first impeller, a first transmission unit arranged on the first impeller shaft and a first motor connected with the first transmission unit; the second energy conversion unit comprises a second impeller arranged on the inner wall of the main air inlet pipeline, a second impeller shaft connected with the second impeller, a second transmission unit arranged on the second impeller shaft and a second motor connected with the second transmission unit; a power system management module is arranged in the control mechanism, and the working mode of the vehicle engine is judged through the power system management module; the control mechanism controls the power generation torque of the first motor and the second motor and the opening and closing of the butterfly valve, so that the gas flow of the gas inlet pipeline is adjusted, and further the gas inlet energy recovery of the engine is realized.
Further, the main air inlet pipeline comprises an air inlet section, an air flow separation section and an air flow converging section;
two ends of the air inlet auxiliary pipeline are respectively communicated with the air inlet main pipeline; the air inlet auxiliary pipeline and the air flow converging section are arranged separately; after entering the air inlet section, the airflow is separated, one part of the airflow continuously passes through the airflow separation section of the main air inlet pipeline, and the other part of the airflow passes through the auxiliary air inlet pipeline and then is converged into the airflow convergence section of the main air inlet pipeline to be converged with the airflow separation section; the air is conveyed to the engine through the air inlet main pipeline and the air inlet auxiliary pipeline.
Further, the butterfly valve is arranged in the airflow separation section of the main air inlet pipeline; when the butterfly valve is closed, the butterfly valve is tightly jointed with the pipeline wall of the airflow separation section on the main air inlet pipeline, and at the moment, the airflow separation section of the main air inlet pipeline is in a cut-off mode, so that air cannot pass through; when the butterfly valve is fully opened, the projection area of the butterfly valve to the cross section of the air inlet channel is minimum, air inlet resistance is minimum, and air can be ensured to enter the engine with maximum capacity.
Furthermore, the first impeller is connected with a first motor through the first impeller shaft and the first transmission unit, and the first motor is driven to rotate through the rotation of the first impeller so as to convert intake energy into electric energy;
the second impeller is connected with the second motor through a second impeller shaft and a second transmission unit, and the second motor is driven to rotate through the rotation of the second impeller, so that the intake energy is converted into electric energy.
Further, the control mechanism is connected with the butterfly valve, the first motor and the second motor through signal lines respectively.
Another aspect of the present invention provides a throttle control method based on intake air energy recovery, including the steps of:
s1: judging the working mode of the vehicle engine through the control mechanism, and controlling the butterfly valve, the first motor and the second motor to be closed respectively by the control mechanism when the engine is in a shutdown state; and
s2: when the engine is in an ignition starting state, the control mechanism controls the butterfly valve to be fully opened, and the first motor and the second motor are closed, so that the air inlet resistance of the air inlet auxiliary pipeline and the air inlet main pipeline is minimum, the air inlet of the engine with the maximum capacity is ensured, and the ignition starting resistance of the engine is further reduced; and
s3: when the engine is in an idling state, the control mechanism controls the butterfly valve and the second motor to be closed, controls and adjusts the power generation torque of the first motor according to the air inflow requirement of the engine, further controls the rotation speed of the first impeller, finally realizes the control of the air inflow, and ensures that the engine is in a stable idling rotation speed; and
s4: when the engine is in a load running state, the control mechanism controls the butterfly valve to be slowly opened until the butterfly valve is fully opened, and controls and adjusts the power generation torque of the second motor according to the air inflow requirement of the engine, so that the rotating speed of the second impeller is controlled, and finally the control of the air inflow is realized; meanwhile, the torque of the first motor is adjusted constantly, so that the first motor is ensured to work at a constant high-efficiency rotating speed, and the intake air energy is recovered continuously; and
s5: when the engine is in a reverse-dragging state, the control mechanism controls the butterfly valve to be fully opened, and meanwhile, the power generation torques of the first motor and the second motor are adjusted to be maximum, so that the maximum recovery of intake energy is ensured; and
s6: when the engine enters a load running state from a reverse dragging state, the control mechanism controls the butterfly valve to be fully opened, controls the power generation torque of the second motor to ensure that the difference value between the actual air input and the target air input is minimum, and controls the power generation rotating speed of the first motor to be smoothly switched to the high-efficiency power generation rotating speed within a calibrated time range;
s7: when the engine enters an idling state from a reverse dragging state, the control mechanism controls the butterfly valve and the second motor to be quickly closed, and controls the power generation torque of the first motor to ensure that the difference value between the actual air inflow and the target air inflow is minimum;
s8: when the engine is in a fuel cut-off flameout state, the control mechanism controls the butterfly valve to be closed, the first motor and the second motor are closed, and the air inlet flow is not controlled any more; when the engine enters a fuel cut-off and flameout state from any state, the control mechanism closes the butterfly valve, the first motor and the second motor, and simultaneously, the fuel cut-off of the engine enables the engine to flameout.
Further, step S3 includes the control unit calculating an actual intake air amount by reading data from the intake sensor, and subtracting the actual intake air amount from the target intake air amount, and controlling the first motor to generate torque by the control unit to minimize the difference between the actual intake air amount and the target intake air amount.
Further, step S4 includes the control unit calculating an actual intake air amount by reading data from the intake sensor, and calculating a difference with the target intake air amount, and controlling the second electric machine to generate electric torque by the control unit to minimize the difference between the actual intake air amount and the target intake air amount.
Further, the engine off-state-holding determination conditions in step S1 are: the engine is in a shutdown state at the previous moment, the whole vehicle is in a power-off state, the power system management module is requested to be in the shutdown state or the control mechanism is always in the power-off state.
Further, the judgment conditions for the engine to enter the ignition state in step S2 are: the engine is in a shutdown state at the previous moment and the power system management module requests the engine to ignite;
the conditions for determining that the engine has been idling in step S3 are: when the opening of the accelerator is 0% or the torque output by the engine requested by the control mechanism is 0 Nm;
the judgment conditions for the engine to enter the running state in step S4 are: the driver steps on the accelerator or the power management module requests the engine to output larger torque than the current state;
the judgment condition for the engine to enter the reverse-towing state in step S5 is: the vehicle is currently in a coasting state or the power management module requests the engine to rapidly reduce the rotating speed;
the judgment condition of the engine fuel cut-off and flame off in the step S8 is that the control mechanism is requested to be powered off or the power management module requests the engine to flame off.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) the invention relates to a throttle valve control system based on intake energy recovery, a method and a control method.A throttle valve body of an engine is internally provided with an intake pipeline, the intake pipeline is internally provided with an energy conversion and utilization mechanism, the throttle valve body and the energy conversion and utilization mechanism are respectively communicated and connected with a control mechanism, one end of the throttle valve body is connected with an air filter, the other end of the throttle valve body is connected with an engine cylinder body, the intake pipeline is designed to be communicated with an intake main pipeline and an intake auxiliary pipeline which are independent in the middle at two ends, and air is conveyed to the engine through the intake main pipeline and the intake auxiliary pipeline; a butterfly valve is arranged in the airflow separation section of the main air inlet pipeline; when the butterfly valve is closed, the butterfly valve is tightly jointed with the pipeline wall of the main air inlet pipeline, and at the moment, the airflow separation section of the main air inlet pipeline is in a cut-off mode, so that air cannot pass through; the energy conversion and utilization mechanism comprises a first energy conversion unit arranged on the air inlet auxiliary pipeline and a second energy conversion unit arranged on the air inlet main pipeline, the states of the first energy conversion unit, the second energy conversion unit and the butterfly valve are controlled by the control mechanism to adjust the flow rate of the air flow in the air inlet pipeline, the kinetic energy of the air flow is converted and transmitted, and then the transmitted energy is utilized; the energy conversion and utilization mechanism not only has the function of controlling the airflow flow of the air inlet pipeline, but also can utilize the energy in the throttling process on the device, and can solve the problem that the air inlet energy of the engine is not available and can be well utilized.
(2) The invention relates to a throttle valve control system, a method and a control method based on intake energy recovery.A control mechanism is internally provided with a power system management module, and the power system management module is used for judging the working mode of a vehicle engine, including shutdown, ignition start, idling, load operation, reverse dragging, flameout and other states; the control mechanism is connected with the butterfly valve, the first motor and the second motor through signal lines respectively; the control mechanism adjusts the gas flow of the gas inlet pipeline by controlling the power generation torques of the first motor and the second motor and the opening and closing of the butterfly valve, so that the gas inlet energy recovery is realized.
Drawings
FIG. 1 is a schematic structural diagram of a throttle control system based on intake air energy recovery according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a throttle control method based on intake air energy recovery according to an embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: the device comprises a 1-valve body, a 2-air inlet pipeline, a 21-main air inlet pipeline, a 211-air inlet section, a 212-air flow separation section, a 213-air flow convergence section, a 22-auxiliary air inlet pipeline, a 23-butterfly valve, a 3-energy conversion utilization mechanism, a 311-first impeller, a 312-first impeller shaft, a 313-first transmission unit, a 314-first motor, a 321-second impeller, a 322-second impeller shaft, a 323-second transmission unit, a 324-second motor and a 4-control mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, when an element is referred to as being "fixed to", "disposed on" or "provided on" another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element; the terms "mounted," "connected," and "provided" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
As shown in fig. 1, the present invention provides a throttle control system based on intake air energy recovery, which includes a throttle body 1, an intake duct 2 disposed in the throttle body 1, an energy conversion and utilization mechanism 3 disposed in the intake duct 2, and a control mechanism 4 in communication connection with the throttle body 1 and the energy conversion and utilization mechanism 3, respectively; one end of the throttle body 1 is connected with an air filter, and the other end of the throttle body is connected with an engine cylinder body; the air inlet pipeline 2 comprises an air inlet main pipeline 21 and an air inlet auxiliary pipeline 22 arranged beside the air inlet main pipeline 21; two ends of the air inlet auxiliary pipeline 22 are respectively communicated with the air inlet main pipeline 21; the main intake air pipe 21 comprises an intake section 211, an airflow separation section 212 and an airflow merging section 213; the auxiliary air inlet pipeline 22 and the air flow converging section 213 are separately arranged; after entering the air inlet section 211, the air flow is separated, one part of the air flow continues to pass through the air flow separation section 212 of the main air inlet pipeline 21, and the other part of the air flow passes through the auxiliary air inlet pipeline 22 and then is merged into the air flow merging section 213 of the main air inlet pipeline 21 to be merged with the air flow separation section 212; the air is conveyed to the engine through the air inlet main pipeline 21 and the air inlet auxiliary pipeline 22 together; a butterfly valve 23 is arranged in the airflow separation section 212 of the main intake pipeline 21; when the butterfly valve 23 is closed, it is tightly engaged with the duct wall of the air flow separation section 212 on the main intake duct 21, and at this time, the air flow separation section 212 of the main intake duct 21 is in a cut-off mode, and air cannot pass through; the energy conversion and utilization mechanism 3 comprises a first energy conversion unit arranged on the air inlet auxiliary pipeline 22 and a second energy conversion unit arranged on the air inlet main pipeline 21, the states of the first energy conversion unit, the second energy conversion unit and a butterfly valve are controlled by the control mechanism 4 to adjust the flow rate of the air flow in the air inlet pipeline 2, the kinetic energy of the air flow is converted and transmitted, and then the transmitted energy is utilized; the energy conversion and utilization mechanism 3 of the invention not only has the function of controlling the airflow flow of the air inlet pipeline, but also can utilize the energy in the throttling process on the device, and can solve the problem that the air inlet energy of the engine is not well utilized.
Further, as shown in fig. 1, the first energy conversion unit includes a first impeller 311 disposed on an inner wall of the auxiliary air intake duct 22, a first impeller shaft 312 connected to the first impeller 311, a first transmission unit 313 disposed on the first impeller shaft 312, and a first motor 314 connected to the first transmission unit 313; the second energy conversion unit comprises a second impeller 321 arranged on the inner wall of the main intake air pipe 21, a second impeller shaft 322 connected with the second impeller 321, a second transmission unit 323 arranged on the second impeller shaft 322, and a second motor 324 connected with the second transmission unit 323; the first impeller 311 of the present invention is connected to the first motor 314 through the first impeller shaft 312 and the first transmission unit 313, and the rotation of the first impeller 311 drives the first motor 314 to rotate, so that the intake energy is converted into electric energy; the second impeller 321 is connected to the second motor 324 through the second impeller shaft 322 and the second transmission unit 323, and the second motor 324 is driven to rotate by the rotation of the second impeller 321, so that the intake energy is converted into electric energy.
Further, as shown in fig. 1, a power system management module is arranged in the control mechanism 4, and the power system management module is used for judging the working modes of the vehicle engine, including shutdown, ignition start, idling, load running, reverse towing, flameout and other states; the control mechanism 4 is connected to the butterfly valve 23, the first motor 314, and the second motor 324 through signal lines; the control mechanism 4 regulates the gas flow rate of the gas inlet pipeline by controlling the power generation torques of the first motor 314 and the second motor 324 and the opening and closing of the butterfly valve 23, thereby realizing the gas inlet energy recovery.
As shown in fig. 2, another aspect of the present invention provides a throttle control method based on intake air energy recovery, including the steps of:
s1: the working mode of the vehicle engine is judged by the control mechanism 4, and when the engine is in a shutdown state, the control mechanism 4 controls the butterfly valve 23, the first motor 314 and the second motor 324 to be respectively closed; wherein, the engine continues to keep the shutdown state and the judgment conditions are as follows: the engine shutdown state keeping judgment conditions are as follows: the engine is in a shutdown state at the previous moment, the whole vehicle is in a power-off state, the power system management module is requested to be in the shutdown state or the control mechanism 4 is always in the power-off state;
s2: when the engine is in an ignition starting state, the control mechanism 4 controls the butterfly valve 23 to be fully opened, and the first motor 314 and the second motor 324 are closed; when the butterfly valve 23 is fully opened, the projection area of the butterfly valve 23 to the cross section of the air inlet channel is minimum, the air inlet resistance is minimum, the air can be ensured to be introduced by the engine with the maximum capacity, and the starting resistance is reduced; because the first motor 314 and the second motor 324 are closed, the first impeller shaft 312 and the first impeller 311 connected with the first motor 314, and the second impeller shaft 322 and the second impeller 321 connected with the second motor 324 can freely rotate at this time, that is, generating torque cannot be applied to the first impeller 311 and the second impeller 321, air intake of the air intake auxiliary pipeline and the air intake main pipeline cannot be obstructed, and then the minimum air intake resistance of the air intake auxiliary pipeline and the air intake main pipeline can be ensured; the judgment condition for the engine to enter the ignition state is as follows: the engine is in a shutdown state at the previous moment and the power system management module requests the engine to ignite;
s3: when the engine is in an idling state, the control mechanism 4 controls the butterfly valve 23 and the second motor 324 to close, controls and adjusts the power generation torque of the first motor 314 according to the air inflow requirement of the engine, further controls the rotation speed of the first impeller 311, finally realizes the control of the air inflow, and ensures that the engine is in a stable idling rotation speed; specifically, when the power management module of the control mechanism 4 judges that the engine is ignited successfully and enters an idling state, the control mechanism 4 controls the butterfly valve and the second motor to be closed, and controls the power generation torque of the first motor according to the air inflow requirement of the engine, and the basic rule is that the larger the torque is, the larger the provided air inflow resistance is, the smaller the air inflow is; the control mechanism 4 calculates the actual air inflow by reading the data of the air inlet sensor, and calculates the difference with the target air inflow, and controls the first motor to generate the torque by the control mechanism 4, so that the difference between the actual air inflow and the target air inflow is minimum; the judgment condition for the engine to enter the idle speed is as follows: the opening of the accelerator is 0% or the torque output by the engine requested by the control mechanism is 0 Nm;
s4: when the engine is in a load running state, the control mechanism 4 controls the butterfly valve 23 to be slowly opened until the butterfly valve is fully opened, controls and adjusts the power generation torque of the second motor 324 according to the air inflow requirement of the engine, further controls the rotating speed of the second impeller 321, and finally realizes the control of the air inflow; meanwhile, the torque of the first motor 314 is adjusted at any moment, so that the first motor 314 is ensured to work at a constant high-efficiency rotating speed, and the intake air energy is recovered continuously; specifically, when the power management module of the control mechanism 4 judges that the engine enters the running state from the idling state, the whole vehicle system has a dynamic change demand on the output power of the engine, in order to ensure that the output torque of the whole vehicle power system is linearly increased, in the process that the throttle control system based on the intake energy recovery of the invention is switched into the running state, the power generation torque of the second motor 324 is controlled at the maximum value, and then the butterfly valve 23 is slowly opened until the opening degree reaches the maximum value; in the process of slowly opening the butterfly valve 23, the effect of controlling the air inflow is achieved by controlling the power generation torque of the second motor 324, specifically, the control mechanism 4 calculates the actual air inflow by reading the data of the air inlet sensor on the air inlet pipeline, and calculates the difference between the actual air inflow and the target air inflow, and the control mechanism 4 controls the power generation torque of the second motor 324 to minimize the difference between the actual air inflow and the target air inflow; meanwhile, the first motor 314 is smoothly switched to a high-efficiency power generation rotating speed state within a calibration time; the triggering conditions for the engine to enter the running state are as follows: the driver steps on the accelerator or the power management module requests the engine to output larger torque than the current state;
s5: when the engine is in a reverse-dragging state, the control mechanism 4 controls the butterfly valve 23 to be fully opened, and simultaneously adjusts the generating torques of the first motor 314 and the second motor 324 to be maximum, so that the intake energy is recycled to the maximum extent and a larger reverse-dragging torque is provided for the engine; when the engine enters a reverse-dragging state from an operating state, namely the engine does not need to output power and external energy to drive the engine to rotate, the control mechanism 4 controls the butterfly valve 23 to be fully opened, and meanwhile, the power generation torques of the first motor 314 and the second motor 324 are adjusted to be maximum, so that the intake energy is recycled to the maximum degree and a larger reverse-dragging torque is provided for the engine. When the engine enters a reverse-dragging state from an idling state, the control mechanism 4 opens the butterfly valve, simultaneously adjusts the power generation torques of the 1 st motor and the 2 nd motor to the maximum, recovers the air inlet energy to the maximum extent and provides a larger reverse-dragging torque for the engine; the judgment condition for entering the anti-dragging state is as follows: judging whether the vehicle is in a sliding state or whether the power management module requests the engine to rapidly reduce the rotating speed;
s6: when the engine enters a load running state from a reverse dragging state, the control mechanism 4 controls the butterfly valve 23 to be fully opened, controls the power generation torque of the second motor 324 to ensure that the interpolation of the actual air input and the target air input is minimum, and controls the power generation rotating speed of the first motor 314 to be smoothly switched to the high-efficiency power generation rotating speed within a calibrated time range;
s7: when the engine enters an idling state from a reverse dragging state, the control mechanism 4 controls the butterfly valve 23 and the second motor 324 to be quickly closed, and controls the power generation torque of the first motor 314 to ensure that the difference value between the actual air inflow and the target air inflow is minimum; when the system does not meet the condition of the anti-dragging state, the system exits the anti-dragging state, and enters a load running state or an idle running state after exiting the anti-dragging state, and the power management module judges the load running state or the idle running state;
s8: when the engine is in a fuel cut-off and flameout state, namely the engine is about to stop, the butterfly valve 23, the first motor 314 and the second motor 324 are closed, and the air inlet flow is not controlled any more; when the engine enters a fuel cut-off and flameout state from any state, the control mechanism 4 closes the butterfly valve 23, the first motor 314 and the second motor 324, simultaneously, the fuel cut-off of the engine enables the engine to be flamed out, and the engine enters a shutdown state after flameout is completed; the judgment condition of the engine fuel cut-off and flameout is that the control mechanism 4 is requested to be powered off or the power management module requests the engine to be flameout;
s9: when the control mechanism 4 cannot judge that the current system is in any one of the above states, entering other states; the opening and closing state of the butterfly valve 23 is kept after entering other states, the power generation torque and the state of the first motor and the second motor are the same as the previous work period, and the operations of the butterfly valve 23, the first motor 314 and the second motor 324 are controlled according to the control method of each state after the other states are exited and entering any one of the states mentioned above.
The invention provides a working principle of a throttle valve control system based on intake energy recovery, which comprises the following steps: an air inlet pipeline 2 is arranged in a throttle body 1 of the engine, an energy conversion and utilization mechanism 3 is arranged in the air inlet pipeline 2, the throttle body 1 and the energy conversion and utilization mechanism 3 are respectively in communication connection with a control mechanism 4, one end of the throttle body 1 is connected with an air filter, the other end of the throttle body is connected with an engine cylinder body, the air inlet pipeline 2 is designed in a way that two ends of the air inlet pipeline are communicated with an air inlet main pipeline 21 and an air inlet auxiliary pipeline 22 which are independent in the middle, and air is conveyed to the engine through the air inlet main pipeline 21 and the air inlet auxiliary pipeline 22; a butterfly valve 23 is arranged in the airflow separation section of the main air inlet pipeline 21; when the butterfly valve 23 is closed, the butterfly valve is tightly jointed with the pipeline wall of the main air inlet pipeline 21, and at the moment, the airflow separation section of the main air inlet pipeline 21 is in a cut-off mode, so that air cannot pass through; the energy conversion and utilization mechanism 3 comprises a first energy conversion unit arranged on the air inlet auxiliary pipeline 22 and a second energy conversion unit arranged on the air inlet main pipeline 21, the states of the first energy conversion unit, the second energy conversion unit and a butterfly valve are controlled by the control mechanism 4 to adjust the air flow in the air inlet pipeline 2, the kinetic energy of the air flow is converted and transmitted, and then the transmitted energy is utilized; the energy conversion and utilization mechanism 3 has the function of controlling the airflow flow of the air inlet pipeline, can utilize the energy in the throttling process on the device, and can solve the problem that the air inlet energy of the engine cannot be well utilized; a power system management module is arranged in the control mechanism 4 and is used for judging the working modes of the vehicle engine, including shutdown, ignition starting, idling, load running, reverse dragging, flameout and other states; the control mechanism 4 is connected to the butterfly valve 23, the first motor 314, and the second motor 324 through signal lines; the control mechanism 4 regulates the gas flow of the gas inlet pipeline by controlling the power generation torques of the first motor 314 and the second motor 324 and the opening and closing of the butterfly valve 23, thereby realizing the gas inlet energy recovery; the switching condition of different states of the invention is to switch the states when the judging condition of the current state is not met and the judging condition of the other state is met.
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (10)
1. A throttle control system based on intake air energy recovery is characterized in that: the throttle valve comprises a throttle valve body (1), an air inlet pipeline (2) arranged in the throttle valve body (1), an energy conversion and utilization mechanism (3) arranged in the air inlet pipeline (2) and a control mechanism (4) which is respectively in communication connection with the throttle valve body (1) and the energy conversion and utilization mechanism (3); wherein the content of the first and second substances,
one end of the throttle body (1) is connected with an air filter, and the other end of the throttle body is connected with an engine cylinder body; the air inlet pipeline (2) comprises an air inlet main pipeline (21) and an air inlet auxiliary pipeline (22) arranged beside the air inlet main pipeline (21); a butterfly valve (23) is arranged in the main air inlet pipeline (21)
The energy conversion and utilization mechanism (3) comprises a first energy conversion unit arranged on the air inlet auxiliary pipeline (22) and a second energy conversion unit arranged on the air inlet main pipeline (21), wherein the first energy conversion unit comprises a first impeller (311) arranged on the inner wall of the air inlet auxiliary pipeline (22), a first impeller shaft (312) connected with the first impeller (311), a first transmission unit (313) arranged on the first impeller shaft (312) and a first motor (314) connected with the first transmission unit (313); the second energy conversion unit comprises a second impeller (321) arranged on the inner wall of the main air inlet pipe (21), a second impeller shaft (322) connected with the second impeller (321), a second transmission unit (323) arranged on the second impeller shaft (322) and a second motor (324) connected with the second transmission unit (323); a power system management module is arranged in the control mechanism (4), and the working mode of the vehicle engine is judged through the power system management module; the control mechanism (4) controls the power generation torques of the first motor (314) and the second motor (324) and the opening and closing of the butterfly valve (23), so that the gas flow of the air inlet pipeline (2) is adjusted, and further the air inlet energy recovery of the engine is realized.
2. The intake air energy recovery-based throttle control system according to claim 1, wherein: the main air inlet pipe (21) comprises an air inlet section (211), an air flow separation section (212) and an air flow converging section (213);
two ends of the air inlet auxiliary pipeline (22) are respectively communicated with the air inlet main pipeline (21); the air inlet auxiliary pipeline (22) and the air flow converging section (213) are arranged separately; the airflow is separated after entering the air inlet section (211), one part of the airflow continues to pass through the airflow separation section (212) of the main air inlet pipeline (21), and the other part of the airflow passes through the auxiliary air inlet pipeline (22) and then is converged into the airflow converging section (213) of the main air inlet pipeline (21) to be converged with the airflow separation section (212); air is jointly conveyed to the engine through the main air inlet pipeline (21) and the auxiliary air inlet pipeline (22).
3. The intake air energy recovery-based throttle control system according to claim 2, wherein: the butterfly valve (23) is arranged in the airflow separation section (212) of the main air inlet pipeline (21); when the butterfly valve (23) is closed, the butterfly valve is tightly jointed with the pipeline wall of the airflow separation section (212) on the main air inlet pipeline (21), and the airflow separation section (212) of the main air inlet pipeline (21) is in a cutoff mode, so that air cannot pass through; when butterfly valve (23) were opened fully, butterfly valve (23) are minimum to intake duct cross section projected area, and the resistance of admitting air is minimum, can guarantee that the engine admits air with the biggest ability.
4. The intake air energy recovery-based throttle control system according to claim 3, wherein: the first impeller (311) is connected with a first motor (314) through the first impeller shaft (312) and the first transmission unit (313), and the first motor (314) is driven to rotate through the rotation of the first impeller (311) so as to convert intake energy into electric energy;
the second impeller (321) is connected with the second motor (324) through a second impeller shaft (322) and a second transmission unit (323), and the second motor (324) is driven to rotate through the rotation of the second impeller (321), so that the intake energy is converted into electric energy.
5. The intake air energy recovery-based throttle control system according to claim 4, wherein: the control mechanism (4) is connected to the butterfly valve (23), the first motor (314), and the second motor (324) via signal lines, respectively.
6. A throttle control method based on intake air energy recovery, which is implemented by applying a throttle control system based on intake air energy recovery according to any one of claims 1 to 5, comprising the steps of:
s1: the working mode of the vehicle engine is judged through the control mechanism (4), and when the engine is in a shutdown state, the control mechanism (4) controls the butterfly valve (23), the first motor (314) and the second motor (324) to be closed respectively; and
s2: when the engine is in an ignition starting state, the control mechanism (4) controls the butterfly valve (23) to be fully opened, and the first motor (314) and the second motor (324) are closed, so that the air inlet resistance of the air inlet auxiliary pipeline and the air inlet main pipeline is minimum, the air inlet of the engine with the maximum capacity is ensured, and the ignition starting resistance of the engine is further reduced; and
s3: when the engine enters an idling state, the control mechanism (4) controls the butterfly valve (23) and the second motor (324) to be closed, controls and adjusts the power generation torque of the first motor (314) according to the air inflow requirement of the engine, further controls the rotating speed of the first impeller (311), finally realizes the control of the air inflow, and ensures that the engine is in a stable idling rotating speed; and
s4: when the engine enters a load running state, the control mechanism (4) controls the butterfly valve (23) to be slowly opened until the butterfly valve is fully opened, and controls and adjusts the generating torque of the second motor (324) according to the air inflow requirement of the engine, so that the rotating speed of the second impeller (321) is controlled, and finally the control of the air inflow is realized; meanwhile, the torque of the first motor (314) is adjusted at any time, so that the first motor (314) is ensured to work at a constant high-efficiency rotating speed, and the intake air energy is recovered continuously; and
s5: when the engine enters a reverse-dragging state, the control mechanism (4) controls the butterfly valve (23) to be fully opened, and meanwhile, the power generation torques of the first motor (314) and the second motor (324) are adjusted to be maximum, so that the maximum recovery of intake energy is ensured; and
s6: when the engine enters a load running state from a reverse dragging state, the control mechanism (4) controls the butterfly valve (23) to be fully opened, controls the second motor (324) to generate the torque to ensure that the difference value between the actual air inflow and the target air inflow is minimum, and controls the generating speed of the first motor (314) to be smoothly switched to the high-efficiency generating speed within a calibrated time range;
s7: when the engine enters an idling state from a reverse dragging state, the control mechanism (4) controls the butterfly valve (23) and the second motor (324) to be quickly closed, and controls the power generation torque of the first motor (314) to ensure that the difference value between the actual air inflow and the target air inflow is minimum;
s8: when the engine is in a fuel cut-off and flameout state, the control mechanism (4) controls the butterfly valve (23) to be closed, the first motor (314) and the second motor (324) to be closed, and the air intake flow is not controlled any more; when the engine enters a fuel cut-off and flameout state from any state, the control mechanism (4) closes the butterfly valve (23), the first motor (314) and the second motor (324), and simultaneously, fuel cut-off of the engine enables the engine to be flameout.
7. The throttle control method based on intake air energy recovery according to claim 6, wherein step S3 further comprises the control means (4) calculating an actual intake air amount by reading data from the intake air sensor and subtracting the actual intake air amount from the target intake air amount, and controlling the first motor generating torque by the control means (4) to minimize the difference between the actual intake air amount and the target intake air amount.
8. The throttle control method based on intake air energy recovery according to claim 7, wherein the step S4 further includes the control means (4) calculating an actual intake air quantity by reading data from an intake air sensor on the intake air duct and subtracting the actual intake air quantity from the target intake air quantity, and controlling the second electric motor (324) to generate electric power by the control means (4) to minimize the difference between the actual intake air quantity and the target intake air quantity.
9. The throttle valve control method based on intake air energy recovery according to claim 8, wherein the engine off-state-maintaining determination condition in step S1 is: the engine is in a shutdown state at the previous moment, the whole vehicle is in a power-off state or the state of the power system management module requesting the engine is shutdown; when the control mechanism (4) is in the power-off state all the time, the engine also keeps the shutdown state.
10. The throttle valve control method based on intake energy recovery according to claim 9, wherein the engine enters the ignition state in step S2 under the judgment conditions: the engine is in a shutdown state at the previous moment and the power system management module requests the engine to ignite;
the conditions for determining that the engine has been idling in step S3 are: the opening of the accelerator is 0% or the torque output by the engine requested by the control mechanism is 0 Nm;
the judgment conditions for the engine to enter the running state in step S4 are: the driver steps on the accelerator or the power management module requests the engine to output larger torque than the current state;
the judgment condition for the engine to enter the reverse-towing state in step S5 is: the vehicle is currently in a coasting state or the power management module requests the engine to rapidly reduce the rotating speed;
the judgment condition of the engine fuel cut and flame off in the step S8 is that the control mechanism (4) is requested to be powered off or the power management module requests the engine to flame off.
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| JPH06288247A (en) * | 1993-04-08 | 1994-10-11 | Toyota Motor Corp | Intake system of internal combustion engine |
| JPH08114127A (en) * | 1994-10-14 | 1996-05-07 | Takashi Adachi | Device for recovering negative pressure flow energy in intake pipe for internal combustion engine |
| CN103225549A (en) * | 2013-04-09 | 2013-07-31 | 浙江吉利汽车研究院有限公司杭州分公司 | Throttle valve device |
| DE102014216647A1 (en) * | 2014-08-21 | 2016-02-25 | Ford Global Technologies, Llc | Energy recovery in the supply air tract of an internal combustion engine |
| CN107654289A (en) * | 2016-07-25 | 2018-02-02 | 联合汽车电子有限公司 | Turbocharged engine pressure release energy-recuperation system and its energy reclaiming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06288247A (en) * | 1993-04-08 | 1994-10-11 | Toyota Motor Corp | Intake system of internal combustion engine |
| JPH08114127A (en) * | 1994-10-14 | 1996-05-07 | Takashi Adachi | Device for recovering negative pressure flow energy in intake pipe for internal combustion engine |
| CN103225549A (en) * | 2013-04-09 | 2013-07-31 | 浙江吉利汽车研究院有限公司杭州分公司 | Throttle valve device |
| DE102014216647A1 (en) * | 2014-08-21 | 2016-02-25 | Ford Global Technologies, Llc | Energy recovery in the supply air tract of an internal combustion engine |
| CN107654289A (en) * | 2016-07-25 | 2018-02-02 | 联合汽车电子有限公司 | Turbocharged engine pressure release energy-recuperation system and its energy reclaiming method |
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