CN110552801B - Parking regeneration control method and device for engineering machinery - Google Patents

Parking regeneration control method and device for engineering machinery Download PDF

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Publication number
CN110552801B
CN110552801B CN201910910949.8A CN201910910949A CN110552801B CN 110552801 B CN110552801 B CN 110552801B CN 201910910949 A CN201910910949 A CN 201910910949A CN 110552801 B CN110552801 B CN 110552801B
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parking regeneration
whole vehicle
rotating speed
transmission system
engine
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CN110552801A (en
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王兴元
王文豪
浦路
项秀梅
王晓萌
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking
    • B60W30/18127—Regenerative braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • 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
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • F02D2041/0022—Controlling intake air for diesel engines by throttle control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0404—Throttle position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0614—Actual fuel mass or fuel injection amount
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/101—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501—Vehicle speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/502—Neutral gear position
    • 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
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention provides a parking regeneration control method and a parking regeneration control device for engineering machinery, wherein the method comprises the following steps: acquiring running data of the whole vehicle; judging whether the whole vehicle meets the parking regeneration condition or not according to the operation data; when the parking regeneration condition is met, judging a used transmission system of the whole vehicle, and recording the transmission system as a target transmission system; acquiring a target parking regeneration parameter matched with the target transmission system; adjusting the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter; and when the whole vehicle running data reaches the target parking regeneration parameter, controlling the whole vehicle to enter a parking regeneration mode, so that the regeneration effect of the parking regeneration of the whole vehicle is improved.

Description

Parking regeneration control method and device for engineering machinery
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a parking regeneration control method and device for engineering machinery.
Background
In order to make the present solution more clear, the present application first explains the terms used in the present solution.
Parking regeneration: the whole vehicle is parked in situ, Diesel oil is injected into an exhaust pipe, the Diesel oil is oxidized on an Oxidation Catalyst (DOC) to release heat, and carbon particles in a particle trap (DPF) are burnt.
Mechanical transmission: the output power of the engine is transmitted to the driving wheel after passing through the clutch, the speed changer, the transmission shaft, the main speed reducer, the differential mechanism and the half shaft in sequence.
Hydraulic transmission: the output of the hydraulic transmission takes liquid as a medium to transmit power, namely, the power is transmitted by the kinetic energy generated by the liquid in the circulating process, and generally, the power is transmitted to a driving wheel after passing through a hydraulic torque converter, a transmission shaft, a final drive, a differential and a half shaft.
Hydraulic transmission: the hydraulic system is mainly realized by a swash plate type plunger variable displacement pump and a plunger motor, and generally adopts a closed hydraulic loop, takes hydraulic oil as a transmission medium, and transmits power through static pressure.
In the prior art, a transmission system of an engineering machine is generally divided into a mechanical transmission system, a hydraulic transmission system and a hydraulic transmission system, and the no-load loads of the whole vehicle corresponding to different transmission systems are different, and taking hydraulic transmission and mechanical transmission as examples, the no-load curves of the two systems are shown in fig. 1.
In the prior art, the same entire vehicle is usually configured with only one set of basic data, which may include parking regeneration rotation speed, air intake throttle opening, HC oil injection amount, etc., and the parking regeneration of the entire vehicle is realized by using the set of basic data, however, if the same basic data is used to simultaneously match the entire vehicle with three transmission systems, during parking regeneration, the parking regeneration requirements of the entire vehicles with different transmission systems cannot be well met by using the same parking regeneration rotation speed, air intake throttle opening, and HC oil injection, for example, the optimal basic data required by the hydraulic transmission system is a, the optimal basic data required by the hydraulic transmission system is B, and the optimal basic data required by the mechanical transmission system is C, so that the entire vehicle with multiple different transmission modes in the prior art is poor in regeneration effect during parking regeneration.
Disclosure of Invention
In view of this, embodiments of the present invention provide a parking regeneration control method and apparatus for a construction machine, so as to improve the parking regeneration effect of a construction machine vehicle to which multiple transmission systems are applied.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a parking regeneration control method of engineering machinery is applied to a whole vehicle with more than two transmission systems, and comprises the following steps:
acquiring running data of the whole vehicle;
judging whether the whole vehicle meets the parking regeneration condition or not according to the operation data;
when the parking regeneration condition is met, judging a used transmission system of the whole vehicle, and recording the transmission system as a target transmission system;
acquiring a target parking regeneration parameter matched with the target transmission system;
adjusting the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter;
and when the whole vehicle running data reaches the target parking regeneration parameter, controlling the whole vehicle to enter a parking regeneration mode.
Optionally, in the parking regeneration control method for an engineering machine, the determining a transmission system used by the entire vehicle includes:
acquiring the engine speed and the fuel injection quantity of the whole vehicle;
and searching a transmission system matched with the engine speed and the fuel injection quantity from a preset mapping table based on the engine speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Optionally, in the parking regeneration control method for an engineering machine, the determining a transmission system used by the entire vehicle includes:
acquiring the engine speed of the whole vehicle;
judging whether the value of the engine rotating speed is larger than a first preset rotating speed value or not;
when the engine rotating speed is greater than the first preset rotating speed value, recording the engine rotating speed as a first engine rotating speed;
when the engine rotating speed is lower than the first preset rotating speed value, generating a control instruction for increasing the engine rotating speed until the obtained engine rotating speed is higher than the first preset rotating speed value, and recording the increased engine rotating speed as a first engine rotating speed;
acquiring fuel injection quantity corresponding to the first engine rotating speed under a steady-state working condition;
and searching a transmission system matched with the first engine rotating speed and the fuel injection quantity from a preset mapping table based on the first engine rotating speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Optionally, in the parking regeneration control method for the engineering machine, the obtaining of the target parking regeneration parameter matched with the target transmission system includes:
acquiring a parking regeneration rotating speed, an air inlet throttle opening and an HC oil injection quantity which are matched with the target transmission system;
the adjusting of the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter comprises the following steps:
and adjusting the engine speed based on the parking regeneration speed, adjusting the opening value of an air inlet throttle valve based on the opening of the air inlet throttle valve, and adjusting the fuel injection quantity of an HC injection system based on the HC fuel injection quantity.
Optionally, in the parking regeneration control method for an engineering machine, when the entire vehicle is controlled to enter the parking regeneration mode, the method further includes:
generating a control instruction for locking a transmission mode of the whole vehicle so that a transmission system of the whole vehicle cannot be switched in the parking regeneration process;
and generating a control command for unlocking the transmission mode of the whole vehicle after detecting the parking regeneration is finished.
A parking regeneration control device for an engineering machine, which is applied to a whole vehicle with more than two transmission systems, comprises:
the operation parameter acquisition unit is used for acquiring the operation data of the whole vehicle;
the parking regeneration condition judging unit is used for judging whether the whole vehicle meets the parking regeneration condition or not according to the operation data;
the transmission system judgment unit is used for judging a transmission system used by the whole vehicle and recording the transmission system as a target transmission system when the parking regeneration condition is met;
a regeneration parameter acquisition unit for acquiring a target parking regeneration parameter matched with the target transmission system;
an operation parameter adjusting unit which adjusts vehicle operation data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter; and when the whole vehicle running data reaches the target parking regeneration parameter, generating a parking regeneration instruction for controlling the whole vehicle to enter a parking regeneration mode.
Optionally, in the parking regeneration control device for an engineering machine, the transmission system determining unit is specifically configured to:
acquiring the engine speed and the fuel injection quantity of the whole vehicle;
and searching a transmission system matched with the engine speed and the fuel injection quantity from a preset mapping table based on the engine speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Optionally, in the parking regeneration control device for an engineering machine, the transmission system determining unit is specifically configured to:
acquiring the engine speed of the whole vehicle;
judging whether the value of the engine rotating speed is larger than a first preset rotating speed value or not;
when the engine rotating speed is greater than the first preset rotating speed value, recording the engine rotating speed as a first engine rotating speed;
when the engine rotating speed is lower than the first preset rotating speed value, generating a control instruction for increasing the engine rotating speed until the obtained engine rotating speed is higher than the first preset rotating speed value, and recording the increased engine rotating speed as a first engine rotating speed;
acquiring fuel injection quantity corresponding to the first engine rotating speed under a steady-state working condition;
and searching a transmission system matched with the first engine rotating speed and the fuel injection quantity from a preset mapping table based on the first engine rotating speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Optionally, in the parking regeneration control device for an engineering machine, the regeneration parameter obtaining unit is specifically configured to:
acquiring a parking regeneration rotating speed, an air inlet throttle opening and an HC oil injection quantity which are matched with the target transmission system;
the adjusting of the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter comprises the following steps:
and adjusting the engine speed based on the parking regeneration speed, adjusting the opening value of an air inlet throttle valve based on the opening of the air inlet throttle valve, and adjusting the fuel injection quantity of an HC injection system based on the HC fuel injection quantity.
Optionally, the parking regeneration control device for a construction machine further includes:
the transmission system locking unit is used for generating a control instruction for locking the transmission mode of the whole vehicle when the whole vehicle is detected to enter the parking regeneration mode, so that the transmission system of the whole vehicle can not be switched in the parking regeneration process; and generating a control command for unlocking the transmission mode of the whole vehicle after detecting the parking regeneration is finished.
Based on the above technical solution, in the implementation of the above technical solution provided in the embodiments of the present invention, if it is detected that parking regeneration is required, first determining whether a vehicle condition of a whole vehicle meets a parking regeneration condition, when the parking regeneration condition is met, determining a transmission system used by the whole vehicle, marking the transmission system as a target transmission system, then obtaining a parking regeneration parameter (basic data mentioned in the background art) corresponding to the target transmission system, marking the parking regeneration parameter as a target parking regeneration parameter, then adjusting operation data of the whole vehicle according to the target parking regeneration parameter, and when the operation data of the whole vehicle reaches the target parking regeneration parameter, controlling the whole vehicle to enter a parking mode, it can be seen that in the parking regeneration process, operation data of the vehicle is adjusted according to the parking regeneration parameter adapted to the transmission system currently used by the vehicle, the regeneration effect of the parking regeneration of the whole vehicle is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart illustrating a parking regeneration control method for a construction machine according to an embodiment of the disclosure;
FIG. 2 is a flow chart illustrating a parking regeneration control method for a construction machine according to another embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating a parking regeneration control method for a construction machine according to another embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating a parking regeneration control method for a construction machine according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a parking regeneration control device for a construction machine according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the problem that parking regeneration of a whole vehicle in different transmission modes is realized by adopting basic data in the prior art, so that the parking effect is poor, the application provides a parking regeneration control method of an engineering machine, which is applied to the whole vehicle with more than two transmission systems, in particular to an ECU of the whole vehicle, and specifically, referring to FIG. 2, the method can comprise the following steps:
step S201: acquiring running data of the whole vehicle;
in the step, after the parking regeneration request is obtained, the operation data of the whole vehicle is obtained, and whether the whole vehicle meets the parking regeneration condition is judged based on the operation data of the whole vehicle;
the parking regeneration request can be generated by a driver of the whole vehicle through triggering a preset key in an operating room, and can also be generated by the ECU of the whole vehicle based on the running condition of the vehicle.
Step S202: judging whether the whole vehicle meets the parking regeneration condition or not according to the operation data;
and after the parking regeneration request is acquired, acquiring the running data of the whole vehicle, and judging whether the running data meets the preset parking condition or not by comparing the running data with the running data calibrated in advance.
The operation data can be obtained from an engine electronic control unit and a vehicle electronic control unit, the data can comprise vehicle state parameters and engine operation state parameters, whether the vehicle state parameters and the engine operation state parameters meet preset parking regeneration conditions or not is judged, and if the parking regeneration conditions are met, the subsequent processes are continuously executed.
The vehicle state parameters may include throttle opening, clutch state, handbrake state, gear, and vehicle speed. The accelerator opening signal, the clutch state and the hand brake state can be directly read from the ECU, the clutch state can be further obtained by the ECU through judging the state of a clutch switch, and the hand brake state can be further obtained by the ECU through judging the state of a hand brake switch; the gear and vehicle speed can be read directly from the VCU.
The vehicle state parameters may include a fuel temperature, a tank fuel remaining amount, etc., the fuel temperature being readable from the ECU and the tank fuel remaining amount being readable from the VCU.
The parking regeneration condition may be set by itself according to a parking demand.
Step S203: when the parking regeneration condition is met, judging a used transmission system of the whole vehicle, and recording the transmission system as a target transmission system;
in this step, when the state of the entire vehicle has satisfied the parking regeneration condition, it is determined whether the transmission system currently used by the entire vehicle, for example, whether the transmission system currently used by the entire vehicle is a mechanical transmission system, a hydraulic transmission system, or a hydraulic transmission system, and specifically, when it is determined which transmission system the entire vehicle is in, the specific determination manner may be set by the user. For example, the currently used transmission system of the whole vehicle can be determined by detecting the working states of the mechanical transmission system, the hydraulic transmission system and the hydraulic transmission system, and of course, in this way, a corresponding sensing device needs to be additionally arranged on the whole vehicle, which increases the system cost, and the maintenance cost is high, which also increases the complexity of the whole vehicle system. Therefore, the present application can determine the current transmission system of the whole vehicle through the engine speed and the no-load of the whole vehicle. Specifically, referring to fig. 3, the decision flow in determining the currently used transmission system of the entire vehicle is as follows:
step S301: acquiring the engine speed and the fuel injection quantity of the whole vehicle;
when the whole vehicle meets the parking regeneration condition, the whole vehicle is in an empty load state, and at the moment, the collected engine speed and the collected fuel injection quantity of the whole vehicle are also the engine speed and the fuel injection quantity of the whole vehicle in the empty load state;
as can be seen from fig. 1, in an empty load state, when the entire vehicle is in different transmission systems, the fuel injection amounts corresponding to the same engine speed are different, and the difference between the fuel injection amounts corresponding to different transmission systems is continuously increased with the increase of the engine speed, so that the possibility that the transmission system used by the entire vehicle can be determined by the engine speed and the fuel injection amount of the entire vehicle in the empty load state is provided.
Step S302: searching a transmission system matched with the engine speed and the fuel injection quantity from a preset mapping table based on the engine speed and the fuel injection quantity;
the preset mapping table stores fuel injection quantities corresponding to different traditional systems when the whole vehicle is at different rotating speeds. Before the scheme is executed, an MAP (MAP) graph of a mapping relation between the engine rotating speed and the fuel injection quantity in an empty load state matched with each transmission system can be pre-established, when the engine rotating speed and the fuel injection quantity in the empty load state are obtained, the engine rotating speed and the fuel injection quantity are directly substituted into the preset MAP, the MAP loading the engine rotating speed and the fuel injection quantity is searched, and the transmission system corresponding to the MAP is a transmission system currently used by the whole vehicle, namely a target transmission system.
Step S204: acquiring a target parking regeneration parameter matched with the target transmission system;
and after the target transmission system is determined, acquiring a pre-stored parking regeneration parameter matched with the target transmission system, and recording the parking regeneration parameter as a target parking regeneration parameter.
Step S205: adjusting the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter;
and after the target parking regeneration parameter is determined, adjusting the working state of each device in the whole vehicle according to the target parking regeneration parameter so that the working condition of each device meets the requirement of the target parking regeneration parameter.
In the technical solution disclosed in the embodiment of the present application, the parking regeneration parameter may include: the method comprises the steps of parking regeneration rotating speed, air inlet throttle valve opening and HC oil injection quantity, wherein the parking regeneration rotating speed refers to the rotating speed of an engine, the HC oil injection quantity refers to the oil injection quantity of an HC injection system, when the parking regeneration rotating speed, the air inlet throttle valve opening and the HC oil injection quantity contained in target parking regeneration parameters are obtained, the rotating speed of the engine is adjusted on the basis of the parking regeneration rotating speed so that the rotating speed of the engine reaches the parking regeneration rotating speed, the opening value of the air inlet throttle valve is adjusted on the basis of the opening value of the air inlet throttle valve so that the opening value of the air inlet throttle valve is adjusted to be the air inlet throttle valve opening required by the target parking regeneration parameters, and the oil injection quantity of the HC injection system is adjusted on the basis of the HC oil injection quantity so that the oil injection quantity of the HC injection system is adjusted to be the HC oil injection quantity required by the target parking regeneration parameters.
Step S206: and when the whole vehicle running data reaches the target parking regeneration parameter, controlling the whole vehicle to enter a parking regeneration mode.
According to the technical scheme disclosed by the embodiment of the application, when parking regeneration is required, firstly, whether the vehicle condition of the whole vehicle meets the parking regeneration condition is judged, when the parking regeneration condition is satisfied, the transmission system used by the whole vehicle is determined, the system is marked as a target transmission system, and then, after the parking regeneration parameters (basic data mentioned in the background art) corresponding to the target transmission system are obtained, the parking regeneration parameters are recorded as target parking regeneration parameters, then the whole vehicle operation data is adjusted according to the target parking regeneration parameters, when the running data of the whole vehicle reaches the target parking regeneration parameters, the whole vehicle is controlled to enter a parking mode, and therefore, in the parking regeneration process, the running data of the vehicle can be adjusted according to the parking regeneration parameters matched with the transmission system currently used by the vehicle, and the regeneration effect of the parking regeneration of the whole vehicle is improved.
Further, referring to fig. 1, under an empty load condition, oil injection amounts corresponding to the same engine speed are different, and as the engine speed increases, a difference between the oil injection amounts corresponding to different transmission systems also increases, that is, the oil injection amounts corresponding to different transmission systems at a lower engine speed are relatively close, so that when a transmission system currently used by the whole vehicle is determined, since the oil injection amounts corresponding to the transmission systems are relatively close, a situation of misjudgment may occur, for this, referring to fig. 4, in the above scheme, when a transmission system used by the whole vehicle is determined, specifically, the method may include:
step S401: acquiring the engine speed of the whole vehicle;
step S402: judging whether the value of the engine rotating speed is larger than a first preset rotating speed value or not;
the first preset rotation speed value can be set according to the user's requirement, for example, it can be set to 1600rpm, 2000rpm or other values.
Step S403: when the engine rotating speed is greater than the first preset rotating speed value, recording the engine rotating speed as a first engine rotating speed;
step S404: when the engine rotating speed is lower than the first preset rotating speed value, generating a control instruction for increasing the engine rotating speed until the obtained engine rotating speed is higher than the first preset rotating speed value, and recording the increased engine rotating speed as a first engine rotating speed;
when the engine speed is lower than the first preset speed value, a control instruction for increasing the engine speed is generated, and the engine speed is increased by adjusting the opening degree of an accelerator pedal or other modes until the engine speed is higher than the first preset speed value.
Step S405: acquiring fuel injection quantity corresponding to the first engine rotating speed under a steady-state working condition;
in the scheme, in order to ensure the reliability of the judgment result, the method is used for determining the engine speed and the fuel injection quantity of the transmission system currently used by the whole vehicle under the engine steady state condition. In contrast, in the above scheme, when the first engine speed is obtained, the operation condition of the engine needs to be analyzed, and the first engine speed and the corresponding fuel injection amount under the steady-state working condition are extracted.
Step S406: and searching a transmission system matched with the first engine rotating speed and the fuel injection quantity from a preset mapping table based on the first engine rotating speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Further, in the technical solution disclosed in the above embodiment of the present application, in order to prevent that, in the parking process, a user switches a transmission system used by the entire vehicle and causes a parking regeneration parameter not matching with the switched transmission system, in the technical solution disclosed in the above embodiment of the present application, when controlling the entire vehicle to enter the parking regeneration mode, the method further includes:
generating a control instruction for locking a transmission mode of the whole vehicle so that a transmission system of the whole vehicle cannot be switched in the parking regeneration process; and generating a control command for unlocking the transmission mode of the whole vehicle after detecting the parking regeneration is finished.
In the present embodiment, corresponding to the above method, the present application further discloses a parking regeneration control device for a construction machine, which may be applied to a complete vehicle having more than two transmission systems, and may be specifically applied to an ECU, and the details of the operation of each unit in the device refer to the details of the above method embodiment, and the parking regeneration control device for a construction machine provided by the embodiment of the present invention is described below, and the parking regeneration control device for a construction machine described below and the parking regeneration control device for a construction machine described above may be referred to correspondingly.
Referring to fig. 5, the apparatus may include:
the operation parameter acquisition unit 100 is used for acquiring operation data of the whole vehicle;
a parking regeneration condition judgment unit 200 for judging whether the entire vehicle satisfies a parking regeneration condition according to the operation data;
a transmission system judgment unit 300, configured to judge, when a parking regeneration condition is satisfied, a transmission system used for the entire vehicle, and record the transmission system as a target transmission system;
a regeneration parameter acquisition unit 400 for acquiring a target parking regeneration parameter matching the target transmission system;
an operation parameter adjusting unit 500 that adjusts vehicle operation data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter; and when the whole vehicle running data reaches the target parking regeneration parameter, generating a parking regeneration instruction for controlling the whole vehicle to enter a parking regeneration mode.
Corresponding to the method, the transmission system judgment unit is specifically configured to:
acquiring the engine speed and the fuel injection quantity of the whole vehicle;
and searching a transmission system matched with the engine speed and the fuel injection quantity from a preset mapping table based on the engine speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Corresponding to the method, the transmission system judgment unit is specifically configured to:
acquiring the engine speed of the whole vehicle;
judging whether the value of the engine rotating speed is larger than a first preset rotating speed value or not;
when the engine rotating speed is greater than the first preset rotating speed value, recording the engine rotating speed as a first engine rotating speed;
when the engine rotating speed is lower than the first preset rotating speed value, generating a control instruction for increasing the engine rotating speed until the obtained engine rotating speed is higher than the first preset rotating speed value, and recording the increased engine rotating speed as a first engine rotating speed;
acquiring fuel injection quantity corresponding to the first engine rotating speed under a steady-state working condition;
and searching a transmission system matched with the first engine rotating speed and the fuel injection quantity from a preset mapping table based on the first engine rotating speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
Corresponding to the above method, the regeneration parameter obtaining unit is specifically configured to:
acquiring a parking regeneration rotating speed, an air inlet throttle opening and an HC oil injection quantity which are matched with the target transmission system;
the adjusting of the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter comprises the following steps:
and adjusting the engine speed based on the parking regeneration speed, adjusting the opening value of an air inlet throttle valve based on the opening of the air inlet throttle valve, and adjusting the fuel injection quantity of an HC injection system based on the HC fuel injection quantity.
Corresponding to the method, the device can further comprise:
the transmission system locking unit is used for generating a control instruction for locking the transmission mode of the whole vehicle when the whole vehicle is detected to enter the parking regeneration mode, so that the transmission system of the whole vehicle can not be switched in the parking regeneration process; and generating a control command for unlocking the transmission mode of the whole vehicle after detecting the parking regeneration is finished.
For convenience of description, the above system is described with the functions divided into various modules, which are described separately. Of course, the functionality of the various modules may be implemented in the same one or more software and/or hardware implementations of the invention.
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 the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A parking regeneration control method of engineering machinery is applied to a whole vehicle with more than two transmission systems, and is characterized by comprising the following steps:
acquiring running data of the whole vehicle;
judging whether the whole vehicle meets the parking regeneration condition or not according to the operation data;
when the parking regeneration condition is met, judging a used transmission system of the whole vehicle, and recording the transmission system as a target transmission system; the transmission system used for judging the whole vehicle comprises: acquiring the engine speed and the fuel injection quantity of the whole vehicle; searching a transmission system matched with the engine speed and the fuel injection quantity from a preset mapping table based on the engine speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems;
acquiring a target parking regeneration parameter matched with the target transmission system;
adjusting the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter;
and when the whole vehicle running data reaches the target parking regeneration parameter, controlling the whole vehicle to enter a parking regeneration mode.
2. The parking regeneration control method for construction machinery according to claim 1, wherein the determining a transmission system used for the entire vehicle further includes:
acquiring the engine speed of the whole vehicle;
judging whether the value of the engine rotating speed is larger than a first preset rotating speed value or not;
when the engine rotating speed is greater than the first preset rotating speed value, recording the engine rotating speed as a first engine rotating speed;
when the engine rotating speed is lower than the first preset rotating speed value, generating a control instruction for increasing the engine rotating speed until the obtained engine rotating speed is higher than the first preset rotating speed value, and recording the increased engine rotating speed as a first engine rotating speed;
acquiring fuel injection quantity corresponding to the first engine rotating speed under a steady-state working condition;
and searching a transmission system matched with the first engine rotating speed and the fuel injection quantity from a preset mapping table based on the first engine rotating speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
3. The parking regeneration control method for a construction machine according to claim 1, wherein the acquiring a target parking regeneration parameter matching the target transmission system includes:
acquiring a parking regeneration rotating speed, an air inlet throttle opening and an HC oil injection quantity which are matched with the target transmission system;
the adjusting of the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter comprises the following steps:
and adjusting the engine speed based on the parking regeneration speed, adjusting the opening value of an air inlet throttle valve based on the opening of the air inlet throttle valve, and adjusting the fuel injection quantity of an HC injection system based on the HC fuel injection quantity.
4. The parking regeneration control method of the construction machine according to claim 1, wherein when the entire vehicle is controlled to enter the parking regeneration mode, the method further comprises:
generating a control instruction for locking a transmission mode of the whole vehicle so that a transmission system of the whole vehicle cannot be switched in the parking regeneration process;
and generating a control command for unlocking the transmission mode of the whole vehicle after detecting the parking regeneration is finished.
5. A parking regeneration control device for an engineering machine, applied to a vehicle having two or more transmission systems, is characterized by comprising:
the operation parameter acquisition unit is used for acquiring the operation data of the whole vehicle;
the parking regeneration condition judging unit is used for judging whether the whole vehicle meets the parking regeneration condition or not according to the operation data;
the transmission system judgment unit is used for judging a transmission system used by the whole vehicle and recording the transmission system as a target transmission system when the parking regeneration condition is met;
a regeneration parameter acquisition unit for acquiring a target parking regeneration parameter matched with the target transmission system;
an operation parameter adjusting unit which adjusts vehicle operation data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter; when the whole vehicle running data reaches the target parking regeneration parameter, generating a parking regeneration instruction for controlling the whole vehicle to enter a parking regeneration mode;
the transmission system judgment unit is specifically used for: acquiring the engine speed and the fuel injection quantity of the whole vehicle; and searching a transmission system matched with the engine speed and the fuel injection quantity from a preset mapping table based on the engine speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
6. The parking regeneration control device for a construction machine according to claim 5, wherein the transmission system determination unit is further configured to:
acquiring the engine speed of the whole vehicle;
judging whether the value of the engine rotating speed is larger than a first preset rotating speed value or not;
when the engine rotating speed is greater than the first preset rotating speed value, recording the engine rotating speed as a first engine rotating speed;
when the engine rotating speed is lower than the first preset rotating speed value, generating a control instruction for increasing the engine rotating speed until the obtained engine rotating speed is higher than the first preset rotating speed value, and recording the increased engine rotating speed as a first engine rotating speed;
acquiring fuel injection quantity corresponding to the first engine rotating speed under a steady-state working condition;
and searching a transmission system matched with the first engine rotating speed and the fuel injection quantity from a preset mapping table based on the first engine rotating speed and the fuel injection quantity, wherein the preset mapping table stores the fuel injection quantity corresponding to the whole vehicle at different rotating speeds under different traditional systems.
7. The parking regeneration control device for a construction machine according to claim 5, wherein the regeneration parameter acquiring unit is configured to:
acquiring a parking regeneration rotating speed, an air inlet throttle opening and an HC oil injection quantity which are matched with the target transmission system;
the adjusting of the whole vehicle running data corresponding to the target parking regeneration parameter based on the target parking regeneration parameter comprises the following steps:
and adjusting the engine speed based on the parking regeneration speed, adjusting the opening value of an air inlet throttle valve based on the opening of the air inlet throttle valve, and adjusting the fuel injection quantity of an HC injection system based on the HC fuel injection quantity.
8. The parking regeneration control device for a construction machine according to claim 5, further comprising:
the transmission system locking unit is used for generating a control instruction for locking the transmission mode of the whole vehicle when the whole vehicle is detected to enter the parking regeneration mode, so that the transmission system of the whole vehicle can not be switched in the parking regeneration process; and generating a control command for unlocking the transmission mode of the whole vehicle after detecting the parking regeneration is finished.
CN201910910949.8A 2019-09-25 2019-09-25 Parking regeneration control method and device for engineering machinery Active CN110552801B (en)

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CN114263544B (en) * 2021-12-28 2023-03-21 柳州柳工挖掘机有限公司 Parking regeneration control method for engineering vehicle
CN114837779B (en) * 2022-04-28 2023-08-15 郑州日产汽车有限公司 DPF parking regeneration starting method, system, vehicle and computer readable storage medium

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