CN113107733A - Mixed-motion cement mixer truck and engine control method and device thereof - Google Patents
Mixed-motion cement mixer truck and engine control method and device thereof Download PDFInfo
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- CN113107733A CN113107733A CN202110449586.XA CN202110449586A CN113107733A CN 113107733 A CN113107733 A CN 113107733A CN 202110449586 A CN202110449586 A CN 202110449586A CN 113107733 A CN113107733 A CN 113107733A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
- F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
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- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention relates to a hybrid cement mixer truck and a method and a device for controlling an engine of the hybrid cement mixer truck, and belongs to the technical field of engineering vehicles. The engine control method includes: detecting the voltage of a low-voltage storage battery and the rotating speed of the engine when the starting condition of the engine is met under the condition that the engine is shut down; if the voltage of the low-voltage storage battery is smaller than the voltage threshold value and the rotating speed of the engine is smaller than the starting rotating speed, controlling the high-voltage power battery to work; the high-voltage power battery drives the generator to rotate, and then drives the engine to rotate, and the engine is started. When the engine is started, the voltage of the low-voltage storage battery and the rotating speed of the engine are detected, and under the condition that the voltage of the low-voltage storage battery is lower and the engine cannot be started, the high-voltage power battery provides an energy source for starting the engine, so that the engine is directly started, and the complicated processes of replacing the storage battery and charging the storage battery are avoided.
Description
Technical Field
The invention relates to a hybrid cement mixer truck and a method and a device for controlling an engine of the hybrid cement mixer truck, and belongs to the technical field of engineering vehicles.
Background
The traditional cement mixer agitator tank rotation is by engine, power takeoff, hydraulic system, speed reducer, agitator tank, facial make-up mechanical control system constitution. In the processes of charging, waiting and discharging of the traditional cement mixer truck, an engine needs to rotate to provide hydraulic driving force to keep a tank body running, and the engine needs to work under an idling working condition for a long time and occupies more than 60% of the total working time, so that the defects of high oil consumption, insufficient combustion, poor emission and the like of the engine are caused.
Therefore, a hybrid cement mixer truck is proposed, a pure electric system in the hybrid cement mixer truck replaces an upper-mounted hydraulic system of a traditional cement mixer truck, and the pure electric system mainly comprises a generator, a generator controller (namely a motor controller in fig. 1), a tank body driving motor controller, a power battery, a high-voltage distribution box and an upper-mounted controller. The engine can extinguish when the mixed-motion cement mixer truck is used for loading, transporting, waiting and unloading, the power battery provides energy, the driving motor drives the tank body to operate, and the engine is restarted when the engine needs to be started. An engine starting system in an existing hybrid cement mixer is shown in fig. 1 and comprises a low-voltage storage battery, a starting relay, a direct-current starting motor and an engine flywheel, when an ignition lock starting signal START is effective and the engine needs to be started, the starting relay is closed, the low-voltage storage battery supplies power to the direct-current starting motor, the flywheel of the engine is driven to rotate, and therefore the engine is started.
However, when the vehicle is not started for a long time and the low-voltage storage battery has low electric quantity, the direct-current starter cannot drive the engine to start, and at the moment, the engine can be started only by searching for a group of charged storage batteries or an external charger to charge the storage batteries with power shortage, so that the mode is troublesome to operate and delays the working time of the vehicle.
Disclosure of Invention
The application aims to provide a hybrid cement mixer truck and an engine control method and device thereof, and aims to solve the problem that an existing engine is complex to start.
In order to achieve the above object, the present application provides a technical solution of a method for controlling an engine of a hybrid cement mixer, including the following steps:
1) detecting the voltage of a low-voltage storage battery and the rotating speed of the engine when the starting condition of the engine is met under the condition that the engine is shut down;
2) if the voltage of the low-voltage storage battery is smaller than the voltage threshold value and the rotating speed of the engine is smaller than the starting rotating speed, controlling the high-voltage power battery to work;
3) the high-voltage power battery drives the generator to rotate, and then drives the engine to rotate, and the engine is started.
In addition, the present application also provides a technical solution of a first engine control device for a hybrid cement mixer, where the control device includes a processor, a memory, and a computer program stored in the memory and operable on the processor, and the processor implements the engine control method for the hybrid cement mixer when executing the computer program.
The engine control method and the engine control device for the hybrid cement mixer truck have the beneficial effects that: when the engine is started, the voltage of the low-voltage storage battery and the rotating speed of the engine are detected, and under the condition that the voltage of the low-voltage storage battery is lower and the engine cannot be started, the high-voltage power battery provides an energy source for starting the engine, so that the engine is directly started, and the complicated processes of replacing the storage battery and charging the storage battery are avoided.
Further, in the method and the device for controlling the engine of the hybrid cement mixer truck, in order to ensure the vehicle driving requirement and the electric quantity of the high-voltage power battery, the meeting of the engine starting condition includes: the SOC of the high-voltage power battery is smaller than the SOC threshold value, or the vehicle is ready to run.
Further, in the engine control method and apparatus for a hybrid cement mixer, in order to accurately determine that the vehicle is ready to run, when the accelerator opening is greater than 0 or the clutch is depressed and the shift position is not neutral, it is determined that the vehicle is ready to run.
Further, in the engine control method and device for the hybrid cement mixer truck, after the engine is started, in order to avoid feeding of the high-voltage power battery, after the engine is started, if the SOC of the high-voltage power battery is detected to be smaller than the SOC threshold value, the engine drives the generator to generate power, and the generator charges the high-voltage power battery.
Further, in the method and the device for controlling the engine of the hybrid cement mixer, in order to avoid energy waste of the engine in the waiting processes of loading, unloading and temporary stopping, in the step 1), the engine shutdown condition includes that the gear is neutral, the hand brake is pulled up, the rotating speed of the cement tank is not equal to zero, and the SOC of the high-voltage power battery is greater than or equal to the SOC threshold value; or the vehicle speed is zero, the brake is effective, and the gear is neutral.
In addition, the application also provides a technical scheme of a second engine control method of the hybrid cement mixer, which comprises the following steps:
1) detecting the voltage of a low-voltage storage battery and the rotating speed of the engine when the starting condition of the engine is met under the condition that the engine is shut down;
2) if the voltage of the low-voltage storage battery is smaller than the voltage threshold, controlling the high-voltage power battery to work;
3) the high-voltage power battery drives the generator to rotate, and then drives the engine to rotate, and the engine is started.
In addition, the present application also provides a second technical solution of an engine control device for a hybrid cement mixer, where the control device includes a processor, a memory, and a computer program stored in the memory and operable on the processor, and the processor implements the engine control method for the hybrid cement mixer when executing the computer program.
The technical scheme of the engine control method and device for the second hybrid cement mixer truck has the beneficial effects that: according to the invention, when the engine is started, the voltage of the low-voltage storage battery is detected, when the voltage of the low-voltage storage battery is lower, the situation that the engine cannot be normally started is judged, and then the high-voltage power battery provides an energy source for starting the engine, so that the engine is directly started, the complicated processes of replacing the storage battery and charging the storage battery are avoided, and meanwhile, compared with the first control method, the scheme does not need to detect the rotating speed of the engine, the steps of trying to start the engine are reduced, and the starting efficiency is improved.
In addition, this application still provides the technical scheme of a muddy driving of cement trucd body, engine and engine control system, engine control system includes: the system comprises a low-voltage storage battery, a high-voltage power battery, a generator controller and an upper controller, wherein the generator is rigidly connected with an engine; the generator is connected with a generator controller, and the generator controller is connected with a high-voltage power battery; go up the dress controller and generator controller, engine, high-pressure power battery communication connection, still include:
the voltage acquisition device is used for detecting the voltage of the low-voltage storage battery;
the rotating speed acquisition device is used for acquiring the rotating speed of the engine;
the voltage acquisition device and the rotating speed acquisition device are connected with the input end of the upper-mounted controller, the upper-mounted controller comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, and the processor realizes the following steps when executing the computer program:
1) detecting the voltage of a low-voltage storage battery and the rotating speed of the engine when the starting condition of the engine is met under the condition that the engine is shut down;
2) if the voltage of the low-voltage storage battery is smaller than the voltage threshold value and the rotating speed of the engine is smaller than the starting rotating speed, controlling the high-voltage power battery to work;
3) the high-voltage power battery drives the generator to rotate, and then drives the engine to rotate, and the engine is started.
The technical scheme of the first mixed-action cement mixer truck has the beneficial effects that: the engine control system of the hybrid cement mixer truck is provided with the voltage acquisition device for detecting the voltage of the low-voltage storage battery and the rotating speed acquisition device for detecting the rotating speed of the engine, the upper controller detects the voltage of the low-voltage storage battery and the rotating speed of the engine when the engine is started, and under the condition that the voltage of the low-voltage storage battery is lower and the engine cannot be started, the high-voltage power battery provides an energy source for starting the engine to directly start the engine, so that the complicated processes of replacing the storage battery and charging the storage battery are avoided.
Further, in order to ensure the vehicle running requirement and the electric quantity of the high-voltage power battery, the meeting of the engine starting condition comprises: the SOC of the high-voltage power battery is smaller than the SOC threshold value, or the vehicle is ready to run.
Further, in order to accurately judge that the vehicle is ready to run, when the accelerator opening is larger than 0 or the clutch is depressed and the shift position is a non-neutral position, it is judged that the vehicle is ready to run.
Further, after the engine is started, in order to avoid feeding of the high-voltage power battery, if the SOC of the high-voltage power battery is detected to be smaller than the SOC threshold value after the engine is started, the engine drives the generator to generate power, and the generator charges the high-voltage power battery.
Further, in order to avoid energy waste of the engine in the waiting process of charging, discharging and temporary stopping, in the step 1), the engine shutdown condition includes that the gear is neutral, the hand brake is pulled up, the rotating speed of the cement tank is not equal to zero, and the SOC of the high-voltage power battery is greater than or equal to the SOC threshold value; or the vehicle speed is zero, the brake is effective, and the gear is neutral.
In addition, this application still provides the technical scheme of the muddy driving of second, muddy driving of stirring driving of including trucd body: the system comprises a low-voltage storage battery, a high-voltage power battery, a generator controller and an upper controller, wherein the generator is rigidly connected with an engine; the generator is connected with a generator controller, and the generator controller is connected with a high-voltage power battery; go up the dress controller and generator controller, engine, high-pressure power battery communication connection, still include:
the voltage acquisition device is used for detecting the voltage of the low-voltage storage battery;
the voltage acquisition device is connected with the input end of the upper-mounted controller, the upper-mounted controller comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, and the processor realizes a second engine control method of the hybrid cement mixer truck when executing the computer program.
The second technical scheme of the mixed-action cement mixer truck has the beneficial effects that: the engine control system of the hybrid cement mixer truck is provided with the voltage acquisition device for detecting the voltage of the low-voltage storage battery, the upper controller detects the voltage of the low-voltage storage battery when the engine is started, judges that the engine cannot be normally started when the voltage of the low-voltage storage battery is lower, provides an energy source for starting the engine through the high-voltage power battery, directly starts the engine, and avoids the complicated processes of replacing the storage battery and charging the storage battery. Simultaneously for a muddy water mud trucd mixer of thoughtlessly moving, this scheme need not to detect engine speed, has reduced the step that the engine tried to start, has improved start efficiency.
Drawings
FIG. 1 is a block diagram of a hybrid cement mixer engine starting system of the prior art;
FIG. 2 is a flow chart of a method of controlling an engine of the hybrid cement mixer vehicle of the present invention;
FIG. 3 is a flow chart of the engine shutdown during the loading and unloading process of the hybrid cement mixer truck of the present invention;
FIG. 4 is a flow chart of the engine start-up of the present invention during the loading and unloading process of the hybrid cement mixer truck;
FIG. 5 is a flow chart of the present invention with the engine off during temporary shut down of the hybrid cement mixer vehicle;
FIG. 6 is a flow chart of the engine starting of the present hybrid cement mixer vehicle during temporary shutdown;
fig. 7 is a schematic structural diagram of the engine control of the hybrid cement mixer vehicle according to the present invention.
Detailed Description
Example of a hybrid cement mixer:
the invention has the main conception that under the condition that the engine is not started up easily due to the low-voltage storage battery feed, the high-voltage power battery is adopted to provide an energy source for the engine start under the condition that the low-voltage storage battery has low voltage and the engine cannot be started: the high-voltage power battery provides electric quantity to drive the generator to rotate, and then the PTO drives the engine to rotate through the power takeoff, so that the engine is started. The invention adopts the mode that the high-voltage power battery assists the low-voltage storage battery to start the engine, thereby avoiding the problem that the conventional engine is complicated to start when the low-voltage storage battery feeds power.
A hybrid cement mixer comprises a mixer body, an engine and an engine control system shown in figure 1, wherein the control system comprises the engine, a generator controller (namely a motor controller), a high-voltage power battery, an upper controller, a voltage acquisition device, a rotating speed acquisition device (the voltage acquisition device and the rotating speed acquisition device are not shown in the figure) and a low-voltage storage battery starting system.
The low-voltage storage battery starting system comprises a low-voltage storage battery, a starting relay and a direct-current starting motor, wherein the direct-current starting motor is connected with a flywheel inside the engine and drives the engine to rotate through the flywheel. An engine controller ECU and a power Take-off PTO (Power Take off) are arranged in the engine; the high-voltage power battery comprises a battery assembly and a power battery controller. The positive and negative poles of the high-voltage power battery are connected with the direct current end of the motor controller through a direct current high-voltage wire, the alternating current end of the motor controller is connected with a generator (the generator is a three-phase alternating current generator), and the motor in the generator is rigidly connected with a power takeoff PTO in the engine. Meanwhile, the voltage acquisition device is used for detecting the voltage of the low-voltage storage battery; the rotating speed acquisition device is used for acquiring the rotating speed of the engine.
The relationship between the power takeoff PTO in the engine and the engine is: as the engine turns, power take-off PT0 takes power from the engine crankshaft gear; similarly, when the engine stops rotating, the PTO can also drive the engine to rotate through the power takeoff. Therefore, when the generator is required to generate electricity, the engine drives the generator to generate electricity through the PTO, and three-phase alternating current generated by the generator is converted into high-voltage direct current through the motor controller and stored in the high-voltage power battery; when the engine needs to be started, the high-voltage power battery provides electricity to drive the generator to rotate, and the PTO drives the engine to rotate, so that the engine is started.
The power battery controller is connected with the upper controller through a CAN bus and is used for monitoring the state of the high-voltage power battery, such as: residual capacity, voltage, current, etc.; the motor controller is connected with the upper controller through a CAN bus and is used for controlling the generating capacity of the generator, controlling the rotation of the generator and acquiring the state of the generator; and the engine controller ECU is connected with the upper-mounted controller through a CAN bus and used for controlling the engine and acquiring the state of the engine.
Meanwhile, the voltage acquisition device and the rotating speed acquisition device are connected with the input end of the upper-mounted controller, the upper-mounted controller comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, and the processor realizes the engine control method of the hybrid cement mixer truck shown in the figure 2 when executing the computer program, and the method comprises the following steps:
1) under the condition that the engine is shut down, when the starting condition of the engine is met, the upper-mounted controller detects the voltage of the low-voltage storage battery and the rotating speed of the engine;
2) if the voltage of the low-voltage storage battery is smaller than a voltage threshold value and the rotating speed of the engine is smaller than a starting rotating speed (namely the rotating speed is smaller than the minimum rotating speed required by starting when the engine is started), the upper controller controls the high-voltage power battery to work and controls the running mode of the generator to be a torque driving mode, the high-voltage power battery provides driving energy for the generator, so that the generator drives the engine to rotate through the PTO by using initial torque T, then the rotating speed of the engine is increased by increasing the driving torque, and when the rotating speed of the engine reaches the starting rotating speed and the starting rotating speed reaches an idling speed, the engine is.
The cement mixer truck usually needs to wait for a long time in the process of loading or unloading and also needs to wait in the process of temporary stopping due to the construction site environment and the scheduling of a mixing station, so the control method of the engine of the hybrid cement mixer truck is mainly used in the process of temporary stopping during loading, unloading and transportation.
Specifically, during the waiting period of charging and discharging, the engine is shut down using the method shown in fig. 3:
firstly, judging whether the vehicle is in the process of loading and unloading:
when the upper-mounted controller detects that the gear of the vehicle is in a neutral gear, the hand brake is pulled up, and the rotating speed of the cement tank is not equal to zero, the vehicle is indicated to be in a waiting process of loading and unloading at the moment;
and then, judging the SOC of the high-voltage power battery by the upper controller:
when the SOC of the high-voltage power battery is larger than or equal to the SOC threshold value, the electric quantity of the high-voltage power battery is enough to provide the power requirement of the cement tank, the upper-mounted controller sends a stop signal to the engine controller ECU through the CAN message, and the engine is controlled to be closed.
Of course, during the charge and discharge waiting period, if the engine has been shut down and it is necessary to start the engine, the engine is started using the method shown in fig. 4:
under the condition that the engine is shut down, judging the magnitude of the SOC of the high-voltage power battery:
when the SOC of the high-voltage power battery is smaller than the SOC threshold value, the SOC indicates that the electric quantity of the high-voltage power battery cannot provide the power requirement of the cement tank at the moment, the upper controller controls the high-voltage power battery to work, the running mode of the generator is controlled to be a torque driving mode, the high-voltage power battery provides driving energy for the generator, the generator drives the engine to rotate through the PTO by using initial torque T, then the rotating speed of the engine is increased by increasing the driving torque, and when the rotating speed of the engine reaches the starting rotating speed and the starting rotating speed reaches the idling speed, the engine is started. After the engine is started, the generator is driven to generate electricity through the PTO, three-phase alternating current generated by the generator is converted into high-voltage direct current through the motor controller and stored in the high-voltage power battery, and the high-voltage power battery is charged.
The hybrid cement mixer truck also needs other waiting processes such as temporary stopping in the transportation process, for example: when waiting for the traffic light and when the hybrid cement mixer temporarily stops, the engine is shut down by adopting the method shown in figure 5:
firstly, judging whether the vehicle is in the process of temporary parking:
when the upper controller detects that the vehicle speed is zero, the brake is effective and the gear is neutral, the vehicle is indicated to be in the waiting process of temporary parking at the moment;
and then, the upper mounted controller sends a stop signal to an engine controller ECU through a CAN message to control the engine to be closed.
Of course, during the waiting for the temporary stop, if the engine has been turned off, the vehicle is ready to run, and it is necessary to start the engine, the engine is started using the method shown in fig. 6:
in the case where the engine is off, it is judged whether the vehicle is running accurately:
when the opening degree of an accelerator is larger than 0 or a clutch is stepped and a gear is in a non-neutral gear, the vehicle is indicated to be ready to run at the moment, an upper controller controls a high-voltage power battery to work and controls a generator operation mode to be a torque driving mode, the high-voltage power battery provides driving energy for a generator, so that the generator drives an engine to rotate through a Power Takeoff (PTO) by using initial torque T, then the rotating speed of the engine is increased by increasing driving torque, and when the rotating speed of the engine reaches a starting rotating speed and the starting rotating speed reaches an idling speed, the engine is started;
after the engine is started, the power battery controller sends the SOC of the high-voltage power battery to the upper controller in real time, and when the SOC of the high-voltage power battery is smaller than the SOC threshold value, the generator is controlled to be in a power generation mode, and the high-voltage power battery is charged through the engine.
The starting of the engine is carried out after receiving the starting signal START which is divided into two types, one type is given by an ignition lock, and the other type is sent by an upper-mounted controller in the processes of charging, discharging and temporary stopping, namely the invention is not only suitable for the processes of charging, discharging and temporary stopping, but also suitable for detecting the voltage of a low-voltage storage battery and the engine speed after delaying for about 1 second after the ignition lock starting signal START is effective when the ignition lock starting signal START of a vehicle is effective and is ready for starting the engine, and in order to accurately detect the state of the low-voltage storage battery when the engine is started, the invention does not limit the time for starting the engine, namely the condition for meeting the starting of the engine.
In the above embodiment, when the engine is started, the determination condition for controlling the high-voltage power battery to provide energy is that the voltage of the low-voltage battery is smaller than the voltage threshold and the engine speed is smaller than the starting speed, which is generally a control process of the engine when the ignition lock starting signal START is valid, and if the engine speed does not reach the speed required when the engine is started, and basically the low-voltage battery has no capability to START the engine, the condition that the voltage threshold is set incorrectly to cause erroneous determination can be avoided through the two conditions. In another embodiment, the voltage of the low-voltage battery and the engine speed are related, and the low-voltage battery is insufficient in voltage, so that the engine cannot be started, so that whether the low-voltage battery can start the engine can be directly judged by the voltage of the low-voltage battery without considering whether the threshold setting is accurate, that is, when the engine starting condition is met, the voltage of the low-voltage battery is directly detected, and if the voltage of the low-voltage battery is smaller than the voltage threshold, the high-voltage power battery is controlled to operate. Of course, the rotation speed acquisition device is not required to be arranged on the basis of only detecting the voltage of the low-voltage storage battery.
The determination conditions such as the preparation for running, loading, and unloading of the vehicle are not limited to the above conditions, and the present invention is not limited thereto.
According to the invention, when the low-voltage storage battery is detected to have low electric quantity and the engine cannot be started, the electric quantity of the high-voltage power battery is used for assisting in starting the engine, so that the problem of complicated starting is avoided, and the engine is started more efficiently.
The embodiment of the control method of the engine of the hybrid cement mixer comprises the following steps:
the concrete implementation process and effect of the control method for the engine of the hybrid cement mixer truck are described in the above embodiments of the hybrid cement mixer truck, and are not described herein again.
The control device embodiment of the engine of the hybrid cement mixer comprises:
as shown in fig. 7, the control device for the engine of the hybrid cement mixer includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the processor implements a control method for the engine of the hybrid cement mixer when executing the computer program.
The concrete implementation process and effects of the control method for the engine of the hybrid cement mixer are described in the above embodiments of the hybrid cement mixer, and are not described herein again.
That is, the method in the above embodiments of the hybrid cement mixer vehicle should be understood that the flow of the control method of the engine of the hybrid cement mixer vehicle may be implemented by computer program instructions. These computer program instructions may be provided to a processor (e.g., a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus), such that the instructions, which execute via the processor, create means for implementing the functions specified in the method flow.
The processor referred to in this embodiment refers to a processing device such as a microprocessor MCU or a programmable logic device FPGA;
the memory of the present embodiment is used to store computer program instructions for implementing a method for controlling an engine of a hybrid cement mixer, and includes physical means for storing information, and typically, the information is digitized and then stored on a medium using an electrical, magnetic, or optical method. For example: various memories for storing information by using an electric energy mode, such as RAM, ROM and the like; various memories for storing information by magnetic energy, such as hard disk, floppy disk, magnetic tape, magnetic core memory, bubble memory, and U disk; various types of memory, CD or DVD, that store information optically. Of course, there are other ways of memory, such as quantum memory, graphene memory, and so forth.
The control device of the hybrid cement mixer engine, which is formed by the memory and the processor, which are used for storing the computer program instructions formed by the control method of the hybrid cement mixer engine, is realized by the processor executing the corresponding program instructions in the computer, and the computer can be realized by using a windows operating system, a linux system or other systems, for example, an android and an iOS system programming language in an intelligent terminal, and can be realized by processing logic based on a quantum computer.
As another embodiment, the control device of the engine of the hybrid cement mixer may further include other processing hardware, such as a database, a multi-level cache, a GPU, and the like.
Claims (9)
1. The engine control method of the hybrid cement mixer truck is characterized by comprising the following steps of:
1) detecting the voltage of a low-voltage storage battery and the rotating speed of the engine when the starting condition of the engine is met under the condition that the engine is shut down;
2) if the voltage of the low-voltage storage battery is smaller than the voltage threshold value and the rotating speed of the engine is smaller than the starting rotating speed, controlling the high-voltage power battery to work;
3) the high-voltage power battery drives the generator to rotate, and then drives the engine to rotate, and the engine is started.
2. The engine control method for a hybrid cement mixer vehicle according to claim 1, wherein said satisfying the engine start condition includes: the SOC of the high-voltage power battery is smaller than the SOC threshold value, or the vehicle is ready to run.
3. The engine control method of a hybrid cement mixer vehicle according to claim 2, characterized in that when the accelerator opening is larger than 0 or the clutch has been depressed and the shift position is non-neutral, it is judged that the vehicle is ready to run.
4. The engine control method of the hybrid cement mixer vehicle as claimed in claim 1, wherein after the engine is started, if it is detected that the SOC of the high voltage power battery is less than the SOC threshold value, the engine drives the generator to generate power, and the generator charges the high voltage power battery.
5. The engine control method of the hybrid cement mixer truck according to claim 1, wherein in the step 1), the engine off condition includes that the gear is neutral, the hand brake is pulled up, the rotation speed of the cement tank is not equal to zero, and the SOC of the high-voltage power battery is greater than or equal to the SOC threshold value; or the vehicle speed is zero, the brake is effective, and the gear is neutral.
6. The engine control method of the hybrid cement mixer truck is characterized by comprising the following steps of:
1) detecting the voltage of a low-voltage storage battery and the rotating speed of the engine when the starting condition of the engine is met under the condition that the engine is shut down;
2) if the voltage of the low-voltage storage battery is smaller than the voltage threshold, controlling the high-voltage power battery to work;
3) the high-voltage power battery drives the generator to rotate, and then drives the engine to rotate, and the engine is started.
7. An engine control apparatus for a hybrid cement mixer vehicle, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor implementing the engine control method for a hybrid cement mixer vehicle according to any one of claims 1-6 when executing the computer program.
8. A hybrid cement mixer vehicle comprising a mixer vehicle body, an engine and an engine control system, the engine control system comprising: the system comprises a low-voltage storage battery, a high-voltage power battery, a generator controller and an upper controller, wherein the generator is rigidly connected with an engine; the generator is connected with a generator controller, and the generator controller is connected with a high-voltage power battery; go up dress controller and generator controller, engine, high-pressure power battery communication connection, its characterized in that still includes:
the voltage acquisition device is used for detecting the voltage of the low-voltage storage battery;
the rotating speed acquisition device is used for acquiring the rotating speed of the engine;
the voltage acquisition device and the rotating speed acquisition device are connected with the input end of an upper-mounted controller, the upper-mounted controller comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, and the processor realizes the engine control method of the hybrid cement mixer truck according to any one of claims 1-5 when executing the computer program.
9. A hybrid cement mixer vehicle comprising a mixer vehicle body, an engine and an engine control system, the engine control system comprising: the system comprises a low-voltage storage battery, a high-voltage power battery, a generator controller and an upper controller, wherein the generator is rigidly connected with an engine; the generator is connected with a generator controller, and the generator controller is connected with a high-voltage power battery; go up dress controller and generator controller, engine, high-pressure power battery communication connection, its characterized in that still includes:
the voltage acquisition device is used for detecting the voltage of the low-voltage storage battery;
the voltage acquisition device is connected with an input end of an upper-mounted controller, the upper-mounted controller comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, and the processor realizes the engine control method of the hybrid cement mixer truck according to claim 6 when executing the computer program.
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