CN108661838B - Hybrid electric vehicle and starting method, device and equipment of engine of hybrid electric vehicle - Google Patents
Hybrid electric vehicle and starting method, device and equipment of engine of hybrid electric vehicle Download PDFInfo
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- CN108661838B CN108661838B CN201810379036.3A CN201810379036A CN108661838B CN 108661838 B CN108661838 B CN 108661838B CN 201810379036 A CN201810379036 A CN 201810379036A CN 108661838 B CN108661838 B CN 108661838B
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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
- F02N11/0848—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
- F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a starting method of a hybrid electric vehicle engine, which comprises the steps of receiving a starting request for starting the engine; sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to a preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully. According to the method, the small rotating speed control is adopted, so that the generator starting teeth are completely attached to the engine flywheel teeth, and rotating speed fluctuation caused by inertia is reduced; and then starting target rotating speed control to enable the rotating speed of the engine to quickly reach the target rotating speed, so that rotating speed fluctuation is reduced, the gear shifting smoothness of the whole vehicle is improved, and the driving experience of a user is improved. In addition, the application also provides a starting device and equipment of the engine of the hybrid electric vehicle and the hybrid electric vehicle with the same technical effects.
Description
Technical Field
The invention relates to the technical field of plug-in hybrid electric vehicles, in particular to a starting method, a starting device and starting equipment of a hybrid electric vehicle engine and a hybrid electric vehicle.
Background
The increasing severity of energy crisis and environmental pollution problems makes new energy vehicles a necessary trend for the automotive industry to change. The plug-in hybrid electric vehicle has the advantages of a pure electric vehicle and a hybrid electric vehicle, can be charged through an external power grid, and can ensure the endurance mileage of the vehicle, so that the plug-in hybrid electric vehicle is highly concerned by vehicle enterprises and scientific research institutions.
The control method for starting the engine significantly affects the smoothness of the entire vehicle, but depends on the powertrain structure and the corresponding starting control method. In the present invention, the generator and the engine are rigidly linked, but a gap exists at the link, so that a gear control method for starting the engine becomes relatively complicated, and therefore, it is necessary to study a control method for starting the engine.
Disclosure of Invention
The invention aims to provide a method, a device and equipment for starting an engine of a hybrid electric vehicle and the hybrid electric vehicle, so as to solve the problem that the conventional hybrid electric vehicle is unsmooth in the starting process.
In order to solve the above technical problem, the present invention provides a method for starting an engine of a hybrid vehicle, comprising:
receiving a launch request to start the engine;
sending a preset first target rotating speed to an integrated combined power device so as to control the generator to operate at a low rotating speed;
when the situation that the generator runs according to the preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device;
and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully.
Optionally, the method further comprises:
and smoothing the target rotating speed by adopting first-order low-pass filtering.
Optionally, the method further comprises:
a first order low pass filter is used to smooth the maximum allowable positive and negative torques to be delivered to the integrated combined power plant.
Optionally, the preset second target rotating speed is the maximum value of the target power generation rotating speeds of the engine management system idle rotating speed request and the energy management request;
wherein, adopt
Determining the target generating speed, wherein NEM_objIs a target power generation rotation speed, ηeIs the thermal efficiency of the engine, PdrvFor the power demand of the driver, PaccPower consumed for low-voltage and high-voltage accessories, PbatFor the discharge power of the battery, Δ SOC is the difference between the current SOC and the target SOC, TeoptIs the optimal working torque of the engine.
Optionally, before the receiving a request to start the engine, further comprising:
sending a request for stopping oil injection to an engine management system;
further comprising, after the determining that the engine start is successful:
and sending an oil injection instruction to an engine management system.
The invention also provides a starting device of the engine of the hybrid electric vehicle, which is applied to a vehicle control unit and comprises the following components:
a receiving module for receiving a launch request to start an engine;
the first rotating speed control module is used for sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed;
the second rotating speed control module is used for sending a preset second target rotating speed to the integrated combined power device when the fact that the generator runs according to the preset first target rotating speed for a preset time is monitored;
and the starting module is used for judging that the engine is started successfully when the situation that the generator runs according to the preset second target rotating speed is monitored.
Optionally, the method further comprises:
and the first processing module is used for smoothing the target rotating speed by adopting first-order low-pass filtering.
Optionally, the method further comprises:
and the second processing module is used for smoothing the maximum allowable positive torque and the maximum allowable negative torque sent to the integrated combined power device by adopting first-order low-pass filtering.
The present invention also provides a starting apparatus of an engine of a hybrid vehicle, including: the integrated combined power device comprises a vehicle control unit and an integrated combined power device;
the vehicle control unit is used for receiving a starting request for starting an engine; sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to the preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully.
The invention also provides a hybrid electric vehicle which comprises the starting device of the engine of the hybrid electric vehicle.
The invention provides a starting method of a hybrid electric vehicle engine, which receives a starting request for starting the engine; sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to a preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully. According to the method, a rotating speed control mode is adopted in the starting process, the target rotating speed is executed in two stages, and the small rotating speed control is adopted firstly, so that the starting teeth of the generator can be completely attached to the flywheel teeth of the engine, and the rotating speed fluctuation caused by inertia is reduced; and then starting the target rotating speed control, so that the rotating speed of the engine can quickly reach the target rotating speed, the rotating speed fluctuation is reduced, the gear shifting smoothness of the whole vehicle is improved, and the driving experience of a user is improved. In addition, the application also provides a starting device and equipment of the engine of the hybrid electric vehicle and the hybrid electric vehicle with the same technical effects.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a flow chart of one embodiment of a method for starting an engine of a hybrid vehicle according to the present invention;
FIG. 2 is a flowchart illustrating engine starting of a series-parallel plug-in hybrid electric vehicle according to an embodiment of the present invention;
FIG. 3 is a timing chart of a method for controlling a series-parallel plug-in hybrid electric vehicle to start an engine according to an embodiment of the present invention;
fig. 4 is a block diagram showing a configuration of a starter of an engine of a hybrid vehicle according to an embodiment of the present invention;
fig. 5 is a block diagram of a starting apparatus of an engine of a hybrid vehicle according to the present application.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Fig. 1 shows a flowchart of an embodiment of a method for starting an engine of a hybrid electric Vehicle, where the method is applied to a Vehicle Control Unit (VCU), and may specifically include:
step S101: receiving a launch request to start the engine;
specifically, the vehicle controller may send an oil injection request of 0, a stop request of 0, and a start request of 1 to an integrated combined power System (EMS). And the vehicle control unit sends a rotating speed mode request to the integrated combined power device.
Step S102: sending a preset first target rotating speed to an integrated combined power device so as to control the generator to operate at a low rotating speed;
in the embodiment of the application, the first target rotating speed is a value smaller than the second target rotating speed, so that the generator starting teeth can be completely attached to the engine flywheel teeth.
Step S103: when the situation that the generator runs according to the preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device;
the preset second target rotating speed is the maximum value of the target power generation rotating speed of the idle rotating speed request and the energy management request of the engine management system;
wherein, adopt
Determining the target generating speed, wherein NEM_objIs a target power generation rotation speed, ηeIs the thermal efficiency of the engine, PdrvFor the power demand of the driver, PaccPower consumed for low-voltage and high-voltage accessories, PbatFor the discharge power of the battery, Δ SOC is the difference between the current SOC and the target SOC, TeoptIs the optimal working torque of the engine.
Step S104: and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully.
Specifically, when the actual rotating speed of the generator is greater than or equal to the target rotating speed minus a preset difference value and is maintained for a certain time, whether the engine is started successfully is judged.
The invention provides a starting method of a hybrid electric vehicle engine, which receives a starting request for starting the engine; sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to a preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully. According to the method, a rotating speed control mode is adopted in the starting process, the target rotating speed is executed in two stages, and the small rotating speed control is adopted firstly, so that the starting teeth of the generator can be completely attached to the flywheel teeth of the engine, and the rotating speed fluctuation caused by inertia is reduced; and then starting the target rotating speed control, so that the rotating speed of the engine can quickly reach the target rotating speed, the rotating speed fluctuation is reduced, the gear shifting smoothness of the whole vehicle is improved, and the driving experience of a user is improved.
Referring to fig. 2 and fig. 3, a flowchart and a timing chart of a control method for starting an engine of a series-parallel plug-in hybrid electric vehicle according to an embodiment of the present invention are described in further detail, where the method includes:
the vehicle control unit sends a fuel injection stopping request to an engine management system; the vehicle control unit sets a stop request sent to an engine management system to be 0, and meanwhile, a start request is sent to the engine management system; the vehicle control unit sends an operation mode request to an integrated combined power unit (IPU) to be a low-rotating-speed control mode.
The vehicle control unit sends a first target rotating speed N1 to the integrated combined power device; the vehicle control unit sends a maximum allowable positive torque T1Nm to the integrated combined power device; the minimum allowable negative torque is T2 Nm.
And after the vehicle control unit receives that the rotating speed of the generator is stabilized at the target rotating speed for a certain time, sending a starting second target rotating speed N2 to the integrated combined power device, wherein the rotating speed is the maximum value of the target generating rotating speeds of the idle rotating speed request and the energy management request of the integrated combined power device.
The target rotating speed of the integrated combined power device needs smoothing treatment, and the initial value of filtering is the actual rotating speed of the motor; the target speed may be smoothed using first order low pass filtering. The size of the filtering parameter is related to the temperature of the engine water, the target rotating speed and the actual rotating speed difference of the generator.
The maximum allowable positive torque sent by the vehicle control unit to the integrated combined power device is T3; the minimum allowable negative torque is T4; the maximum allowable positive torque and the minimum allowable negative torque sent by the vehicle control unit to the integrated combined power device need to be smoothed; a first order low pass filter is used to smooth the maximum allowable positive and negative torques to be delivered to the integrated combined power plant. Wherein the size of the filtering parameter is related to the difference between the target rotating speed and the actual rotating speed of the generator.
And when the rotating speed of the engine is greater than or equal to a certain value, the vehicle control unit sends an oil injection request to the integrated combined power device. And when the integrated combined power device feeds back that the engine is started successfully, and the actual rotating speed of the generator is greater than the target rotating speed minus the preset difference value and is maintained for a certain time, judging that the engine is started successfully.
The embodiment adopts the small rotating speed control, so that the starting gear of the generator can be completely attached to the flywheel gear of the engine, and the rotating speed fluctuation caused by inertia is reduced; by adopting starting target rotating speed control, the rotating speed of the engine can quickly reach the target rotating speed, and the gear shifting smoothness and the driving performance of the whole vehicle are improved.
The following describes a starting apparatus of a hybrid vehicle engine according to an embodiment of the present invention, and the following description of the starting apparatus of the hybrid vehicle engine and the above-described starting method of the hybrid vehicle engine may be referred to in correspondence with each other.
Fig. 4 is a block diagram of a starting apparatus of a hybrid vehicle engine according to an embodiment of the present invention, and referring to fig. 4, the starting apparatus of the hybrid vehicle engine may include:
a receiving module 100 for receiving a launch request to start an engine;
the first rotating speed control module 200 is used for sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed;
the second rotating speed control module 300 is configured to send a preset second target rotating speed to the integrated combined power plant when it is monitored that the generator operates according to the preset first target rotating speed for a preset time;
the starting module 400 is configured to determine that the engine is started successfully when it is monitored that the generator operates at the preset second target rotation speed.
Optionally, the starting apparatus for an engine of a hybrid vehicle provided in the embodiment of the present application may further include:
and the first processing module is used for smoothing the target rotating speed by adopting first-order low-pass filtering.
Optionally, the starting apparatus for an engine of a hybrid vehicle provided in the embodiment of the present application may further include:
and the second processing module is used for smoothing the maximum allowable positive torque and the maximum allowable negative torque sent to the integrated combined power device by adopting first-order low-pass filtering.
The starting apparatus of the hybrid vehicle engine of the present embodiment is used for implementing the aforementioned starting method of the hybrid vehicle engine, and therefore specific embodiments of the starting apparatus of the hybrid vehicle engine can be seen in the foregoing example portions of the starting method of the hybrid vehicle engine, for example, the receiving module 100, the first rotational speed control module 200, the second rotational speed control module 300, and the starting module 400 are respectively used for implementing steps S101, S102, S103, and S104 in the aforementioned starting method of the hybrid vehicle engine, so that specific embodiments thereof may refer to the description of corresponding respective partial embodiments, and are not repeated herein.
The invention provides a starting device of a hybrid electric vehicle engine, which receives a starting request for starting the engine; sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to a preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully. According to the method, a rotating speed control mode is adopted in the starting process, the target rotating speed is executed in two stages, and the small rotating speed control is adopted firstly, so that the starting teeth of the generator can be completely attached to the flywheel teeth of the engine, and the rotating speed fluctuation caused by inertia is reduced; and then starting the target rotating speed control, so that the rotating speed of the engine can quickly reach the target rotating speed, the rotating speed fluctuation is reduced, the gear shifting smoothness of the whole vehicle is improved, and the driving experience of a user is improved.
In addition, the present application also provides a starting device of a hybrid vehicle engine, as shown in fig. 5, the starting device of the hybrid vehicle engine provided by the present application includes: the integrated combined power device comprises a vehicle control unit 1 and an integrated combined power device 2;
the vehicle control unit 1 is used for receiving a starting request for starting an engine; sending a preset first target rotating speed to the integrated combined power device 2 so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to the preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; and when the generator is monitored to operate according to the preset second target rotating speed, judging that the engine is started successfully.
In addition, the application also provides a hybrid electric vehicle which comprises the starting device of the engine of any one hybrid electric vehicle.
According to the method, a rotating speed control mode is adopted in the starting process, the target rotating speed is executed in two stages, and the small rotating speed control is adopted firstly, so that the starting teeth of the generator can be completely attached to the flywheel teeth of the engine, and the rotating speed fluctuation caused by inertia is reduced; and then starting the target rotating speed control, so that the rotating speed of the engine can quickly reach the target rotating speed, the rotating speed fluctuation is reduced, the gear shifting smoothness of the whole vehicle is improved, and the driving experience of a user is improved.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
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.
The method, apparatus, device and apparatus for starting the engine of the hybrid vehicle according to the present invention and the hybrid vehicle have been described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (5)
1. A method of starting an engine of a hybrid vehicle, comprising:
receiving a launch request to start the engine;
sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed;
when the situation that the generator runs according to the preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device;
when the generator is monitored to operate according to the preset second target rotating speed, the engine is judged to be started successfully;
smoothing the target rotating speed by adopting first-order low-pass filtering;
smoothing the maximum allowable positive torque and the maximum allowable negative torque sent to the integrated combined power device by adopting first-order low-pass filtering;
the preset second target rotating speed is the maximum value of the target generating rotating speed of the idle rotating speed request and the energy management request of the engine management system;
wherein, adopt
Determining the target generating speed, wherein NEM_objIs a target power generation rotation speed, ηeIs the thermal efficiency of the engine, PdrvFor the power demand of the driver, PaccPower consumed for low-voltage and high-voltage accessories, PbatFor the discharge power of the battery, Δ SOC is the difference between the current SOC and the target SOC, TeoptIs the optimal working torque of the engine.
2. The method for starting an engine of a hybrid vehicle according to claim 1, further comprising, prior to said receiving a request to start the engine:
sending a request for stopping oil injection to an engine management system;
further comprising, after the determining that the engine start is successful:
and sending an oil injection instruction to an engine management system.
3. A hybrid vehicle engine starting device is applied to a vehicle control unit, and is characterized by comprising:
a receiving module for receiving a launch request to start an engine;
the first rotating speed control module is used for sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed;
the second rotating speed control module is used for sending a preset second target rotating speed to the integrated combined power device when the fact that the generator runs according to the preset first target rotating speed for a preset time is monitored;
the starting module is used for judging that the engine is started successfully when the situation that the generator runs at the preset second target rotating speed is monitored;
further comprising:
the first processing module is used for smoothing the target rotating speed by adopting first-order low-pass filtering;
further comprising:
the first processing module is used for smoothing the target rotating speed by adopting first-order low-pass filtering;
the preset second target rotating speed is the maximum value of the target generating rotating speed of the idle rotating speed request and the energy management request of the engine management system;
wherein, adopt
Determining the target generating speed, wherein NEM_objIs a target power generation rotation speed, ηeIs the thermal efficiency of the engine, PdrvFor the power demand of the driver, PaccPower consumed for low-voltage and high-voltage accessories, PbatFor the discharge power of the battery, Δ SOC is the difference between the current SOC and the target SOC, TeoptIs the optimal working torque of the engine.
4. A starting apparatus of an engine of a hybrid vehicle, characterized by comprising: the integrated combined power device comprises a vehicle control unit and an integrated combined power device;
the vehicle control unit is used for receiving a starting request for starting an engine; sending a preset first target rotating speed to the integrated combined power device so as to control the generator to operate at a low rotating speed; when the situation that the generator runs according to the preset first target rotating speed for a preset time is monitored, sending a preset second target rotating speed to the integrated combined power device; when the generator is monitored to operate according to the preset second target rotating speed, the engine is judged to be started successfully;
the vehicle control unit is further configured to:
smoothing the target rotating speed by adopting first-order low-pass filtering;
smoothing the maximum allowable positive torque and the maximum allowable negative torque sent to the integrated combined power device by adopting first-order low-pass filtering;
the preset second target rotating speed is the maximum value of the target generating rotating speed of the idle rotating speed request and the energy management request of the engine management system;
wherein, adopt
Determining the target generating speed, wherein NEM_objIs a target power generation rotation speed, ηeIs the thermal efficiency of the engine, PdrvFor the power demand of the driver, PaccPower consumed for low-voltage and high-voltage accessories, PbatFor the discharge power of the battery, Δ SOC is the difference between the current SOC and the target SOC, TeoptIs the optimal working torque of the engine.
5. A hybrid vehicle characterized by comprising the starting apparatus of an engine of a hybrid vehicle according to claim 4.
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| CN111055834B (en) * | 2019-11-19 | 2021-01-19 | 潍柴动力股份有限公司 | Series hybrid power system and engine starting control method thereof |
| CN113606075A (en) * | 2021-08-25 | 2021-11-05 | 联合汽车电子有限公司 | Method and device for detecting engine starting state of hybrid electric vehicle and storage medium |
| CN115013211A (en) * | 2022-06-01 | 2022-09-06 | 嘉兴中创航空技术有限公司 | Unmanned aerial vehicle multifunctional engine starting system |
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| CN106080581A (en) * | 2016-08-16 | 2016-11-09 | 潍柴动力股份有限公司 | A kind of hybrid vehicle and the engine start control method of this automobile |
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| CN108661838A (en) | 2018-10-16 |
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