阅读说明：本技术 一种增程器发动机控制方法、控制装置、车辆及终端 (Range extender engine control method and device, vehicle and terminal ) 是由 霍元 王一戎 王翼腾 陈定邦 于 2019-08-27 设计创作，主要内容包括：本发明公开了一种增程器发动机控制方法,所述方法包括：获取增程器的目标输出功率；获取增程器发动机的当前温度；判断所述当前温度是否不小于温度阈值；若是,则控制所述增程器发动机以比所述目标输出功率低一级的输出功率工作。本发明还公开了一种增程器发动机控制装置,具有该装置的车辆及终端。采用本发明,具有能够适配增程器的工作特点,实现阶跃式地逐点限功率；能够主动对增程器发动机进行过温保护,当发动机工作温度过高时主动降低工作功率等优点。(The invention discloses a range extender engine control method, which comprises the following steps: acquiring target output power of the range extender; acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level. The invention also discloses a range extender engine control device, a vehicle with the range extender engine control device and a terminal with the range extender engine control device. The invention has the working characteristics of being adaptive to the range extender and realizes step-by-step point power limitation; the over-temperature protection can be actively carried out on the range extender engine, and the working power is actively reduced when the working temperature of the engine is overhigh.)

1. A range extender engine control method, comprising:

acquiring target output power of the range extender;

Acquiring the current temperature of the range extender engine;

Judging whether the current temperature is not less than a temperature threshold value;

If yes, controlling the range extender engine to work at an output power which is lower than the target output power by one level;

Wherein, the range extender has multi-stage constant power output power.

2. The range extender engine control method of claim 1, further comprising:

and if the current temperature is less than the temperature threshold value, controlling the range extender engine to work at the target output power.

3. The range extender engine control method of claim 1, wherein said obtaining a target output power of the range extender comprises:

acquiring the expected power of the whole vehicle controller;

And determining a target output power corresponding to the range extender according to the expected power.

4. The range extender engine control method of claim 3, wherein in determining a target output power corresponding to the range extender based on the expected power:

the target output power is the output power whose absolute value of the difference from the expected power is smallest;

Or the like, or, alternatively,

the target output power is the output power whose difference from the expected power is positive and minimum.

5. the range extender engine control method of claim 1, wherein the current temperature comprises a temperature at an outlet of the range extender engine and a temperature at a throttle of the range extender engine.

6. the range extender engine control method of claim 5, wherein said determining whether the current temperature is not less than a temperature threshold comprises:

Judging whether the temperature of the liquid outlet is not less than a first temperature threshold value;

judging whether the temperature at the throttle valve is not less than a second temperature threshold value;

and if the temperature of the outlet liquid is not less than a first temperature threshold value or the temperature of the throttle valve is not less than a second temperature threshold value, controlling the range extender engine to work at an output power which is one level lower than the target output power.

7. a range extender engine control apparatus, characterized in that the apparatus comprises:

the power acquisition module (101) is used for acquiring the target output power of the range extender;

a temperature acquisition module (102) for acquiring a current temperature of the range extender engine;

A judging module (103) for judging whether the current temperature is not less than a first threshold value;

And the processing module (104) is used for controlling the range extender engine to work at an output power which is lower than the target output power by one level if the current temperature is not less than a first threshold value.

8. A vehicle characterized by comprising the range extender engine control device (1) of claim 7.

9. The vehicle of claim 8, further comprising a range extender controller (4) and a vehicle control unit,

The range extender engine control device (1) is arranged in the range extender controller (4) or in the vehicle control unit.

10. a terminal, characterized by a processor and a memory; wherein the content of the first and second substances,

The processor is used for calling and executing the program stored in the memory;

The memory is for storing a program for: acquiring target output power of the range extender; acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level.

Technical Field

the invention relates to an engine control method, in particular to a range extender engine control method, and further relates to a range extender engine control device, a vehicle and a terminal.

background

the range extender can provide extra electric energy to enable the vehicle to obtain a longer running distance, the working mode of the range extender is that a fixed power point works, the engine controller controls the rotating speed of an engine system, the generator controller controls the torque of a generator, the engine controller and the generator are correspondingly calibrated and solidified in advance, and the engine controller and the generator are matched to realize the work of the corresponding power point.

Most of the existing thermal protection function modules of the range extender use or borrow protection logic in an original engine controller, and the thermal protection function modules are not well suitable for thermal protection of a range extender system, particularly thermal protection of an engine of the range extender. The engine heat protection of the traditional fuel vehicle is controlled by an engine controller, when the air inlet temperature or the water temperature is too high, the torque is actively reduced, the engine is protected, and only linear gradual power limitation can be realized; the range extender works at a fixed power point, and the linear gradual limit power cannot adapt to the power point, so that the thermal protection effect is poor.

Disclosure of Invention

the invention aims to provide a control method of an engine adapting to a range extender, so as to improve the thermal protection capability of the engine.

In order to solve the technical problem, the invention discloses a range extender engine control method, which comprises the following steps:

Acquiring target output power of the range extender;

Acquiring the current temperature of the range extender engine;

Judging whether the current temperature is not less than a temperature threshold value;

If yes, controlling the range extender engine to work at an output power which is lower than the target output power by one level;

Wherein, the range extender has multi-stage constant power output power.

further, the method further comprises:

And if the current temperature is less than the temperature threshold value, controlling the range extender engine to work at the target output power.

Further, the obtaining the target output power of the range extender includes:

acquiring the expected power of the whole vehicle controller;

and determining a target output power corresponding to the range extender according to the expected power.

Further, in the determining the target output power corresponding to the range extender according to the expected power, the following steps are carried out:

the target output power is the output power whose absolute value of the difference from the expected power is smallest;

Or the like, or, alternatively,

the target output power is the output power whose difference from the expected power is positive and minimum.

further, the current temperature includes a temperature at an outlet of the range extender engine and a temperature at a throttle of the range extender engine.

Further, the determining whether the current temperature is not less than a temperature threshold includes:

judging whether the temperature of the liquid outlet is not less than a first temperature threshold value;

and judging whether the temperature at the throttle valve is not less than a second temperature threshold value.

correspondingly, the invention also provides a range extender engine control device, which comprises:

the power acquisition module is used for acquiring the target output power of the range extender;

The temperature acquisition module is used for acquiring the current temperature of the range extender engine;

the judging module is used for judging whether the current temperature is not less than a first threshold value or not;

And the processing module is used for controlling the range extender engine to work at an output power which is lower than the target output power by one level if the current temperature is not less than a first threshold value.

Correspondingly, the invention also provides a vehicle which comprises the range extender engine control device.

further, the vehicle also comprises a range extender controller and a vehicle control unit,

the range extender engine control device is arranged in the range extender controller or the vehicle control unit.

Accordingly, the present invention also provides a computer storage medium having at least one instruction, at least one program, set of codes, or set of instructions stored therein, the at least one instruction, at least one program, set of codes, or set of instructions being loaded by a processor and executing the range extender engine control method as described above.

correspondingly, the invention also provides a terminal, a processor and a memory; wherein the content of the first and second substances,

The processor is used for calling and executing the program stored in the memory;

the memory is for storing a program for: acquiring target output power of the range extender; acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level.

By adopting the technical scheme, the method has the following beneficial effects: the control method can adapt to the working characteristics of the range extender, and realizes step-by-step point-by-point power limiting; the over-temperature protection can be actively carried out on the range extender engine, and the working power is actively reduced when the working temperature of the engine is overhigh; the thermal protection requirement can be actively fed back to the vehicle control unit in advance, the working condition requirement can be judged in advance, and the use requirement on the range extender is changed. The working reliability of the range extender is improved, and the service life of the engine of the range extender can be prolonged.

Drawings

in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart of a range extender engine control method of the present invention;

FIG. 2 is a flowchart of step S100 according to the present invention;

FIG. 3 is a schematic diagram of the engine control device of the range extender of the present invention;

FIG. 4 is a schematic diagram of the power harvesting module according to the present invention;

Fig. 5 is a schematic composition diagram of the range extender of the present invention.

The following is a supplementary description of the drawings: 1-range extender engine control means; 101-a power acquisition module; 1011-desired power acquisition submodule; 1012-a power determination module; 102-a temperature acquisition module; 103-a judgment module; 104-a processing module; 2-a range extender engine system; 201-range extender engine; 202-range extender engine controller; 3-a generator system; 301-a generator; 302-a generator controller; 4-range extender controller.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. 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.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.