阅读说明：本技术 一种双起动机起动过程的控制方法及发动机 (Control method for starting process of double starters and engine ) 是由 陈月春 李素婷 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种双起动机起动过程的控制方法及发动机,涉及发动机技术领域。该双起动机起动过程的控制方法包括以下步骤：双起动机同时起动后,实时监测发动机转速；若发动机转速大于等于最小起动转速,且小于起动机退出的标定转速时,控制其中一台起动机退出。该双起动机起动过程的控制方法在低温环境下,控制双起动机同时起动,当发动机转速大于等于最小起动转速时,双起动机能够克服起动阻力矩。此时为防止两台起动机同时工作造成的电量消耗量大,允许一台起动机先退出。在满足双起动机起动效果的同时,降低了整车电量消耗,同时降低了两台起动机同时发生故障的概率。(The invention discloses a control method for a starting process of a double starter and an engine, and relates to the technical field of engines. The control method of the starting process of the double starters comprises the following steps: after the double starters are started simultaneously, monitoring the rotating speed of the engine in real time; and if the rotating speed of the engine is greater than or equal to the minimum starting rotating speed and is less than the calibrated rotating speed for exiting the starter, controlling one starter to exit. The control method for the starting process of the double starters controls the double starters to start simultaneously in a low-temperature environment, and when the rotating speed of the engine is greater than or equal to the minimum starting rotating speed, the double starters can overcome starting resistance moment. At this time, in order to prevent the large electric quantity consumption caused by the simultaneous operation of the two starters, one starter is allowed to exit first. The starting effect of the double starters is met, the electric quantity consumption of the whole vehicle is reduced, and the probability that the two starters break down simultaneously is reduced.)

1. A method of controlling a dual starter starting process, comprising:

after the double starters are started simultaneously, monitoring the rotating speed of the engine in real time;

and if the rotating speed of the engine is greater than or equal to the minimum starting rotating speed and is less than the calibrated rotating speed for exiting the starter, controlling one starter to exit.

2. The method of controlling a dual starter starting process according to claim 1, further comprising: and when the engine speed is greater than or equal to the calibrated speed at which the starter exits, controlling the other starter to exit.

3. The method of controlling a dual starter starting process of claim 1 wherein the dual starter is powered by a first battery.

4. The method for controlling a dual starter starting process according to claim 3, wherein the step of controlling one of the starters to exit if the engine speed is greater than or equal to the minimum starting speed and less than the calibrated starter exiting speed comprises:

detecting a voltage value of a first battery cell;

and when the voltage value of the first battery is greater than or equal to the minimum allowable voltage value of the first battery, controlling any one starter to exit.

5. The method of claim 4, wherein when the voltage of the first battery is less than the minimum allowable voltage of the first battery, two starters are controlled to exit simultaneously.

6. The method of claim 1, wherein one of the starters is powered by a second battery and the other starter is powered by a third battery.

7. The method for controlling a dual starter starting process according to claim 6, wherein the step of controlling one of the starters to exit if the engine speed is greater than or equal to the minimum starting speed and less than a calibrated starter exiting speed comprises:

detecting the voltage value of the second battery and the voltage value of the third battery;

and if the voltage value of the second storage battery is greater than or equal to the minimum allowable voltage value of the second storage battery, and the voltage value of the third storage battery is greater than or equal to the minimum allowable voltage value of the third storage battery, controlling any starter to exit.

8. The method for controlling the starting process of the dual starter as claimed in claim 7, wherein if the voltage value of the second battery is smaller than the minimum allowable voltage value of the second battery and the voltage value of the third battery is greater than or equal to the minimum allowable voltage value of the third battery, the starter powered by the second battery is controlled to exit;

and if the voltage value of the second storage battery is greater than or equal to the minimum allowable voltage value of the second storage battery, and the voltage value of the third storage battery is smaller than the minimum allowable voltage value of the third storage battery, controlling a starter powered by the third storage battery to quit.

9. The method for controlling the starting process of a dual starter as claimed in claim 7, wherein if the voltage value of the second battery is smaller than the minimum allowable voltage value of the second battery and the voltage value of the third battery is smaller than the minimum allowable voltage value of the third battery, the two starters are controlled to exit simultaneously.

10. An engine comprising a dual starter that controls engine starting using the method of controlling a dual starter starting process according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of engines, in particular to a control method for a starting process of a double starter and an engine.

Background

In order to improve the starting capability of the engine in a low-temperature environment, two starters are generally installed on the engine at the same time for providing a larger starting torque during the starting process of the engine, and the starting scheme is called as a double-starter starting scheme. However, the two starters work simultaneously, the electric quantity consumption of the whole vehicle can be greatly increased, the service life of the storage battery is shortened, the two starters work simultaneously for a long time, and the probability of burning out the starters is also high.

In the prior art, a control method of a dual starter is a starter control strategy based on temperature selection. When the ECU judges that the environmental temperature is too low, a double-starter scheme is adopted to ensure the starting effect of the engine; when the temperature is high, in order to avoid energy waste caused by simultaneous working of the double starters and ensure the reliability of the starters, a single starter starting mode can be adopted. However, the prior art only limits the control modes of the starter under different environmental temperatures. Under the low-temperature environment, the starting mode is still a double-starter starting scheme, and in the double-starter starting scheme, how to reduce the electric quantity consumption of the whole vehicle and the probability of the simultaneous failure of the double starters are problems to be solved urgently.

Disclosure of Invention

The invention aims to provide a control method for a starting process of a double starter and an engine, which can reduce the electric quantity consumption of a whole vehicle and reduce the probability of simultaneous failure of the double starters when the double starters are started.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of controlling a dual starter starting process, comprising:

after the double starters are started simultaneously, monitoring the rotating speed of the engine in real time;

and if the rotating speed of the engine is greater than or equal to the minimum starting rotating speed and is less than the calibrated rotating speed for exiting the starter, controlling one starter to exit.

As an alternative to the control method of the dual starter starting process, the control method of the dual starter starting process further includes: and when the engine speed is greater than or equal to the calibrated speed at which the starter exits, controlling the other starter to exit.

As an alternative to the control method of the starting process of the dual starter, the dual starter is supplied with power by means of a first battery.

As an alternative to the control method for the starting process of the dual starters, if the engine speed is greater than or equal to the minimum starting speed and less than the calibrated speed at which the starter exits, the step of controlling one starter to exit includes:

detecting a voltage value of a first battery cell;

and when the voltage value of the first battery is greater than or equal to the minimum allowable voltage value of the first battery, controlling any one starter to exit.

As an alternative of the control method of the starting process of the double starters, when the voltage value of the first battery is smaller than the allowable minimum voltage value of the first battery, the two starters are controlled to exit simultaneously.

As an alternative to the control method of the starting process of the dual starters, one starter is powered by the second battery, and the other starter is powered by the third battery.

As an alternative to the control method for the starting process of the dual starters, if the engine speed is greater than or equal to the minimum starting speed and less than the calibrated speed at which the starter exits, the step of controlling one starter to exit includes:

detecting the voltage value of the second battery and the voltage value of the third battery;

and if the voltage value of the second storage battery is greater than or equal to the minimum allowable voltage value of the second storage battery, and the voltage value of the third storage battery is greater than or equal to the minimum allowable voltage value of the third storage battery, controlling any starter to exit.

As an alternative of the control method for the starting process of the double starters, if the voltage value of the second battery is smaller than the minimum allowable voltage value of the second battery, and the voltage value of the third battery is greater than or equal to the minimum allowable voltage value of the third battery, the starter powered by the second battery is controlled to exit;

and if the voltage value of the second storage battery is greater than or equal to the minimum allowable voltage value of the second storage battery, and the voltage value of the third storage battery is smaller than the minimum allowable voltage value of the third storage battery, controlling a starter powered by the third storage battery to quit.

As an alternative of the control method for the starting process of the double starters, if the voltage value of the second battery is smaller than the minimum allowable voltage value of the second battery, and the voltage value of the third battery is smaller than the minimum allowable voltage value of the third battery, the two starters are controlled to exit simultaneously.

An engine comprising a dual starter, said dual starter controlling engine starting using a method of controlling a dual starter starting process according to any of the above aspects.

The invention has the beneficial effects that:

the control method for the starting process of the double starters provided by the invention monitors the rotating speed of the engine in real time after the double starters are started simultaneously, and controls one starter to quit if the rotating speed of the engine is greater than or equal to the minimum starting rotating speed and is less than the calibrated rotating speed for quitting the starter. The control method for the starting process of the double starters controls the double starters to start simultaneously in a low-temperature environment, and when the rotating speed of the engine is greater than or equal to the minimum starting rotating speed, the double starters can overcome starting resistance moment. At this time, in order to prevent the large electric quantity consumption caused by the simultaneous operation of the two starters, one starter is allowed to exit first. The starting effect of the double starters is met, the electric quantity consumption of the whole vehicle is reduced, and the probability that the two starters break down simultaneously is reduced.

The invention provides an engine and a control method for the starting process of the double starters. When the engine is started at a low temperature, the starting capability of the engine in a low-temperature environment can be met, the starting effect of the double starters is achieved, the electric quantity consumption of the whole vehicle can be reduced, and the probability that the two starters simultaneously break down is reduced.

Drawings

FIG. 1 is a flow chart of a method for controlling a dual starter starting process according to an embodiment of the present invention;

FIG. 2 is a flowchart of a control method for controlling one starter to exit during a dual starter starting process according to an embodiment of the present invention;

fig. 3 is a flowchart of a control method for controlling exit of one starter in a dual-starter starting process according to a second embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Engine starting is generally divided into three phases: a drag-down phase, a start-up phase and an idle phase. Wherein, the drag-down stage is the most main stage of starting, and the characteristics of the stage are as follows: after the ignition switch is switched on, a pinion of the starter is meshed with a gear ring of the engine, the starter overcomes starting resistance torque and drives the engine to rotate at a certain speed until a certain cylinder of the engine is successfully ignited and starts to work, then the engine automatically runs by the torque output by the starter, the voltage of a battery jar and the initial state of the engine influence the reverse-dragging speed. When the engine is cold started, engine oil of the engine is thickened due to low ambient temperature, the engine oil pressure building speed is low at the initial starting stage, so that the frictional resistance among various parts of the engine is large, and a large resistance moment is generated when a vehicle (military vehicle, large mine truck and the like) with special purposes is provided with external loads such as a hydraulic torque converter and the like.

In order to improve the starting effect of a special-purpose vehicle in a low-temperature environment and ensure the starting capability at a limit low temperature, a double-starter scheme is adopted. The double starters are characterized in that two starters are arranged on the engine at the same time, when the starter is started, the two starters work at the same time, larger torque can be output instantly, and the minimum starting rotating speed can be reached more quickly compared with a single starter scheme.

However, the two starters work simultaneously, the electric quantity consumption of the whole vehicle can be greatly increased, the service life of the storage battery is shortened, the two starters work simultaneously for a long time, and the probability of burning out the starters is also high. In order to solve the problems, the invention provides a control method of a double-starter starting process and an engine.

Example one

The embodiment provides an engine which comprises a double starter, wherein the double starter adopts a control method of a double starter starting process to control the starting of the engine.

The engine comprises an ECU (electronic control unit), an ambient temperature sensor, an engine speed sensor and a battery voltage sensor, wherein each sensor is in communication connection with the ECU, the ECU can monitor the ambient temperature in real time through the ambient temperature sensor to judge whether to control the engine to execute a double-starter starting scheme, and when the ambient temperature detected by the ambient temperature sensor is lower than a set temperature, the ECU controls the engine to execute the double-starter starting scheme. The set temperature is not limited herein, and can be set by those skilled in the art according to actual conditions.

The engine speed can be monitored in real time through the engine speed sensor ECU so as to judge whether the engine speed is greater than or equal to the minimum starting speed and is less than the calibration speed for exiting the starter. The voltage of the storage battery supplying power to the double starters can be monitored in real time through the storage battery voltage sensor ECU, so that the situation that the storage battery voltage is smaller than the allowable minimum voltage value to continuously supply power to the double starters and influence on the service life of the storage battery is avoided.

As shown in fig. 1, the present embodiment further provides a control method of a dual starter starting process, which is applicable to the engine described above, and the control method of the dual starter starting process includes the following steps:

and S10, monitoring the rotation speed of the engine in real time after the double starters are started simultaneously.

The environment temperature sensor sends the detected environment temperature to the ECU, the ECU compares the received environment temperature with the set temperature to judge whether the temperature is lower than the set temperature, if so, the double starters are controlled to start simultaneously, and the rotating speed of the engine is monitored in real time.

And S20, if the engine speed is greater than or equal to the minimum starting speed and less than the calibrated speed for the starter to quit, controlling one starter to quit.

Under the low-temperature environment, the double starters start simultaneously, so that starting torque is provided for the engine, and the starting capability of the engine under the low-temperature environment is improved. When the engine speed is greater than or equal to the minimum starting speed, the engine can overcome the starting resistance moment. In order to prevent a large amount of electric quantity consumption caused by the simultaneous working of the two starters, one starter is allowed to exit first at the moment, and the other starter continues to provide starting torque for the engine.

In this embodiment, the dual starter is powered by the first battery. Namely, one battery simultaneously supplies power to two starters.

As shown in fig. 2, if the engine speed is greater than or equal to the minimum starting speed and less than the calibrated speed at which the starter exits, the step of controlling one of the starters to exit includes:

and S21, detecting the voltage value of the first battery jar.

S22, judging whether the voltage value of the first battery is smaller than the minimum allowable voltage value of the first battery, if so, executing S221; if not, go to step S222.

And S221, controlling the two starters to exit simultaneously.

If the voltage value of the first battery is smaller than the minimum allowable voltage value, the two starters are controlled to quit simultaneously to stop starting the engine in order to prevent the service life of the first battery from being influenced. The first battery is fully charged and then restarted.

And S222, controlling any starter to exit.

If the voltage value of the first storage battery is larger than or equal to the minimum allowable voltage value, any starter can be controlled to exit, and the service life of the first storage battery cannot be influenced.

And S30, when the engine speed is larger than or equal to the calibrated speed for the starter to quit, controlling the other starter to quit.

When the rotating speed of the engine is increased to the calibrated rotating speed of the starter quitting, the engine can automatically run by the torque output by the engine, and at the moment, the other starter can be controlled to quit.

According to the control method for the starting process of the double starters, after the double starters are started simultaneously, the rotating speed of the engine is monitored in real time, and if the rotating speed of the engine is greater than or equal to the minimum starting rotating speed and is smaller than the calibrated rotating speed at which the starter exits, one starter is controlled to exit. The control method for the starting process of the double starters controls the double starters to start simultaneously in a low-temperature environment, and when the rotating speed of the engine is greater than or equal to the minimum starting rotating speed, the double starters can overcome starting resistance moment. At this time, in order to prevent the large electric quantity consumption caused by the simultaneous operation of the two starters, one starter is allowed to exit first. The starting effect of the double starters is met, the electric quantity consumption of the whole vehicle is reduced, and the probability that the two starters break down simultaneously is reduced.

Example two

The control method for the dual starter starting process provided in the present embodiment is basically the same as the control method for the dual starter starting process provided in the first embodiment, and the difference is that:

in the two starters that this embodiment provided, one of them starter passes through the power supply of second storage battery, and another starter passes through the power supply of third storage battery.

As shown in fig. 3, in this embodiment, if the engine speed is greater than or equal to the minimum starting speed and less than the calibrated speed at which the starter exits, the step of controlling one of the starters to exit further includes:

and S21', detecting the voltage value of the second battery cell and the voltage value of the third battery cell.

S22 ', determining whether the voltage value of the second battery is smaller than the minimum allowable voltage value of the second battery, and whether the voltage value of the third battery is smaller than the minimum allowable voltage value of the third battery, if so, executing S221'. If not, S222' is performed.

And S221', controlling the two starters to simultaneously quit.

S222', controlling one of the starters to exit.

In this embodiment, step S222' further includes:

and S2221', when the voltage value of the second battery is greater than or equal to the minimum allowable voltage value of the second battery, and the voltage value of the third battery is greater than or equal to the minimum allowable voltage value of the third battery, controlling any starter to exit.

And S2222', if the voltage value of the second storage battery is smaller than the minimum allowable voltage value of the second storage battery and the voltage value of the third storage battery is larger than or equal to the minimum allowable voltage value of the third storage battery, controlling the starter powered by the second storage battery to quit.

And S2223', if the voltage value of the second storage battery is greater than or equal to the minimum allowable voltage value of the second storage battery and the voltage value of the third storage battery is smaller than the minimum allowable voltage value of the third storage battery, controlling the starter powered by the third storage battery to quit.

In the embodiment, two starters are respectively supplied with power through two storage batteries, the starter which exits first is determined according to the voltage of the storage batteries, the electric quantity consumption of the whole vehicle in the starting process is reduced, and the risk that the double starters simultaneously break down in the starting process of the engine in a low-temperature environment is reduced.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.