阅读说明：本技术 发动机起动控制方法、装置、设备及存储介质 (Engine starting control method, device, equipment and storage medium ) 是由 王兴元 马雁 吕文芝 张小田 陈月春 于 2019-09-30 设计创作，主要内容包括：本发明实施例提供一种发动机起动控制方法、装置、设备及存储介质,该方法包括：获取发动机的转速、单缸进气量和温度数据；根据所述单缸进气量和预设过量空气系数,计算第一喷油量；根据所述转速和所述温度数据,确定第二喷油量；将所述第一喷油量和所述第二喷油量中的最大值作为发动机的起动喷油量,对发动机进行起动控制。本发明实施例通过将第一喷油量和第二喷油量中的最大值作为最终的起动喷油量,能够减少由于喷油量过小导致的车辆起动失败的问题,提高车辆起动的可靠性。(the embodiment of the invention provides an engine starting control method, an engine starting control device, engine starting equipment and a storage medium, wherein the method comprises the following steps: acquiring the rotating speed, single-cylinder air input and temperature data of the engine; calculating a first oil injection quantity according to the single-cylinder air inflow and a preset excess air coefficient; determining a second fuel injection quantity according to the rotating speed and the temperature data; and taking the maximum value of the first fuel injection quantity and the second fuel injection quantity as the starting fuel injection quantity of the engine to carry out starting control on the engine. According to the embodiment of the invention, the maximum value of the first fuel injection quantity and the second fuel injection quantity is used as the final starting fuel injection quantity, so that the problem of vehicle starting failure caused by over-small fuel injection quantity can be reduced, and the reliability of vehicle starting is improved.)

1. an engine start control method characterized by comprising:

Acquiring the rotating speed, single-cylinder air input and temperature data of the engine;

Calculating a first oil injection quantity according to the single-cylinder air inflow and a preset excess air coefficient;

determining a second fuel injection quantity according to the rotating speed and the temperature data;

And taking the maximum value of the first fuel injection quantity and the second fuel injection quantity as the starting fuel injection quantity of the engine to carry out starting control on the engine.

2. The method of claim 1, wherein the temperature data comprises an ambient temperature;

obtaining single-cylinder air input, comprising:

collecting atmospheric pressure;

Determining an air density according to the atmospheric pressure and the ambient temperature;

searching an air leakage coefficient corresponding to the rotating speed in a preset first data table, wherein the first data table comprises a corresponding relation between the rotating speed and the air leakage coefficient;

Searching an air intake and exhaust resistance coefficient corresponding to the rotating speed in a preset second data table, wherein the second data table comprises the corresponding relation between the rotating speed and the air intake and exhaust resistance coefficient;

And calculating the single-cylinder air input according to the air density, the air leakage coefficient corresponding to the rotating speed and the air intake and exhaust resistance coefficient corresponding to the rotating speed.

3. The method of claim 2, wherein calculating the single-cylinder intake air amount according to the air density, the air leakage coefficient corresponding to the rotating speed and the air intake and exhaust resistance coefficient corresponding to the rotating speed comprises:

Calculating the single-cylinder air input by adopting a first formula, wherein the first formula is as follows:

Wherein m is_Afor the single cylinder air input, ρ is the air density, v_Eis the engine displacement, n is the number of engine cylinders, K_LIs the air leakage coefficient corresponding to the rotating speed, K_RAnd the air intake and exhaust resistance coefficient is corresponding to the rotating speed.

4. the method of claim 1, further comprising:

acquiring historical data of a plurality of engine starting failures;

Calculating an excess air coefficient when each engine fails to start according to historical data of each engine fails to start;

And determining the preset excess air coefficient according to the excess air coefficient when each engine fails to start, so that the preset excess air coefficient is smaller than the excess air coefficient when each engine fails to start.

5. the method of claim 1, wherein the predetermined excess air factor is in a range of 1.35 to 1.5.

6. The method of claim 1, wherein calculating a first fuel injection amount based on the single cylinder intake air amount and a preset excess air ratio comprises:

And calculating the first fuel injection quantity by adopting a second formula, wherein the second formula is as follows:

Wherein m is_fIs the first injected fuel quantity, m_AAlpha is the air-fuel ratio and phi is the single-cylinder air input_aand the preset excess air coefficient is adopted.

7. The method of any of claims 1-6, wherein the temperature data includes ambient temperature, oil temperature, and water temperature;

determining a second injection quantity based on the rotational speed and the temperature data, including

Selecting the minimum value of the environment temperature, the engine oil temperature and the water temperature as a reference temperature;

and searching the oil injection quantity corresponding to the rotating speed and the reference temperature in a preset third data table to be used as the second oil injection quantity, wherein the third data table comprises the corresponding relation of the rotating speed, the reference temperature and the oil injection quantity.

8. An engine start control device characterized by comprising:

The acquisition module is used for acquiring the rotating speed, the single-cylinder air inflow and the temperature data of the engine;

The first processing module is used for calculating a first oil injection quantity according to the single-cylinder air input and a preset excess air coefficient;

The second processing module is used for determining a second fuel injection quantity according to the rotating speed and the temperature data;

And the control module is used for taking the maximum value of the first fuel injection quantity and the second fuel injection quantity as the starting fuel injection quantity of the engine to carry out starting control on the engine.

9. an engine start control apparatus characterized by comprising: at least one processor and memory;

The memory stores computer-executable instructions;

Execution of the computer-executable instructions stored by the memory by the at least one processor causes the at least one processor to perform the engine start control method of any of claims 1-7.

10. a computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, implement an engine start control method as recited in any one of claims 1-7.