CN-121976578-A - Engine start-stop control method, device, hybrid engineering machine, medium and program product

CN121976578ACN 121976578 ACN121976578 ACN 121976578ACN-121976578-A

Abstract

The invention relates to the technical field of engineering machinery control and discloses a control method and device for starting and stopping an engine, a mixed engineering machinery, a medium and a program product, wherein the method comprises the steps of obtaining the current operation intensity of the mixed engineering machinery and the historical behavior data of an operator, and determining the current electric quantity state starting threshold of the engine of the mixed engineering machinery according to the current operation intensity and the historical behavior data; and performing start-stop control on the engine based on the current operation parameters of the hybrid engineering machinery, the current electric quantity state start threshold and the throttle adjustment position. The invention can realize the dynamic adaptation of start-stop control, accurately match the actual operation scene and driving habit of the hybrid engineering machinery, reduce ineffective start-stop and nonsensical operation of the engine, avoid mechanical abrasion caused by frequent start-stop of the engine, and prolong the service life of equipment.

Inventors

GAO PENGFEI
Ying Houran
LI TONGTONG
MING QIAOHONG
LV JIANGHUA

Assignees

湖州三一重工研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20260228

Claims (10)

1. A control method for engine start-stop, characterized by being applied to a hybrid working machine, the method comprising: Acquiring current operation intensity of the hybrid engineering machine and historical behavior data of an operator, and determining a current electric quantity state starting threshold of an engine of the hybrid engineering machine according to the current operation intensity and the historical behavior data; Adjusting the current throttle position according to the historical behavior data to obtain a throttle adjustment position; and controlling the start and stop of the engine based on the current operation parameters of the hybrid engineering machine, the current electric quantity state start threshold and the throttle adjustment position.
2. The method of claim 1, wherein the obtaining current work intensity of the hybrid work machine and historical behavior data of an operator and determining a current state of charge start threshold of the engine based on the current work intensity and the historical behavior data comprises: acquiring the current actual load of the hybrid engineering machine, and determining the current operation strength of the hybrid engineering machine according to the ratio of the current actual load to the maximum operation load; determining a historical operation working condition intensity characteristic according to the actual load of the hybrid engineering machine in a preset unit time, determining a driving operation habit characteristic of a driver according to the opening degree of an accelerator pedal of the hybrid engineering machine in the preset unit time, and determining historical behavior data according to the historical operation working condition intensity characteristic and the driving operation habit characteristic of the driver; And determining the current electric quantity state starting threshold according to the reference electric quantity state starting threshold, the current operation intensity and the historical behavior data.
3. The method of claim 2, wherein the determining the current state of charge activation threshold from the reference state of charge activation threshold, the current job intensity, and the historical behavior data comprises: Determining the starting threshold value of the reference electric quantity state according to the current working condition based on a preset electric quantity state interval; Determining a first weight coefficient and a second weight coefficient based on an experimental calibration method, a historical data statistics method, a split working condition mapping method or an adaptive adjustment method; Subtracting the product of the current operation intensity and the first weight coefficient from the reference electric quantity state starting threshold value, and subtracting the product of the historical behavior data and the second weight coefficient from the reference electric quantity state starting threshold value to obtain the current electric quantity state starting threshold value.
4. The method of claim 1, wherein adjusting the current throttle position based on the historical behavior data to obtain a throttle adjustment position comprises: determining a current throttle mode according to historical behavior data of historical throttle data, and determining a corresponding throttle adjustment coefficient according to the current throttle mode; acquiring the current throttle position of the hybrid engineering machine; And calculating the product of the current throttle position and the throttle adjustment coefficient, and taking the sum of the product and the deviation of a preset constant as the throttle adjustment position.
5. The method of claim 1, wherein the controlling the start-stop of the engine of the hybrid working machine based on the current operating parameter of the hybrid working machine, the current state of charge start threshold, and the throttle adjustment position comprises: acquiring the current electric quantity state, the engine temperature, the current actual load and the current air conditioner load of the hybrid engineering machinery; Based on a pre-constructed comprehensive evaluation function, the comprehensive evaluation function comprises a safety constraint function and a power constraint function, a first shutdown evaluation value corresponding to the safety constraint function is calculated according to the current electric quantity state, the current electric quantity state starting threshold, the throttle adjusting position and the engine temperature, and a second shutdown evaluation value corresponding to the power constraint function is calculated according to the current actual load and the current air conditioner load; Determining comprehensive evaluation values of different start-stop decisions according to the first stop evaluation value and the second stop evaluation value, wherein the start-stop decisions comprise a stop decision, a hold decision and a start decision; and determining an optimal start-stop decision according to comprehensive evaluation values of different start-stop decisions, and performing start-stop control on the engine based on the optimal start-stop decision.
6. The method of claim 5, wherein the determining the composite evaluation value for different start-stop decisions based on the first and second stop evaluation values comprises: Determining a third weight coefficient and a fourth weight coefficient according to the current working condition; The first shutdown evaluation value and the second shutdown evaluation value are weighted and summed based on the third weight coefficient and the fourth weight coefficient to obtain a shutdown comprehensive evaluation value of the shutdown decision; respectively carrying out reverse correction on the first shutdown evaluation value and the second shutdown evaluation value, determining a corresponding first starting evaluation value and a corresponding second starting evaluation value, and carrying out weighted summation on the first starting evaluation value and the second starting evaluation value based on the third weight coefficient and the fourth weight coefficient to obtain a starting comprehensive evaluation value of the starting decision; and respectively carrying out attenuation correction on the first shutdown evaluation value and the second shutdown evaluation value, determining a corresponding first maintenance evaluation value and a corresponding second maintenance evaluation value, and carrying out weighted summation on the first maintenance evaluation value and the second maintenance evaluation value based on the third weight coefficient and the fourth weight coefficient to obtain a maintenance comprehensive evaluation value of the maintenance decision.
7. A control device for starting and stopping an engine, which is applied to a hybrid construction machine, the device comprising: The first adjusting module is used for acquiring the current operation intensity of the hybrid engineering machine and the historical behavior data of an operator, and determining a current electric quantity state starting threshold value of the engine according to the current operation intensity and the historical behavior data; The second adjusting module is used for adjusting the current throttle position according to the historical behavior data to obtain a throttle adjusting position; And the start-stop control module is used for controlling the start-stop of the engine of the hybrid engineering machine based on the current operation parameters of the hybrid engineering machine, the current electric quantity state start threshold and the throttle adjustment position.
8. The hybrid engineering machine is characterized by comprising an engine, a motor and a controller, wherein the engine and the motor are connected with the controller and used for providing power for the hybrid engineering machine; the controller comprises a memory and a processor, wherein the memory and the processor are in communication connection, the memory stores computer instructions, and the processor executes the computer instructions, so that the engine start-stop control method of any one of claims 1 to 6 is executed.
9. A computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the control method of engine start-stop according to any one of claims 1 to 6.
10. A computer program product comprising computer instructions for causing a computer to perform the control method of engine start-stop as claimed in any one of claims 1 to 6.

Description

Engine start-stop control method, device, hybrid engineering machine, medium and program product Technical Field The invention relates to the technical field of engineering machinery control, in particular to a control method and device for starting and stopping an engine, a hybrid engineering machine, a medium and a program product. Background With the continuous development of hybrid power technology, engineering mechanical equipment gradually introduces a more efficient and environment-friendly power system, wherein a hybrid loader is widely applied as a typical application scene. In the hybrid loader, the cooperation of the engine and the motor can effectively reduce fuel consumption and emission. Particularly, under the working environment of frequent starting and stopping in a short time, the intelligent starting and stopping control strategy becomes a key technology for improving the system performance, reducing the energy consumption and prolonging the service life of equipment. Current engine start-stop control strategies rely primarily on simple threshold decisions and set rules. For example, when the battery SOC reaches a certain level, the system will start and stop the engine according to the set battery power range, when the accelerator is depressed to a certain extent, the engine will start to meet the power demand, and when the engine water temperature or oil temperature is too low, the engine will continue to operate to avoid the occurrence of the supercooled state. However, these strategies are typically preset fixed logic, lack of dynamic adjustment capability, and may result in frequent engine starts or unnecessary long periods of operation, thereby affecting fuel efficiency to some extent, increasing emissions, and shortening the service life of the device. Disclosure of Invention The invention provides a control method and device for starting and stopping an engine, a mixed engineering machine, a medium and a program product, and aims to solve the problem that the starting and stopping of the engine of the mixed engineering machine cannot be dynamically adjusted. In a first aspect, the invention provides a control method for starting and stopping an engine, which is applied to a hybrid engineering machine, and comprises the steps of obtaining current operation intensity of the hybrid engineering machine and historical behavior data of an operator, and determining a current electric quantity state starting threshold of the engine of the hybrid engineering machine according to the current operation intensity and the historical behavior data; and performing start-stop control on the engine based on the current operation parameters of the hybrid engineering machinery, the current electric quantity state start threshold and the throttle adjustment position. According to the control method for starting and stopping the engine, the starting threshold value of the current electric quantity state of the engine of the hybrid engineering machine is determined according to the current operation intensity of the hybrid engineering machine and the historical behavior data of an operator, the current accelerator position is adjusted according to the historical behavior data, the accelerator adjustment position is obtained, and further the starting and stopping of the engine are controlled based on the current operation parameters of the hybrid engineering machine, the current electric quantity state starting threshold value and the accelerator adjustment position. According to the invention, by adjusting the electric quantity state starting threshold and the accelerator position, a fixed parameter threshold judging mode of starting and stopping of the engine of the traditional hybrid engineering machinery can be broken, dynamic adaptation of starting and stopping control is realized by fusing operation intensity and historical behavior data of an operator, actual operation scenes and driving habits of the hybrid engineering machinery are accurately matched, invalid starting and stopping and nonsensical operation of the engine are reduced, fuel consumption and tail gas emission are reduced, energy utilization efficiency of a power system is improved, mechanical abrasion caused by frequent starting and stopping of the engine is avoided, the service life of equipment is prolonged, and operation efficiency, driving experience and equipment protection are considered. In an alternative embodiment, the method comprises the steps of obtaining current working strength of the hybrid engineering machine and historical behavior data of an operator, determining a current electric quantity state starting threshold of an engine according to the current working strength and the historical behavior data, obtaining current actual load of the hybrid engineering machine, determining the current working strength of the hybrid engineering machine according to the ratio of the current actual load to the maximum working loa