Engine Startup Stop Control for Low-Speed Hybrid Starting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The dual-motor hybrid system in vehicles faces issues with excessively long starting times and low engine revolution speeds, leading to damage of hardware equipment such as the starting motor and dual-mass flywheel, particularly in starting modes like 12V starting, P1 motor starting, and clutch starting.
Innovation Solution
A method and device for controlling the engine to stop based on current state and operation parameters, including revolution speed, start duration, coolant temperature, and torque, to prevent excessive starting times and low speeds, using a server to determine and enforce stop conditions for different starting modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine continues to start for a long time to ensure successful startup, then the reliability of engine startup is improved, but the starting motor and dual-mass flywheel may be damaged due to prolonged operation
Solution Approach 1:
The control method performs preliminary monitoring of startup parameters (rotation speed, duration, temperature, torque) during the engine startup process. By continuously acquiring and evaluating these parameters in real-time, the system can predict potential startup failures before they occur and intervene by stopping the startup process, thereby preventing damage to the starting motor and dual-mass flywheel while maintaining reliable engine operation.
2Object-affected harmful factors
If the engine is stopped immediately when parameters indicate potential failure, then hardware damage is prevented, but the engine may fail to start properly
Solution Approach 1:
The control method establishes different threshold values for startup parameters (rotation speed threshold, duration threshold, temperature threshold, torque threshold) to define safe operating boundaries. By monitoring whether parameters exceed these thresholds, the system can intelligently determine when to stop the startup process. This parameter-based control ensures that the engine is stopped only when necessary to prevent damage, while allowing normal startup processes to complete successfully.
Solution Approach 2:
The control method implements a feedback mechanism where the control unit continuously monitors startup parameters and compares them against preset thresholds. Based on this feedback, the system dynamically adjusts the startup process by issuing stop commands when thresholds are exceeded. This closed-loop control ensures that the engine startup process is both protected from damage and guided toward successful completion.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
Embodiments of the present application disclose a method, a device, an electronic equipment and a storage medium for controlling engine stop. The method includes acquiring current state information and operation parameter information of an engine, the current state information includes a starting state, and the operation parameter information includes revolution speed information, start duration information, coolant temperature information and torque information of the engine. If the current state information is the starting state, and the revolution speed information, the start duration information, the coolant temperature information and the torque information meet a first preset stop condition corresponding to the starting state, the engine is controlled to be in the stopped state. Based on the embodiments of the present application, excessively long starting time and excessively low revolution speed of the engine can be prevented, damages of hardware equipment such as a starting motor and a dual-mass flywheel can be avoided, and safety and reliability of the system can be improved.