3results about How to "Avoid undermotivation" patented technology

The application provides a load change-based demand torque control method, system and vehicle, and the method is as follows: (1) when the vehicle is in a stationary state, the actual load mass of the vehicle is read, and the load rate lambda corresponding to the current actual load mass is calculated; (2) the demand torque MAP under the current load rate lambda is extracted, and after the vehicle is in a running state, the demand torque MAP under the current load rate is used to determine the demand torque of the vehicle. When the change of the load rate is detected, the demand torque MAP is adaptively adjusted, so that the excessive acceleration or power deficiency caused by the change of the load is avoided, the energy utilization is optimized, and the power response more in line with the expectation of the driver is provided, especially when the change of the load is large (such as after sudden unloading).

The invention discloses an anti-slip control method, device and equipment for a hybrid bulldozer and a storage medium. Comprising the steps that the slip rate of a vehicle is calculated based on collected multi-source data, the continuous slip time is recorded, and the accelerator opening degree is detected; based on the slip rate, the continuous slip time and the accelerator opening degree, whether a preset slip triggering condition is met or not is judged; when the preset slip triggering condition is met, a preset dynamic torque correction table is inquired, a torque correction coefficient is obtained, and the torque correction coefficient defined in the dynamic torque correction table changes in a multi-section mode and comprises a stable adjusting stage and a rapid adjusting stage. And calculating the corrected output torque of the driving motor based on the torque correction coefficient. According to the scheme, the motor torque is dynamically adjusted by monitoring the vehicle slip state in real time and combining the dynamic torque correction strategy, the slip rate is controlled within a reasonable range, and the system response speed and the energy utilization efficiency are improved.

The application discloses a shift decision method, a controller and a vehicle of a hybrid vehicle, and relates to the field of vehicle control.The method comprises the following steps: obtaining current vehicle driving parameters and predicted vehicle speeds after shifting of each target gear; outputting a basic target gear based on the current speed and the current accelerator pedal opening degree by using a preset two-parameter calibration algorithm; determining the maximum output wheel end torque of each target gear based on the current driving mode, the predicted vehicle speed after shifting and transmission parameters; calculating the minimum wheel end demand torque after shifting in combination with the current driving parameters; determining the target gear with a positive value of the difference between the maximum output wheel end torque and the minimum demand torque as an effective gear and determining the highest limit gear; and outputting a shift execution gear based on the comparison result of the basic target gear and the highest limit gear.The application dynamically determines the torque output boundary, avoids power deficiency, eliminates the cycle of upshift and downshift, and improves the driving smoothness of the vehicle.