Hybrid vehicle creep torque control method and hybrid vehicle

Abstract

The present invention relates to the field of hybrid vehicles, and in particular to a hybrid vehicle creep torque control method and a hybrid vehicle. The hybrid vehicle is specifically a P2 architecture-based hybrid vehicle configured with a dual clutch transmission, and the creep torque control method includes: obtaining a desired target creep torque; controlling an engine of the hybrid vehicleto output constant actual engine torque; dynamically controlling the engine of the hybrid vehicle according to relationships between the target creep torque and actual engine torque, to obtain the actual creep torque corresponding to the target creep torque. Thus, the invention provides a novel hybrid vehicle creep torque control method and a hybrid vehicle. Through making the engine to output constant torque and dynamically controlling the torque output by the engine, control of the creep torque of a dual clutch transmission of a hybrid vehicle becomes easy, and workload on engine tuning is reduced.

Description

technical field [0001] The invention relates to the field of hybrid electric vehicles, in particular to a method for controlling creeping torque of the hybrid electric vehicle and a hybrid electric vehicle adopting the control method. Background technique [0002] In a conventional engine vehicle, while the vehicle is running, even when the accelerator pedal and the brake pedal are not depressed, the idling torque of the engine is transmitted to the torque converter and the transmission, so the vehicle runs in a creep mode (creep driving). During the crawling running of the vehicle, the creeping torque control of the vehicle is of great significance to the crawling performance of the vehicle. For cars equipped with DCT, creep control is an important part of transmission control. Crawl control affects the vehicle's response to the driver and the low-speed drivability of the vehicle. [0003] Figure 1a is a schematic diagram showing a connection structure of an engine and ...

AI Technical Summary

Problems solved by technology

Therefore, in terms of creep torque control of DCT, including Figure 2a The connection structure of the hybrid vehicle has to include Figure 1a The connection structure has the same defects as the traditional engine vehicles

Images