A kind of bsg starting assist system and method

Abstract

The invention discloses a BSG starting booster system and method, which relate to the technical field of automobile control. The system includes: a starting controller, which is set in the vehicle controller EECU or the engine controller VECU, and the starting controller is used to receive the starting command When the ambient temperature is detected, it will send a pick-up command to the starter relay; the starter is used to start the engine after the starter relay is picked up; When the temperature is lower than the threshold value, the starter controller is also used to wait for a preset time after sending the pull-in command to the starter relay, and then send a start control command to the motor controller; the motor controller is used to respond to the start control command and control the BSG to assist in starting the engine . The invention can effectively improve the low-temperature starting performance of the medium and heavy trucks, solve the problem that the medium and heavy trucks are difficult to start in winter, and reduce the preheating work for the truck lubricating system and the battery.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a BSG starting assist system and method. Background technique [0002] At present, it is difficult for cars to start in winter or in cold regions. First, because of the cold weather in winter, low ambient temperature, increased viscosity of engine oil, and increased friction resistance of various moving parts; , the power released is not much. Therefore, improving the low-temperature starting performance of automobiles has always been an urgent problem in the industry. [0003] In related technologies, the main solutions are as follows: one is to increase the capacity of the battery, and a battery with the same discharge rate can output a higher current, thereby improving the starting performance of the battery; The third is to use BSG (Belt-Driven Starter Generator, belt-driven starter / power generation integrated motor) to replace the original starter and generator ...

AI Technical Summary

Problems solved by technology

[0004] However, for increasing the capacity of the battery and preheating the starting fuel system components such as the battery, there are the following disadvantages. First, the increase in battery capacity increases the cost of the customer; second, preheating greatly increases the power consumption of the vehicle. , battery life is reduced

For the use of BSG to replace the original starter and generator, because BSG can only be applied in the passenger car market at present, although it is installed on a truck, because the engine power of the truck is too large, the required starting torque is too large, and the BSG cannot start the truck engine, therefore, in the current field of commercial vehicles, BSG cannot be effectively applied

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