Advanced commercial vehicle gear shifting reminding control method and system

Abstract

The invention discloses an advanced commercial vehicle gear shifting reminding control method, belongs to the technical field of gear shifting control. The advanced commercial vehicle gear shifting reminding control method mainly solves the technical problem that an existing gear shifting reminding method frequently reminds of gear increase and decrease, and the method comprises the following steps that S1, when the vehicle speed is smaller than a threshold value, the rotating speed of an engine and the maximum torque of the engine after gear increasing are calculated, and if the rotating speed of the engine and the maximum torque of the engine meet requirements, a driver is reminded to conduct gear increase; and S2, when the vehicle speed is not smaller than the threshold value, the rotating speed of the engine, the maximum torque of the engine and the specific fuel consumption at each gear are calculated, and a first small-specific-fuel-consumption gear, a second small-specific-fuel-consumption gear and a third small-specific-fuel-consumption gear are obtained, wherein an optimal gear is selected from the first small-specific-fuel-consumption gear, the second small-specific-fuel-consumption gear and the third small-specific-fuel-consumption gear, and the driver is reminded to switch to the optimal gear. The invention also discloses a control system for realizing the method. The advanced commercial vehicle gear shifting reminding control method and system can give consideration to power performance and fuel economy, and frequent reminding of gear increase and decrease is avoided.

Description

technical field [0001] The present invention relates to the technical field of shift control, more specifically, it relates to an advanced commercial vehicle shift reminder control method and system. Background technique [0002] At present, the driver is still the main body of the car operation, and different drivers have different driving behaviors and driving habits. Good driving behavior can reduce the fuel consumption and pollutant emissions of the car. Drive fuel-saving key points, drivers with better driving skills can save fuel by 2%-4%, drivers with average driving skills can save fuel by 4%-7%, and drivers with poor driving skills can save fuel. Oil 7%-12%. Choosing the right gear at the right time is an important part of good driving behavior. [0003] At present, manual transmissions still account for a large proportion of traditional power commercial vehicles in China. Drivers who do not understand the working principle of engines and fuel economy areas, espec...

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Problems solved by technology

[0010] In addition to the above shortcomings, if the above two types of solutions are applied to passenger cars, since passenger cars have fewer gears, it is appropriate to use the method of prompting for upshifts and downshifts, but for the number of gears less than 10 For the above-mentioned commercial vehicles, in the middle and high gears, the transmission ratio of each gear has a small difference, and the engine working conditions of each gear will be relatively close. If this kind of scheme is still adopted, there may be frequent prompts to increase or decrease gears. Happening

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