Method and system for controlling coasting with engine off condition at neutral gear of vehicle and vehicle

Abstract

The invention discloses a method and system for controlling a coasting with engine off condition at a neutral gear of a vehicle and the vehicle. The method comprises the steps that an effective brakemaster cylinder pressure signal is obtained, and it is determined whether the brake master cylinder pressure change rate meets a preset first preset condition or not; if yes, the vehicle is controlledto directly exit the coasting with engine off condition at the neutral gear; if not, it is determined whether the brake master cylinder pressure value meets a preset second preset condition or not; adriver brake intention is determined based on the brake master cylinder pressure signal, and it is determined that whether the vehicle does not exit the coasting with engine off condition at the neutral gear or directly exist the coasting with engine off condition at the neutral gear or exist the coasting with engine off condition at the neutral gear in a delayed mode based on the condition thatwhether the vehicle is in emergency or not. The driving comfort can be improved and fuel consumption can be effectively reduced under the condition of ensuring driving brake safety.

Description

technical field [0001] The invention relates to the technical field of vehicle management, in particular to a control method, system and vehicle for a vehicle neutral stall and coasting condition. Background technique [0002] With the increasing shortage of energy sources and the increasing urgency of environmental protection, energy-saving work has become more in-depth; at the same time, due to the increase in the demand for economic benefits in industrial production, as a direct and effective measure to reduce operating costs, energy-saving work should also go further. Especially for a developing country like ours, how to effectively utilize and save resources to better meet the needs of sustained, rapid and healthy development of the national economy has become an important strategic issue for our country. At present, fuel-saving technology has been widely used in automobile design, manufacture and use, and is developing towards a diversified trend. [0003] At present,...

AI Technical Summary

Problems solved by technology

However, when stepping on the brakes under the condition of coasting with the engine off and in neutral, if the calculation is based on the brake switch signal, the driver’s braking intention cannot be effectively identified, that is, after the brake switch signal is triggered, the working condition will be exited immediately, which may lead to driving deterioration and Increased fuel consumption, so it is necessary to optimize the control method when the vehicle is in neutral coasting condition

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