Vehicle engine high-speed starting and stopping control method and system based on active shutdown mode

Abstract

The invention relates to vehicle engine high-speed starting and stopping control method and system based on an active shutdown mode. The method comprises steps of: 200, making an engine work normally; 201, judging whether the current speed is zero, if so, executing 202 and if not, returning to 200; 202, judging the current gear, executing 203 if the gear is gear N, executing 204 if the gear is gear D and keeping idling if the gear is gear P; 203, judging the setting time of the gear N, executing 205 if the setting time is larger than a demarcate limit value, and otherwise, returning to 200; 204, judging if the last speed is larger than a certain demarcate limit value, if so, executing 205, and if not, returning to 200; and 205, judging the safety factor information of the current engine, executing 217 to shut down the engine if reaching a safe value, and returning to 200 if not reaching the safe value . The control system comprises a signal acquisition unit and a signal control unit, wherein the signal acquisition unit comprises an engine safety factor information acquisition module and a gear information acquisition module. Therefore, the invention can realize high-speed startingand stopping of the engine by a controller according to the working condition.

Description

technical field [0001] The present invention relates to the control of the fast start-stop function of the engine, in particular to a control mode added with the driver's active stop mode based on the N gear signal and the monitoring function of the engine start request signal. This method is applicable to traditional power vehicles and hybrid vehicles. Background technique [0002] When traffic jams or waiting for red lights require frequent starting and stopping, the engine control unit judges the current vehicle status to obtain whether the stopping requirements are met to complete the automatic stopping and starting of the engine. However, there is a shortcoming that the car cannot be stopped according to the driver's intention due to insufficient judgment on the parking waiting time and special working conditions. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a control method and system for the rapid start...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a control method and system for the rapid start-stop function of the vehicle engine based on the driver's active shutdown mode based on the N gear signal, so as to avoid the judgment of the waiting time for parking and special working conditions by the general start-stop control method Insufficient disadvantages that make it impossible to stop according to the driver's intention

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