Method for controlling tail gas particle catcher in idling state of vehicle

Abstract

Provided is a method for controlling a tail gas particle catcher in the idling state of a vehicle. After an engine rotating speed threshold value, a vehicle speed threshold value and a particle amount threshold value are set, a controller records the initial particle amount of the tail gas particle catcher when the vehicle is in the idling condition; the idling particle accumulating amount in the idling condition is calculated; the total particle accumulating amount is calculated, judgment is carried out, and after the total particle accumulating amount exceeds the particle amount threshold value, the controller reminds a driver that the particle amount of the tail gas particle catcher exceeds the standard; and the total particle accumulating amount equals the sum of the initial particle amount and the idling particle accumulating amount. According to the method, the idling standard of the vehicle is set, the idling particle control mode is started when the vehicle is in the idling state, and an overload reminding function of the tail gas particle catcher is added, so that the problem that polluting emission is increased due to the fact that the driver is still not reminded to carry out effective regeneration after the tail gas particle catcher is overloaded and even blocked when the vehicle is in the idling condition for a long time is solved.

Description

technical field [0001] The invention relates to the field of vehicle exhaust emission control, in particular to a particle trap control method. Background technique [0002] In order to prevent and control air pollution, protect and improve ambient air quality, and protect public health, countries have increasingly stringent requirements on vehicle exhaust emissions. In order to meet the increasingly stringent environmental protection regulations, diesel engines have introduced a DPF device (Diesel Particulate Filter) in the control of particulate (PM) emissions. This device can not only collect particles in vehicle exhaust, but also burn and eliminate them through regeneration. Particulate matter in the trap. [0003] The boundary conditions for triggering regeneration are determined by the amount of particles calculated by the DPF particle model in the engine controller. [0004] In the conventional calculation method of the particle amount, the particle amount of the DP...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for controlling the exhaust particle catcher in the idle state of the vehicle. The method sets the standard for the vehicle idle speed. When the vehicle enters the idle state, the idle particle control mode is activated and the particle capture The overload reminder function of the device solves the problem of a sharp increase in pollution emissions in the long-term idling state of vehicles in traffic jams and waiting for people in the prior art, and protects the environment.

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