Exhaust particle catcher and vehicle

Abstract

The invention discloses an exhaust particle catcher and a vehicle, and belongs to the field of motor vehicle exhaust. The exhaust particle catcher comprises a filter passageway. The filter passagewaycomprises multiple parallel adjacent runners. The adjacent runners are isolated through porous filter walls. The runners comprise the first runners and the second runners, inlets or outlets of the first runners are opened, the inlets of the adjacent first runners are not simultaneously opened, and inlets and outlets of the second runners are opened. The vehicle comprises the exhaust particle catcher. The second runners with the conducting inlets and outlets are used as rapid flow passageways of exhaust, the filtering degree of the exhaust flowing through the second runners is small, thus, thefiltering degree of the whole exhaust is reduced, particular matter is prevented from being excessively caught and filtered, the accumulation speed of carbon particles and ash on the porous filter walls is reduced, rapid rise of back pressure of the exhaust is avoided, the regeneration frequency is reduced, and finally torque output losses of an engine are reduced.

Description

technical field [0001] The invention relates to the field of motor vehicle emission, in particular to an exhaust particle trap and a vehicle. Background technique [0002] With the stringent emission regulations, many gasoline engines need an exhaust particulate filter (Gasoline Particulate Filter, GPF) to capture carbon particles in the exhaust airflow to meet emission regulations. Such as figure 1 As shown, the existing exhaust particulate filter is a wall-flow type, including a plurality of parallel flow channels 1', and adjacent flow channels 1' are separated by porous and breathable thin-walled ceramics. When a flow channel 1' When the inlet is closed, the outlet is open, and the inlet of the adjacent flow channel 1' is open, and the outlet is closed. This structure leads to the fact that the exhaust must pass through the porous and air-permeable thin The wall ceramic enters the adjacent flow channel 1' with an open outlet and is discharged, and the particulate matter...

AI Technical Summary

Problems solved by technology

As the mileage of the car increases, carbon particle deposition increases, and GPF regeneration measures need to be taken regularly to burn the attached carbon deposits. The combustion temperature generally must be above 550°C. The vehicle has to delay ignition, or even increase the speed, and the load increases. extremely inconvenient

The ash is a non-combustible particle, which cannot be eliminated by high temperature, and will permanently exist in the particle filter, blocking some of the wall filter holes

At present, the problems of the exhaust particulate filter are that the mileage of the accompanying vehicle increases, the filter holes are clogged, the exhaust back pressure increases, frequent regeneration is required, and the torque output of the engine and fuel economy are reduced.

Images