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A Calculation Method of Hybrid Vehicle GPF Regeneration Quality Threshold

A technology of regeneration quality and calculation method, applied in the direction of calculation, engine components, engine control, etc., can solve the problems of regeneration temperature rise, regeneration delay, etc., and achieve the effect of avoiding ablation damage

Active Publication Date: 2022-01-25
DONGFENG MOTOR CORP HUBEI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additives (including cerium, iron and strontium) should be added to the fuel in a certain proportion. Too much additive will affect the life of DOC, but if it is too small, it will cause regeneration delay or increase regeneration temperature

Method used

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  • A Calculation Method of Hybrid Vehicle GPF Regeneration Quality Threshold
  • A Calculation Method of Hybrid Vehicle GPF Regeneration Quality Threshold
  • A Calculation Method of Hybrid Vehicle GPF Regeneration Quality Threshold

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0034] Such as figure 1 As shown, the flow chart of a calculation method for the GPF regeneration quality threshold of a hybrid vehicle is as follows:

[0035] Step 1. Before the experiment, arrange the temperature sensor, oxygen sensor and differential pressure sensor according to the requirements. Change the front and rear of GFP to quick-connect flanges. The GPF is drilled separately to place the temperature sensor, which is convenient for baking and weighing before weighing. remove. Then weigh the GPF to get the original mass of the GPF.

[0036] Step 2: Load the GPF into the vehicle and execute the carbon accumulation process.

[0037] Such as figure 2 As shown, the carbon accumulation process includes:

[0038] Step 20...

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Abstract

The invention relates to the technical field of automobile control, in particular to a method for calculating a GPF regeneration quality threshold of a hybrid vehicle. Perform the carbon accumulation process; measure the mass m11 of the GPF; perform the regeneration process; measure the mass m12 of the GPF, and obtain the temperature of the GPF as the GPF regeneration temperature T1; calculate the difference between the mass m11 of the GPF and the mass m12 of the GPF, and obtain the GPF regeneration accumulation Carbon mass m1; repeat the above operations until multiple sample data are obtained; draw a transverse mass-temperature curve diagram; obtain the carbon accumulation mass corresponding to the critical temperature of CPF according to the mass-temperature curve diagram, and use it as the GPF regeneration quality threshold. GPF ablation damage caused by temperature increases to the GPF limit can be avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a calculation method for a GPF regeneration quality threshold of a hybrid vehicle. Background technique [0002] During the driving process of the vehicle, as the mileage increases, the carbon accumulation of the GPF (particulate filter) will gradually increase, and the back pressure of the system will increase, which will affect the power and fuel consumption of the vehicle. In order to ensure the normal performance of the vehicle Driving, GPF requires regular or irregular regeneration. [0003] At present, the GPF regeneration methods in the industry are mainly divided into two regeneration methods: active regeneration and passive regeneration. Active regeneration refers to the use of external energy to increase the temperature inside the trap, causing the particles to ignite and burn. When the temperature in the trap reaches 550°C, the deposited particles will be oxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N9/00F01N11/00F02D41/02G06T11/20
CPCF01N9/002F01N11/00F01N11/002F02D41/029F01N2900/1606F01N2900/1602G06T11/203G06T11/206Y02T10/40
Inventor 袁杰陈燕林渠胜华
Owner DONGFENG MOTOR CORP HUBEI
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