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Regeneration control method and system for vehicle

A regeneration control and vehicle technology, applied in the direction of coolant flow control, electrical control, engine control, etc., can solve problems such as inability to distinguish between normal driving regeneration and parking regeneration, excessive combustion, and inability to accurately reflect carbon load, etc. Achieve the effect of solving the problem that the carbon load of the model is greater than the actual carbon load

Active Publication Date: 2021-01-26
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current policy vehicle controller cannot distinguish between normal driving regeneration and parking regeneration, and the initialization value is the same value
This solution cannot accurately reflect the real carbon load after normal driving regeneration and parking regeneration, which will lead to the risk of excessive combustion in the next regeneration process

Method used

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  • Regeneration control method and system for vehicle
  • Regeneration control method and system for vehicle
  • Regeneration control method and system for vehicle

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Embodiment Construction

[0040] Parking regeneration is a supplement to normal driving regeneration. Only when the normal driving regeneration cannot meet the requirements due to the aging of the customer's car (does not affect driving), when the carbon accumulation reaches a certain level (the increase in back pressure will affect Fuel consumption, drivability) and remind customers to clean up carbon. The inventors found that when the vehicle is being regenerated, the carbon load after regeneration is different due to the different termination conditions of normal driving regeneration and parking regeneration. For example, normal driving regeneration takes the carbon load below a certain value as the condition for the end of regeneration, while parking regeneration takes the regeneration time reaching a certain value as the time for the end of regeneration. Sometimes we need to do multiple park regenerations. In this way, the carbon load after parking regeneration is not the same value as the carbon...

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Abstract

The invention provides a regeneration control method and system for a vehicle, and belongs to the technical field of vehicle control. The regeneration control method of the vehicle comprises the stepsthat after parking regeneration is finished, the initial value of a carbon load is calibrated as a first threshold value of a test empirical value, wherein the test empirical value is obtained by carrying out actual road parking regeneration test calibration on the vehicle; and the carbon load of the vehicle is re-accumulated with the first threshold value as an initial value. The invention further provides a parking regeneration control system for executing the regeneration control method of the vehicle. The regeneration control method and system of the vehicle can guarantee that a model carbon load of a particulate trap after parking regeneration is greater than an actual carbon load, and the problem that the particulate trap is burnt down under a fuel cut-off condition caused by an inaccurate model carbon load and consequentially, the emission is out of limit is solved.

Description

technical field [0001] The invention belongs to the field of vehicle control, in particular to a vehicle regeneration control method and regeneration control system. Background technique [0002] Particulate matter emissions from gasoline or diesel engines are one of the pollutants that need to be controlled in vehicle emissions. Especially for direct injection engines, the recirculated particulate matter emissions are ten times higher than port injection engines. The national six-stage emission regulations include the quality and quantity of particulate matter into the scope of control and supervision. In order to reduce the emission of particulate matter, it is necessary to introduce a particulate filter from the perspective of post-emission treatment, such as a gasoline engine particulate filter GPF (Gasoline Particle Filter) or Diesel Particle Filter DPF (Diesel Particle Filter). After the particle filter is installed in the vehicle exhaust system, about 90% of the car...

Claims

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Application Information

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IPC IPC(8): F01N9/00F02D41/02F02D41/14F01P7/02F01P5/02
CPCF01N9/002F01P5/02F01P7/02F02D41/024F02D41/1475Y02T10/40
Inventor 张清茂任向飞武向科王江伟李进陈矗
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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