A method and system for preventing over-combustion of a diesel particulate filter

A particle trap and diesel technology, which is applied to combustion engines, machines/engines, internal combustion piston engines, etc., can solve problems such as prone to over-combustion and unable to effectively remove carbon particles from diesel particle traps

CN106401720BActive Publication Date: 2019-02-19ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-02-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method and a system for preventing over-combustion of a diesel particle catcher. The method comprises the steps that a carbon accumulation amount in the current diesel particle catcher is acquired; whether the carbon accumulation amount is larger than or equal to an over-combustion mass threshold or not is determined, and if yes, regeneration starting is forbidden; if not, whether the carbon accumulation amount is larger than or equal to a regeneration mass threshold or not is determined; when the carbon accumulation amount is larger than or equal to the regeneration mass threshold, whether the inlet temperature of the diesel particle catcher is larger than or equal to a regeneration temperature threshold or not is determined, and if yes, regeneration is started; and during a regeneration process, if a regeneration stopping condition is met, regeneration is stopped. By utilizing the method and the system, the problem of the diesel particle catcher in the prior art that over-combustion easily happens or excessive carbon particles in the diesel particle catcher cannot be effectively cleared off because a vehicle is at working conditions of idling and low-speed driving for a long term can be solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of electronic control, in particular to a method and system for preventing over-combustion of a diesel particle trap. Background technique

[0002] Diesel engines are widely used in transportation, construction machinery and other fields due to their good economy, power, reliability and low CO and HC emissions. However, the particulate emission control of diesel engines has not been optimally controlled. In order to reduce environmental pollution and protect human health, stricter emission standards have been formulated at home and abroad. At present, exhaust after-treatment devices have become a standard configuration for diesel vehicles to solve the problem of carbon particle emissions, and diesel particulate filters (Diesel Particulate Filter, DPF) are recognized as a very effective method.

[0003] The working principle of DPF: the exhaust gas containing a large amount of carbon particles emitted by the...

Examples

Embodiment Construction

[0070] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar parameters or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0071] A method and system for preventing over-combustion of a diesel particulate filter provided by the present invention can avoid most of the occurrence of over-combustion by first judging whether the carbon accumulation is greater than or equal to the over-combustion quality threshold, and then directly passes through the diesel particulate filter Whether the inlet temperature is greater than or equal to the regeneration temperature threshold is used to determine whether to start regeneration, rather than by engine speed, oxygen con...