Claims:We Claim:
1. A method of controlling DPF regeneration, said method comprising:
receiving (100), by a control unit, a driving profile of at least one vehicle from a fleet, based on global positioning system (GPS);

receiving (102), by said control unit, the temperature of diesel particulate filter (DPF) of said vehicle;

checking (104), by said control unit, soot loading for said vehicle; and

comparing (106), by said control unit, said soot loading with a threshold defined for said DPF in said vehicle for determining concentration of soot in said DPF.

2. The method of claim 1, further comprising altering, by said control unit a user of said vehicle and said fleet about said determined concentration of soot in DPF.

3. The method of claim 1, further comprising modifying said driving profile based on said determined concentration of soot
, Description:Complete Specification:

The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed.
Field of the invention
[0001]This invention a method of controlling DPF regeneration in fleet managed system of vehicle.

Background of the invention
[0002]A diesel particulate filter (DPF) is used to trap soot that is present in the exhaust. Each DPF can accumulate soot up to a threshold, beyond which the ability of DPF to trap soot will not be possible. Hence DPF needs to regenerate at periodic intervals. The regeneration frequency capacity of DPF depends upon factors like temperature, the driving profile of vehicle, like for example, city driving, highway driving, etc. Hence, driving conditions especially within city with low speed has high limitations on regeneration. This limitation comes from low exhaust temperatures and low exhaust mass flows due to low speed operations. Frequent regeneration has a high impact on fuel efficiency, oil dilution and catalyst ageing.

[0003] Prior art patent application JP2010059832A discloses a method optimally execute discharge elimination of PM (forcible regeneration) of an exhaust emission control unit by sufficiently utilizing functions of a navigation system. When accumulation quantity of PM exceeds a predetermined quantity, this system judges based on information of a navigation system if a route in which forcible regeneration of DPF can be done exists in a travel direction of a vehicle on a present travel route, and the system sets an evacuation travel route on which forcible regeneration can be done by the navigation system and guides the same if no route on which forcible regeneration can be done exists.

Brief description of the accompanying drawing
[0004] Different modes of the invention are disclosed in detail in the description and illustrated in the accompanying drawing:

[0005] FIG. 1 illustrates a method of controlling DPF regeneration.

Detailed description of the embodiments
[0006] FIG. 1 illustrates a method of controlling DPF regeneration. The method comprises receiving (100), by a control unit, a driving profile of vehicle from a fleet based on global positioning system (GPS). The control unit receives 102 the temperature of diesel particulate filter of the vehicle. The control unit checks 104 the soot loading for the vehicle, and compares 106 the soot loading with a threshold defined for the DPF for determining concentration of soot in DPF. In an embodiment the method further comprises altering a user of the vehicle and fleet about the determined concentration of soot in DPF. The proposed method also modifies the driving profile based on the determined concertation of soot.

[0007]The working of the method will now be explained in further detail. The proposed method is used to detect a driving profile of a vehicle from a fleet of vehicle based on GPS. For the purpose of understanding let us consider two vehicles in the fleet as V1 and V2. Vehicle V1 is allotted for travelling within a city, while vehicle V2 is for inter-city travel. For vehicle V1 and V2, the driving profile is obtained at step 100 based on GPS. At step 102, the temperature of the DPF of vehicle V1 and V2 is received. Since vehicle V1 is under city driving conditions, the temperature of DPF may not have reached the threshold that is required for passive or active regeneration of DPF. At step 106, the control unit compares the soot loading with a threshold defined for DPF in the vehicle for determining concentration of soot in the DPF. Once, the concentration of soot has been determined the control unit alerts the user of the vehicle or the fleet about the concentration of soot in DPF. Based upon the determined concentration of soot the control unit may modify the driving profile of vehicle V1 or V2. The electronic control unit may communicate with the user of vehicle wirelessly so as to change the driving profile of vehicle V1 or V2.

[0008] By changing the driving profile of the vehicle, the necessary conditions, like temperature, time, speed required for DPF regeneration may be achieved for vehicle V1 or V2. This helps in faster regeneration of DPF thereby meeting emission norms and no negative impact on fuel penalty. .

[0009] ‘Adapted’ or ‘arranged’, in the context of the instant disclosure, refers to the technical capability or the technical capacity of a component, in relation to which the term ‘adapted’ or ‘arranged’ is used, to carry out or executed a specified action or actions, upon the requirement of the specified action or actions to be carried out or executed. Moreover, the usage of the term ‘adapted’ or ‘arranged’ here, is in reference with the normal technical capability or technical capacity of the component, imparted by the design or the structure or the composition of the component, and not in reference with any special or extraneous capability or capacity, beyond the scope of the normal technical capability or technical capacity. Therefore there is a need to address this problem.

[0010]It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention in terms of the type of vehicle used. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.