vehicle consumption caculation

[former_member601006]

Hi

I am trying to understand how the vehicle consumption figures are calculated (when clicking on the calculator symbol in equipment master). Because it doesn't look right to me.

On my test equipnment I following measurment documents: (Only two measuring documents exist)

*Date*             -*Tot KM* -    *Tot Liter*
01.07.2011    - 500    -           40
30.07.2011    - 1000  -           100

calculation method: Liters/100 KM

Short/long period days= 365

I am getting the following average values, I need your help to figure out how are these calculated?

Daily avg.cty:                17.24 (KM)
Daily Consumption:       2.07    (Litres)
AvgeConsumption:       12       (L/100 KM)

Regards

Edited by: aqvarious on Aug 18, 2011 3:36 AM

Edited by: aqvarious on Aug 18, 2011 3:58 AM

[Former Member · Accepted solution]

Hi,

Check this link http://help.sap.com/saphelp_470/helpdata/en/53/0cdf3d0eb8af5ee10000000a114084/content.htm

1. Avg Activity :- 1000-500 /29days = 17.24

2.Avg fuel consumped : 100-40/29days = 2.068

3. Avg Consumption : 2.068/17.24 x100km =12

regrds

pushpa

[former_member601006 · Accepted solution]

Thanks

Just wondering whats is the purpose of "short" and "long" period?

I was confused with this line in the link you sent me about short and long period.

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In order to calculate the average daily fleet object activity, the system first determines the start of the period for which the data should be determined.

In the case of a short-term analysis, the start of the period is the current date minus the number of days for the short-term period. You have assigned this number of days to the calculation method in Customizing.

In the case of a long-term analysis, the start of the period is the current date minus the number of days for the long-term period. You have assigned this number of days to the calculation method in Customizing.

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Regards

[Former Member · Accepted solution]

Hi

MY SAP IDES system is not working properly to confirm but :

The formula given is as below :

Average daily activity = (Overall counter reading for the last measurement document u2013 Overall counter reading for the first measurement document after the start of the period) / Number of days between the entry dates for both documents

I think here the short term and longterm days are like analysis periods ..

I would suggest you to give different days for short term and longterm .like 35-short , 40 -Long days .in this case system gives different calculation for each period ..

Please enter measurement documents on a daily basis and check how the values are getting changed for both the periods ..

regrds

pushpa

[Former Member · Accepted solution]

Hi,

These short term and long term conditions are purely for analyzing the trend of vehicle performance.

By default you will find short term as 30 days and long term as 365 days. This shows that the short term report gives the average data over the last month, ending with 30 days in the past, from the date you check this.

The long term similarly gives the average data over the past year.

The purpose is, as clearly seen, is to analyse the trend to know the performance of the vehicle - whether remaining constant or deteriorating.

As Pushpa rightly pointed out, the respective measuring documents should be updated at least on a weekly basis, or whenever the refueling is done, which is the best way to have near accurate results.

James Prabaharan

Edited by: James Prabaharan on Aug 19, 2011 6:54 AM