# Trend of g/kWh as function of kW

**URL:** <https://forum.gcaptain.com/t/trend-of-g-kwh-as-function-of-kw/16144>\
**Category:** Marine Engineering\
**Created:** [April 21, 2016, 2:46am UTC](https://forum.gcaptain.com/t/trend-of-g-kwh-as-function-of-kw/16144 "2016-04-21T02:46:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![fran.cesc17](https://avatars.discourse-cdn.com/v4/letter/f/46a35a/32.png) [@fran.cesc17](https://forum.gcaptain.com/u/fran.cesc17)\
**Post date:** [April 21, 2016, 2:46am UTC](https://forum.gcaptain.com/t/trend-of-g-kwh-as-function-of-kw/16144/1 "2016-04-21T02:46:50Z")

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Hi everybody and thank you

I would say that the fuel consumption in terms of g/kWh of a slow diesel engine tends to reduce when the Power increases.

For example a VLCC tanker would have a smaller total g/kWh than a Handysize tanker. I would say bigger engine, larger efficiency.

Do you have an idea of how much this reduction is? Have you ever seen a graph of the g/kWh as function of the Power (for typical engines)?

Thank you very very much

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**Author:** ![Steamer](https://avatars.discourse-cdn.com/v4/letter/s/3d9bf3/32.png) [@Steamer](https://forum.gcaptain.com/u/Steamer)\
**Post date:** [April 21, 2016, 3:24am UTC](https://forum.gcaptain.com/t/trend-of-g-kwh-as-function-of-kw/16144/2 "2016-04-21T03:24:02Z")

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Google is your friend. There are project guides for every engine available from the manufacturers that graph all load conditions. It is not difficult to find that information since it is what sells their engines.

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**Author:** ![johnny.dollar](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@johnny.dollar](https://forum.gcaptain.com/u/johnny.dollar)\
**Post date:** [April 21, 2016, 7:20pm UTC](https://forum.gcaptain.com/t/trend-of-g-kwh-as-function-of-kw/16144/3 "2016-04-21T19:20:56Z")

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you want brake specific fuel consumption curves.