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Do cooler operating temps reduce mechanical losses?
Posted by mag (more from mag) on Mon, 13 Jul 2009 02:54:45

Here is a two part question that relates to how much mechanical energy is lost cooling the engine.

In a C900, the coolant pump is always active, since it is belt driven.

Q1. Once the engine reaches operating temperature, do higher coolant temperatures have any effect on engine load due to the pump? I'm thinking not.

If temperature rises to the point that the cooling fan activates, that draws electrical power. Electrical power comes directly from the battery, but indirectly from the alternator.

Q2. Does the alternator draw a constant mechanical load whether it is charging or not? In other words, if the cooling fan activates less often, is mileage increased?

posted by 69.12.207...

Posts in this Thread:

Do cooler operating temps reduce mechanical losses?, mag, Mon, 13 Jul 2009 02:54:45
- Re: Do cooler operating temps reduce mechanical losses?, Ari, Tue, 14 Jul 2009 04:19:15
  - Thanks - that helps me understand. nm, mag, Tue, 14 Jul 2009 14:27:07
- Let's leave the politics aside ..., mag, Mon, 13 Jul 2009 21:41:35
  - Re: Let's leave the politics aside ..., Landjet , Tue, 14 Jul 2009 06:34:40
    - Re: Let's leave the politics aside ..., mag, Tue, 14 Jul 2009 15:44:04
      - My simple data is what I see consumption wise at the pu, Landjet , Tue, 14 Jul 2009 18:47:18
        Re: Thanks for the data point, mag, Tue, 14 Jul 2009 19:46:25
        You must be really gullible +, Landjet , Tue, 14 Jul 2009 22:02:26
        Re: You must be really gullible +, mag, Tue, 14 Jul 2009 23:04:01
        Re: You must be really Pinnocio, Landjet , Wed, 15 Jul 2009 07:57:12
        Your remarks are uncalled for, mag, Wed, 15 Jul 2009 15:07:11
        Re: Your remarks are uncalled for, Landjet , Wed, 15 Jul 2009 21:06:00
        Re: Your remarks are uncalled for, mag, Thu, 16 Jul 2009 02:52:07
        Get a life, Landjet , Thu, 16 Jul 2009 05:59:07
        Re: My remarks are called for, Landjet , Wed, 15 Jul 2009 21:21:04
- Re: Do cooler operating temps reduce mechanical losses?, mag, Mon, 13 Jul 2009 13:48:16
  - I have never used ethanol,, tibbidoh , Mon, 13 Jul 2009 15:46:26
    - Re: I have never used ethanol, mag, Mon, 13 Jul 2009 20:13:08
      - Re: I have never used ethanol, mag, Mon, 13 Jul 2009 20:35:38
    - Re: I have never used ethanol - me either, oldsaab , Mon, 13 Jul 2009 17:09:44
      - Re: I have never used ethanol - me either, Justin VanAbrahams, Mon, 13 Jul 2009 20:20:17
        Re: I have never used ethanol - me either, oldsaab , Mon, 13 Jul 2009 21:30:26
    - Re: I have never used ethanol,, Justin VanAbrahams, Mon, 13 Jul 2009 16:35:33
      - Re: I have never used ethanol,, oldsaab , Mon, 13 Jul 2009 21:52:45
        pump and fan, mag, Mon, 13 Jul 2009 22:30:43
        Re: pump and fan, oldsaab , Mon, 13 Jul 2009 23:03:50
        Re: pump and fan, mag, Mon, 13 Jul 2009 23:39:06
      - Re: I have never used ethanol,, Landjet , Mon, 13 Jul 2009 17:13:50
        Re: I have never used ethanol,, oldsaab , Mon, 13 Jul 2009 21:09:32
        Re: I have never used ethanol,, Landjet , Mon, 13 Jul 2009 21:40:46
        Does anyone have experimental data?, mag, Mon, 13 Jul 2009 22:20:33
        Re: Does anyone have experimental data?, oldsaab , Mon, 13 Jul 2009 23:05:49
        Re: Does anyone have experimental data?, mag, Mon, 13 Jul 2009 23:20:48
        Re: I have never used ethanol,, oldsaab , Mon, 13 Jul 2009 21:48:41
        Re: I have never used ethanol,, Justin VanAbrahams, Mon, 13 Jul 2009 21:26:52
        Re: I have never used ethanol,, oldsaab , Mon, 13 Jul 2009 22:56:29
        Re: I have never used ethanol,, Justin VanAbrahams, Tue, 14 Jul 2009 10:59:19
        Re: I have never used ethanol,, oldsaab , Mon, 13 Jul 2009 21:33:37
        Dang, just look at all this technical, tibbidoh , Tue, 14 Jul 2009 06:17:54
- Re: Do cooler operating temps reduce mechanical losses?, tibbidoh , Mon, 13 Jul 2009 07:00:39
- Re: Do cooler operating temps reduce mechanical losses?, Landjet , Mon, 13 Jul 2009 05:18:29

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