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From: Perry Mick <pjmick@viclink.com>
Date: 2004/09/19 Sun AM 01:50:35 EDT
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Quiet
> Bulent Aliev wrote:
>
>>On 9/18/04 5:57 PM, "Dale Rogers" <rogersda@cox.net> wrote:
>>
>> >>
>>>John Slade <sladerj@bellsouth.net> wrote:
>>>
>>>[ Lynn Hanover]: >>> >>>
>>>>>Water temp 180 at cruise hot day climb 200. Oil temp 160 (ideal)
>>>>>at cruise, 180 is OK, 210 hot day climb. Power goes down above 160 oil
>>>>>temp.
>>>>> >>>>>
>>>>I've told by another well respected rotary expert that the REW is designed
>>>>to run at 203 - 212F, that oil temp should be kept below 240F, and should
>>>>never regularly go over 248F. Everywhere I go I hear different numbers for
>>>>these limits. I'm using 5-30 Castrol Synthetic.
>>>> >>>>
>>>John, >>>
>>> One aspect of the disparity is the problem of where to
>>>measure the oil temp. Mazda does it at the oil pan. I
>>>believe that Lynn is doing it at an adapter block where
>>>the oil returns from the cooler to the rear housing. It's
>>>going to be cooler there - and more relevant to the temp.
>>>at the bearings. >>>
>>>Dale R.
>>>
>>> >>>
>>
>>Dale, Mazda does not measure oil temperature anywhere. The cars don't have
>>oil temp. gauge. Only thing in the pan is low oil level sender.
>>Bulent
>>
> True and false.
> There is a temp sensor in the oil pan. However, it's a "low" temp sensor.
>
> Finn
It's a switch to turn on a sub zero start assist system. Doesn't go to the ecu or the instrument panel.
Perry,
Thank you. I thought I had a genuine mystery developing there. Since I have only an engine, and not a whole car, it's not always easy to figure out what individual components do - except by finding them in the wiring schematics. The Haynes manual identifies the sensor as an "oil thermo unit". Since that manual identifies the water temp sensor as a "water thermo unit", I concluded that the "mystery device" was an analog temperature sensor. After Buly responded, I started searching through the schematics in both the Haynes and Chilton manuals for what it fed. So far, I've not been able to find a single reference to it.
I'll go look for something that mentions the cold start circuitry (I did see "plumbing" for that mentioned.)
Dale R.
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