EBH and water temp sensor

[gazz]

Could anybody tell me where the temp sensor is, I have fitted a different EBH to the normal one and was just wondering how close it is the sensor. I have also read somewhere on hear that when they started with the EBH the temp dropped 10C ish as the water moved around the engine, is this normal when you start.

Thanks

[hobbit]

http://techno-fandom.org/~hobbit/cars/trai...0/enginebll.jpg
.
_H*

[bwilson4web]

<div class='quotetop'>QUOTE(gazz @ Jul 12 2007, 06:24 AM) [snapback]477422[/snapback]</div>

Could anybody tell me where the temp sensor is, I have fitted a different EBH to the normal one and was just wondering how close it is the sensor. I have also read somewhere on hear that when they started with the EBH the temp dropped 10C ish as the water moved around the engine, is this normal when you start.
[/b]

If you are interested in reading the coolant temperature, you might looks at some of the diagnostic scanners. They will also give you access to other vehicle data. Ken has a NHW20 Prius performance scanner that many of the efficient drivers use to optimize their mileage. Finally, there is at least one temperature tap that uses the signals into the hybrid vehicle ECU:
http://techno-fandom.org/~hobbit/cars/ect/

I have an earlier model and use this approach:
http://hiwaay.net/~bzwilson/prius/pri_temp.html

Your Engine Block Heater, how is it different from the usual ones that fit in the block?

GOOD LUCK!
Bob Wilson

[gazz]

<div class='quotetop'>QUOTE(bwilson4web @ Jul 12 2007, 07:16 AM) [snapback]477435[/snapback]</div>

If you are interested in reading the coolant temperature, you might looks at some of the diagnostic scanners. They will also give you access to other vehicle data. Ken has a NHW20 Prius performance scanner that many of the efficient drivers use to optimize their mileage. Finally, there is at least one temperature tap that uses the signals into the hybrid vehicle ECU:
http://techno-fandom.org/~hobbit/cars/ect/

I have an earlier model and use this approach:
http://hiwaay.net/~bzwilson/prius/pri_temp.html

Your Engine Block Heater, how is it different from the usual ones that fit in the block?

GOOD LUCK!
Bob Wilson
[/b]

I cannot use your heater as it is not 240V, the one I could get in the UK is for the Prius but it is a shaped plate that is bolted onto the back of the block just below the coolant drain outlet. What I am trying to make sure is that it is fitted correctly, I get about a 25C rise in temperature in 3 hrs, but I get no drop when the engine starts. I have a ScangaugeII so I can see the temperature.

Thanks

[FireEngineer]

Gary,

In North America we get a temperature drop because;

1) the coolant storage tank places cooler coolant into the engine than that which has been heated by the block heater.

2) the NA block heater is not as powerful as the one you are using, hence there is some coolant toward the front of the engine block that has not warmed as much as at the rear and when the engine starts it circulates this cooler coolant.

In the summer with an ambient of 70F I will start with 140F, as the engine starts it will go to 125F and then back up to 140F within about 3 minutes. In winter the drop is usually about 30F-40F at about 30F ambient.

Consider yourself lucky that it doesn't drop.

Wayne

[gazz]

<div class='quotetop'>QUOTE(FireEngineer @ Jul 12 2007, 08:46 AM) [snapback]477473[/snapback]</div>

Gary,

In North America we get a temperature drop because;

1) the coolant storage tank places cooler coolant into the engine than that which has been heated by the block heater.

2) the NA block heater is not as powerful as the one you are using, hence there is some coolant toward the front of the engine block that has not warmed as much as at the rear and when the engine starts it circulates this cooler coolant.

In the summer with an ambient of 70F I will start with 140F, as the engine starts it will go to 125F and then back up to 140F within about 3 minutes. In winter the drop is usually about 30F-40F at about 30F ambient.

Consider yourself lucky that it doesn't drop.

Wayne
[/b]

Thanks for that, I still do not get the rise you get but maybe it is more even across the engine. Is the sensor on the left side of the engine looking from the from.

[ken1784]

<div class='quotetop'>QUOTE(hobbit @ Jul 12 2007, 09:00 PM) [snapback]477430[/snapback]</div>

http://techno-fandom.org/~hobbit/cars/trai...0/enginebll.jpg
.
_H*
[/b]

Hello hobbit,

Would you please let me know where you got the engine block picture?
It was taken by myself and copyrighted to me.

Regards,
Ken@Japan

[gazz]

<div class='quotetop'>QUOTE(ken1784 @ Jul 12 2007, 09:26 AM) [snapback]477486[/snapback]</div>

Hello hobbit,

Would you please let me know where you got the engine block picture?
It was taken by myself and copyrighted to me.

Regards,
Ken@Japan
[/b]

Ken,

See as you took the picture, which way round is the engine?

Thanks
Gary

[ken1784]

<div class='quotetop'>QUOTE(gazz @ Jul 12 2007, 11:30 PM) [snapback]477489[/snapback]</div>

Ken,

See as you took the picture, which way round is the engine?

Thanks
Gary
[/b]

Ok,
Following is my part of the original.
It shows more upper and lower part of the picture because I have my original.

I'm not saying hibbit stole my picture, but I think he got it somewhere at an internet site.
However, I don't agree he placed his mark on my picture.

Regards,
Ken@Japan

edit:
I misunderstood your question.
It is engine output side.

[gazz]

<div class='quotetop'>QUOTE(ken1784 @ Jul 12 2007, 09:57 AM) [snapback]477498[/snapback]</div>

Ok,
Following is my part of the original.
It shows more upper and lower part of the picture because I have my original.

I'm not saying hibbit stole my picture, but I think he got it somewhere at an internet site.
However, I don't agree he placed his mark on my picture.

Regards,
Ken@Japan

edit:
I misunderstood your question.
It is engine output side.
[/b]

Thanks thats great, that is the opposite side to my heater so the whole engine must be getting warm.

Gary