'electronically controlled engine cooling' feature

tranquility · 08-15-2010, 04:47 PM

What exactly is that? I remember after a hard run in the Audi TTS and other cars, the fan would be running to cool off the engine after I parked them. However, in the Z4, there is no such fan (EDIT: I don't hear an audible fan), so I'm wondering what is happening here to cool the engine? Thx.

m6pwr · 08-15-2010, 05:05 PM

The electric coolant pump. Its a lot quieter than the in-tank fuel pump.

Memphis1 · 08-15-2010, 05:19 PM

Quote:

Originally Posted by tranquility

What exactly is that? I remember after a hard run in the Audi TTS and other cars, the fan would be running to cool off the engine after I parked them. However, in the Z4, there is no such fan, so I'm wondering what is happening here to cool the engine? Thx.

electronically controlled simply means there's more than just a thermostat for the car to rely on when it gets hot..

here's the fan...

m6pwr · 08-15-2010, 07:33 PM

I think I understand what you are asking. The N54 uses the ecu-controlled electric coolant pump for heat dissipation after the hot motor is turned off. I've never heard the fan either post shut down. It also protects the turbos from heat soak. It is a pretty powerful pump capable of circulating up to 2400 gal/hr. I think I can hear it sometimes after shutting down but it is pretty quiet (unlike the boisterous in-tank fuel pump).

Here's some excerpts from a BMW NA training guide on the N54:
http://www.e90post.com/forums/showthread.php?t=38856.

Darbs330 · 08-16-2010, 04:48 AM

Quote:

Originally Posted by m6pwr

The N54 uses the ecu-controlled electric coolant pump for heat dissipation after the hot motor is turned off.

Wow... I never knew that...

tranquility: Thanks for the question!

m6pwr: Thanks for the insight!

08-15-2010, 04:47 PM	#1
tranquility sportscars only 3236 Rep 3,193 Posts Drives: 2011 Z4 sDrive 35i Join Date: Aug 2007 Location: Montréal iTrader: (0)	'electronically controlled engine cooling' feature What exactly is that? I remember after a hard run in the Audi TTS and other cars, the fan would be running to cool off the engine after I parked them. However, in the Z4, there is no such fan (EDIT: I don't hear an audible fan), so I'm wondering what is happening here to cool the engine? Thx. Last edited by tranquility; 08-15-2010 at 06:30 PM.. Reason: Due to gearhead police to clarify that I didn't hear a fan, so wrongly assumed (so kill me) there is none.
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08-15-2010, 05:05 PM	#2
m6pwr First Lieutenant 38 Rep 374 Posts Drives: '14 335i M sport Join Date: Oct 2008 Location: San Diego, CA iTrader: (0)	The electric coolant pump. Its a lot quieter than the in-tank fuel pump.
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08-15-2010, 07:33 PM	#4
m6pwr First Lieutenant 38 Rep 374 Posts Drives: '14 335i M sport Join Date: Oct 2008 Location: San Diego, CA iTrader: (0)	I think I understand what you are asking. The N54 uses the ecu-controlled electric coolant pump for heat dissipation after the hot motor is turned off. I've never heard the fan either post shut down. It also protects the turbos from heat soak. It is a pretty powerful pump capable of circulating up to 2400 gal/hr. I think I can hear it sometimes after shutting down but it is pretty quiet (unlike the boisterous in-tank fuel pump). Here's some excerpts from a BMW NA training guide on the N54: http://www.e90post.com/forums/showthread.php?t=38856.
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