New invention. Permenant wideband guys please read.

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Jun 5, 2004 | 09:02 PM

#26

PVerdieck

Rotary Freak

Joined: May 2002

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From: Houston

Jun 5, 2004 | 11:02 PM

#27

InsaneGideon

Still on 1st engine

Joined: Jun 2003

Posts: 1,176

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From: SoCal

Quote:

Originally posted by DCrosby
Sounds Interesting, allthough, by the time it heads into leaner afr's, it's usually too late... I like alarms, but I'd like it better if it retarded sparc if it noticed a lean condition...

I thought the AEM was reactive to wideband AFR?

edit: I mean DCrosby's AEM ECU, not the wideband sensor

Last edited by InsaneGideon; Jun 5, 2004 at 11:05 PM.

Jun 6, 2004 | 01:06 AM

#28

brads

Senior Member

Joined: Jan 2002

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From: blah

Sounds like a great idea. Plus your not trying to sell the product to make a bunch of money. Keep the flames down guys, he is just sharing personal experience...

Jun 6, 2004 | 01:51 AM

#29

skunks

I'm a CF and poop smith

Joined: Aug 2001

Posts: 3,957

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From: Hawaii

i just read it off of http://www.motec.com/products/plm/sensors.htm

Jun 6, 2004 | 02:44 AM

#30

Hyperite

Vagina Junction

Joined: Mar 2001

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From: Seattle, WA

Quote:

Originally posted by InsaneGideon
I thought the AEM (ECU) was reactive to wideband AFR?

Yep! Even narrowband, but that's probably not wise.

Jun 6, 2004 | 03:03 AM

#31

clayne

PV = nRT

Joined: Jan 2003

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From: New Zealand (was California)

How is this an invention?

It's an LED triggered by a certain voltage. I don't see what the big deal is.

Jun 6, 2004 | 03:50 AM

#32

InsaneGideon

Still on 1st engine

Joined: Jun 2003

Posts: 1,176

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From: SoCal

Though I'd hate to encourage the hijack...

I've heard the 500Hrs figure before, myself (http://www.mainlineauto.com.au/produ...ission/afr806/)... as well as a 100kMi figure. Maybe Motec is being realistic, knowing that the sensors, for their applications, are going into performance engines with higher EG temperatures and richer mixtures.

Look at Bosch's datasheet: http://wbo2.com/lsu/Y258K01005e03mar21eng.pdf

In sec. 2.11 they list the ideal conditions to reach a 100kMi lifespan. If we followed them, maybe we'd get the EPA highway mileage Mazda claims (

) There are a lot of variables to consider. ... But that's for another thread.

Jun 6, 2004 | 07:34 PM

#33

peejay

Old [Sch|F]ool

Joined: May 2001

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From: Cleveland, Ohio, USA

Quote:

Originally posted by clayne
How is this an invention?

It's an LED triggered by a certain voltage. I don't see what the big deal is.

Me neither.

Jun 6, 2004 | 09:09 PM

#34

Flybye

It's never fast enough...

Joined: Feb 2001

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From: Miami - Given 1st place as the POOREST city in the US as per the federal government

I'm about to invent a crystal ball that attaches to the ECU.

The ECU will know WHEN it will detonate and adjust fuel settings accordingly just before the point of detonation

Jun 6, 2004 | 09:22 PM

#35

peejay

Old [Sch|F]ool

Joined: May 2001

Posts: 12,869

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From: Cleveland, Ohio, USA

Quote:

Originally posted by Flybye
I'm about to invent a crystal ball that attaches to the ECU.

The ECU will know WHEN it will detonate and adjust fuel settings accordingly just before the point of detonation

GM ECUs do this. Except the way they do it is they retune the engine to find out when it detonates and then back off a bit, and then store that data as the "limit". I don't think that'd work too well with der rotary.

Another interesting thing they do is that if the engine starts detonating BELOW this limit, it re-tunes itself assuming a bad tank of fuel, and then when the fuel gauge changes upwards by more than half a tank, it assumes most of the bad fuel is gone/diluted and it re-tests for the limits again.