I've got a Triumph Spitfire 1.3L engine with Ford EDIS ignition and MS-II v3 running 2.90x firmware and standard B&G code.
I want to install an evaporative emission system to cut down the stink when the car is stored in a closed, attached garage. I need to control the canister purge valve with the MS unit. I plan to do this with one of the spare ports through a relay. The trigger criteria I think I need are coolant temp > 150 and TPS > 40. The evaporative canister and purge valve from a 1994 Ford Escort look like promising parts to incorporate.
My questions are:
Has anyone actually installed an EVAP emission system and how did it work out?
Are the trigger criteria close to what is needed or do they need to be adjusted?
Are there possibly better components to install to make this thing work?
Thanks in advance for the help
Bill
Evaporative Emission System Control
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Tailwind
- MegaSquirt Newbie
- Posts: 30
- Joined: Sun Aug 07, 2011 8:10 am
- Location: Central Illinois, USA
Evaporative Emission System Control
Triumph Spitfire powered Locost
Central Illinois, USA
MS-II v3
EDIS
Central Illinois, USA
MS-II v3
EDIS
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Tailwind
- MegaSquirt Newbie
- Posts: 30
- Joined: Sun Aug 07, 2011 8:10 am
- Location: Central Illinois, USA
Re: Evaporative Emission System Control
I've gone ahead and installed the system. The cansiter and purge valve were from a 1993 Ford Escort (1.9L engine). To control the purge valve, I used one of the spare ports to trigger a relay. The documentation indicated that the spare ports could handle a current of 0.5 amp or less. The relay I used draws 0.16 amp, so there should be plenty of margin. The trigger criteria I used were Coolant > 160 AND TPS > 25(%).
From what I could find out, the purge valve is only supposed to be triggered occasionally. Other cars use multiple criteria (I've seen up to 8 ) to determine when to open the purge valve. The TPS seemed to be a good substitute for engine load. In practice, the valve triggers when accelerating. It does not come on under 'steady state' conditions. The only time it is close to activating is when I am cruising above 70 mph.
The engine does not stumble when the valve opens or closes. So far, after driving about 400 miles, the system seems to be functioning. There may be better ways to do this, but this seemed to be quick and simple.
Bill
From what I could find out, the purge valve is only supposed to be triggered occasionally. Other cars use multiple criteria (I've seen up to 8 ) to determine when to open the purge valve. The TPS seemed to be a good substitute for engine load. In practice, the valve triggers when accelerating. It does not come on under 'steady state' conditions. The only time it is close to activating is when I am cruising above 70 mph.
The engine does not stumble when the valve opens or closes. So far, after driving about 400 miles, the system seems to be functioning. There may be better ways to do this, but this seemed to be quick and simple.
Bill
Triumph Spitfire powered Locost
Central Illinois, USA
MS-II v3
EDIS
Central Illinois, USA
MS-II v3
EDIS
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Evaporative Emission System Control
Thanks for sharing! Not many people have tried this, so it's good to hear back from someone who has.
