Teimo,
A long-winded journey to the same conclusion :-) I concur - if preheating
means you can open the engine up sooner, it will get the cc to temp a little
sooner, and hence do more to save the environment!
I suspect, though, that this one is a marginal saving - certainly when
compared to the environmental benefits of dropping a bomb on a suburban 4x4
on every flight...!
Cheers,
Jeremy
Jeremy Davey
Europa Monowheel 537M G-EZZA
Europa Club Vice-Chairman, Webmaster, PFA NC Representative
PFA EC Member
"If you can keep your head when all about you are losing theirs, then it is
possible you haven't grasped the severity of the situation."
Tail done
Standard XS wings with mods underway
CM installed in fuse (with airbrakes fittings)
1430 build hours to date, build currently stalled due to house moves and
lack of workshop
Intended fit:
Rotax 914 turbo, Airmaster CS fully-feathering prop
Lots of lights, buttons, switches, gizmos, and alarms
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Raimo Toivio
Sent: 27 January 2006 10:21
Subject: Re: Europa-List: Re: Pre-heating a Rotax?
Jeremy,
OK - of course you are technically right but same target.
When rich, catalytic converter cannot work as it should be.
In fact, it is possible to spoil it by a little but possibe amount of rare
petrol. And that is bad for your wallet and surrounding nature.
If preheated I am sure also cc gets earlier upp to operating temperature and
start to work sooner. When preheated, the engine idle time is usually
shorter and that is good for cc.
So, engine preheating also helps cc to save the world...
Wishes, Raimo (not Teimo)
----- Original Message -----
From: "Jeremy Davey" <europaflyer_3@msn.com>
Sent: Thursday, January 26, 2006 8:09 PM
Subject: RE: Europa-List: Re: Pre-heating a Rotax?
>
> Hold on Teimo - much of that I'd agree with, but not the bit on the
> catalyst.
>
> The catalytic converter does not work until it gets up to temperature (in
> the hundreds of degrees), regardless of the initial temperature of the
> engine. Preheating the engine will not reduce pollution by making the cat
> work sooner - but it will reduce pollution some by reducing the length of
> time the engine is running rich ("on choke").
>
> Regards,
> Jeremy
>
> Jeremy Davey
> Europa Monowheel 537M G-EZZA
> Europa Club Vice-Chairman, Webmaster, PFA NC Representative
> PFA EC Member
> "If you can keep your head when all about you are losing theirs, then it
is
> possible you haven't grasped the severity of the situation."
> Tail done
> Standard XS wings with mods underway
> CM installed in fuse (with airbrakes fittings)
> 1430 build hours to date, build currently stalled due to house moves and
> lack of workshop
> Intended fit:
> Rotax 914 turbo, Airmaster CS fully-feathering prop
> Lots of lights, buttons, switches, gizmos, and alarms
>
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of Raimo Toivio
> Sent: 26 January 2006 15:57
> To: europa-list@matronics.com
> Subject: Re: Europa-List: Re: Pre-heating a Rotax?
>
>
> All (on the northern hemisphere)!
>
> ----- Original Message -----
> From: "Jim Butcher" <europa@triton.net>
> To: <europa-list@matronics.com>
> Sent: Wednesday, January 25, 2006 3:40 AM
> Subject: Europa-List: Re: Pre-heating a Rotax?
>
>
> >
> > Talked to Andy about winter operations the other day. He suggested that
> the
> > Rotax is built with tolerances similar to an automobile engine and
> therefore
> > really doesn't need preheated. After all, do you preheat your car?
> >
>
> Yes I really do! Always when below 0C. Also cockpit.
>
> Main factors:
>
> 1) preheated engine gives instantly heat for cockpit
>
> - safe: windows are immediately clean of ice and snow and no fog on them
> - comfort: +20C leather feels better than -20C leather and less clothing
> - health: no back injury for example
>
> 2) engine health: oil works immediately after start
>
> 3) fuel consumption: preheated car saves money
>
> - thumb of rule: cold engine takes extra fuel 2 dl
> or more in every cold start
>
> 4) pollution: less fuel - less pollution
>
> - catalysator did not work until the engine is warm
>
> 5) time tables: preheated car starts "always" like under the palm tree
>
> - if cold, have you enough el-power to start the stiff engine?
> - you can drive immediately, no warm-upp moms
>
> Sophisticated Engine Preheat Systems:
>
> - electric resistance element in water w thermostat connected to mains
> (typically 500W and 2 hrs pre-heating is enough for -20C)
> - programable and radio remote controlled heating system,
> burns petrol or diesel (Webasto, Ebersbacher...)
> (typically 2-5kW and 20 minutes is enough, needs also electric 50W)
> - also integrated battery pre-heating and charging systems
> - heated car garage, if possible (!)
>
> I have installed electric preheating system in my Rotax.
> I will keep it on ALWAYS when below +10C (in or out).
> It keeps also cockpit warm and dry (good for electronic bits).
>
> I have also water thermostat and heat exchanger in oil system.
> Cannot comment how they work - engine has not fire upp yet.
>
> Regards, Raimo
> ===========
> Raimo M W Toivio
>
> OH-XRT #417 XS Mono, building hrs 1400 so far
> OH-CVK C172 Skyhawk
> OH-BLL Beech C45
>
> 37500 Lempaala
> Finland
> tel + 358 3 3753 777
> fax + 358 3 3753 100
> gsm + 358 40 590 1450
>
> raimo.toivio@rwm.fi
> www.rwm.fi
>
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