X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5085618 for flyrotary@lancaironline.net; Mon, 08 Aug 2011 12:15:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=aeMH4JcVOnVr0LmJAzqEvfnmJyuaZufWdlng4HTRGCk= c=1 sm=0 a=3O1GDdaUiu8A:10 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=arxwEM4EAAAA:8 a=r1ClD_H3AAAA:8 a=K6LsM_D4i50IAlBHzQsA:9 a=FToMj1etZrMHclR632kA:7 a=wPNLvfGTeEIA:10 a=Ia-xEzejAAAA:8 a=LNQA0D6qIwXLBUZ8cgoA:9 a=xIdRi4B0roHXjNMcg6QA:7 a=EzXvWhQp4_cA:10 a=aTnxH5rqqb0A:10 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:49981] helo=EdPC) by cdptpa-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 58/CC-03893-D6B004E4; Mon, 08 Aug 2011 16:14:37 +0000 Message-ID: <042072080B6943CFB7D1A6F4E8430F34@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Injector Mixing Plate Date: Mon, 8 Aug 2011 12:13:31 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0049_01CC55C4.96ABE360" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_0049_01CC55C4.96ABE360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Bob, I have flow with and without the plastic injector "mixing" plates - I = truly fully could not detect any measurable difference with/without. = The only thing I believe that might have been any different with the = plates - it seemed the engine started smoother and quicker on colder = mornings. Since the mixing plate has no bearing on how much fuel is injected, but = simply is to ensure better mixing of the primary injectors spray with = the incoming air, I doubt they would make the engine run leaner. =20 They might possibly have some minor effect on airflow (a tiny bit of a = restriction) possibly causing some perturbation - but then that is what = it is intended to do in order to get quicker and better fuel = atomization. Since the primary injectors have such a relative short = path between injector in intake port - I suspect the Mazda engineers = figured they would get slightly better fuel mileage with them. FWIW Ed Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com From: Rogers, Bob J.=20 Sent: Monday, August 08, 2011 10:33 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Injector Mixing Plate I have a 1987 Mazda Turbo 13B engine in my Mustang II kit plane. The = primary injectors in the center housing are stock Nippon Denso 550 cc = peak and hold. Below each injector is a plastic insert called a "mixing = plate", which presumably disperses the fuel coming out of the injectors = before entering the combustion chamber. I am wondering if the = obstruction in fuel flow caused by the grid on the mixing plate would = make the engine run lean at higher engine speed, such as 5,000 to 6, 000 = rpm. If I used a different injector, such as the RC 550 cc (which has a = better spray pattern), can I eliminate the mixing plates? What happens = if I keep the stock injectors and just remove the mixing plate? =20 I welcome comments from anyone on the list, but hopefully, racing Guru = Lynn Hanover can shed some light on my questions. =20 Thanks, =20 Bob J. Rogers N62BT ------=_NextPart_000_0049_01CC55C4.96ABE360 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Bob,
 
I have flow with and without the plastic = injector "mixing"=20 plates - I truly fully could not detect any measurable difference=20 with/without.  The only thing I believe that might have = been any=20 different with the plates - it seemed the engine started smoother = and=20 quicker on colder mornings.
 
Since the mixing plate has no bearing on how = much fuel is=20 injected, but simply is to ensure better mixing of the primary injectors = spray=20 with the incoming air, I doubt they would make the engine run = leaner. =20
 
They might possibly have some minor effect on = airflow (a=20 tiny bit of a restriction) possibly causing some perturbation - but then = that is=20 what it is intended to do in order to get quicker and better fuel=20 atomization.  Since the primary injectors have such a relative = short path=20 between injector in intake port - I suspect the Mazda engineers figured = they=20 would get slightly better fuel mileage with them.
 
FWIW
 
Ed
 
Edward L. Anderson
Anderson Electronic = Enterprises=20 LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com

From: Rogers, Bob J.
Sent: Monday, August 08, 2011 10:33 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Injector Mixing Plate

I have a 1987 = Mazda=20 Turbo 13B engine in my Mustang II kit plane.  The primary injectors in the = center=20 housing are stock Nippon Denso 550 cc peak and hold.  Below each injector is a = plastic insert=20 called a =93mixing plate=94, which presumably disperses the fuel coming = out of the=20 injectors before entering the combustion chamber.  I am wondering if the = obstruction in=20 fuel flow caused by the grid on the mixing plate would make the engine = run lean=20 at higher engine speed, such as 5,000 to 6, 000 rpm.  If I used a different = injector, such as=20 the RC 550 cc (which has a better spray pattern), can I eliminate the = mixing=20 plates?   What = happens if I=20 keep the stock injectors and just remove the mixing=20 plate?

 

I welcome = comments from=20 anyone on the list, but hopefully, racing Guru Lynn Hanover can shed = some light=20 on my questions.

 

Thanks,

 

Bob J.=20 Rogers

N62BT

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