From: "Luciano, Luis I CIV PEOSUB, PMS404P" <flyrotary@lancaironline.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: Rotary Design Change
Thread-Topic: [FlyRotary] Re: Rotary Design Change
Thread-Index: AQHP+uA1487tjTF0YEejvbQv2r+9vpxZ7HUA
Date: Mon, 10 Nov 2014 14:18:31 +0000
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Thanks for the feedback Jason!

Luis

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20
Sent: Friday, November 07, 2014 6:11 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rotary Design Change


I think the consensus has been that this is pure malarky.

#1 - his explanation suggests that the intake chamber is at higher =
pressure than the exhaust chamber.  Obviously the opposite is true, so =
air fuel mixture is never going to cross over the spark plug hole into =
the exhaust chamber.  Exhaust gases crossing over into the intake =
chamber probably isn=E2=80=99t helpful, but restricting the size the =
spark plug hole would be more detrimental to proper ignition, so his =
linear plug hole doesn=E2=80=99t solve anything.

#2 - there is no torque being generated at top dead center so the =
pressure across the rotor face argument is misguided.  Changing position =
of the compression pocket would not have the effect he is describing.  =
Mazda tested offset compression pockets and it did not help anything.

Its actually a lot more exciting to read the SAE papers about the =
Renesis improvements which actually were quite helpful in reducing =
emissions and improving efficiency.  They virtually eliminated cross =
talk between exhaust and intake ports.

Or talk about the 16X engine - the version they are still playing around =
with in Japan.  It has higher displacement (1.6 liter versus 1.3 liter =
13B) with a narrower rotor width, larger rotor diameter and larger =
eccentric offset.  These changes cause an improvement in thermal =
efficiency (better surface to volume ratio than the 13B) and better low =
end torque properties.  They have had great success with this engine in =
their direct injection hydrogen testing - air is drawn into the intake =
chamber and after the apex closes off the chamber, the required fuel is =
squirted directly into the chamber.

I am disappointed in the news over the last year or so that the rumored =
new Rx-7 has been shelved for now.  If they came out with a 16X Rx-7 =
right now, I would buy one immediately.

> On Nov 7, 2014, at 12:22 PM, Luciano, Luis I CIV PEOSUB, PMS404P =
<flyrotary@lancaironline.net> wrote:
>=20
> Friends,
>=20
> I may be late to the discussion but I recently saw an interview in =
YouTube which spoke of design improvements to the rotary engine.  I =
wanted to ask the collective  opinion on the feasibility of making this =
modification.  It talks about preventing some compression loss (and =
wasted fuel) from the apex going over the spark plug hole as well as =
offsetting the ignition chamber on the rotor (see link below).
>=20
> http://www.youtube.com/watch?v=3Dm3pCLjHZmhM
>=20
> Regards,
>=20
> Luis Luciano
> Velocity XL-5 "Dulcinea"


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   =
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