flyrotary@lancaironline.net Mailing List Archive

Rusty, I did a discription of the piezo system in another e-mail. The reason for the high pressure on many of the common rail systems is a very short duration of the pulses. The injectors will open several times per intake stroke. As to the other bosses they may try other locations for the DI injector to improve performance.
Bill Jepson

-----Original Message-----
From: Russell Duffy <rusty@radrotary.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, 19 Nov 2007 12:21 pm
Subject: [FlyRotary] Re: 16X Rotary Engine.

For gasoline N/A direct injection requires around 18K psi. Diesels use as high as 22K psi.

While this sounds scary, the equipment has been around for years and has proven reliability.

Bill Jepson

Hi Bill,

Since the injector is on top of the engine, I doubt it's going to need any significant increase in pressure, since there can't be any real compression at that point. I would think they'd fire the injector while intake air is still rushing in, to help with mixing, so there will likely be a vacuum, rather than pressure.

Still love the looks of this engine, and I'm with George, half of one would be nice too :-)

Cheers,

Rusty (machining my new damper adapter..or cutting off an appendage, too soon to tell)

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