That's interesting and heres the difference: In an auto-ignition diesel engine, (no electrical sparking plug—the hot air of compression lights the injected fuel) the CR will customarily exceed 14:1. Ratios over 22:1 are common. The appropriate compression ratio depends on the design of the cylinder head. The figure is usually between 14:1 and 16:1 for direct injection engines and between 18:1 and 23:1 for indirect injection engines. I wonder though what difference would that make? Would the fuel ignite more eficiently at a higher compression compared to low? Would the ignition temperature be higher the higher the compression or is it just a design issue..........
/KJ.
2010/12/29 briankk <briankk@att.net>
FWIW, the Cummins has 16:1 compression, I think the 240 is 21:1...
bk
--- On Tue, 12/28/10, ygmir111 <ygmir111@att.net> wrote:
> From: ygmir111 <ygmir111@att.net>
> Subject: [diesel_mercedes] running centrifuged oil
> To: diesel_mercedes@yahoogroups.com, 126diesel@yahoogroups.com
> Date: Tuesday, December 28, 2010, 2:23 PM
> HI all,
> so, I'm running my first batch of WMO, in my 93 Dodge
> Cummins.
> I'm using this truck, as my first test, since, it is
> easiest starting, and
> probably better compression than the 240D.
>
> I'm running 25% WMO, to diesel.
> It seems to start and run fine.
> Slightly more smoke, I think.
>
> so, so far, so good.
>
> I may wait for warmer weather, to put the WMO fuel in the
> 240, just from
> starting issues.
>
> Henry
>
>
>
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