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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!uw-beaver!fluke!plato!sml
- From: sml@plato.ds.boeing.com (Stuart Lewis)
- Subject: Re: Soviet Air-cooled diesel engines
- Message-ID: <C0Gopo.104@plato.ds.boeing.com>
- Organization: Boeing Defense & Space Group
- References: <1993Jan4.233442.7561@wixer.cactus.org>
- Date: Thu, 7 Jan 1993 02:10:35 GMT
- Lines: 30
-
- >I was just watching C-span today and they featured a
- >soviet engine company on the Moscow Evening News.
- >
- >They produce air-cooled diesel engines that are claimed
- >to out perform the liquid cooled variety and can operate
- >at extremely high and low temperatures. Also, they are
- >supposed to be cheaper.
-
- Nothing magic about air-cooled diesels. A diesel runs *much* cooler
- than a gasoline fired motor as it is. You can take a conventional
- diesel, drain it, and idle it all day and not hurt it.
-
- Cheaper to build? You bet. When you don't have to wrap a water
- jacket around your block, you can save lots of money (material,
- engineering & design, manufacturing...).
-
- Outperform conventional (water cooled) diesels? Probably, but not
- by much. You're not having to pump X gallons of coolant per minute,
- so that horsepower can be used elsewhere. Likewise regarding the
- weight savings without the water jacket - that's a few hundred
- pounds more payload able to be used eleswhere.
-
- Extreme temperature performance? Well, you'll see the performance
- curve of the water cooled pass the air cooled at extremely high
- temperatures. However, unless the fuel tank and lines are
- isolated and heated, you'll get no efficiency from either motor at
- about 30 below. The fuel will jell.
-
- Stuart Lewis
- sml@plato.ds.boeing.com
-