Diesel engines?

[FLYBOYJ]

Just catching up to this discussion. This was announced over the summer....

"The new 182 will be available in next year's second quarter at a base price of $515,000, replacing the avgas-burning Turbo 182, production of which will end once the NXT hits the market. The turbocharged, direct-drive SMA SR305-230E-C1 diesel engine is already FAA and EASA certified. The engine features single-lever control with no mixture connected to a three-blade propeller operating at a constant speed of 2,200 rpm. SMA has facilities in France and Grand Prairie, Texas."


Cessna Introduces Jet-A Skylane | Flying Magazine

 

[Aurum]

That would be nice

p.160 - longitudinal section
p.161 - section of cyl. bank
p.162 - engine's cross section
p.165 - section of vertical transmissions

I also have rater comprehensive exposition of Deschamps diesel but it's in Russian...

 

[PWR4360-59B]

will be equipped with a 230-horsepower diesel engine from French manufacturer SMA Safran

Kinda clears that up, of who will be making the engine, I guess they didn't want to chance having a continental engine.

Looks like it is 227 HP at 2200 rpms, BSFC .365, weighs 455 lbs, mechanical injection pump, air and oil cooled, turbo charged,
burns 42% less fuel than a compairable gas engine and reduces cost by more than 50%.

 

[FLYBOYJ]

Kinda clears that up, of who will be making the engine, I guess they didn't want to chance having a continental engine.

It wasn't a matter of taking a chance on Continential - it was a matter of using a certificated engine that met their needs. Continental makes good engines but Cessna has used Lycoming engines in more recent times.

 

[thunderbird]

I recently found information on a Russian bomber, the Ermalaev ER-2, sometimes called the Yermalaev or Yermalayev YER-2 or DB-240. Early patriotic war bomber with Diesel engines. The airplane had the range and was used to bomb Berlin early in the war. Some posts indicate the raid was not so successful, that only two of the thirty-five airplanes launched were able to drop bombs on Berlin, but this was very early in the war. The production apparently was stopped because the Germans overran the factory.

Its a very unusual airplane:

Modeling the VVS: Ken Duffy's Er-2

Yermolayev Yer-2 - Wikipedia, the free encyclopedia

 

[Piper106]

One thing not mentioned yet is the lower fire danger of diesel fuel. Diesel fuel vapors have far less of the flammablity of gasoline. While there still would have been fires in diesel power aircraft, the percentages of battle damaged aircraft catching fire would have been lower than gasoline powered planes. As such, in my mind, diesel power would have been a good fit with ground attack aircraft. It is unfortunite that a 1600 to 2400 HP diesel air cooled radial was never built.

 

[gumbyk]

Also, You have the added problem of the diesel 'gelling' in the cold temperatures, so you need the extra plumbing and weight of a fuel heater.

Then, to add another problem to the mix, in the tropics, fungal contamination is a major problem with the humidity and heat. This is something that is still a problem today with Jet A1

 

[gumbyk]

One thing not mentioned yet is the lower fire danger of diesel fuel. Diesel fuel vapors have far less of the flammablity of gasoline.

Diesel vapour will explode, given the right mixture: DIESEL EXPLOSION

 

[Shortround6]

100 degrees F is about the "magic" number for diesel. Below that and it doesn't give off enough vapor to support combustion ( you may have enough to flash) above that and you are starting to get enough vapors to support sustained combustion.

DO NOT stand in a puddle of spilled Diesel on a hot summer day on a black top road flicking cigarettes about thinking you are safe

20mm shells exploding in the fuel tank may cause vaporization.

 

[Piper106]

Diesel vapour will explode, given the right mixture: DIESEL EXPLOSION

Never said diesel fuel wouldn't explode under the right conditions. It is a combustable liquid, and given a direct hit with a large enough shell there be misting, ignition, and a sustained fire. Nor does every hit of a projectile on a gasoline filled fuel system result in a fire.

The point I was trying to make is that in some percentage of combat incidents that would ignite gasoline, diesel fuel would not ignite. In the case of an multi-thousand air plane air 'force' over years of combat the change in fuel might result in hundreds of fewer aircraft catching fire.

gumbyk; "Also, You have the added problem of the diesel 'gelling' in the cold temperatures, so you need the extra plumbing and weight of a fuel heater." There is a high probability that aviation diesel fuel could be produced suitable for operation down to -46 deg C / - 50 deg F and a 60 deg C / 140 deg F flash point based on the production of US Navy / NATO JP-5 turbine fuel which has similar freezing and flash points.

 

[krieghund]

I remember fire training exercises in the USAF whereby the instructor would try to lite off a 12 foot diameter shallow reservoir about an inch deep with JP4. Took him a while to get it to lite off then we would be shown the proper and improper ways to extinguish the fire. It was of course noted once several re-lights where accomplished it was much easier to ignite due to the temperature of the JP-4 medium having been increased.

 

[krieghund]

Here is some diesel developments from the forties.

 

[clifton]

This technique over many decades and suggest that you do not believe the actual is a certain aspect, as a issue in one place will often appear as a indication somewhere else. An example is carbs issues are often wrongly presumed to be governor issues.

mechanics brisbane

 

[Njaco]

This technique over many decades and suggest that you do not believe the actual is a certain aspect, as a issue in one place will often appear as a indication somewhere else. An example is carbs issues are often wrongly presumed to be governor issues.

What the hell are you talking about?

 

[Thorlifter]

Uhhhhhhhhhhhh......................What?

 

[GrauGeist]

Uh...I'm going out on a limb here and assume that english is not someone's primary language?

 

[Denniss]

Sounds like a spambot trying to get above 5 posts to be able to post links/images?

 

[tomo pauk]

This member has no problems to post links in his 1st post:

http://www.ww2aircraft.net/forum/naafi-px/practice-lawyer-specializes-securities-law-36075.html#post988422

 

[davebender]

650kg.
1,000hp.

A good engine for long range bombers, transports and patrol aircraft if Junkers can make it reliable and produce it for a reasonable cost.

 

[Njaco]

He's done......