Interesting stuff, engine wise, from Achates.

[difflock]

I have been interested in this engine technology since I first happened across it a few years ago, they went into partnership with Cummings for a US military contract. Then total silence.

now this teaser

 

[aspenarb]

It looks like a rehash of the 1950's TS3 Commer engine using gears instead of rockers.

 

[GarethM]

Why don't half of the cylinders stop moving at low power tick over ?.

 

Plus aren't most tank engines turbines to utilise whatever fuel is available.

[openspaceman]

13 minutes ago, GarethM said:

 

 

Plus aren't most tank engines turbines to utilise whatever fuel is available.

Most tank engines were multi fuel to satisfy NATO requirements but they  dropped it in favour of single fuel turbo charged diesels, or gas turbine in the american mbt.

 

All these later opposed piston engines were based on a 1930s Junkers Jumo diesel aero engine which in UK Napier developed into the most efficient engine for maritime patrol aircraft, the napier nomad, a hybrid turbo assisted diesel. It never went into production as jets took over.

 

The deltic was the boat and train engine that came from the same firm.

 

When the requirement for multifuel armoured vehicle engines became a requirement Rolls Royce developer the problematic L60 and K60 engines.

 

The major problem with this type of piston ported engine was excessive lubrication oil consumption. A trade off in war time but an expense and pollution issue nowadays.

 

I wonder how Arcate are addressing this.

[GarethM]

I knew about the diesel being effectively the standard fuel, as most can also utilise aircraft fuels or kerosene, just lacks the lubricants.

 

As they say, very few new ideas, the real problem battlefield wise is dirty fuels.

 

That was the brilliance of the original Otto, it would burn anything oil based.

 

I'm sure it was a Clarkson quote, their too bothered about the exhaust than the big explosive thing being fired out the front.

[difflock]

From memory this engine is capable of being, or is inherently  "fuel agnostic" to sound all hi-faluting.

[openspaceman]

23 minutes ago, difflock said:

From memory this engine is capable of being, or is inherently  "fuel agnostic" to sound all hi-faluting.

I think the multifuel engines would run on anything from gasoil through kerosene, avtur and low octane petrol. As they depend on compression ignition they will not fire on neat high octane petrol or avgas as that would need a spark.

 

The thing is they run well on gasoil/diesel but white smoke badly on kerosene, at least the K60 in the 432 I tried did.

[Stubby]

7 hours ago, openspaceman said:

I think the multifuel engines would run on anything from gasoil through kerosene, avtur and low octane petrol. As they depend on compression ignition they will not fire on neat high octane petrol or avgas as that would need a spark.

 

The thing is they run well on gasoil/diesel but white smoke badly on kerosene, at least the K60 in the 432 I tried did.

If it would run on liquid hydrogen that would be a neat trick .

[Conor Wright]

Bit of a tangent, but I came across a good YouTube channel a while back called Mr hewes. They restore tanks and the occasional old bit of plant. not really my area of interest but the banter had me coming back for new videos, well funny at times with that "top gear" style of humour.

Worth a watch if any of you haven't seen them already.

[Stere]

 

 

 

 

 

 

I posted this before a strimmer with a rotarty engine. Selling them in japan

 

 

 

Gonna be used on flying cars apparently! 🙂

 

https://www.kaaz.co.jp/en/Spec/VT740(W)KZ-CK1.pdf

 

purple monster