Achates Closer To Production Of Radically Efficient Two-Stroke Truck Diesel

greencarreports ^ | Oct 15, 2014 | John Voelcker

[ckilmer]

That's the promise of Achates Power, which has been working for a decade on its horizontally opposed two-stroke diesel truck engine.

And it hopes to have a large-scale production contract with a global maker by 2020 or so.

But why promote the engine now?

[Army Air Corps]

Ping

[IncPen]

ping

[Balding_Eagle]

Suppose you could take an old engine concept discarded in the 1970s

It wasn't discarded in the 70's, it was stomped out by government bureaucrats. Namely, the EPA.

I still use one of those early Detroit Diesels, the 71 series, which you could buy from 1 cyclinder up to 16 cylinders depending on the power needs. It's a real fuel miser.

[RegulatorCountry]

I'm not understanding the reasoning behind this engine being vertical but canted to one side as opposed to just laying it flat for a horizontally opposed design a la Subaru, Porsche and others. The center of gravity is considerably lower for handling and safety advantages, the space is there side to side between the front suspension and it offers packaging flexibility as far as vehicle configuration, styling and aerodynamics.

[Lurkina.n.Learnin]

The 6-71 was pretty popular backwhen.

[mrsmith]

2-stroke are indeed inherently more efficient than 4-stroke engines.

[Eric in the Ozarks]

We operated a fueling vessel with a pair of 12V-149s and two 6-71s.
Durable, long lasting motors...

[Balding_Eagle]

There is a company which specializes in taking the old 2-71, rebuilding it, and connecting it to a generator.

[bigbob]

The opposed piston concept is a proven winner

[factoryrat]

Electromotive still manufactures 2 cycle diesel engines for locomotives, and virtually every EMD locomotive uses a 2 cycle engine of the “uniflow” design. One of the sticking points of these engines is that they consume their crankcase oil in operation, to the tune of about 5 gallons of oil for every 1000 gallons of fuel for older engines. Newer tier 3 and 4 engines consume virtually none of their crankcase oil. Turbocharging and multiple event injection make these engines a very efficient design.

[UCANSEE2]

Thanks for posting this article.

Now... scale the engine down, and use it in a hybrid to generate electricity.

[Sequoyah101]

Don’t get your hopes up. If they don’t have their suction in the right pit and haven not paid the right people the feds will figure out a reason to kill if. If they have done those things no matter how sorry it is we’ll get it shoved down our throats .... if we live that long.

[wjcsux]

Those old Jimmy’s made a lot of power for their size, 4-71’s and 6-71-s were everywhere once upon a time.

[wally_bert]

Try sitting beside this as an operator.

https://www.youtube.com/watch?v=humlGWYgjhQ

[fredhead]

a horizontally opposed design a la Subaru, Porsche...before these there was Volkswagen

[scottteng]

Diesel ?

[Red Badger]

CKILMER & ARMY AIR CORPS, THANKS FOR THE HEADS UP!

Rest In Peace, old friend, your work is finished.....

If you want ON or OFF the DIESEL ”KnOcK” LIST jut FReepmail me..... This is a fairly HIGH VOLUME ping list on some days.....

[PRIMA FACIA LAW]

thanks

[ckilmer]

this engine is coming in volume in about 5 years.