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The Pub For General Automotive Related Talk |
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#1 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 7,682
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I know it is nearly 5 years old, but I am not sure if many have seen it
Flat 4cylinder, 1000bhp, about twice that in torque, two massive turbos, a supercharger, no valves, no cylinder heads, and it's a diesel. It's got 8 pistons. And two crankshafts. Despite being a 4cylinder. Yes, it's an opposed piston engine, ie two pistons per cylinder facing each other. This is a new Cummins engine designed for military use, and it's pretty badass. It's 14.3ltr, so 1000bhp doesn't sound a lot for that capacity, but for a super low revving diesel that's intended to work for literally ever at full load, that's a lot- Most OEM 14ltr diesels make under 600bhp. And thanks to only 4cyl and no cylinder heads, it's relatively small too. It's a 2stroke engine, so no valves, and the inlet and exhaust ports are opened by the pistons literally uncovering the holes on the sides of the cylinder walls- Much like ports on a rotary engine for anyone not used to 2stroke engines. The turbos are twin Holset HE500 VGT turbos, which are 1000bhp+ capable units if pushed to their limits- Beasts. The mix of 2stroke, supercharged, twin turbo, flat 4, and opposed piston, means this thing should sound pretty insane too. Rather than me explain it all here, watch the video as the last parts are animations that shows exactly how the cranks are geared together and how the inlet and exhaust port setup works. https://youtu.be/OfBB6uNkYKM
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#2 | |||
Cabover nut
Join Date: Aug 2015
Location: Onsite Eastcoast
Posts: 10,827
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Quote:
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heritagestonemason.com/Fordlouisvillerestoration In order that the labour of centuries past may not be in vain during the centuries to come...... D. Diderot 1752
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#3 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,250
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Very impressive indeed.
Alot different to previous NT/N14 and Signature 600 Cummins! |
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#4 | ||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Canberra Region
Posts: 8,916
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There's a reason it's for military use - no emissions regulations.
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2016 FGX XR8 Sprint, 6speed manual, Kinetic Blue #170 2004 BA wagon RTV project. 1998 EL XR8, Auto, Hot Chilli Red 1993 ED XR6, 5speed, Polynesian Green. 1 of 329. Retired 1968 XT Falcon 500 wagon, 3 on the tree, 3.6L. Patina project. |
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#5 | ||
FF.Com.Au Hardcore
Join Date: Jun 2012
Posts: 1,016
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#6 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Canberra Region
Posts: 8,916
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Quote:
It's an impressive engine for off-road use.
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2016 FGX XR8 Sprint, 6speed manual, Kinetic Blue #170 2004 BA wagon RTV project. 1998 EL XR8, Auto, Hot Chilli Red 1993 ED XR6, 5speed, Polynesian Green. 1 of 329. Retired 1968 XT Falcon 500 wagon, 3 on the tree, 3.6L. Patina project. |
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#7 | ||
FF.Com.Au Hardcore
Join Date: Sep 2015
Location: nz
Posts: 1,846
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[Modern day Commer knocker motor lol
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Fgx xr8 winter white manual, gone but not forgotten 22 mitsubishi outlander XLS PHEV Au11 fairmont Ghia ported gt40p heads ,comp springs and locks Xe 264 cam,custom intake,pacemaker tri y headers 524nm torque 19 Triton GSXR manual |
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#8 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,744
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#9 | ||
FF.Com.Au Hardcore
Join Date: Jan 2010
Posts: 11,266
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A lot of the yank military runs on a common jet fuel, not diesel
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#10 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 7,682
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So clean kero?
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I reserve the right to arm bears
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#11 | ||
FF.Com.Au Hardcore
Join Date: Jan 2010
Posts: 11,266
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#12 | ||
VFII SS UTE
Join Date: Apr 2007
Location: Central Coast
Posts: 6,353
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i don't think it matters trev, it's still oil.
slightly less energy per liter.
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I don't often hear the sound of a screaming LSX. But when I do, So do the neighbours.. GO SOUTHS
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#13 | ||
VFII SS UTE
Join Date: Apr 2007
Location: Central Coast
Posts: 6,353
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Napier Deltic train engine.
https://en.wikipedia.org/wiki/Napier_Deltic https://www.youtube.com/watch?v=jPUy9a3xi4w
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I don't often hear the sound of a screaming LSX. But when I do, So do the neighbours.. GO SOUTHS
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#14 | ||
Peter Car
Join Date: Dec 2004
Location: geelong
Posts: 23,145
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#15 | |||
Cabover nut
Join Date: Aug 2015
Location: Onsite Eastcoast
Posts: 10,827
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Quote:
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heritagestonemason.com/Fordlouisvillerestoration In order that the labour of centuries past may not be in vain during the centuries to come...... D. Diderot 1752
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#16 | ||
FF.Com.Au Hardcore
Join Date: Jan 2010
Posts: 11,266
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#18 | ||
Peter Car
Join Date: Dec 2004
Location: geelong
Posts: 23,145
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#19 | |||
Cabover nut
Join Date: Aug 2015
Location: Onsite Eastcoast
Posts: 10,827
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Quote:
Quoted from trucksplanet site......."Gas turbine powered Kenworth had crossed the United States from north to south, and then worked briefly in commercial traffic plying on the western coast, between Seattle and Los Angeles, the tests, alas, failed. First of all, the trip lasted five or six hours longer than with conventional diesel engine: a gas turbine powered truck was accelerated slowly, heavily smoked, while squeezing the clutch pedal was a real torture (despite the fact that even the conventional old "Americans" have vere tight clutch). But the main problem was that the consumption of turbine was equaled a mile per gallon, or 235 l/100 km!" Makes the Cummins look like a fuel pincher.
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heritagestonemason.com/Fordlouisvillerestoration In order that the labour of centuries past may not be in vain during the centuries to come...... D. Diderot 1752
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#20 | |||
Peter Car
Join Date: Dec 2004
Location: geelong
Posts: 23,145
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Quote:
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