Diesel engines: Bigger *is* better!

Olle P · 31st Jan 2006, 09:08 PM

Bigger engine means better fuel economy, and the best of the lot use only 118 grams of diesel per horsepower and hour (which is about half of what a regular truck engine consume).

The downside is that the power to weight ratio sucks, with 21kg engine weight per horsepower, gearbox and fluids not included.

Read more here: The most powerful diesel engine in the world.

Cheers
Olle

Adrian Wong · 1st Feb 2006, 02:51 AM

Hmm.. Does this apply to all diesel engines?

Adrian Wong · 1st Feb 2006, 02:53 AM

Wow.. That's a REALLY MASSIVE diesel engine!!!

Olle P · 1st Feb 2006, 05:47 AM

Quote:

Originally Posted by Adrian Wong

Hmm.. Does this apply to all diesel engines?

I actually think that with diesels bigger is better.
In this case there's also an improved overall design that increase efficiency further than a simple upscaling would do.

What puzzles me a bit is the background for these big engines. I thought shipping headed towards diesel-electric drive with multiple electrical engines mounted in steerable pods, like on QM2.

Cheers
Olle

Majormaggot · 1st Feb 2006, 09:50 AM

i wonder what the 0-60 time is

they need to add some NOS to that !

Olle P · 1st Feb 2006, 04:09 PM

Quote:

Originally Posted by Majormaggot

i wonder what the 0-60 time is

You mean 0-60 rpm? Half a minute or so, I'd guess...

Cheers
Olle

Chai · 2nd Feb 2006, 06:55 PM

Wow! This is crazy! LMAO!

PowerSlide · 2nd Feb 2006, 07:50 PM

the torque alone can move my house

Olle P · 2nd Feb 2006, 08:54 PM

Running a ship on a single engine might provide the best fuel economy for really long hauls, but the alternative to use a number of smaller diesels for a diese-electric drive have several advantages, as can be seen in the Ecoship project:

Flexibility, the installed power generating capacity can be used for various ship functions and different situations;
Propeller torque capability, full torque at any propeller speeds;
Permits running diesel engines at a stable load with smoother transients;
Permits running diesel engines at a constant speed;
Permits running diesels engines at a more efficient load at optimum specific fuel consumption, hereby reducing emissions and impact on the environment;
Uniform machinery; simple spare parts logistics, maintenance, crew training, etc;
Flexibility in location of main engines allows to optimise cargo space volume and arrangement;
Redundancy, both in the sense of safety and freedom in maintenance routines.

Seems better, IMO... unless you have a really huge ship that run best with half a dozen of these mega-diesels powering the generators.

Cheers
Olle

Trinity · 3rd Feb 2006, 07:13 AM

Quote:

Originally Posted by Olle P

Bigger engine means better fuel economy, and the best of the lot use only 118 grams of diesel per horsepower and hour (which is about half of what a regular truck engine consume).

The downside is that the power to weight ratio sucks, with 21kg engine weight per horsepower, gearbox and fluids not included.

Read more here: The most powerful diesel engine in the world.

Cheers
Olle

"118 grams of diesel per horsepower and hour"

So you are saying that huge engine runs a hour on 118 grams of diesel fuel???? That seems impossible!

31st Jan 2006, 09:08 PM	#1 (permalink)
Olle P Active Join Date: 12 Jan 2005 Location: Sweden Posts: 815 Reputation: 315 Rep Power: 9	*Diesel engines: Bigger is* better!** Bigger engine means better fuel economy, and the best of the lot use only 118 grams of diesel per horsepower and hour (which is about half of what a regular truck engine consume). The downside is that the power to weight ratio sucks, with 21kg engine weight per horsepower, gearbox and fluids not included. Read more here: The most powerful diesel engine in the world. Cheers Olle __________________ If you're not living on the edge you take up too much space... Asus A8E-N, Athlon64 X2 4600+, 1024MB Kingston value, XFX GF7800GT, Seagate 160GB/8MB

1st Feb 2006, 02:51 AM	#2 (permalink)
Adrian Wong Da Boss Join Date: 10 Oct 2002 Location: In front of my ASUS F8V notebook! Posts: 33,143 Reputation: 3730 Rep Power: 78	Hmm.. Does this apply to all diesel engines? __________________ Dr. Adrian Wong Tech ARP \| Blog @ Tech ARP \| The Free Trade Zone DYKT : The only offshore account I have is at the sand bank? We need PROGRAMMERS and TECHNICAL WRITERS! Contact us if you are a hot shot programmer or technical writer! My items for sale : 50x SD Card \| Memory Stick PRO \| Cyclone Energy Saver \| Seiko SS watch \| Tiger/Carlsberg beer jugs \| Travel Speakers \| Motorola V600 \| Nokia N90 SOLD! \| New Lowepro Mini Trekker AW Other items for sale @ the FTZ : Zalman CNPS9500 LED @ $20 \| Zalman CNPS7700 Cu @ $20 \| Zalman CNPS7000 Cu @ $20 \| Swarovski bracelet watches \| Dell 17" LCD \| Hi-Fi speakers \| English DIVX movies \| HP LaserJet toners! \| Office chairs

1st Feb 2006, 02:53 AM	#3 (permalink)
Adrian Wong Da Boss Join Date: 10 Oct 2002 Location: In front of my ASUS F8V notebook! Posts: 33,143 Reputation: 3730 Rep Power: 78	Wow.. That's a REALLY MASSIVE diesel engine!!! __________________ Dr. Adrian Wong Tech ARP \| Blog @ Tech ARP \| The Free Trade Zone DYKT : The only offshore account I have is at the sand bank? We need PROGRAMMERS and TECHNICAL WRITERS! Contact us if you are a hot shot programmer or technical writer! My items for sale : 50x SD Card \| Memory Stick PRO \| Cyclone Energy Saver \| Seiko SS watch \| Tiger/Carlsberg beer jugs \| Travel Speakers \| Motorola V600 \| Nokia N90 SOLD! \| New Lowepro Mini Trekker AW Other items for sale @ the FTZ : Zalman CNPS9500 LED @ $20 \| Zalman CNPS7700 Cu @ $20 \| Zalman CNPS7000 Cu @ $20 \| Swarovski bracelet watches \| Dell 17" LCD \| Hi-Fi speakers \| English DIVX movies \| HP LaserJet toners! \| Office chairs

1st Feb 2006, 09:50 AM	#5 (permalink)
Majormaggot Getting there Join Date: 5 Sep 2005 Posts: 169 Reputation: 59 Rep Power: 5	i wonder what the 0-60 time is they need to add some NOS to that ! __________________ Intel Pentium Dual Core E2160 @ 3.4GHz 1.425 Vcore, Asus P5W DH Deluxe, 4GB Corsair XMS twin X 2 800mhz, enermax galaxy 850w, Sound blaster X-FI Xtream Music, XFX 8800GT 512 MB @ 715 core 1000 mem 1730 shader, 2x 400GB Seagate HDD in Raid 0, 1x 250 GB WD HDD, 1x 120 GB WD HDD, A mighty Zalman 9500 cooler crying for help. and ArcticSliver 5, DVD drives n shizzle.

2nd Feb 2006, 06:55 PM	#7 (permalink)
Chai Administrator Join Date: 6 Oct 2002 Location: Maranello Posts: 28,127 Reputation: 4649 Rep Power: 82	Wow! This is crazy! LMAO! __________________ Chai (Contributor & Forum Admin) http://www.techarp.com/

2nd Feb 2006, 07:50 PM	#8 (permalink)
PowerSlide Super Active Join Date: 28 Aug 2004 Location: Penang, Malaysia Posts: 1,434 Reputation: 871 Rep Power: 15	the torque alone can move my house

2nd Feb 2006, 08:54 PM	#9 (permalink)
Olle P Active Join Date: 12 Jan 2005 Location: Sweden Posts: 815 Reputation: 315 Rep Power: 9	Running a ship on a single engine might provide the best fuel economy for really long hauls, but the alternative to use a number of smaller diesels for a diese-electric drive have several advantages, as can be seen in the Ecoship project: Flexibility, the installed power generating capacity can be used for various ship functions and different situations; Propeller torque capability, full torque at any propeller speeds; Permits running diesel engines at a stable load with smoother transients; Permits running diesel engines at a constant speed; Permits running diesels engines at a more efficient load at optimum specific fuel consumption, hereby reducing emissions and impact on the environment; Uniform machinery; simple spare parts logistics, maintenance, crew training, etc; Flexibility in location of main engines allows to optimise cargo space volume and arrangement; Redundancy, both in the sense of safety and freedom in maintenance routines. Seems better, IMO... unless you have a really huge ship that run best with half a dozen of these mega-diesels powering the generators. Cheers Olle __________________ If you're not living on the edge you take up too much space... Asus A8E-N, Athlon64 X2 4600+, 1024MB Kingston value, XFX GF7800GT, Seagate 160GB/8MB

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