View Single Post
Old 01-25-2012, 03:18 AM   #89 (permalink)
oil pan 4
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,268

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 273
Thanked 3,569 Times in 2,833 Posts
Quote:
Originally Posted by merccom View Post
you can scale it down, the problem is making useable power in a vehicle size package.

remember that thing only spins about one hundred rpm. if you scale it down to 18wheeler engine size you'll only be making 20 or so horsepower

figure your average detroit makes around 1100 pounds of torque at 1200rpm

if you take that same 1100 ft/lbs and drop it back to 100rpm

you have 1100ft/lbs * 100rpm = 110,000/ 5250 = 20.95hp

so you have a road tractor engine that puts out 21 hp.

it would make an awesome stationary engine for a small generator.
You could put a 2 stroke diesel in an on road vehicle.
You cant turn it at 100rpm, it will barely run.
The smallest 2 stroke diesel I know of that you could get in an on road passanger vehicle would be a detroit diesel 4-71 engine and it would have to go in a big truck sized vehicle or at least a small bus since the engine is so tall.
The regular 4-71 makes about 110hp, there is a turbocharged version that makes a little more power. Max RPMs is about 2250.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote