Idle musings about diesel series hybrid - Page 2 - Fuelly Forums

Click here to see important news regarding the aCar App

Reply
 
Thread Tools Display Modes
 
Old 11-19-2009, 12:01 PM   #11
Registered Member
 
Join Date: Nov 2009
Posts: 4
Country: United States
My Heep gets about 18 mpg on a good day but it's got no guts. Anything I mounted on the underside would have to stand up to regular rock-bashings. I'm not sure what else I could do to improve the aero. I've heard that a steady-running diesel is about the most efficient (available) motor you could use to charge batteries. The minimum power/torque for the diesel would be what it would take to push the brick down the highway and reasonably recharge the battery pack. The dinky 4 cyl. I have in my Heep now weighs about 600 lbs, so the setup wouldn't be adding too much weight. Or would it?
__________________

eprobe is offline   Reply With Quote
Old 11-20-2009, 08:59 AM   #12
Registered Member
 
Join Date: Nov 2007
Posts: 1,852
Country: United States
Location: north east PA
Consider a regular car battery weighs around 50 or more pounds. You are going to need several of them. You can use lighter batteries, but will pay more.
The current Prius has 1.8L engine that likely weights in the range of yours. It also has a 100lb battery, alternator, and 2 motor/generators. You thinking of using a system that uses just EV for motive force, so you'll be able to downsize the engine, but that will also mean upsizing the motor.

Have you looked into modifying your existing engine? Guy I went to HS with had a mid 80's Jeep. IIRC, it was an inline 6 with carb, with mileage range from 6 to 20 mpg. A compete engine swap will be cheaper than your original plan. The battery alone will easily cost a $1000. Likely more, and those you can get at Wal-mart.
__________________

trollbait is offline   Reply With Quote
Old 12-31-2009, 04:56 AM   #13
Registered Member
 
Join Date: Nov 2009
Posts: 4
Country: United States
Uhg. Now I'm thinking about going to a hydraulic transmission w/ accumulators. I might be able to afford used hydraulic stuff.

Trollbait:the gutless wonder Iron Duke is the most efficient carburated stock Jeep engine available. I've got a feeling that any other gasoline I-4 I could put in a CJ-5 would get about the same mileage. Fuel injection might increase mileage by 1-4 mpg but the expense and hassles would more than offset the savings as far as I'm concerned.

I should mention that when I go wheeling, I go way, way far away into the wilderness. I try to keep the Heep as simple as possible in case I have to conduct emergency field repairs.

Possible mods on present engine:

Switching to electric radiator fan. But it violates the K.I.S.S. principle and I've already got a very light-weight durable plastic fan stuck to the water pump.

Hot air intake: wouldn't be too hard to do but I've studied the posts and I'm not convinced it works. Consider counterclaims about cold-air intakes.

Put a turbine head on my alternator and stick it in the exhaust pipe: Would probably actually be pretty reliable IF you solved problems of mounting, backpressure, finding the right turbine head (turbocharger wheel might be too delicate to handle alternator load), and alternator-cooling.

Turbocharge for mileage rather than power: heard this can be done but violates K.I.S.S. (although not egregiously 'cause if the turbo broke, you could just pull it off and run the engine stock) and the cheap Iron Puke engine will accept about 4 psi of boost max before it blows itself apart.
__________________

eprobe is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Vehicle Notes pb Fuelly Web Support and Community News 4 10-08-2008 11:38 AM
x-guage LxMike General Fuel Topics 1 02-20-2008 11:06 PM
Timing chain and FE bowtieguy Experiments, Modifications and DIY 22 11-11-2007 08:48 AM
Amazed by the SGII GeekGuyAndy General Discussion (Off-Topic) 7 08-18-2007 11:25 PM
PepsiCo Connections? SVOboy General Discussion (Off-Topic) 3 10-12-2006 04:52 PM

» Fuelly iOS Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:51 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.