View Single Post
Old 01-11-2017, 08:46 PM   #91 (permalink)
oil pan 4
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,185

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: 270
Thanked 3,528 Times in 2,802 Posts
With super heat engines you are going to produce quite a bit of waste heat. That's all there is to it.

The problem with gas engines is their thermodynamic cycle. You have isobaric intake losses right away on the start of your cycle. Then with heat addition you are using constant volume heat addition. In theory you add all the heat at top dead center, but we know that doesn't happen.
In theory a gasoline engine can only be a maximum of about 50% efficient.
Institutions have spent millions of dollars trying to achieve this and still the closest they can get in the lab doesn't really get close to maximum theoretical efficiency.

If you think you can best the lot of them I say go for it.

__________________
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
The Following User Says Thank You to oil pan 4 For This Useful Post:
ChazInMT (01-11-2017)