yarross's Profile

For sure there's ugly non-democratic government in Mozambique that needs to be overthrown.

Commented Oct 20, 2011 on Eni announces a giant gas discovery offshore Mozambique at Green Car Congress

Why not? One piston controls exhaust port, the second one intake port. Just a matter of phase angle control between those two.

Commented Oct 6, 2011 on Study finds Achates two-stroke opposed-piston engine shows indicated thermal efficiency of 53% at Green Car Congress

@Trevor You've assumed 200+V per unit. Doubt that any ionic capacitor could reach even 10V before electrolyte starts to decompose.

Commented Sep 30, 2011 on National University of Singapore researchers devise membrane-based supercapacitors; possible new route to high-performance supercapacitive energy storage at Green Car Congress

They could do even more by giving up CVT for DSG-like transmission.

Commented Sep 10, 2011 on Honda will introduce a refreshed Insight hybrid at Frankfurt; 96 gCO2/km at Green Car Congress

Doubt that the batt pack will be integrated into drive. It's too bulky, too heavy and needs to be located in safe area with emergency disconnect in the case of an accident.

Commented Sep 4, 2011 on Hitachi Cable develops smallest compact connectors yet for use in power harnesses for hybrid and electric vehicles; some 40% reduction in connector volume at Green Car Congress

There's much space for improvements: http://www.youtube.com/watch?v=UnUr8DYne-k

Commented Sep 4, 2011 on US EPA seeking to award up to $1M for project to mitigate black carbon from diesel sources in Russian Arctic at Green Car Congress

Another way to increased efficiency is to use Atkinson-like cycle in diesel engine - this separates compression ratio from expansion one and allows to expand gases to the level just sufficient to drive the exhaust.

Commented Aug 6, 2011 on Mazda’s new SKYACTIV gasoline and diesel engines are steps on the road to its “Ideal Engine”; focus on compression ratio at Green Car Congress

Pu-238 is not a weapon material. It's not even fissile. RTGs and RHUs are not fission devices, just decay ones. Many other decaying isotopes may be used (waste and cheap Sr-90 has been considered, but it forms highly soluble salts and can replace Ca in bones, so it's use is far more risky), but Pu-238 has superior properties (very high decay heat). Practical fusion devices (except thermonuclear weapons) don't exist. Check facts before posting.

Commented Jul 14, 2011 on Schiff Amendment would provide resources to restart Plutonium-238 production for RTGs at Green Car Congress

This results in more deceleration energy being recovered and increases the single charge cruising range by about 20%. Hmm this could be the whole gain from regen, not the improvement itself, right?

Commented Jul 6, 2011 on Mitsubishi Motors offering i-MiEV in two trim levels: more affordable and more capable at Green Car Congress

@HarveyD: Converting CO2 to fuel is costly in terms of used energy. Better to convert directly feed syngas or use electricity to charge batteries. Do not make systems more complicated than absolutely necessary.

Commented Jun 25, 2011 on Modified SOFC anodes allow operation at lower temperatures with carbon-containing gases; potential for much more efficient and cleaner generation of electricity from coal at Green Car Congress

GaN/GaAs devices may win over SiCs due to lower substrate production costs.

Commented Jun 22, 2011 on Cree introduces new family of silicon carbide schottky diodes; for higher performance at lower cost for power conversion applications at Green Car Congress

I like the concept of liquid iron mediated gasification.

Commented Jun 20, 2011 on Oak Ridge team reveals surface structure of lignin; highly folded surface impedes enzymatic hydrolysis at Green Car Congress

@Harvey: One could use IVT. It's an ultimate solution for ICE transmission.

Commented Jun 11, 2011 on ZF to present new 9-speed automatic transmission for front-transverse drive; fuel savings up to 16% compared to 6-speeds at Green Car Congress

Potentially good battery, but introduced at least 5 years late.

Commented May 17, 2011 on PowerGenix enters micro-hybrid market with Nickel-Zinc batteries at Green Car Congress

Hmm Robert Zubrin should be proud. Mars on Earth. Storing excess energy in pumped reservuars makes more sense. It's cheap, turnaround efficiency is high, technology is very mature.

Commented May 16, 2011 on Audi unveils e-gas project: synthetic methane from the methanation of green hydrogen; series production of CNG models in 2013 powered by e-gas at Green Car Congress

It would be worth research to merge LiS chemistry with solid polymer electrolyte used in LMP battery, no chance to dissolve active material in unwanted way.

Commented Jun 4, 2009 on Researchers Develop Electrode Materials for High-Capacity Li-S Battery Cells at Green Car Congress