TDIMeister's Profile

Even 50% electric efficiency is possible according to reporting on this site: https://www.greencarcongress.com/2018/11/20181130-rr.html

Commented Dec 30, 2019 on Three CA LCFS pathway applications for swine manure to Bio-CNG, Bio-LNG, and Bio-L-CNG; negative triple-digit CIs at Green Car Congress

Never heard of Bio-L-CNG before - what is it? Instead of flaring off the gas, it should be burned in gensets @40-45% electric efficiency and help with California's persistent rolling blackout problem!!!

Commented Dec 30, 2019 on Three CA LCFS pathway applications for swine manure to Bio-CNG, Bio-LNG, and Bio-L-CNG; negative triple-digit CIs at Green Car Congress

In the words of Rodney King, "Can we all (advanced gasoline, Diesel, hybrid and EVs) just get along?"

Commented Feb 22, 2019 on ADAC testing finds new diesel cars cleaner than required; Euro 6c and 6d-Temp vehicles well below the permissible NOx limits at Green Car Congress

Electric motors operate with efficiencies of over 90% over a large part of the map, so the claim of "31% more efficient than average" is suspect. If one were to significantly understate the efficiency to 75%, a 31% improvement would yield 98.25%, yet another implausibility.

Commented Oct 20, 2017 on Visedo introducing new SRPM motor design for buses; 10% increase in power, better cooling at Green Car Congress

Hydrogen addition extends the combustible limit and counteracts the declining flame speed of dilute and low-oxygen concentration (i.e. via EGR) combustion.

Commented Sep 3, 2013 on Viable exhaust-driven on-board ethanol reforming for improvements in fuel economy and emissions at Green Car Congress

Treehugger said: "So I understand that the gain in efficiency mainly comes from the fact that they can run very lean and thus use high compression ratio. Lean running engine are efficient and produce low NOx but they are not stochiometric so the exhaust treatment is made more difficult." What I read from it is that the efficiency benefit comes mainly from very rapid combustion as the result of the issuing jet from the prechamber igniting the main charge at multiple sites. It *can* run lean while maintaining fast combustion and low CoV, but benefits are also seen with stoichiometric operation and would thus be compatible with three-way catalysis.

Commented May 25, 2012 on Mahle gasoline-only pre-chamber jet ignition combustion system yields diesel-like thermal efficiency of 42.8%; 45% achievable with engine upgrade at Green Car Congress

BSFC differs from ISFCn only by FMEP. Wall heat transfer is already accounted for.

Commented May 25, 2012 on Mahle gasoline-only pre-chamber jet ignition combustion system yields diesel-like thermal efficiency of 42.8%; 45% achievable with engine upgrade at Green Car Congress

Interesting stuff. Hope an OEM signs-up FEV to implement HECS in a production vehicle.

Commented Apr 5, 2011 on FEV to show 2nd generation diesel High Efficiency Combustion System at 2011 SAE World Congress at Green Car Congress

GE has the technology though its Jenbacher division to utilise flare gas and other low heating value gaseous fuels in cost-effective gensets to generate electricity. Refineries and gas pipeline companies should be compelled through banning the practice of flare gas burn-off or release so that they can be converted while producing something useful out of it.

Commented Apr 5, 2011 on GE study finds 5% of world’s natural gas production wasted per year by flaring at Green Car Congress

It will be interesting to see how F1's application of 500 bar injection technology trickles down and benefits road vehicles.

Commented Dec 11, 2010 on F1 specifies 4-cylinder 1.6L engines from 2013; energy recovery systems, high-pressure injection and energy management at Green Car Congress

TDIMeister is now following The Typepad Team

Dec 10, 2010