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Even 50% electric efficiency is possible according to reporting on this site: https://www.greencarcongress.com/2018/11/20181130-rr.html
Three CA LCFS pathway applications for swine manure to Bio-CNG, Bio-LNG, and Bio-L-CNG; negative triple-digit CIs
Element Markets Renewable Energy (EMRE) has filed applications for certification of three California LCFS (Low Carbon Fuel Standard) Tier 2 pathways for biomethane (Bio-CNG, Bio-LNG, and Bio-L-CNG) from anaerobic digestion of swine manure produced by Valley View Farms located in Greencastle, Mis...
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!!!
Three CA LCFS pathway applications for swine manure to Bio-CNG, Bio-LNG, and Bio-L-CNG; negative triple-digit CIs
Element Markets Renewable Energy (EMRE) has filed applications for certification of three California LCFS (Low Carbon Fuel Standard) Tier 2 pathways for biomethane (Bio-CNG, Bio-LNG, and Bio-L-CNG) from anaerobic digestion of swine manure produced by Valley View Farms located in Greencastle, Mis...
In the words of Rodney King, "Can we all (advanced gasoline, Diesel, hybrid and EVs) just get along?"
ADAC testing finds new diesel cars cleaner than required; Euro 6c and 6d-Temp vehicles well below the permissible NOx limits
In Germany, testing by ADAC (Allgemeine Deutsche Automobil-Club eV) has found that all the Euro 6c and 6d-Temp vehicles that have been measured on the road to date meet much stricter requirements nitrogen oxides (NOx) than required by the EU. In the test, the cars were not only significantly be...
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.
Visedo introducing new SRPM motor design for buses; 10% increase in power, better cooling
Finnish manufacturer Visedo is unveiling a new electric motor design at BusWorld 2017 that is optimized for the bus market and ready for mass manufacture. With the new S-model PowerDRUM, Visedo has achieved a 10% increase in power output as well as better cooling. Visedo says that the upgrades ...
Hydrogen addition extends the combustible limit and counteracts the declining flame speed of dilute and low-oxygen concentration (i.e. via EGR) combustion.
Viable exhaust-driven on-board ethanol reforming for improvements in fuel economy and emissions
Schematic diagram of the successful “shoebox” reformer design and a picture of the core, after insertion of the catalyst. Credit: ACS, Sall et al. Click to enlarge. A team at Monsanto and colleagues at AVL Powertrain have successfully designed and demonstrated an onboard low-temperature etha...
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.
Mahle gasoline-only pre-chamber jet ignition combustion system yields diesel-like thermal efficiency of 42.8%; 45% achievable with engine upgrade
Experimental results at part load (1500 rpm, 4.7 bar IMEPn) showing performance of jet ignition with vaporized gasoline. Results showed a 19% fuel economy improvement over conventional SI combustion at this operating point. Source: Mahle. Click to enlarge. Mahle Powertrain has refined its pr...
BSFC differs from ISFCn only by FMEP. Wall heat transfer is already accounted for.
Mahle gasoline-only pre-chamber jet ignition combustion system yields diesel-like thermal efficiency of 42.8%; 45% achievable with engine upgrade
Experimental results at part load (1500 rpm, 4.7 bar IMEPn) showing performance of jet ignition with vaporized gasoline. Results showed a 19% fuel economy improvement over conventional SI combustion at this operating point. Source: Mahle. Click to enlarge. Mahle Powertrain has refined its pr...
Interesting stuff. Hope an OEM signs-up FEV to implement HECS in a production vehicle.
FEV to show 2nd generation diesel High Efficiency Combustion System at 2011 SAE World Congress
FEV, Inc., will exhibit its High Efficiency Combustion System (HECS) diesel engine at the 2011 SAE World Congress, 12-14 April at Cobo Center in Detroit. The HECS engine incorporates novel and conventional technologies to achieve low CO2 emissions and a 17% reduction in fuel consumption, while a...
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.
GE study finds 5% of world’s natural gas production wasted per year by flaring
Gas-flaring countries and trends. Click to enlarge. A newly released GE study—Flare Gas Reduction: Recent Global Trends and Policy Considerations—estimates that 5% of the world’s natural gas production is wasted by burning or “flaring” unused gas each year, despite some progress on the flari...
It will be interesting to see how F1's application of 500 bar injection technology trickles down and benefits road vehicles.
F1 specifies 4-cylinder 1.6L engines from 2013; energy recovery systems, high-pressure injection and energy management
The FIA’s World Motor Sport Council (WMSC) has approved the introduction of a new specification engine for Formula One racing from 2013, underlining the FIA’s stated commitment to improving sustainability and addressing the needs of the automotive industry. Following dialogue with the engine man...
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Dec 10, 2010
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