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They didn't use the cheat-diesel emissions in the study.
Bob Wilson
The importance of considering non-exhaust traffic emissions; the role of EVs
Regulatory regimes seeking to reduce emissions from transport have largely focused on tailpipe emissions—i.e., the criteria pollutants and CO2 that emerge with the exhaust from the tailpipe. However, there is more than 15 years of research showing that the contribution of non-exhaust primary par...
The 'expected' values need objective measurements which fortunately can be done with road-size metrics today. It won't be the first time that a paper study crash into reality.
I am a little concerned with all three models have exactly the same total value. It suggests the basis of estimate needs empirical observation.
Bob Wilson
Study finds total PM10 emissions from EVs equal to those of modern ICEVs; role of weight and non-exhaust PM
A new study by a team from the University of Edinburgh and independent engineering company INNAS BV has found that, when factoring in the additional weight and non-exhaust PM factors, total PM10 emissions from electric vehicles (EVs) are equal to those of modern internal combustion engine vehicl...
So it takes 745 W / 48 V = 15.5 A for 1 HP. Would you like to drive a 1 hp car?
Ok, let's go to 10 hp, 155 A so now we're talking conductors the size of a dime.
This is total nonsense. Bring on the examples so we can get over it as soon as possible.
Of course it will appeal to accountants at car companies … not engineers but the accountants like the ones who led GM and Chrysler to their excellence in 2008.
Accountants in car companies should be treated with the respect and pay of a secretary, low level. They have no business making faux engineering decisions.
Bob Wilson, Huntsville, AL
Delphi unveils new 48V mild hybrid system; working with two OEMs toward production within 18 months
Delphi Automotive PLC unveiled a 48-volt mild-hybrid vehicle solution; the company confirmed it is working with two global automakers and could see production within 18 months. Showcased in a Honda Civic 1.6-liter diesel vehicle at the company’s annual investor update in London, Delphi’s 48-v...
Well if they have hired Wayne Gertes of CleanMPG.com as a 'technical consultant,' they can incorporate hypermiler control laws. The cars will be a great success 'pulse and gliding' and running at an average speed under 25 mph. Yes, this will finally prove the success of hypermiling in a commercial product.
Bob Wilson
Study: Combination of active and passive engine-off coasting delivers optimal fuel savings with 48V hybrid systems
A study by Germany-based automotive supplier HELLA found that the combination of active and passive engine-off coasting and recuperation using a 48V mild hybrid system shows the best potential to reduce CO2 emissions for all car segments, with the highest potential in the larger car segments, fo...
One of the undocumented features of the Prius is it has a reasonable towing capability. All it lacks are stronger rear springs that can be added, after-market. I know because I've towed 1,700 lbs of trailer and airplane over 600 miles and others are towing similar loads. Individual Prius owners, like the first plug-in Prius conversions, are expanding the envelope. We can only hope Toyota 'gets a clue' and shares the Prius towing capabilities and/or comes out with a light pickup truck and utility van.
Top 10 Best-Selling Cars: April 2012
Eight of March's 10 best-sellers returned to the table in April, but one of the newbies may surprise you. In March, an incentive-heavy Nissan Altima fell just 1,517 cars short of the redesigned Toyota Camry, clinching the No. 2 best-selling car position. Incentives remain high, but Altima sale...
The problem comes from NHTSA report DOT HS 811 204 that plays a math trick: "1.8%" to "1.0%" turning and "5.3%" to "2.9%" backing, to claim a doubling of risk for 19 and 7 incidents (table 6a.) But hybrids have fewer straight line incidents "44%" to "47%" projecting 109 fewer incidents. The math in the report does not match the false hazard claim.
House bill H.R. 734 is still in committee so there is time to call your Congressman in opposition. Don't be surprised if they are listed as a cosponsor to this lame legislation.
Noisemaker Rule for EVs, Hybrids Clears Senate
Legislation that would require a certain noise threshold for hybrids and electric vehicles received unanimous approval in the Senate last week. The bill, dubbed the Pedestrian Safety Enhancement Act, would require a minimum sound requirement for all motor vehicles. The legislation now moves to...
I'll believe folks are serious about mileage when there is a "mph vs MPG" chart and a "hill climb" consumption chart in the owner's manual. Light planes do, medium planes do, even heavy planes do and have been doing this since aviation began. But cars are still stuck with two silly numbers and no guidance on how to achieve them.
Chevy Volt's 230 MPG Rating Taken Away
The 2011 Chevy Volt’s 230 mpg rating is no more, according to USA Today. The much-hyped rating came from using a preliminary EPA methodology that was meant to gauge the efficiency of plug-in hybrids. The 230 mpg rating was for city driving and required that the Volt be fully charged first, a...
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Jul 16, 2010
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