article thumbnail

DENSO develops new 2500-bar diesel common rail system; reductions in fuel consumption and emissions

Green Car Congress

In a DCR, the fuel—highly compressed by the fuel pump—is stored in an accumulator called a common rail. Storing highly compressed fuel in the common rail not only further increases the pressure of the fuel but also controls fuel injection pressure and timing without being effected by the engine’s rotation speed.

Diesel 207
article thumbnail

Hydraulic Hybrid Systems and EMI Partner to Target Fleet Retrofit Market; First Retrofit Underway

Green Car Congress

HHS says that its system is expected to deliver at least a 40% improvement in fuel economy made possible through regenerating braking energy that is then used during acceleration. HHS has also purchased a totaled 2008 Chevy Silverado HD 2500 that will serve as a demonstration vehicle. HHS system on the test stand.

Fleet 252
article thumbnail

Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

Under this test program, Renergie will use variable blending pumps, not splash blending, to precisely dispense hydrous ethanol blends of E10, E20, E30, and E85 to test vehicles for the purpose of testing for blend optimization with respect to fuel economy, engine emissions, and vehicle drivability. C in the anhydrous state.

article thumbnail

National Research Council Report on Americas Energy Future Highlights Vehicle Efficiency Technologies, Conversion of Biomass and Coal-to-Liquids Fuels, and Electrifying the Light Duty Fleet with PHEVs, BEVs and FCVs

Green Car Congress

Improvements result from an optimistic scenario achieving doubling of new vehicle fuel economy in 2035 from today’s value. For transportation, the report concludes that petroleum will continue to be an indispensable transportation fuel during the time periods considered. million barrels per day in 2008) will be challenging.

Coal 150
article thumbnail

Volkswagen’s 1.0L eco up! natural gas vehicle offers 79g CO2/km

Green Car Congress

The operating mode indicator and the fuel economy and tank level gauges in the instrument cluster are also based on engine controller computations. When operated with low gas, the calorific value of which is lower due to its lower methane content, the fuel injection time is adjusted accordingly. The new version for the eco up!

Gas 291
article thumbnail

Plug In America - Links and Resources

Tony Karrer Delicious EVdriven

1 Point Reyes EVs Did You Know? Prop 87 Missed Opportunity RAVs to Keep Rolling in LA Holiday EVangelism ZEVTech Saving RAVs Holiday EVangelism Who Killed the Electric Car?

Plug-in 30
article thumbnail

Wal-Mart Estimates 50% of Fleet Efficiency Gain by 2015 Could Come from Vehicle Technology, 50% from Operational Improvement

Green Car Congress

Wal-Mart Stores has set of goal of increasing total fleet efficiency by 100% from 2005 to 2015, and has already exceeded its 2008 interim goal of a 25% increase, according to Chris Sultemeier, Wal-Mart’s Senior Vice President of Transportation. How we load the trailer, the effects of packaging.

2015 191