Green Car Congress

NOVEMBER 26, 2013

Results of a study led by a team from the National Renewable Energy Laboratory on the impact of butanol-gasoline blends on light-duty vehicle emissions suggest that widespread deployment of n-butanol or i-butanol in the gasoline pool could result in changes to the estimated emissions of alcohols and carbonyls in the emissions inventory.

Gasoline 236

Gasoline Alcohol Blend Light Emissions 236

Green Car Congress

MARCH 27, 2020

For the past four years, the Co-Optimization of Fuels & Engines (Co-Optima) National Laboratory consortium has focused research efforts primarily on turbocharged (boosted) spark-ignition (SI) engines for light-duty vehicles. Of the fuel properties investigated, these six were found to have the most impact on engine efficiency and emissions.

Alcohol Blend 243

Alcohol Blend Fuel Engine Fuel Economy 243

Green Car Congress

OCTOBER 11, 2019

These blendstocks are best-suited for light-duty (LD) gasoline BSI engines. The merit function determines potential improvements in engine efficiency, was used to evaluate the performance of candidate bio-blendstocks in blends up to 30%. The blendstocks were identified using a fuel property basis using the BSI merit function.

Engine 207

Engine Alcohol Blend Idaho Davis 207

Green Car Congress

JUNE 28, 2019

The merit function quantifies the impact of six fuel properties—research octane number (RON), octane sensitivity (S), heat of vaporization (HOV), flame speed, particulate matter index (PMI), and catalyst light-off-temperature—on boosted SI efficiency.

Alcohol Blend 170

Alcohol Blend Fuel Economy Engine Fuel 170

Green Car Congress

AUGUST 25, 2015

A higher compression ratio can be used if an engine will operate primarily at light loads, such that degraded efficiency at high loads is more than offset by improved efficiency at light loads. Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. —Leone et al.

Engine 150

Engine Fuel GM Ford 150

Green Car Congress

JULY 8, 2015

Geely Auto has invested significant resources in the development and promotion of methanol-fueled engines and vehicles over a long period and has already made progress with this technology in China. Most recently, methanol-fueled prototypes are being tested in 3 provinces of China. and Gong, H. Sileghem, L., Wallner, T., and Verhelst, S.

Renewable 150

Renewable Carbon Water Fuel 150