Green Car Congress

MAY 1, 2009

A study by engineers from Mahle Powertrain Ltd and BP found strong synergy between spark ignition (SI) engine downsizing and fuel containing low-to-moderate amounts of alcohol, including ethanol and butanol. The addition of alcohol did not improve excess air tolerance. Cairns et al. SAE 2009-01-0138). SAE 2009-01-0138 ).

Alcohol Blend 186

Alcohol Blend Downsizing Engine Fuel 186

Green Car Congress

MARCH 27, 2020

compression ratio, extent of downsizing, etc.). Of these 10 blendstocks, six were assessed to have the fewest significant practical barriers to adoption which include alcohols and an olefine (alkene): di-isobutylene, ethanol, a fusel alcohol blend, isobutanol, n-propanol, and isopropanol. What Will Work in the Real World?

Alcohol Blend 243

Alcohol Blend Fuel Engine Fuel Economy 243

Green Car Congress

AUGUST 25, 2015

The preflame reactions are a strong function of temperature, so evaporative cooling from the fuel can also play a significant role, which is particularly important for fuels containing alcohol. Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. —Leone et al.

Engine 150

Engine Fuel GM Ford 150