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 researchers found that the combination of technologies allowed improvements in fuel economy over the engine drive cycle.

Alcohol Blend 186

Alcohol Blend Downsizing Engine Fuel 186

Green Car Congress

MARCH 27, 2020

This research involves identifying the fuel properties and engine parameters that mitigate knock and emissions, while maximizing boosted SI efficiency and performance. compression ratio, extent of downsizing, etc.). 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

AUGUST 25, 2015

Their paper is published in the ACS journal Environmental Science & Technology. Knock and fuel octane rating are becoming increasingly important due to many powertrain design trends including downsizing, downspeeding, cylinder deactivation, and hybridization. … —Leone et al. In their study, Leone et al.

Engine 150

Engine Fuel GM Ford 150