Green Car Congress

NOVEMBER 1, 2010

Highly turbocharged alcohol-fueled direct-injection spark-ignition (DISI) engines operated at a high compression ratio could be as or more efficient than diesel engines while also providing advantages of lower vehicle cost, lower emissions and higher power, according to a recent modeling study by Leslie Bromberg and Daniel Cohn at MIT.

Diesel 218

Diesel Engine Downsizing Fuel 218

Green Car Congress

AUGUST 4, 2011

Since this energy loss is primarily thermal in nature and can be attributed to the exhaust, cooling system, and engine and transmission surfaces, Mazda’s R&D team’s central focus is on improving the engine’s thermal efficiency cost-effectively. Extreme compression ratio rather than downsizing. Although downsizing—i.e.,

Mazda 322

Mazda Engine Gasoline Diesel 322

Green Car Congress

MAY 15, 2013

The goal of the studies was make a preliminary assessment of Pinnacle Engines suitability for automotive applications based on the work-to-date on the small single-cylinder engines. The fuel economy study, using GT Power, encompassed both a naturally aspirated 1.5-liter, —FEV analysis. Fuel economy. mpg US (6.3 mpg US (8.0

Fuel Economy 230

Fuel Economy Economy Engine Downsizing 230

Green Car Congress

JULY 17, 2015

The alternative-fuel car evolved to reduce exhaust emissions and other problems derived from burning fossil fuels. The impetus for this change came from a study by the US Idaho National Lab [ 2 ]. In fact, the optimized PHEV is much more efficient as a long range liquid fuel vehicle, because the engine is downsized.

PHEV 150

PHEV Plug-in Renewable Energy 150