Remove Downsizing Remove Gasoline Remove Oil Remove Resource
article thumbnail

Audi using supplementary port fuel injection to address particulates from gasoline direct injection

Green Car Congress

In part-load operation, the indirect injection supplements direct gasoline injection to improve fuel economy and to reduce the output of particulates from the engine. GDI technology provides fuel efficiency benefits from charge air cooling, more facile turbocharging, and the downsizing that these permit. Resources. Earlier post.)

Gasoline 304
article thumbnail

Navigant forecasts global road transportation energy consumption to increase 25% by 2035; 84% from conventional fuels

Green Car Congress

gasoline and diesel) represent the bulk of energy consumption throughout the forecast period. However, Navigant foresees that the consumption of gasoline will slowly decrease as alternatives and diesel become more popular in light-duty vehicle (LDV) segments. Source: Navigant Research. Click to enlarge. Conventional fuels (e.g.,

article thumbnail

Study finds highly-turbocharged alcohol-fueled DISI engines could be more efficient than diesels

Green Car Congress

Alcohol-based transportation fuels from a wide range of biomass feedstocks including agricultural, forestry, municipal and industrial waste and specially grown crops and trees can potentially offer a substantial substitute for oil derived fuel. More modest downsizing up to 5 liters could offer a practical solution. In this manner a 3.6

Diesel 218
article thumbnail

Audi introduces new high-efficiency 2.0L TFSI based on Miller cycle; 190 hp, 47 mpg

Green Car Congress

TFSI gasoline turbocharged direct injection engine for the first time at the Vienna Motor Symposium this week. This also addresses particulates from gasoline direct injection. The consistent reduction of friction as well as the use of low-friction engine oil (0W-20) also increases efficiency. Stansfield, P., and Freeland, P.

Audi 150
article thumbnail

FEV’s two-stage VCR system; 5-7% increase in fuel economy using variable length conrods

Green Car Congress

downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio. seconds, and is independent from oil temperature and the corresponding operating point. Click to enlarge. Kleeberg, H., Tomazic, D.,

article thumbnail

Full lifecycle CO2 of new Mercedes C-Class 10% less than outgoing model

Green Car Congress

Over the entire lifecycle of the C 180, the lifecycle analysis yields a primary energy consumption of 521 gigajoules (corresponding to the energy content of around 16,000 liters of gasoline); an environmental input of approx. Where energy resources are concerned, lignite, hard coal and uranium figure principally in car production.

Mercedes 252
article thumbnail

Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels

Green Car Congress

Knock and fuel octane rating are becoming increasingly important due to many powertrain design trends including downsizing, downspeeding, cylinder deactivation, and hybridization. … Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. —Leone et al. In their study, Leone et al.

Engine 150