article thumbnail

Cummins progressing with lightweight downsized T2B2 diesel for pickup; 40% improvement in fuel economy over gasoline V8

Green Car Congress

At the US Department of Energy’s (DOE’s) Annual Merit Review meeting in Washington, DC last week, Michael Ruth from Cummins noted that the DOE program target for the project is a fuel economy (CAFE) target of 26 mpg (9.05 Resources (DOE will publish Merit Review presentations on its website.). Earlier post.). Weigert, E.,

article thumbnail

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

Green Car Congress

A team of engineers from GM Powertrain, Ford and FCA have published a detailed review of how to estimate the engine efficiency benefits of higher octane fuel—e.g., fuel with higher ethanol content—for part- and full-load operation for different engine types and fuel assumptions. In their study, Leone et al.

Engine 150
article thumbnail

Review of research suggests inconclusive support for fuel consumption benefits of catalyzed EGR

Green Car Congress

Conflicting evidence does not support making a firm conclusion on the fuel consumption benefit of catalysed Exhaust Gas Recirculation (EGR), according to a review of current studies by a team at the University of Bath (UK). According to the review, the conversion of HCs, CO, and NO in the exhaust gas by the catalyst can result in up to a 4.5%

Fuel 150
article thumbnail

Ricardo’s “deep” Miller cycle concept: Magma

Green Car Congress

In its new report on downsized and boosted gasoline engine technologies ( earlier post ) the ICCT highlighted Ricardo’s work on an “extreme” Miller cycle concept with high (13:1) compression ratio (CR) and central direct injection in a downsized boosted engine. Resources. Ricardo continues to develop the concept.

Concept 150
article thumbnail

Volkswagen Group to begin equipping TSI and TFSI engines with gasoline particulate filters from June 2017

Green Car Congress

Although gasoline direct injection (GDI) enables downsizing with its increased power and lower fuel consumption, it also results in higher particulate emissions. 2016) “Vehicular Emissions in Review,” SAE Int. This will reduce particulate emissions from the direct injection gasoline engines by up to 90%. Johnson, T.,

Gasoline 150
article thumbnail

Center for Automotive Research calls long-run economic risk to auto industry of mandating permanent fuel economy standards very serious; recommends periodic reviews

Green Car Congress

Based on the results of the study, CAR believes the economic risk to the auto industry connected to mandating permanent fuel economy standards in the long run is “ very serious ” The group recommends periodic review to assess the rate of technology development and cost reduction of advanced technologies leading up to 2025.

article thumbnail

GM, Ford R&D execs stress importance of improved, advanced fuels for future engine efficiency gains, GHG goals

Green Car Congress

According to Brooks, among the technologies GM is looking to in the gasoline engine area are: Continued aggressive downsizing. Chris Gearhar (2016) “Implications of sustainability for the United States light-duty transportation sector” MRS Energy & Sustainability: A Review Journal doi: 10.1557/mre.2016.8.

GM 150